def _evaluate_failed_when_result(result):
     if self._task.failed_when is not None:
         cond = Conditional(loader=self._loader)
         cond.when = [ self._task.failed_when ]
         failed_when_result = cond.evaluate_conditional(templar, vars_copy)
         result['failed_when_result'] = result['failed'] = failed_when_result
         return failed_when_result
     return False
Exemple #2
0
 def _evaluate_failed_when_result(result):
     if self._task.failed_when is not None:
         cond = Conditional(loader=self._loader)
         cond.when = [ self._task.failed_when ]
         failed_when_result = cond.evaluate_conditional(templar, vars_copy)
         result['failed_when_result'] = result['failed'] = failed_when_result
         return failed_when_result
     return False
Exemple #3
0
    def run(self, tmp=None, task_vars=None):
        if task_vars is None:
            task_vars = dict()

        result = super(ActionModule, self).run(tmp, task_vars)
        del tmp  # tmp no longer has any effect

        if 'that' not in self._task.args:
            raise AnsibleError('conditional required in "that" string')

        fail_msg = None
        success_msg = None

        fail_msg = self._task.args.get('fail_msg', self._task.args.get('msg'))
        if fail_msg is None:
            fail_msg = 'Assertion failed'
        elif not isinstance(fail_msg, string_types):
            raise AnsibleError(
                'Incorrect type for fail_msg or msg, expected string and got %s'
                % type(fail_msg))

        success_msg = self._task.args.get('success_msg')
        if success_msg is None:
            success_msg = 'All assertions passed'
        elif not isinstance(success_msg, string_types):
            raise AnsibleError(
                'Incorrect type for success_msg, expected string and got %s' %
                type(success_msg))

        # make sure the 'that' items are a list
        thats = self._task.args['that']
        if not isinstance(thats, list):
            thats = [thats]

        # Now we iterate over the that items, temporarily assigning them
        # to the task's when value so we can evaluate the conditional using
        # the built in evaluate function. The when has already been evaluated
        # by this point, and is not used again, so we don't care about mangling
        # that value now
        cond = Conditional(loader=self._loader)
        result['_ansible_verbose_always'] = True
        for that in thats:
            cond.when = [that]
            test_result = cond.evaluate_conditional(templar=self._templar,
                                                    all_vars=task_vars)
            if not test_result:
                result['failed'] = True
                result['evaluated_to'] = test_result
                result['assertion'] = that

                result['msg'] = fail_msg

                return result

        result['changed'] = False
        result['msg'] = success_msg
        return result
 def _evaluate_failed_when_result(result):
     if self._task.failed_when:
         cond = Conditional(loader=self._loader)
         cond.when = self._task.failed_when
         failed_when_result = cond.evaluate_conditional(templar, vars_copy)
         result['failed_when_result'] = result['failed'] = failed_when_result
     else:
         failed_when_result = False
     return failed_when_result
Exemple #5
0
 def _evaluate_failed_when_result(result):
     if self._task.failed_when:
         cond = Conditional(loader=self._loader)
         cond.when = self._task.failed_when
         failed_when_result = cond.evaluate_conditional(templar, vars_copy)
         result['failed_when_result'] = result['failed'] = failed_when_result
     else:
         failed_when_result = False
     return failed_when_result
def test_cond_eval():
    fake_loader = DictDataLoader({})
    # True must be stored in a variable to trigger templating. Using True
    # directly would be caught by optimization for bools to short-circuit
    # templating.
    variables = {"foo": True}
    templar = Templar(loader=fake_loader, variables=variables)
    cond = Conditional(loader=fake_loader)
    cond.when = ["foo"]

    with templar.set_temporary_context(jinja2_native=True):
        assert cond.evaluate_conditional(templar, variables)
Exemple #7
0
    def _create_jinja2_predicate(self, expr):
        def match(item):
            self._task_vars[
                'item'] = '' if item['value'] is None else item['value']
            self._task_vars['captures'] = item['captures']

            return cond.evaluate_conditional(templar=self._templar,
                                             all_vars=self._task_vars)

        cond = Conditional(loader=self._loader)
        cond.when = [to_text(expr)]

        return match
Exemple #8
0
def test_cond_eval(native_template_mod):
    fake_loader = DictDataLoader({})
    # True must be stored in a variable to trigger templating. Using True
    # directly would be caught by optimization for bools to short-circuit
    # templating.
    variables = {"foo": True}
    templar = native_template_mod.Templar(loader=fake_loader,
                                          variables=variables)
    assert isinstance(templar.environment,
                      native_template_mod.AnsibleNativeEnvironment)

    cond = Conditional(loader=fake_loader)
    cond.when = ["foo"]
    assert cond.evaluate_conditional(templar, variables)
    def _do_assert(self, condition, category="", fill_result=True):
        ''' perform a single assert and fill the result '''

        cond = Conditional(loader=self._loader)
        cond.when = [AnsibleUnicode(condition)]

        test_result = cond.evaluate_conditional(templar=self._templar,
                                                all_vars=self._task_vars)
        if fill_result and not test_result:
            self._result['failed'] = True
            self._result['evaluated_to'] = False
            if 'assertion' not in self._result.keys():
                self._result['assertion'] = []
            self._result['assertion'].append('{0}> {1}'.format(
                category, condition))
            self._result['msg'] = self._params['fail_msg']

        return test_result
Exemple #10
0
    def run(self, tmp=None, task_vars=None):
        if task_vars is None:
            task_vars = dict()

        result = super(ActionModule, self).run(tmp, task_vars)
        del tmp  # tmp no longer has any effect

        if 'that' not in self._task.args:
            raise AnsibleError('conditional required in "that" string')

        msg = None
        if 'msg' in self._task.args:
            msg = self._task.args['msg']

        # make sure the 'that' items are a list
        thats = self._task.args['that']
        if not isinstance(thats, list):
            thats = [thats]

        # Now we iterate over the that items, temporarily assigning them
        # to the task's when value so we can evaluate the conditional using
        # the built in evaluate function. The when has already been evaluated
        # by this point, and is not used again, so we don't care about mangling
        # that value now
        cond = Conditional(loader=self._loader)
        result['_ansible_verbose_always'] = True
        for that in thats:
            cond.when = [that]
            test_result = cond.evaluate_conditional(templar=self._templar, all_vars=task_vars)
            if not test_result:
                result['failed'] = True
                result['evaluated_to'] = test_result
                result['assertion'] = that

                if msg:
                    result['msg'] = msg

                return result

        result['changed'] = False
        result['msg'] = 'All assertions passed'
        return result
Exemple #11
0
    def run(self, tmp=None, task_vars=None):
        if task_vars is None:
            task_vars = dict()

        result = super(ActionModule, self).run(tmp, task_vars)

        if 'that' not in self._task.args:
            raise AnsibleError('conditional required in "that" string')

        msg = None
        if 'msg' in self._task.args:
            msg = self._task.args['msg']

        # make sure the 'that' items are a list
        thats = self._task.args['that']
        if not isinstance(thats, list):
            thats = [thats]

        # Now we iterate over the that items, temporarily assigning them
        # to the task's when value so we can evaluate the conditional using
        # the built in evaluate function. The when has already been evaluated
        # by this point, and is not used again, so we don't care about mangling
        # that value now
        cond = Conditional(loader=self._loader)
        result['_ansible_verbose_always'] = True
        for that in thats:
            cond.when = [that]
            test_result = cond.evaluate_conditional(templar=self._templar,
                                                    all_vars=task_vars)
            if not test_result:
                result['failed'] = True
                result['evaluated_to'] = test_result
                result['assertion'] = that

                if msg:
                    result['msg'] = msg

                return result

        result['changed'] = False
        result['msg'] = 'All assertions passed'
        return result
Exemple #12
0
    def run(self, tmp=None, task_vars=dict()):

        if not 'that' in self._task.args:
            raise AnsibleError('conditional required in "that" string')

        msg = None
        if 'msg' in self._task.args:
            msg = self._task.args['msg']

        # make sure the 'that' items are a list
        thats = self._task.args['that']
        if not isinstance(thats, list):
            thats = [thats]

        # Now we iterate over the that items, temporarily assigning them
        # to the task's when value so we can evaluate the conditional using
        # the built in evaluate function. The when has already been evaluated
        # by this point, and is not used again, so we don't care about mangling
        # that value now
        cond = Conditional(loader=self._loader)
        for that in thats:
            cond.when = [that]
            test_result = cond.evaluate_conditional(templar=self._templar,
                                                    all_vars=task_vars)
            if not test_result:
                result = dict(
                    failed=True,
                    evaluated_to=test_result,
                    assertion=that,
                )

                if msg:
                    result['msg'] = msg

                return result

        return dict(changed=False, msg='all assertions passed')
Exemple #13
0
    def run(self, tmp=None, task_vars=dict()):

        if not 'that' in self._task.args:
            raise AnsibleError('conditional required in "that" string')

        msg = None
        if 'msg' in self._task.args:
            msg = self._task.args['msg']

        # make sure the 'that' items are a list
        thats = self._task.args['that']
        if not isinstance(thats, list):
            thats = [ thats ]

        # Now we iterate over the that items, temporarily assigning them
        # to the task's when value so we can evaluate the conditional using
        # the built in evaluate function. The when has already been evaluated
        # by this point, and is not used again, so we don't care about mangling
        # that value now
        cond = Conditional(loader=self._loader)
        for that in thats:
            cond.when = [ that ]
            test_result = cond.evaluate_conditional(all_vars=task_vars)
            if not test_result:
                result = dict(
                   failed       = True,
                   evaluated_to = test_result,
                   assertion    = that,
                )

                if msg:
                    result['msg'] = msg

                return result

        return dict(changed=False, msg='all assertions passed')
    def _execute(self, variables=None):
        '''
        The primary workhorse of the executor system, this runs the task
        on the specified host (which may be the delegated_to host) and handles
        the retry/until and block rescue/always execution
        '''

        if variables is None:
            variables = self._job_vars

        templar = Templar(loader=self._loader, shared_loader_obj=self._shared_loader_obj, variables=variables)

        context_validation_error = None
        try:
            # apply the given task's information to the connection info,
            # which may override some fields already set by the play or
            # the options specified on the command line
            self._play_context = self._play_context.set_task_and_variable_override(task=self._task, variables=variables, templar=templar)

            # fields set from the play/task may be based on variables, so we have to
            # do the same kind of post validation step on it here before we use it.
            self._play_context.post_validate(templar=templar)

            # now that the play context is finalized, if the remote_addr is not set
            # default to using the host's address field as the remote address
            if not self._play_context.remote_addr:
                self._play_context.remote_addr = self._host.address

            # We also add "magic" variables back into the variables dict to make sure
            # a certain subset of variables exist.
            self._play_context.update_vars(variables)
        except AnsibleError as e:
            # save the error, which we'll raise later if we don't end up
            # skipping this task during the conditional evaluation step
            context_validation_error = e

