def _poll_async_result(self, result):
'''
Polls for the specified JID to be complete
'''
async_jid = result.get('ansible_job_id')
if async_jid is None:
return dict(failed=True, msg="No job id was returned by the async task")
# Create a new psuedo-task to run the async_status module, and run
# that (with a sleep for "poll" seconds between each retry) until the
# async time limit is exceeded.
async_task = Task().load(dict(action='async_status jid=%s' % async_jid))
# Because this is an async task, the action handler is async. However,
# we need the 'normal' action handler for the status check, so get it
# now via the action_loader
normal_handler = action_loader.get(
'normal',
task=async_task,
connection=self._connection,
connection_info=self._connection_info,
loader=self._loader,
module_loader=self._module_loader,
)
time_left = self._task.async
def _poll_async_result(self, result, templar):
'''
Polls for the specified JID to be complete
'''
async_jid = result.get('ansible_job_id')
if async_jid is None:
return dict(failed=True, msg="No job id was returned by the async task")
# Create a new psuedo-task to run the async_status module, and run
# that (with a sleep for "poll" seconds between each retry) until the
# async time limit is exceeded.
async_task = Task().load(dict(action='async_status jid=%s' % async_jid))
# Because this is an async task, the action handler is async. However,
# we need the 'normal' action handler for the status check, so get it
# now via the action_loader
normal_handler = action_loader.get(
'normal',
task=async_task,
connection=self._connection,
connection_info=self._connection_info,
loader=self._loader,
templar=templar,
shared_loader_obj=self._shared_loader_obj,
)
time_left = self._task.async
def run(self, iterator, play_context):
'''
The "free" strategy is a bit more complex, in that it allows tasks to
be sent to hosts as quickly as they can be processed. This means that
some hosts may finish very quickly if run tasks result in little or no
work being done versus other systems.
The algorithm used here also tries to be more "fair" when iterating
through hosts by remembering the last host in the list to be given a task
and starting the search from there as opposed to the top of the hosts
list again, which would end up favoring hosts near the beginning of the
list.
'''
# the last host to be given a task
last_host = 0
result = True
work_to_do = True
while work_to_do and not self._tqm._terminated:
hosts_left = [host for host in self._inventory.get_hosts(iterator._play.hosts) if host.name not in self._tqm._unreachable_hosts]
if len(hosts_left) == 0:
self._tqm.send_callback('v2_playbook_on_no_hosts_remaining')
result = False
break
work_to_do = False # assume we have no more work to do
starting_host = last_host # save current position so we know when we've
# looped back around and need to break
# try and find an unblocked host with a task to run
host_results = []
while True:
host = hosts_left[last_host]
display.debug("next free host: %s" % host)
host_name = host.get_name()
# peek at the next task for the host, to see if there's
# anything to do do for this host
(state, task) = iterator.get_next_task_for_host(host, peek=True)
display.debug("free host state: %s" % state)
display.debug("free host task: %s" % task)
if host_name not in self._tqm._unreachable_hosts and task:
# set the flag so the outer loop knows we've still found
# some work which needs to be done
work_to_do = True
display.debug("this host has work to do")
# check to see if this host is blocked (still executing a previous task)
if host_name not in self._blocked_hosts or not self._blocked_hosts[host_name]:
# pop the task, mark the host blocked, and queue it
self._blocked_hosts[host_name] = True
(state, task) = iterator.get_next_task_for_host(host)
try:
action = action_loader.get(task.action, class_only=True)
except KeyError:
# we don't care here, because the action may simply not have a
# corresponding action plugin
action = None
display.debug("getting variables")
task_vars = self._variable_manager.get_vars(loader=self._loader, play=iterator._play, host=host, task=task)
self.add_tqm_variables(task_vars, play=iterator._play)
templar = Templar(loader=self._loader, variables=task_vars)
display.debug("done getting variables")
try:
task.name = text_type(templar.template(task.name, fail_on_undefined=False))
display.debug("done templating")
except:
# just ignore any errors during task name templating,
# we don't care if it just shows the raw name
display.debug("templating failed for some reason")
pass
run_once = templar.template(task.run_once) or action and getattr(action, 'BYPASS_HOST_LOOP', False)
if run_once:
if action and getattr(action, 'BYPASS_HOST_LOOP', False):
raise AnsibleError("The '%s' module bypasses the host loop, which is currently not supported in the free strategy " \
"and would instead execute for every host in the inventory list." % task.action, obj=task._ds)
else:
display.warning("Using run_once with the free strategy is not currently supported. This task will still be " \
"executed for every host in the inventory list.")