        # Evaluate the conditional (if any) for this task, which we do before running
        # the final task post-validation. We do this before the post validation due to
        # the fact that the conditional may specify that the task be skipped due to a
        # variable not being present which would otherwise cause validation to fail
        try:
            if not self._task.evaluate_conditional(templar, variables):
                display.debug("when evaluation failed, skipping this task")
                return dict(changed=False, skipped=True, skip_reason='Conditional check failed', _ansible_no_log=self._play_context.no_log)
        except AnsibleError:
            # skip conditional exception in the case of includes as the vars needed might not be avaiable except in the included tasks or due to tags
            if self._task.action != 'include':
                raise

        # if we ran into an error while setting up the PlayContext, raise it now
        if context_validation_error is not None:
            raise context_validation_error

        # if this task is a TaskInclude, we just return now with a success code so the
        # main thread can expand the task list for the given host
        if self._task.action == 'include':
            include_variables = self._task.args.copy()
            include_file = include_variables.pop('_raw_params', None)
            if not include_file:
                return dict(failed=True, msg="No include file was specified to the include")

            include_file = templar.template(include_file)
            return dict(include=include_file, include_variables=include_variables)

        # Now we do final validation on the task, which sets all fields to their final values.
        self._task.post_validate(templar=templar)
        if '_variable_params' in self._task.args:
            variable_params = self._task.args.pop('_variable_params')
            if isinstance(variable_params, dict):
                display.deprecated("Using variables for task params is unsafe, especially if the variables come from an external source like facts")
                variable_params.update(self._task.args)
                self._task.args = variable_params

        # get the connection and the handler for this execution
        if not self._connection or not getattr(self._connection, 'connected', False) or self._play_context.remote_addr != self._connection._play_context.remote_addr:
            self._connection = self._get_connection(variables=variables, templar=templar)
            self._connection.set_host_overrides(host=self._host)
        else:
            # if connection is reused, its _play_context is no longer valid and needs
            # to be replaced with the one templated above, in case other data changed
            self._connection._play_context = self._play_context

        self._handler = self._get_action_handler(connection=self._connection, templar=templar)

        # And filter out any fields which were set to default(omit), and got the omit token value
        omit_token = variables.get('omit')
        if omit_token is not None:
            self._task.args = dict((i[0], i[1]) for i in iteritems(self._task.args) if i[1] != omit_token)

        # Read some values from the task, so that we can modify them if need be
        if self._task.until:
            retries = self._task.retries
            if retries is None:
                retries = 3
        else:
            retries = 1

        delay = self._task.delay
        if delay < 0:
            delay = 1

        # make a copy of the job vars here, in case we need to update them
        # with the registered variable value later on when testing conditions
        vars_copy = variables.copy()

        display.debug("starting attempt loop")
        result = None
        for attempt in range(1, retries + 1):
            display.debug("running the handler")
            try:
                result = self._handler.run(task_vars=variables)
            except AnsibleConnectionFailure as e:
                return dict(unreachable=True, msg=to_unicode(e))
            display.debug("handler run complete")

            # preserve no log
            result["_ansible_no_log"] = self._play_context.no_log

            # update the local copy of vars with the registered value, if specified,
            # or any facts which may have been generated by the module execution
            if self._task.register:
                vars_copy[self._task.register] = wrap_var(result.copy())

            if self._task.async > 0:
                # the async_wrapper module returns dumped JSON via its stdout
                # response, so we parse it here and replace the result
                try:
                    if 'skipped' in result and result['skipped'] or 'failed' in result and result['failed']:
                        return result
                    result = json.loads(result.get('stdout'))
                except (TypeError, ValueError) as e:
                    return dict(failed=True, msg=u"The async task did not return valid JSON: %s" % to_unicode(e))

                if self._task.poll > 0:
                    result = self._poll_async_result(result=result, templar=templar)

                # ensure no log is preserved
                result["_ansible_no_log"] = self._play_context.no_log

            # helper methods for use below in evaluating changed/failed_when
            def _evaluate_changed_when_result(result):
                if self._task.changed_when is not None and self._task.changed_when:
                    cond = Conditional(loader=self._loader)
                    cond.when = self._task.changed_when
                    result['changed'] = cond.evaluate_conditional(templar, vars_copy)

            def _evaluate_failed_when_result(result):
                if self._task.failed_when:
                    cond = Conditional(loader=self._loader)
                    cond.when = self._task.failed_when
                    failed_when_result = cond.evaluate_conditional(templar, vars_copy)
                    result['failed_when_result'] = result['failed'] = failed_when_result
                else:
                    failed_when_result = False
                return failed_when_result

            if 'ansible_facts' in result:
                vars_copy.update(result['ansible_facts'])

            # set the failed property if the result has a non-zero rc. This will be
            # overridden below if the failed_when property is set
            if result.get('rc', 0) != 0:
                result['failed'] = True

            # if we didn't skip this task, use the helpers to evaluate the changed/
            # failed_when properties
            if 'skipped' not in result:
                _evaluate_changed_when_result(result)
                _evaluate_failed_when_result(result)

            if retries > 1:
                cond = Conditional(loader=self._loader)
                cond.when = self._task.until
                if cond.evaluate_conditional(templar, vars_copy):
                    break
                else:
                    # no conditional check, or it failed, so sleep for the specified time
                    if attempt < retries:
                        result['attempts'] = attempt
                        result['_ansible_retry'] = True
                        result['retries'] = retries
                        display.debug('Retrying task, attempt %d of %d' % (attempt, retries))
                        self._rslt_q.put(TaskResult(self._host, self._task, result), block=False)
                        time.sleep(delay)
Exemple #15
0
    def _execute(self, variables=None):
        '''
        The primary workhorse of the executor system, this runs the task
        on the specified host (which may be the delegated_to host) and handles
        the retry/until and block rescue/always execution
        '''

        if variables is None:
            variables = self._job_vars

        templar = Templar(loader=self._loader, shared_loader_obj=self._shared_loader_obj, variables=variables)

        context_validation_error = None
        try:
            # apply the given task's information to the connection info,
            # which may override some fields already set by the play or
            # the options specified on the command line
            self._play_context = self._play_context.set_task_and_variable_override(task=self._task, variables=variables, templar=templar)

            # fields set from the play/task may be based on variables, so we have to
            # do the same kind of post validation step on it here before we use it.
            self._play_context.post_validate(templar=templar)

            # We also add "magic" variables back into the variables dict to make sure
            # a certain subset of variables exist.
            self._play_context.update_vars(variables)
        except AnsibleError as e:
            # save the error, which we'll raise later if we don't end up
            # skipping this task during the conditional evaluation step
            context_validation_error = e

        # Evaluate the conditional (if any) for this task, which we do before running
        # the final task post-validation. We do this before the post validation due to
        # the fact that the conditional may specify that the task be skipped due to a
        # variable not being present which would otherwise cause validation to fail
        try:
            if not self._task.evaluate_conditional(templar, variables):
                self._display.debug("when evaluation failed, skipping this task")
                return dict(changed=False, skipped=True, skip_reason='Conditional check failed', _ansible_no_log=self._play_context.no_log)
        except AnsibleError:
            # skip conditional exception in the case of includes as the vars needed might not be avaiable except in the included tasks or due to tags
            if self._task.action != 'include':
                raise

        # if we ran into an error while setting up the PlayContext, raise it now
        if context_validation_error is not None:
            raise context_validation_error

        # if this task is a TaskInclude, we just return now with a success code so the
        # main thread can expand the task list for the given host
        if self._task.action == 'include':
            include_variables = self._task.args.copy()
            include_file = include_variables.pop('_raw_params', None)
            if not include_file:
                return dict(failed=True, msg="No include file was specified to the include")

            include_file = templar.template(include_file)
            return dict(include=include_file, include_variables=include_variables)

        # Now we do final validation on the task, which sets all fields to their final values.
        self._task.post_validate(templar=templar)
        if '_variable_params' in self._task.args:
            variable_params = self._task.args.pop('_variable_params')
            if isinstance(variable_params, dict):
                self._display.deprecated("Using variables for task params is unsafe, especially if the variables come from an external source like facts")
                variable_params.update(self._task.args)
                self._task.args = variable_params

        # get the connection and the handler for this execution
        self._connection = self._get_connection(variables=variables, templar=templar)
        self._connection.set_host_overrides(host=self._host)

        self._handler = self._get_action_handler(connection=self._connection, templar=templar)

        # And filter out any fields which were set to default(omit), and got the omit token value
        omit_token = variables.get('omit')
        if omit_token is not None:
            self._task.args = dict((i[0], i[1]) for i in iteritems(self._task.args) if i[1] != omit_token)

        # Read some values from the task, so that we can modify them if need be
        if self._task.until is not None:
            retries = self._task.retries
            if retries <= 0:
                retries = 1
        else:
            retries = 1

        delay = self._task.delay
        if delay < 0:
            delay = 1

        # make a copy of the job vars here, in case we need to update them
        # with the registered variable value later on when testing conditions
        vars_copy = variables.copy()

        self._display.debug("starting attempt loop")
        result = None
        for attempt in range(retries):
            if attempt > 0:
                self._display.display("FAILED - RETRYING: %s (%d retries left). Result was: %s" % (self._task, retries-attempt, result), color="red")
                result['attempts'] = attempt + 1

            self._display.debug("running the handler")
            try:
                result = self._handler.run(task_vars=variables)
            except AnsibleConnectionFailure as e:
                return dict(unreachable=True, msg=str(e))
            self._display.debug("handler run complete")

            if self._task.async > 0:
                # the async_wrapper module returns dumped JSON via its stdout
                # response, so we parse it here and replace the result
                try:
                    result = json.loads(result.get('stdout'))
                except (TypeError, ValueError) as e:
                    return dict(failed=True, msg="The async task did not return valid JSON: %s" % str(e))

                if self._task.poll > 0:
                    result = self._poll_async_result(result=result, templar=templar)

            # update the local copy of vars with the registered value, if specified,
            # or any facts which may have been generated by the module execution
            if self._task.register:
                vars_copy[self._task.register] = result

            if 'ansible_facts' in result:
                vars_copy.update(result['ansible_facts'])

            # create a conditional object to evaluate task conditions
            cond = Conditional(loader=self._loader)

            def _evaluate_changed_when_result(result):
                if self._task.changed_when is not None:
                    cond.when = [ self._task.changed_when ]
                    result['changed'] = cond.evaluate_conditional(templar, vars_copy)

            def _evaluate_failed_when_result(result):
                if self._task.failed_when is not None:
                    cond.when = [ self._task.failed_when ]
                    failed_when_result = cond.evaluate_conditional(templar, vars_copy)
                    result['failed_when_result'] = result['failed'] = failed_when_result
                    return failed_when_result
                return False

            if self._task.until:
                cond.when = self._task.until
                if cond.evaluate_conditional(templar, vars_copy):
                    _evaluate_changed_when_result(result)
                    _evaluate_failed_when_result(result)
                    break
            elif (self._task.changed_when is not None or self._task.failed_when is not None) and 'skipped' not in result:
                    _evaluate_changed_when_result(result)
                    if _evaluate_failed_when_result(result):
                        break
            elif 'failed' not in result:
                if result.get('rc', 0) != 0:
                    result['failed'] = True
                else:
                    # if the result is not failed, stop trying
                    break

            if attempt < retries - 1:
                time.sleep(delay)
            else:
                _evaluate_changed_when_result(result)
                _evaluate_failed_when_result(result)
Exemple #16
0
    def run(self, tmp=None, task_vars=None):
        if task_vars is None:
            task_vars = dict()

        result = super(ActionModule, self).run(tmp, task_vars)
        del tmp  # tmp no longer has any effect

        if 'that' not in self._task.args:
            raise AnsibleError('conditional required in "that" string')

        fail_msg = None
        success_msg = None

        fail_msg = self._task.args.get('fail_msg', self._task.args.get('msg'))
        if fail_msg is None:
            fail_msg = 'Assertion failed'
        elif isinstance(fail_msg, list):
            if not all(isinstance(x, string_types) for x in fail_msg):
                raise AnsibleError(
                    'Type of one of the elements in fail_msg or msg list is not string type'
                )
        elif not isinstance(fail_msg, (string_types, list)):
            raise AnsibleError(
                'Incorrect type for fail_msg or msg, expected a string or list and got %s'
                % type(fail_msg))

        success_msg = self._task.args.get('success_msg')
        if success_msg is None:
            success_msg = 'All assertions passed'
        elif isinstance(success_msg, list):
            if not all(isinstance(x, string_types) for x in success_msg):
                raise AnsibleError(
                    'Type of one of the elements in success_msg list is not string type'
                )
        elif not isinstance(success_msg, (string_types, list)):
            raise AnsibleError(
                'Incorrect type for success_msg, expected a string or list and got %s'
                % type(success_msg))

        # make sure the 'that' items are a list
        thats = self._task.args['that']
        if not isinstance(thats, list):
            thats = [thats]

        # Now we iterate over the that items, temporarily assigning them
        # to the task's when value so we can evaluate the conditional using
        # the built in evaluate function. The when has already been evaluated
        # by this point, and is not used again, so we don't care about mangling
        # that value now
        cond = Conditional(loader=self._loader)
        results = []

        for that in thats:
            cond.when = [that]
            test_result = cond.evaluate_conditional(templar=self._templar,
                                                    all_vars=task_vars)
            this_result = {
                'evaluated_to': test_result,
                'assertion': that,
            }

            results.append(this_result)

        failed = any(not result['evaluated_to'] for result in results)
        changed_when_failed = not self._task.args.get('fatal', False)

        result.update({
            'assertions': results,
            'changed': (failed and changed_when_failed),
            'failed': (failed and not changed_when_failed),
            'ansible_stats': {
                'data': {
                    'assertions': 1,
                    'assertions_failed': 1 if failed else 0,
                    'assertions_passed': 0 if failed else 1,
                },
                'aggregate': True,
                'per_host': True,
            },
        })

        if failed and self.fail_verbose:
            result['_ansible_verbose_always'] = True

        if failed:
            result['msg'] = fail_msg
        elif not failed:
            result['msg'] = success_msg

        return result
Exemple #17
0
    def run(self, tmp=None, task_vars=None):
        if task_vars is None:
            task_vars = dict()

        result = super(ActionModule, self).run(tmp, task_vars)

        if 'that' not in self._task.args:
            raise AnsibleError('conditional required in "that" string')

        msg = None
        if 'msg' in self._task.args:
            msg = self._task.args['msg']

        # make sure the 'that' items are a list
        thats = self._task.args['that']
        if not isinstance(thats, list):
            thats = [thats]

        # Now we iterate over the that items, temporarily assigning them
        # to the task's when value so we can evaluate the conditional using
        # the built in evaluate function. The when has already been evaluated
        # by this point, and is not used again, so we don't care about mangling
        # that value now
        cond = Conditional(loader=self._loader)
        results = []

        for that in thats:
            cond.when = [that]
            test_result = cond.evaluate_conditional(templar=self._templar,
                                                    all_vars=task_vars)

            result = {
                'assertion': that,
                'evaluated_to': bool(test_result),
            }

            results.append(result)

        failed = any(not result['evaluated_to'] for result in results)
        changed_when_failed = not self._task.args.get('fatal', False)

        ret = {
            'assertions': results,
            'changed': (failed and changed_when_failed),
            'failed': (failed and not changed_when_failed),
            'ansible_stats': {
                'data': {
                    'assertions': 1,
                    'assertions_failed': 1 if failed else 0,
                    'assertions_passed': 0 if failed else 1,
                },
                'aggregate': True,
                'per_host': True,
            },
        }

        if failed and self.fail_verbose:
            ret['_ansible_verbose_always'] = True

        if failed and msg:
            ret['msg'] = msg
        elif not failed:
            ret['msg'] = 'All assertions passed'

        return ret
Exemple #18
0
    def _execute(self, variables=None):
        '''
        The primary workhorse of the executor system, this runs the task
        on the specified host (which may be the delegated_to host) and handles
        the retry/until and block rescue/always execution
        '''

        if variables is None:
            variables = self._job_vars

        templar = Templar(loader=self._loader, shared_loader_obj=self._shared_loader_obj, variables=variables)

        context_validation_error = None
        try:
            # apply the given task's information to the connection info,
            # which may override some fields already set by the play or
            # the options specified on the command line
            self._play_context = self._play_context.set_task_and_variable_override(task=self._task, variables=variables, templar=templar)

            # fields set from the play/task may be based on variables, so we have to
            # do the same kind of post validation step on it here before we use it.
            self._play_context.post_validate(templar=templar)

            # now that the play context is finalized, if the remote_addr is not set
            # default to using the host's address field as the remote address
            if not self._play_context.remote_addr:
                self._play_context.remote_addr = self._host.address

            # We also add "magic" variables back into the variables dict to make sure
            # a certain subset of variables exist.
            self._play_context.update_vars(variables)

            # FIXME: update connection/shell plugin options
        except AnsibleError as e:
            # save the error, which we'll raise later if we don't end up
            # skipping this task during the conditional evaluation step
            context_validation_error = e

        # Evaluate the conditional (if any) for this task, which we do before running
        # the final task post-validation. We do this before the post validation due to
        # the fact that the conditional may specify that the task be skipped due to a
        # variable not being present which would otherwise cause validation to fail
        try:
            if not self._task.evaluate_conditional(templar, variables):
                display.debug("when evaluation is False, skipping this task")
                return dict(changed=False, skipped=True, skip_reason='Conditional result was False', _ansible_no_log=self._play_context.no_log)
        except AnsibleError:
            # loop error takes precedence
            if self._loop_eval_error is not None:
                raise self._loop_eval_error  # pylint: disable=raising-bad-type
            raise

        # Not skipping, if we had loop error raised earlier we need to raise it now to halt the execution of this task
        if self._loop_eval_error is not None:
            raise self._loop_eval_error  # pylint: disable=raising-bad-type

        # if we ran into an error while setting up the PlayContext, raise it now
        if context_validation_error is not None:
            raise context_validation_error  # pylint: disable=raising-bad-type

        # if this task is a TaskInclude, we just return now with a success code so the
        # main thread can expand the task list for the given host
        if self._task.action in ('include', 'include_tasks'):
            include_variables = self._task.args.copy()
            include_file = include_variables.pop('_raw_params', None)
            if not include_file:
                return dict(failed=True, msg="No include file was specified to the include")

            include_file = templar.template(include_file)
            return dict(include=include_file, include_variables=include_variables)

        # if this task is a IncludeRole, we just return now with a success code so the main thread can expand the task list for the given host
        elif self._task.action == 'include_role':
            include_variables = self._task.args.copy()
            return dict(include_variables=include_variables)

        # Now we do final validation on the task, which sets all fields to their final values.
        self._task.post_validate(templar=templar)
        if '_variable_params' in self._task.args:
            variable_params = self._task.args.pop('_variable_params')
            if isinstance(variable_params, dict):
                display.deprecated("Using variables for task params is unsafe, especially if the variables come from an external source like facts",
                                   version="2.6")
                variable_params.update(self._task.args)
                self._task.args = variable_params

        # get the connection and the handler for this execution
        if (not self._connection or
                not getattr(self._connection, 'connected', False) or
                self._play_context.remote_addr != self._connection._play_context.remote_addr):
            self._connection = self._get_connection(variables=variables, templar=templar)
        else:
            # if connection is reused, its _play_context is no longer valid and needs
            # to be replaced with the one templated above, in case other data changed
            self._connection._play_context = self._play_context

        self._set_connection_options(variables, templar)
        self._set_shell_options(variables, templar)

        # get handler
        self._handler = self._get_action_handler(connection=self._connection, templar=templar)

        # Apply default params for action/module, if present
        # These are collected as a list of dicts, so we need to merge them
        module_defaults = {}
        for default in self._task.module_defaults:
            module_defaults.update(default)
        if module_defaults:
            module_defaults = templar.template(module_defaults)
        if self._task.action in module_defaults:
            tmp_args = module_defaults[self._task.action].copy()
            tmp_args.update(self._task.args)
            self._task.args = tmp_args

        # And filter out any fields which were set to default(omit), and got the omit token value
        omit_token = variables.get('omit')
        if omit_token is not None:
            self._task.args = remove_omit(self._task.args, omit_token)

        # Read some values from the task, so that we can modify them if need be
        if self._task.until:
            retries = self._task.retries
            if retries is None:
                retries = 3
            elif retries <= 0:
                retries = 1
            else:
                retries += 1
        else:
            retries = 1

        delay = self._task.delay
        if delay < 0:
            delay = 1

        # make a copy of the job vars here, in case we need to update them
        # with the registered variable value later on when testing conditions
        vars_copy = variables.copy()

        display.debug("starting attempt loop")
        result = None
        for attempt in range(1, retries + 1):
            display.debug("running the handler")
            try:
                result = self._handler.run(task_vars=variables)
            except AnsibleActionSkip as e:
                return dict(skipped=True, msg=to_text(e))
            except AnsibleActionFail as e:
                return dict(failed=True, msg=to_text(e))
            except AnsibleConnectionFailure as e:
                return dict(unreachable=True, msg=to_text(e))
            display.debug("handler run complete")

            # preserve no log
            result["_ansible_no_log"] = self._play_context.no_log

            # update the local copy of vars with the registered value, if specified,
            # or any facts which may have been generated by the module execution
            if self._task.register:
                vars_copy[self._task.register] = wrap_var(result)

            if self._task.async_val > 0:
                if self._task.poll > 0 and not result.get('skipped') and not result.get('failed'):
                    result = self._poll_async_result(result=result, templar=templar, task_vars=vars_copy)
                    # FIXME callback 'v2_runner_on_async_poll' here

                # ensure no log is preserved
                result["_ansible_no_log"] = self._play_context.no_log

            # helper methods for use below in evaluating changed/failed_when
            def _evaluate_changed_when_result(result):
                if self._task.changed_when is not None and self._task.changed_when:
                    cond = Conditional(loader=self._loader)
                    cond.when = self._task.changed_when
                    result['changed'] = cond.evaluate_conditional(templar, vars_copy)

            def _evaluate_failed_when_result(result):
                if self._task.failed_when:
                    cond = Conditional(loader=self._loader)
                    cond.when = self._task.failed_when
                    failed_when_result = cond.evaluate_conditional(templar, vars_copy)
                    result['failed_when_result'] = result['failed'] = failed_when_result
                else:
                    failed_when_result = False
                return failed_when_result

            if 'ansible_facts' in result:
                if self._task.action in ('set_fact', 'include_vars'):
                    vars_copy.update(result['ansible_facts'])
                else:
                    vars_copy.update(namespace_facts(result['ansible_facts']))
                    if C.INJECT_FACTS_AS_VARS:
                        vars_copy.update(clean_facts(result['ansible_facts']))

            # set the failed property if it was missing.
            if 'failed' not in result:
                # rc is here for backwards compatibility and modules that use it instead of 'failed'
                if 'rc' in result and result['rc'] not in [0, "0"]:
                    result['failed'] = True
                else:
                    result['failed'] = False

            # Make attempts and retries available early to allow their use in changed/failed_when
            if self._task.until:
                result['attempts'] = attempt

            # set the changed property if it was missing.
            if 'changed' not in result:
                result['changed'] = False

            # re-update the local copy of vars with the registered value, if specified,
            # or any facts which may have been generated by the module execution
            # This gives changed/failed_when access to additional recently modified
            # attributes of result
            if self._task.register:
                vars_copy[self._task.register] = wrap_var(result)

            # if we didn't skip this task, use the helpers to evaluate the changed/
            # failed_when properties
            if 'skipped' not in result:
                _evaluate_changed_when_result(result)
                _evaluate_failed_when_result(result)

            if retries > 1:
                cond = Conditional(loader=self._loader)
                cond.when = self._task.until
                if cond.evaluate_conditional(templar, vars_copy):
                    break
                else:
                    # no conditional check, or it failed, so sleep for the specified time
                    if attempt < retries:
                        result['_ansible_retry'] = True
                        result['retries'] = retries
                        display.debug('Retrying task, attempt %d of %d' % (attempt, retries))
                        self._rslt_q.put(TaskResult(self._host.name, self._task._uuid, result, task_fields=self._task.dump_attrs()), block=False)
                        time.sleep(delay)
        else:
            if retries > 1:
                # we ran out of attempts, so mark the result as failed
                result['attempts'] = retries - 1
                result['failed'] = True

        # do the final update of the local variables here, for both registered
        # values and any facts which may have been created
        if self._task.register:
            variables[self._task.register] = wrap_var(result)

        if 'ansible_facts' in result:
            if self._task.action in ('set_fact', 'include_vars'):
                variables.update(result['ansible_facts'])
            else:
                variables.update(namespace_facts(result['ansible_facts']))
                if C.INJECT_FACTS_AS_VARS:
                    variables.update(clean_facts(result['ansible_facts']))

        # save the notification target in the result, if it was specified, as
        # this task may be running in a loop in which case the notification
        # may be item-specific, ie. "notify: service {{item}}"
        if self._task.notify is not None:
            result['_ansible_notify'] = self._task.notify

        # add the delegated vars to the result, so we can reference them
        # on the results side without having to do any further templating
        # FIXME: we only want a limited set of variables here, so this is currently
        #        hardcoded but should be possibly fixed if we want more or if
        #        there is another source of truth we can use
        delegated_vars = variables.get('ansible_delegated_vars', dict()).get(self._task.delegate_to, dict()).copy()
        if len(delegated_vars) > 0:
            result["_ansible_delegated_vars"] = {'ansible_delegated_host': self._task.delegate_to}
            for k in ('ansible_host', ):
                result["_ansible_delegated_vars"][k] = delegated_vars.get(k)

        # and return
        display.debug("attempt loop complete, returning result")
        return result
Exemple #19
0
                    result = self._poll_async_result(result=result, templar=templar)

            # update the local copy of vars with the registered value, if specified,
            # or any facts which may have been generated by the module execution
            if self._task.register:
                vars_copy[self._task.register] = result 

            if 'ansible_facts' in result:
                vars_copy.update(result['ansible_facts'])

            # create a conditional object to evaluate task conditions
            cond = Conditional(loader=self._loader)

            # FIXME: make sure until is mutually exclusive with changed_when/failed_when
            if self._task.until:
                cond.when = self._task.until
                if cond.evaluate_conditional(templar, vars_copy):
                    break
            elif (self._task.changed_when or self._task.failed_when) and 'skipped' not in result:
                if self._task.changed_when:
                    cond.when = [ self._task.changed_when ]
                    result['changed'] = cond.evaluate_conditional(templar, vars_copy)
                if self._task.failed_when:
                    cond.when = [ self._task.failed_when ]
                    failed_when_result = cond.evaluate_conditional(templar, vars_copy)
                    result['failed_when_result'] = result['failed'] = failed_when_result
                    if failed_when_result:
                        break
            elif 'failed' not in result and result.get('rc', 0) == 0:
                # if the result is not failed, stop trying
                break
 def run(self, terms, variables=None, **kwargs):
     vars_copy = variables.copy() if variables else {}
     vars_copy.update(kwargs)
     cond = Conditional(loader=self._loader)
     cond.when = terms
     return cond.evaluate_conditional(self._templar, vars_copy)
Exemple #21
0
                except ValueError, e:
                    return dict(failed=True, msg="The async task did not return valid JSON: %s" % str(e))

                if self._task.poll > 0:
                    result = self._poll_async_result(result=result)

            # update the local copy of vars with the registered value, if specified
            if self._task.register:
                vars_copy[self._task.register] = result 

            # create a conditional object to evaluate task conditions
            cond = Conditional(loader=self._loader)

            # FIXME: make sure until is mutually exclusive with changed_when/failed_when
            if self._task.until:
                cond.when = self._task.until
                if cond.evaluate_conditional(vars_copy):
                    break
            elif (self._task.changed_when or self._task.failed_when) and 'skipped' not in result:
                if self._task.changed_when:
                    cond.when = [ self._task.changed_when ]
                    result['changed'] = cond.evaluate_conditional(vars_copy)
                if self._task.failed_when:
                    cond.when = [ self._task.failed_when ]
                    failed_when_result = cond.evaluate_conditional(vars_copy)
                    result['failed_when_result'] = result['failed'] = failed_when_result
                    if failed_when_result:
                        break
            elif 'failed' not in result and result.get('rc', 0) == 0:
                # if the result is not failed, stop trying
                break
Exemple #22
0
    def _execute(self, variables=None):
        '''
        The primary workhorse of the executor system, this runs the task
        on the specified host (which may be the delegated_to host) and handles
        the retry/until and block rescue/always execution
        '''

        if variables is None:
            variables = self._job_vars

        templar = Templar(loader=self._loader, shared_loader_obj=self._shared_loader_obj, variables=variables)

        context_validation_error = None
        try:
            # apply the given task's information to the connection info,
            # which may override some fields already set by the play or
            # the options specified on the command line
            self._play_context = self._play_context.set_task_and_variable_override(task=self._task, variables=variables, templar=templar)

            # fields set from the play/task may be based on variables, so we have to
            # do the same kind of post validation step on it here before we use it.
            self._play_context.post_validate(templar=templar)

            # now that the play context is finalized, if the remote_addr is not set
            # default to using the host's address field as the remote address
            if not self._play_context.remote_addr:
                self._play_context.remote_addr = self._host.address

            # We also add "magic" variables back into the variables dict to make sure
            # a certain subset of variables exist.
            self._play_context.update_vars(variables)
        except AnsibleError as e:
            # save the error, which we'll raise later if we don't end up
            # skipping this task during the conditional evaluation step
            context_validation_error = e

        # Evaluate the conditional (if any) for this task, which we do before running
        # the final task post-validation. We do this before the post validation due to
        # the fact that the conditional may specify that the task be skipped due to a
        # variable not being present which would otherwise cause validation to fail
        try:
            if not self._task.evaluate_conditional(templar, variables):
                display.debug("when evaluation failed, skipping this task")
                return dict(changed=False, skipped=True, skip_reason='Conditional check failed', _ansible_no_log=self._play_context.no_log)
        except AnsibleError:
            # skip conditional exception in the case of includes as the vars needed might not be avaiable except in the included tasks or due to tags
            if self._task.action != 'include':
                raise

        # if we ran into an error while setting up the PlayContext, raise it now
        if context_validation_error is not None:
            raise context_validation_error

        # if this task is a TaskInclude, we just return now with a success code so the
        # main thread can expand the task list for the given host
        if self._task.action == 'include':
            include_variables = self._task.args.copy()
            include_file = include_variables.pop('_raw_params', None)
            if not include_file:
                return dict(failed=True, msg="No include file was specified to the include")

            include_file = templar.template(include_file)
            return dict(include=include_file, include_variables=include_variables)

        # Now we do final validation on the task, which sets all fields to their final values.
        self._task.post_validate(templar=templar)
        if '_variable_params' in self._task.args:
            variable_params = self._task.args.pop('_variable_params')
            if isinstance(variable_params, dict):
                display.deprecated("Using variables for task params is unsafe, especially if the variables come from an external source like facts")
                variable_params.update(self._task.args)
                self._task.args = variable_params

        # get the connection and the handler for this execution
        if not self._connection or not getattr(self._connection, 'connected', False) or self._play_context.remote_addr != self._connection._play_context.remote_addr:
            self._connection = self._get_connection(variables=variables, templar=templar)
            self._connection.set_host_overrides(host=self._host)
        else:
            # if connection is reused, its _play_context is no longer valid and needs
            # to be replaced with the one templated above, in case other data changed
            self._connection._play_context = self._play_context

        self._handler = self._get_action_handler(connection=self._connection, templar=templar)

        # And filter out any fields which were set to default(omit), and got the omit token value
        omit_token = variables.get('omit')
        if omit_token is not None:
            self._task.args = dict((i[0], i[1]) for i in iteritems(self._task.args) if i[1] != omit_token)

        # Read some values from the task, so that we can modify them if need be
        if self._task.until is not None:
            retries = self._task.retries
            if retries <= 0:
                retries = 1
        else:
            retries = 1

        delay = self._task.delay
        if delay < 0:
            delay = 1

        # make a copy of the job vars here, in case we need to update them
        # with the registered variable value later on when testing conditions
        vars_copy = variables.copy()

        display.debug("starting attempt loop")
        result = None
        for attempt in range(retries):
            display.debug("running the handler")
            try:
                result = self._handler.run(task_vars=variables)
            except AnsibleConnectionFailure as e:
                return dict(unreachable=True, msg=to_unicode(e))
            display.debug("handler run complete")

            # preserve no log
            result["_ansible_no_log"] = self._play_context.no_log

            # update the local copy of vars with the registered value, if specified,
            # or any facts which may have been generated by the module execution
            if self._task.register:
                vars_copy[self._task.register] = wrap_var(result.copy())

            if self._task.async > 0:
                # the async_wrapper module returns dumped JSON via its stdout
                # response, so we parse it here and replace the result
                try:
                    if 'skipped' in result and result['skipped'] or 'failed' in result and result['failed']:
                        return result
                    result = json.loads(result.get('stdout'))
                except (TypeError, ValueError) as e:
                    return dict(failed=True, msg=u"The async task did not return valid JSON: %s" % to_unicode(e))

                if self._task.poll > 0:
                    result = self._poll_async_result(result=result, templar=templar)

                # ensure no log is preserved
                result["_ansible_no_log"] = self._play_context.no_log

            # helper methods for use below in evaluating changed/failed_when
            def _evaluate_changed_when_result(result):
                if self._task.changed_when is not None and self._task.changed_when:
                    cond = Conditional(loader=self._loader)
                    cond.when = self._task.changed_when
                    result['changed'] = cond.evaluate_conditional(templar, vars_copy)

            def _evaluate_failed_when_result(result):
                if self._task.failed_when:
                    cond = Conditional(loader=self._loader)
                    cond.when = self._task.failed_when
                    failed_when_result = cond.evaluate_conditional(templar, vars_copy)
                    result['failed_when_result'] = result['failed'] = failed_when_result
                else:
                    failed_when_result = False
                return failed_when_result

            if 'ansible_facts' in result:
                vars_copy.update(result['ansible_facts'])

            # set the failed property if the result has a non-zero rc. This will be
            # overridden below if the failed_when property is set
            if result.get('rc', 0) != 0:
                result['failed'] = True

            # if we didn't skip this task, use the helpers to evaluate the changed/
            # failed_when properties
            if 'skipped' not in result:
                _evaluate_changed_when_result(result)
                _evaluate_failed_when_result(result)

            if attempt < retries - 1:
                cond = Conditional(loader=self._loader)
                cond.when = self._task.until
                if cond.evaluate_conditional(templar, vars_copy):
                    break
                else:
                    # no conditional check, or it failed, so sleep for the specified time
                    result['attempts'] = attempt + 1
                    result['retries'] = retries
                    result['_ansible_retry'] = True
                    display.debug('Retrying task, attempt %d of %d' % (attempt + 1, retries))
                    self._rslt_q.put(TaskResult(self._host, self._task, result), block=False)
                    time.sleep(delay)
Exemple #23
0
    def _execute(self, variables=None):
        '''
        The primary workhorse of the executor system, this runs the task
        on the specified host (which may be the delegated_to host) and handles
        the retry/until and block rescue/always execution
        '''

        if variables is None:
            variables = self._job_vars

        templar = Templar(loader=self._loader,
                          shared_loader_obj=self._shared_loader_obj,
                          variables=variables)

        context_validation_error = None
        try:
            # apply the given task's information to the connection info,
            # which may override some fields already set by the play or
            # the options specified on the command line
            self._play_context = self._play_context.set_task_and_variable_override(
                task=self._task, variables=variables, templar=templar)

            # fields set from the play/task may be based on variables, so we have to
            # do the same kind of post validation step on it here before we use it.
            self._play_context.post_validate(templar=templar)

            # now that the play context is finalized, if the remote_addr is not set
            # default to using the host's address field as the remote address
            if not self._play_context.remote_addr:
                self._play_context.remote_addr = self._host.address

            # We also add "magic" variables back into the variables dict to make sure
            # a certain subset of variables exist.
            self._play_context.update_vars(variables)

            # FIXME: update connection/shell plugin options
        except AnsibleError as e:
            # save the error, which we'll raise later if we don't end up
            # skipping this task during the conditional evaluation step
            context_validation_error = e

        # Evaluate the conditional (if any) for this task, which we do before running
        # the final task post-validation. We do this before the post validation due to
        # the fact that the conditional may specify that the task be skipped due to a
        # variable not being present which would otherwise cause validation to fail
        try:
            if not self._task.evaluate_conditional(templar, variables):
                display.debug("when evaluation is False, skipping this task")
                return dict(changed=False,
                            skipped=True,
                            skip_reason='Conditional result was False',
                            _ansible_no_log=self._play_context.no_log)
        except AnsibleError:
            # loop error takes precedence
            if self._loop_eval_error is not None:
                raise self._loop_eval_error
            # skip conditional exception in the case of includes as the vars needed might not be available except in the included tasks or due to tags
            if self._task.action not in [
                    'include', 'include_tasks', 'include_role'
            ]:
                raise

        # Not skipping, if we had loop error raised earlier we need to raise it now to halt the execution of this task
        if self._loop_eval_error is not None:
            raise self._loop_eval_error

        # if we ran into an error while setting up the PlayContext, raise it now
        if context_validation_error is not None:
            raise context_validation_error

        # if this task is a TaskInclude, we just return now with a success code so the
        # main thread can expand the task list for the given host
        if self._task.action in ('include', 'include_tasks'):
            include_variables = self._task.args.copy()
            include_file = include_variables.pop('_raw_params', None)
            if not include_file:
                return dict(failed=True,
                            msg="No include file was specified to the include")

            include_file = templar.template(include_file)
            return dict(include=include_file,
                        include_variables=include_variables)

        # if this task is a IncludeRole, we just return now with a success code so the main thread can expand the task list for the given host
        elif self._task.action == 'include_role':
            include_variables = self._task.args.copy()
            return dict(include_role=self._task,
                        include_variables=include_variables)

        # Now we do final validation on the task, which sets all fields to their final values.
        self._task.post_validate(templar=templar)
        if '_variable_params' in self._task.args:
            variable_params = self._task.args.pop('_variable_params')
            if isinstance(variable_params, dict):
                display.deprecated(
                    "Using variables for task params is unsafe, especially if the variables come from an external source like facts",
                    version="2.6")
                variable_params.update(self._task.args)
                self._task.args = variable_params

        # get the connection and the handler for this execution
        if (not self._connection
                or not getattr(self._connection, 'connected', False)
                or self._play_context.remote_addr !=
                self._connection._play_context.remote_addr):
            self._connection = self._get_connection(variables=variables,
                                                    templar=templar)
            hostvars = variables.get('hostvars', None)
            # only template the vars if the connection actually implements set_host_overrides
            # NB: this is expensive, and should be removed once connection-specific vars are being handled by play_context
            sho_impl = getattr(type(self._connection), 'set_host_overrides',
                               None)
            if hostvars and sho_impl and sho_impl != ConnectionBase.set_host_overrides:
                try:
                    target_hostvars = hostvars.get(self._host.name)
                except:
                    # FIXME: this should catch the j2undefined error here
                    #        specifically instead of all exceptions
                    target_hostvars = dict()
                self._connection.set_host_overrides(host=self._host,
                                                    hostvars=target_hostvars)
        else:
            # if connection is reused, its _play_context is no longer valid and needs
            # to be replaced with the one templated above, in case other data changed
            self._connection._play_context = self._play_context

        self._handler = self._get_action_handler(connection=self._connection,
                                                 templar=templar)

        # And filter out any fields which were set to default(omit), and got the omit token value
        omit_token = variables.get('omit')
        if omit_token is not None:
            self._task.args = dict((i[0], i[1])
                                   for i in iteritems(self._task.args)
                                   if i[1] != omit_token)

        # Read some values from the task, so that we can modify them if need be
        if self._task.until:
            retries = self._task.retries
            if retries is None:
                retries = 3
            elif retries <= 0:
                retries = 1
            else:
                retries += 1
        else:
            retries = 1

        delay = self._task.delay
        if delay < 0:
            delay = 1

        # make a copy of the job vars here, in case we need to update them
        # with the registered variable value later on when testing conditions
        vars_copy = variables.copy()

        display.debug("starting attempt loop")
        result = None
        for attempt in range(1, retries + 1):
            display.debug("running the handler")
            try:
                result = self._handler.run(task_vars=variables)
            except AnsibleActionSkip as e:
                return dict(skipped=True, msg=to_text(e))
            except AnsibleActionFail as e:
                return dict(failed=True, msg=to_text(e))
            except AnsibleConnectionFailure as e:
                return dict(unreachable=True, msg=to_text(e))
            display.debug("handler run complete")

            # preserve no log
            result["_ansible_no_log"] = self._play_context.no_log

            # update the local copy of vars with the registered value, if specified,
            # or any facts which may have been generated by the module execution
            if self._task.register:
                vars_copy[self._task.register] = wrap_var(result.copy())

            if self._task. async > 0:
                if self._task.poll > 0 and not result.get(
                        'skipped') and not result.get('failed'):
                    result = self._poll_async_result(result=result,
                                                     templar=templar,
                                                     task_vars=vars_copy)
                    # FIXME callback 'v2_runner_on_async_poll' here

                # ensure no log is preserved
                result["_ansible_no_log"] = self._play_context.no_log

            # helper methods for use below in evaluating changed/failed_when
            def _evaluate_changed_when_result(result):
                if self._task.changed_when is not None and self._task.changed_when:
                    cond = Conditional(loader=self._loader)
                    cond.when = self._task.changed_when
                    result['changed'] = cond.evaluate_conditional(
                        templar, vars_copy)

            def _evaluate_failed_when_result(result):
                if self._task.failed_when:
                    cond = Conditional(loader=self._loader)
                    cond.when = self._task.failed_when
                    failed_when_result = cond.evaluate_conditional(
                        templar, vars_copy)
                    result['failed_when_result'] = result[
                        'failed'] = failed_when_result
                else:
                    failed_when_result = False
                return failed_when_result

            if 'ansible_facts' in result:
                vars_copy.update(result['ansible_facts'])

            # set the failed property if it was missing.
            if 'failed' not in result:
                # rc is here for backwards compatibility and modules that use it instead of 'failed'
                if 'rc' in result and result['rc'] not in [0, "0"]:
                    result['failed'] = True
                else:
                    result['failed'] = False

            # set the changed property if it was missing.
            if 'changed' not in result:
                result['changed'] = False

            # if we didn't skip this task, use the helpers to evaluate the changed/
            # failed_when properties
            if 'skipped' not in result:
                _evaluate_changed_when_result(result)
                _evaluate_failed_when_result(result)

            if retries > 1:
                cond = Conditional(loader=self._loader)
                cond.when = self._task.until
                result['attempts'] = attempt
                if cond.evaluate_conditional(templar, vars_copy):
                    break
                else:
                    # no conditional check, or it failed, so sleep for the specified time
                    if attempt < retries:
                        result['_ansible_retry'] = True
                        result['retries'] = retries
                        display.debug('Retrying task, attempt %d of %d' %
                                      (attempt, retries))
                        self._rslt_q.put(TaskResult(
                            self._host.name,
                            self._task._uuid,
                            result,
                            task_fields=self._task.dump_attrs()),
                                         block=False)
                        time.sleep(delay)
    def _execute(self, variables=None):
        '''
        The primary workhorse of the executor system, this runs the task
        on the specified host (which may be the delegated_to host) and handles
        the retry/until and block rescue/always execution
        '''

        if variables is None:
            variables = self._job_vars

        templar = Templar(loader=self._loader, shared_loader_obj=self._shared_loader_obj, variables=variables)

        # apply the given task's information to the connection info,
        # which may override some fields already set by the play or
        # the options specified on the command line
        self._play_context = self._play_context.set_task_and_variable_override(task=self._task, variables=variables, templar=templar)

        # fields set from the play/task may be based on variables, so we have to
        # do the same kind of post validation step on it here before we use it.
        # We also add "magic" variables back into the variables dict to make sure
        # a certain subset of variables exist.
        self._play_context.update_vars(variables)
        self._play_context.post_validate(templar=templar)

        # Evaluate the conditional (if any) for this task, which we do before running
        # the final task post-validation. We do this before the post validation due to
        # the fact that the conditional may specify that the task be skipped due to a
        # variable not being present which would otherwise cause validation to fail
        if not self._task.evaluate_conditional(templar, variables):
            self._display.debug("when evaulation failed, skipping this task")
            return dict(changed=False, skipped=True, skip_reason='Conditional check failed', _ansible_no_log=self._play_context.no_log)

        # Now we do final validation on the task, which sets all fields to their final values.
        # In the case of debug tasks, we save any 'var' params and restore them after validating
        # so that variables are not replaced too early.
        prev_var = None
        if self._task.action == 'debug' and 'var' in self._task.args:
            prev_var = self._task.args.pop('var')

        original_args = self._task.args.copy()
        self._task.post_validate(templar=templar)
        if '_variable_params' in self._task.args:
            variable_params = self._task.args.pop('_variable_params')
            if isinstance(variable_params, dict):
                self._display.deprecated("Using variables for task params is unsafe, especially if the variables come from an external source like facts")
                variable_params.update(self._task.args)
                self._task.args = variable_params

        if prev_var is not None:
            self._task.args['var'] = prev_var

        # if this task is a TaskInclude, we just return now with a success code so the
        # main thread can expand the task list for the given host
        if self._task.action == 'include':
            include_variables = original_args
            include_file = include_variables.get('_raw_params')
            del include_variables['_raw_params']
            return dict(include=include_file, include_variables=include_variables)

        # get the connection and the handler for this execution
        self._connection = self._get_connection(variables=variables, templar=templar)
        self._connection.set_host_overrides(host=self._host)

        self._handler = self._get_action_handler(connection=self._connection, templar=templar)

        # And filter out any fields which were set to default(omit), and got the omit token value
        omit_token = variables.get('omit')
        if omit_token is not None:
            self._task.args = dict((i[0], i[1]) for i in iteritems(self._task.args) if i[1] != omit_token)

        # Read some values from the task, so that we can modify them if need be
        retries = self._task.retries
        if retries <= 0:
            retries = 1

        delay = self._task.delay
        if delay < 0:
            delay = 1

        # make a copy of the job vars here, in case we need to update them
        # with the registered variable value later on when testing conditions
        vars_copy = variables.copy()

        self._display.debug("starting attempt loop")
        result = None
        for attempt in range(retries):
            if attempt > 0:
                # FIXME: this should use the self._display.callback/message passing mechanism
                self._display.display("FAILED - RETRYING: %s (%d retries left). Result was: %s" % (self._task, retries-attempt, result), color="red")
                result['attempts'] = attempt + 1

            self._display.debug("running the handler")
            try:
                result = self._handler.run(task_vars=variables)
            except AnsibleConnectionFailure as e:
                return dict(unreachable=True, msg=str(e))
            self._display.debug("handler run complete")

            if self._task.async > 0:
                # the async_wrapper module returns dumped JSON via its stdout
                # response, so we parse it here and replace the result
                try:
                    result = json.loads(result.get('stdout'))
                except (TypeError, ValueError) as e:
                    return dict(failed=True, msg="The async task did not return valid JSON: %s" % str(e))

                if self._task.poll > 0:
                    result = self._poll_async_result(result=result, templar=templar)

            # update the local copy of vars with the registered value, if specified,
            # or any facts which may have been generated by the module execution
            if self._task.register:
                vars_copy[self._task.register] = result 

            if 'ansible_facts' in result:
                vars_copy.update(result['ansible_facts'])

            # create a conditional object to evaluate task conditions
            cond = Conditional(loader=self._loader)

            def _evaluate_changed_when_result(result):
                if self._task.changed_when is not None:
                    cond.when = [ self._task.changed_when ]
                    result['changed'] = cond.evaluate_conditional(templar, vars_copy)

            def _evaluate_failed_when_result(result):
                if self._task.failed_when is not None:
                    cond.when = [ self._task.failed_when ]
                    failed_when_result = cond.evaluate_conditional(templar, vars_copy)
                    result['failed_when_result'] = result['failed'] = failed_when_result
                    return failed_when_result
                return False

            if self._task.until:
                cond.when = self._task.until
                if cond.evaluate_conditional(templar, vars_copy):
                    _evaluate_changed_when_result(result)
                    _evaluate_failed_when_result(result)
                    break
            elif (self._task.changed_when is not None or self._task.failed_when is not None) and 'skipped' not in result:
                    _evaluate_changed_when_result(result)
                    if _evaluate_failed_when_result(result):
                        break
            elif 'failed' not in result:
                if result.get('rc', 0) != 0:
                    result['failed'] = True
                else:
                    # if the result is not failed, stop trying
                    break

            if attempt < retries - 1:
                time.sleep(delay)
            else:
                _evaluate_changed_when_result(result)
                _evaluate_failed_when_result(result)
Exemple #25
0
    def _execute(self, variables=None):
        '''
        The primary workhorse of the executor system, this runs the task
        on the specified host (which may be the delegated_to host) and handles
        the retry/until and block rescue/always execution
        '''

        if variables is None:
            variables = self._job_vars

        templar = Templar(loader=self._loader, shared_loader_obj=self._shared_loader_obj, variables=variables)

        context_validation_error = None
        try:
            # TODO: remove play_context as this does not take delegation into account, task itself should hold values
            #  for connection/shell/become/terminal plugin options to finalize.
            #  Kept for now for backwards compatibility and a few functions that are still exclusive to it.

            # apply the given task's information to the connection info,
            # which may override some fields already set by the play or
            # the options specified on the command line
            self._play_context = self._play_context.set_task_and_variable_override(task=self._task, variables=variables, templar=templar)

            # fields set from the play/task may be based on variables, so we have to
            # do the same kind of post validation step on it here before we use it.
            self._play_context.post_validate(templar=templar)

            # now that the play context is finalized, if the remote_addr is not set
            # default to using the host's address field as the remote address
            if not self._play_context.remote_addr:
                self._play_context.remote_addr = self._host.address

            # We also add "magic" variables back into the variables dict to make sure
            # a certain subset of variables exist.
            self._play_context.update_vars(variables)

        except AnsibleError as e:
            # save the error, which we'll raise later if we don't end up
            # skipping this task during the conditional evaluation step
            context_validation_error = e

        # Evaluate the conditional (if any) for this task, which we do before running
        # the final task post-validation. We do this before the post validation due to
        # the fact that the conditional may specify that the task be skipped due to a
        # variable not being present which would otherwise cause validation to fail
        try:
            if not self._task.evaluate_conditional(templar, variables):
                display.debug("when evaluation is False, skipping this task")
                return dict(changed=False, skipped=True, skip_reason='Conditional result was False', _ansible_no_log=self._play_context.no_log)
        except AnsibleError as e:
            # loop error takes precedence
            if self._loop_eval_error is not None:
                # Display the error from the conditional as well to prevent
                # losing information useful for debugging.
                display.v(to_text(e))
                raise self._loop_eval_error  # pylint: disable=raising-bad-type
            raise

        # Not skipping, if we had loop error raised earlier we need to raise it now to halt the execution of this task
        if self._loop_eval_error is not None:
            raise self._loop_eval_error  # pylint: disable=raising-bad-type

        # if we ran into an error while setting up the PlayContext, raise it now
        if context_validation_error is not None:
            raise context_validation_error  # pylint: disable=raising-bad-type

        # if this task is a TaskInclude, we just return now with a success code so the
        # main thread can expand the task list for the given host
        if self._task.action in C._ACTION_ALL_INCLUDE_TASKS:
            include_args = self._task.args.copy()
            include_file = include_args.pop('_raw_params', None)
            if not include_file:
                return dict(failed=True, msg="No include file was specified to the include")

            include_file = templar.template(include_file)
            return dict(include=include_file, include_args=include_args)

        # if this task is a IncludeRole, we just return now with a success code so the main thread can expand the task list for the given host
        elif self._task.action in C._ACTION_INCLUDE_ROLE:
            include_args = self._task.args.copy()
            return dict(include_args=include_args)

        # Now we do final validation on the task, which sets all fields to their final values.
        try:
            self._task.post_validate(templar=templar)
        except AnsibleError:
            raise
        except Exception:
            return dict(changed=False, failed=True, _ansible_no_log=self._play_context.no_log, exception=to_text(traceback.format_exc()))
        if '_variable_params' in self._task.args:
            variable_params = self._task.args.pop('_variable_params')
            if isinstance(variable_params, dict):
                if C.INJECT_FACTS_AS_VARS:
                    display.warning("Using a variable for a task's 'args' is unsafe in some situations "
                                    "(see https://docs.ansible.com/ansible/devel/reference_appendices/faq.html#argsplat-unsafe)")
                variable_params.update(self._task.args)
                self._task.args = variable_params

        if self._task.delegate_to:
            # use vars from delegated host (which already include task vars) instead of original host
            cvars = variables.get('ansible_delegated_vars', {}).get(self._task.delegate_to, {})
            orig_vars = templar.available_variables
        else:
            # just use normal host vars
            cvars = orig_vars = variables

        templar.available_variables = cvars

        # get the connection and the handler for this execution
        if (not self._connection or
                not getattr(self._connection, 'connected', False) or
                self._play_context.remote_addr != self._connection._play_context.remote_addr):
            self._connection = self._get_connection(cvars, templar)
        else:
            # if connection is reused, its _play_context is no longer valid and needs
            # to be replaced with the one templated above, in case other data changed
            self._connection._play_context = self._play_context

        plugin_vars = self._set_connection_options(cvars, templar)
        templar.available_variables = orig_vars

        # get handler
        self._handler = self._get_action_handler(connection=self._connection, templar=templar)

        # Apply default params for action/module, if present
        self._task.args = get_action_args_with_defaults(
            self._task.action, self._task.args, self._task.module_defaults, templar, self._task._ansible_internal_redirect_list
        )

        # And filter out any fields which were set to default(omit), and got the omit token value
        omit_token = variables.get('omit')
        if omit_token is not None:
            self._task.args = remove_omit(self._task.args, omit_token)

        # Read some values from the task, so that we can modify them if need be
        if self._task.until:
            retries = self._task.retries
            if retries is None:
                retries = 3
            elif retries <= 0:
                retries = 1
            else:
                retries += 1
        else:
            retries = 1

        delay = self._task.delay
        if delay < 0:
            delay = 1

        # make a copy of the job vars here, in case we need to update them
        # with the registered variable value later on when testing conditions
        vars_copy = variables.copy()

        display.debug("starting attempt loop")
        result = None
        for attempt in xrange(1, retries + 1):
            display.debug("running the handler")
            try:
                if self._task.timeout:
                    old_sig = signal.signal(signal.SIGALRM, task_timeout)
                    signal.alarm(self._task.timeout)
                result = self._handler.run(task_vars=variables)
            except AnsibleActionSkip as e:
                return dict(skipped=True, msg=to_text(e))
            except AnsibleActionFail as e:
                return dict(failed=True, msg=to_text(e))
            except AnsibleConnectionFailure as e:
                return dict(unreachable=True, msg=to_text(e))
            except TaskTimeoutError as e:
                msg = 'The %s action failed to execute in the expected time frame (%d) and was terminated' % (self._task.action, self._task.timeout)
                return dict(failed=True, msg=msg)
            finally:
                if self._task.timeout:
                    signal.alarm(0)
                    old_sig = signal.signal(signal.SIGALRM, old_sig)
                self._handler.cleanup()
            display.debug("handler run complete")

            # preserve no log
            result["_ansible_no_log"] = self._play_context.no_log

            # update the local copy of vars with the registered value, if specified,
            # or any facts which may have been generated by the module execution
            if self._task.register:
                if not isidentifier(self._task.register):
                    raise AnsibleError("Invalid variable name in 'register' specified: '%s'" % self._task.register)

                vars_copy[self._task.register] = result = wrap_var(result)

            if self._task.async_val > 0:
                if self._task.poll > 0 and not result.get('skipped') and not result.get('failed'):
                    result = self._poll_async_result(result=result, templar=templar, task_vars=vars_copy)

                # ensure no log is preserved
                result["_ansible_no_log"] = self._play_context.no_log

            # helper methods for use below in evaluating changed/failed_when
            def _evaluate_changed_when_result(result):
                if self._task.changed_when is not None and self._task.changed_when:
                    cond = Conditional(loader=self._loader)
                    cond.when = self._task.changed_when
                    result['changed'] = cond.evaluate_conditional(templar, vars_copy)

            def _evaluate_failed_when_result(result):
                if self._task.failed_when:
                    cond = Conditional(loader=self._loader)
                    cond.when = self._task.failed_when
                    failed_when_result = cond.evaluate_conditional(templar, vars_copy)
                    result['failed_when_result'] = result['failed'] = failed_when_result
                else:
                    failed_when_result = False
                return failed_when_result

            if 'ansible_facts' in result:
                if self._task.action in C._ACTION_WITH_CLEAN_FACTS:
                    vars_copy.update(result['ansible_facts'])
                else:
                    # TODO: cleaning of facts should eventually become part of taskresults instead of vars
                    af = wrap_var(result['ansible_facts'])
                    vars_copy['ansible_facts'] = combine_vars(vars_copy.get('ansible_facts', {}), namespace_facts(af))
                    if C.INJECT_FACTS_AS_VARS:
                        vars_copy.update(clean_facts(af))

            # set the failed property if it was missing.
            if 'failed' not in result:
                # rc is here for backwards compatibility and modules that use it instead of 'failed'
                if 'rc' in result and result['rc'] not in [0, "0"]:
                    result['failed'] = True
                else:
                    result['failed'] = False

            # Make attempts and retries available early to allow their use in changed/failed_when
            if self._task.until:
                result['attempts'] = attempt

            # set the changed property if it was missing.
            if 'changed' not in result:
                result['changed'] = False

            # re-update the local copy of vars with the registered value, if specified,
            # or any facts which may have been generated by the module execution
            # This gives changed/failed_when access to additional recently modified
            # attributes of result
            if self._task.register:
                vars_copy[self._task.register] = result = wrap_var(result)

            # if we didn't skip this task, use the helpers to evaluate the changed/
            # failed_when properties
            if 'skipped' not in result:
                _evaluate_changed_when_result(result)
                _evaluate_failed_when_result(result)

            if retries > 1:
                cond = Conditional(loader=self._loader)
                cond.when = self._task.until
                if cond.evaluate_conditional(templar, vars_copy):
                    break
                else:
                    # no conditional check, or it failed, so sleep for the specified time
                    if attempt < retries:
                        result['_ansible_retry'] = True
                        result['retries'] = retries
                        display.debug('Retrying task, attempt %d of %d' % (attempt, retries))
                        self._final_q.send_task_result(self._host.name, self._task._uuid, result, task_fields=self._task.dump_attrs())
                        time.sleep(delay)
                        self._handler = self._get_action_handler(connection=self._connection, templar=templar)
        else:
            if retries > 1:
                # we ran out of attempts, so mark the result as failed
                result['attempts'] = retries - 1
                result['failed'] = True

        # do the final update of the local variables here, for both registered
        # values and any facts which may have been created
        if self._task.register:
            variables[self._task.register] = result = wrap_var(result)

        if 'ansible_facts' in result:
            if self._task.action in C._ACTION_WITH_CLEAN_FACTS:
                variables.update(result['ansible_facts'])
            else:
                # TODO: cleaning of facts should eventually become part of taskresults instead of vars
                af = wrap_var(result['ansible_facts'])
                variables['ansible_facts'] = combine_vars(variables.get('ansible_facts', {}), namespace_facts(af))
                if C.INJECT_FACTS_AS_VARS:
                    variables.update(clean_facts(af))

        # save the notification target in the result, if it was specified, as
        # this task may be running in a loop in which case the notification
        # may be item-specific, ie. "notify: service {{item}}"
        if self._task.notify is not None:
            result['_ansible_notify'] = self._task.notify

        # add the delegated vars to the result, so we can reference them
        # on the results side without having to do any further templating
        # also now add conneciton vars results when delegating
        if self._task.delegate_to:
            result["_ansible_delegated_vars"] = {'ansible_delegated_host': self._task.delegate_to}
            for k in plugin_vars:
                result["_ansible_delegated_vars"][k] = cvars.get(k)

        # and return
        display.debug("attempt loop complete, returning result")
        return result
 def _evaluate_changed_when_result(result):
     if self._task.changed_when is not None and self._task.changed_when:
         cond = Conditional(loader=self._loader)
         cond.when = self._task.changed_when
         result['changed'] = cond.evaluate_conditional(templar, vars_copy)
Exemple #27
0
    def _execute(self, variables=None):
        '''
        The primary workhorse of the executor system, this runs the task
        on the specified host (which may be the delegated_to host) and handles
        the retry/until and block rescue/always execution
        '''

        if variables is None:
            variables = self._job_vars

        templar = Templar(loader=self._loader, shared_loader_obj=self._shared_loader_obj, variables=variables)

        # fields set from the play/task may be based on variables, so we have to
        # do the same kind of post validation step on it here before we use it.
        self._play_context.post_validate(templar=templar)

        # now that the play context is finalized, we can add 'magic'
        # variables to the variable dictionary
        self._play_context.update_vars(variables)

        # Evaluate the conditional (if any) for this task, which we do before running
        # the final task post-validation. We do this before the post validation due to
        # the fact that the conditional may specify that the task be skipped due to a
        # variable not being present which would otherwise cause validation to fail
        if not self._task.evaluate_conditional(templar, variables):
            debug("when evaulation failed, skipping this task")
            return dict(changed=False, skipped=True, skip_reason='Conditional check failed')

        # Now we do final validation on the task, which sets all fields to their final values.
        # In the case of debug tasks, we save any 'var' params and restore them after validating
        # so that variables are not replaced too early.
        prev_var = None
        if self._task.action == 'debug' and 'var' in self._task.args:
            prev_var = self._task.args.pop('var')

        self._task.post_validate(templar=templar)
        if '_variable_params' in self._task.args:
            variable_params = self._task.args.pop('_variable_params')
            if isinstance(variable_params, dict):
                self._display.deprecated("Using variables for task params is unsafe, especially if the variables come from an external source like facts")
                variable_params.update(self._task.args)
                self._task.args = variable_params

        if prev_var is not None:
            self._task.args['var'] = prev_var

        # if this task is a TaskInclude, we just return now with a success code so the
        # main thread can expand the task list for the given host
        if self._task.action == 'include':
            include_variables = self._task.args.copy()
            include_file = include_variables.get('_raw_params')
            del include_variables['_raw_params']
            return dict(include=include_file, include_variables=include_variables)

        # get the connection and the handler for this execution
        self._connection = self._get_connection(variables)
        self._connection.set_host_overrides(host=self._host)

        self._handler = self._get_action_handler(connection=self._connection, templar=templar)

        # And filter out any fields which were set to default(omit), and got the omit token value
        omit_token = variables.get('omit')
        if omit_token is not None:
            self._task.args = dict(filter(lambda x: x[1] != omit_token, self._task.args.iteritems()))

        # Read some values from the task, so that we can modify them if need be
        retries = self._task.retries
        if retries <= 0:
            retries = 1

        delay = self._task.delay
        if delay < 0:
            delay = 1

        # make a copy of the job vars here, in case we need to update them
        # with the registered variable value later on when testing conditions
        vars_copy = variables.copy()

        debug("starting attempt loop")
        result = None
        for attempt in range(retries):
            if attempt > 0:
                # FIXME: this should use the callback/message passing mechanism
                print("FAILED - RETRYING: %s (%d retries left). Result was: %s" % (self._task, retries-attempt, result))
                result['attempts'] = attempt + 1

            debug("running the handler")
            result = self._handler.run(task_vars=variables)
            debug("handler run complete")

            if self._task.async > 0:
                # the async_wrapper module returns dumped JSON via its stdout
                # response, so we parse it here and replace the result
                try:
                    result = json.loads(result.get('stdout'))
                except (TypeError, ValueError) as e:
                    return dict(failed=True, msg="The async task did not return valid JSON: %s" % str(e))

                if self._task.poll > 0:
                    result = self._poll_async_result(result=result, templar=templar)

            # update the local copy of vars with the registered value, if specified,
            # or any facts which may have been generated by the module execution
            if self._task.register:
                vars_copy[self._task.register] = result 

            if 'ansible_facts' in result:
                vars_copy.update(result['ansible_facts'])

            # create a conditional object to evaluate task conditions
            cond = Conditional(loader=self._loader)

            # FIXME: make sure until is mutually exclusive with changed_when/failed_when
            if self._task.until:
                cond.when = self._task.until
                if cond.evaluate_conditional(templar, vars_copy):
                    break
            elif (self._task.changed_when or self._task.failed_when) and 'skipped' not in result:
                if self._task.changed_when:
                    cond.when = [ self._task.changed_when ]
                    result['changed'] = cond.evaluate_conditional(templar, vars_copy)
                if self._task.failed_when:
                    cond.when = [ self._task.failed_when ]
                    failed_when_result = cond.evaluate_conditional(templar, vars_copy)
                    result['failed_when_result'] = result['failed'] = failed_when_result
                    if failed_when_result:
                        break
            elif 'failed' not in result:
                if result.get('rc', 0) != 0:
                    result['failed'] = True
                else:
                    # if the result is not failed, stop trying
                    break

            if attempt < retries - 1:
                time.sleep(delay)
Exemple #28
0
    def _execute(self, variables=None):
        '''
        The primary workhorse of the executor system, this runs the task
        on the specified host (which may be the delegated_to host) and handles
        the retry/until and block rescue/always execution
        '''

        if variables is None:
            variables = self._job_vars

        templar = Templar(loader=self._loader, shared_loader_obj=self._shared_loader_obj, variables=variables)

        context_validation_error = None
        try:
            # apply the given task's information to the connection info,
            # which may override some fields already set by the play or
            # the options specified on the command line
            self._play_context = self._play_context.set_task_and_variable_override(task=self._task, variables=variables, templar=templar)

            # fields set from the play/task may be based on variables, so we have to
            # do the same kind of post validation step on it here before we use it.
            self._play_context.post_validate(templar=templar)

            # now that the play context is finalized, if the remote_addr is not set
            # default to using the host's address field as the remote address
            if not self._play_context.remote_addr:
                self._play_context.remote_addr = self._host.address

            # We also add "magic" variables back into the variables dict to make sure
            # a certain subset of variables exist.
            self._play_context.update_vars(variables)

            # FIXME: update connection/shell plugin options
        except AnsibleError as e:
            # save the error, which we'll raise later if we don't end up
            # skipping this task during the conditional evaluation step
            context_validation_error = e

        # Evaluate the conditional (if any) for this task, which we do before running
        # the final task post-validation. We do this before the post validation due to
        # the fact that the conditional may specify that the task be skipped due to a
        # variable not being present which would otherwise cause validation to fail
        try:
            if not self._task.evaluate_conditional(templar, variables):
                display.debug("when evaluation is False, skipping this task")
                return dict(changed=False, skipped=True, skip_reason='Conditional result was False', _ansible_no_log=self._play_context.no_log)
        except AnsibleError:
            # loop error takes precedence
            if self._loop_eval_error is not None:
                raise self._loop_eval_error  # pylint: disable=raising-bad-type
            raise

        # Not skipping, if we had loop error raised earlier we need to raise it now to halt the execution of this task
        if self._loop_eval_error is not None:
            raise self._loop_eval_error  # pylint: disable=raising-bad-type

        # if we ran into an error while setting up the PlayContext, raise it now
        if context_validation_error is not None:
            raise context_validation_error  # pylint: disable=raising-bad-type

        # if this task is a TaskInclude, we just return now with a success code so the
        # main thread can expand the task list for the given host
        if self._task.action in ('include', 'include_tasks'):
            include_variables = self._task.args.copy()
            include_file = include_variables.pop('_raw_params', None)
            if not include_file:
                return dict(failed=True, msg="No include file was specified to the include")

            include_file = templar.template(include_file)
            return dict(include=include_file, include_variables=include_variables)

        # if this task is a IncludeRole, we just return now with a success code so the main thread can expand the task list for the given host
        elif self._task.action == 'include_role':
            include_variables = self._task.args.copy()
            return dict(include_variables=include_variables)

        # Now we do final validation on the task, which sets all fields to their final values.
        self._task.post_validate(templar=templar)
        if '_variable_params' in self._task.args:
            variable_params = self._task.args.pop('_variable_params')
            if isinstance(variable_params, dict):
                display.deprecated("Using variables for task params is unsafe, especially if the variables come from an external source like facts",
                                   version="2.6")
                variable_params.update(self._task.args)
                self._task.args = variable_params

        # get the connection and the handler for this execution
        if (not self._connection or
                not getattr(self._connection, 'connected', False) or
                self._play_context.remote_addr != self._connection._play_context.remote_addr):
            self._connection = self._get_connection(variables=variables, templar=templar)
        else:
            # if connection is reused, its _play_context is no longer valid and needs
            # to be replaced with the one templated above, in case other data changed
            self._connection._play_context = self._play_context

        self._set_connection_options(variables, templar)
        self._set_shell_options(variables, templar)

        # get handler
        self._handler = self._get_action_handler(connection=self._connection, templar=templar)

        # Apply default params for action/module, if present
        # These are collected as a list of dicts, so we need to merge them
        module_defaults = {}
        for default in self._task.module_defaults:
            module_defaults.update(default)
        if module_defaults:
            module_defaults = templar.template(module_defaults)
        if self._task.action in module_defaults:
            tmp_args = module_defaults[self._task.action].copy()
            tmp_args.update(self._task.args)
            self._task.args = tmp_args

        # And filter out any fields which were set to default(omit), and got the omit token value
        omit_token = variables.get('omit')
        if omit_token is not None:
            self._task.args = remove_omit(self._task.args, omit_token)

        # Read some values from the task, so that we can modify them if need be
        if self._task.until:
            retries = self._task.retries
            if retries is None:
                retries = 3
            elif retries <= 0:
                retries = 1
            else:
                retries += 1
        else:
            retries = 1

        delay = self._task.delay
        if delay < 0:
            delay = 1

        # make a copy of the job vars here, in case we need to update them
        # with the registered variable value later on when testing conditions
        vars_copy = variables.copy()

        display.debug("starting attempt loop")
        result = None
        for attempt in range(1, retries + 1):
            display.debug("running the handler")
            try:
                result = self._handler.run(task_vars=variables)
            except AnsibleActionSkip as e:
                return dict(skipped=True, msg=to_text(e))
            except AnsibleActionFail as e:
                return dict(failed=True, msg=to_text(e))
            except AnsibleConnectionFailure as e:
                return dict(unreachable=True, msg=to_text(e))
            display.debug("handler run complete")

            # preserve no log
            result["_ansible_no_log"] = self._play_context.no_log

            # update the local copy of vars with the registered value, if specified,
            # or any facts which may have been generated by the module execution
            if self._task.register:
                vars_copy[self._task.register] = wrap_var(result)

            if self._task.async_val > 0:
                if self._task.poll > 0 and not result.get('skipped') and not result.get('failed'):
                    result = self._poll_async_result(result=result, templar=templar, task_vars=vars_copy)
                    # FIXME callback 'v2_runner_on_async_poll' here

                # ensure no log is preserved
                result["_ansible_no_log"] = self._play_context.no_log

            # helper methods for use below in evaluating changed/failed_when
            def _evaluate_changed_when_result(result):
                if self._task.changed_when is not None and self._task.changed_when:
                    cond = Conditional(loader=self._loader)
                    cond.when = self._task.changed_when
                    result['changed'] = cond.evaluate_conditional(templar, vars_copy)

            def _evaluate_failed_when_result(result):
                if self._task.failed_when:
                    cond = Conditional(loader=self._loader)
                    cond.when = self._task.failed_when
                    failed_when_result = cond.evaluate_conditional(templar, vars_copy)
                    result['failed_when_result'] = result['failed'] = failed_when_result
                else:
                    failed_when_result = False
                return failed_when_result

            if 'ansible_facts' in result:
                if self._task.action in ('set_fact', 'include_vars'):
                    vars_copy.update(result['ansible_facts'])
                else:
                    vars_copy.update(namespace_facts(result['ansible_facts']))
                    if C.INJECT_FACTS_AS_VARS:
                        vars_copy.update(clean_facts(result['ansible_facts']))

            # set the failed property if it was missing.
            if 'failed' not in result:
                # rc is here for backwards compatibility and modules that use it instead of 'failed'
                if 'rc' in result and result['rc'] not in [0, "0"]:
                    result['failed'] = True
                else:
                    result['failed'] = False

            # Make attempts and retries available early to allow their use in changed/failed_when
            if self._task.until:
                result['attempts'] = attempt

            # set the changed property if it was missing.
            if 'changed' not in result:
                result['changed'] = False

            # re-update the local copy of vars with the registered value, if specified,
            # or any facts which may have been generated by the module execution
            # This gives changed/failed_when access to additional recently modified
            # attributes of result
            if self._task.register:
                vars_copy[self._task.register] = wrap_var(result)

            # if we didn't skip this task, use the helpers to evaluate the changed/
            # failed_when properties
            if 'skipped' not in result:
                _evaluate_changed_when_result(result)
                _evaluate_failed_when_result(result)

            if retries > 1:
                cond = Conditional(loader=self._loader)
                cond.when = self._task.until
                if cond.evaluate_conditional(templar, vars_copy):
                    break
                else:
                    # no conditional check, or it failed, so sleep for the specified time
                    if attempt < retries:
                        result['_ansible_retry'] = True
                        result['retries'] = retries
                        display.debug('Retrying task, attempt %d of %d' % (attempt, retries))
                        self._rslt_q.put(TaskResult(self._host.name, self._task._uuid, result, task_fields=self._task.dump_attrs()), block=False)
                        time.sleep(delay)
        else:
            if retries > 1:
                # we ran out of attempts, so mark the result as failed
                result['attempts'] = retries - 1
                result['failed'] = True

        # do the final update of the local variables here, for both registered
        # values and any facts which may have been created
        if self._task.register:
            variables[self._task.register] = wrap_var(result)

        if 'ansible_facts' in result:
            if self._task.action in ('set_fact', 'include_vars'):
                variables.update(result['ansible_facts'])
            else:
                variables.update(namespace_facts(result['ansible_facts']))
                if C.INJECT_FACTS_AS_VARS:
                    variables.update(clean_facts(result['ansible_facts']))

        # save the notification target in the result, if it was specified, as
        # this task may be running in a loop in which case the notification
        # may be item-specific, ie. "notify: service {{item}}"
        if self._task.notify is not None:
            result['_ansible_notify'] = self._task.notify

        # add the delegated vars to the result, so we can reference them
        # on the results side without having to do any further templating
        # FIXME: we only want a limited set of variables here, so this is currently
        #        hardcoded but should be possibly fixed if we want more or if
        #        there is another source of truth we can use
        delegated_vars = variables.get('ansible_delegated_vars', dict()).get(self._task.delegate_to, dict()).copy()
        if len(delegated_vars) > 0:
            result["_ansible_delegated_vars"] = {'ansible_delegated_host': self._task.delegate_to}
            for k in ('ansible_host', ):
                result["_ansible_delegated_vars"][k] = delegated_vars.get(k)

        # and return
        display.debug("attempt loop complete, returning result")
        return result
Exemple #29
0
 def _evaluate_changed_when_result(result):
     if self._task.changed_when is not None and self._task.changed_when:
         cond = Conditional(loader=self._loader)
         cond.when = self._task.changed_when
         result['changed'] = cond.evaluate_conditional(
             templar, vars_copy)
Exemple #30
0
 def run(self, terms, variables=None, **kwargs):
     vars_copy = variables.copy() if variables else {}
     vars_copy.update(kwargs)
     cond = Conditional(loader=self._loader)
     cond.when = terms
     return [cond.evaluate_conditional(self._templar, vars_copy)]