# check to see if this task should be skipped, due to it being a member of a
# role which has already run (and whether that role allows duplicate execution)
if task._role and task._role.has_run(host):
# If there is no metadata, the default behavior is to not allow duplicates,
# if there is metadata, check to see if the allow_duplicates flag was set to true
if task._role._metadata is None or task._role._metadata and not task._role._metadata.allow_duplicates:
display.debug("'%s' skipped because role has already run" % task)
del self._blocked_hosts[host_name]
continue
if task.action == 'meta':
self._execute_meta(task, play_context, iterator)
self._blocked_hosts[host_name] = False
else:
# handle step if needed, skip meta actions as they are used internally
if not self._step or self._take_step(task, host_name):
if task.any_errors_fatal:
display.warning("Using any_errors_fatal with the free strategy is not supported, as tasks are executed independently on each host")
self._tqm.send_callback('v2_playbook_on_task_start', task, is_conditional=False)
self._queue_task(host, task, task_vars, play_context)
del task_vars
else:
display.debug("%s is blocked, skipping for now" % host_name)
# move on to the next host and make sure we
# haven't gone past the end of our hosts list
last_host += 1
if last_host > len(hosts_left) - 1:
last_host = 0
# if we've looped around back to the start, break out
if last_host == starting_host:
break
results = self._process_pending_results(iterator)
host_results.extend(results)
try:
included_files = IncludedFile.process_include_results(
host_results,
self._tqm,
iterator=iterator,
inventory=self._inventory,
loader=self._loader,
variable_manager=self._variable_manager
)
except AnsibleError as e:
return False
if len(included_files) > 0:
all_blocks = dict((host, []) for host in hosts_left)
for included_file in included_files:
display.debug("collecting new blocks for %s" % included_file)
try:
new_blocks = self._load_included_file(included_file, iterator=iterator)
except AnsibleError as e:
for host in included_file._hosts:
iterator.mark_host_failed(host)
display.warning(str(e))
continue
for new_block in new_blocks:
task_vars = self._variable_manager.get_vars(loader=self._loader, play=iterator._play, task=included_file._task)
final_block = new_block.filter_tagged_tasks(play_context, task_vars)
for host in hosts_left:
if host in included_file._hosts:
all_blocks[host].append(final_block)
display.debug("done collecting new blocks for %s" % included_file)
display.debug("adding all collected blocks from %d included file(s) to iterator" % len(included_files))
for host in hosts_left:
iterator.add_tasks(host, all_blocks[host])
display.debug("done adding collected blocks to iterator")
# pause briefly so we don't spin lock
time.sleep(0.001)
# collect all the final results
results = self._wait_on_pending_results(iterator)
# run the base class run() method, which executes the cleanup function
# and runs any outstanding handlers which have been triggered
return super(StrategyModule, self).run(iterator, play_context, result)
def run(self, iterator, play_context):
'''
The linear strategy is simple - get the next task and queue
it for all hosts, then wait for the queue to drain before
moving on to the next task
'''
# iteratate over each task, while there is one left to run
result = True
work_to_do = True
while work_to_do and not self._tqm._terminated:
try:
self._display.debug(
"getting the remaining hosts for this loop")
hosts_left = self._inventory.get_hosts(iterator._play.hosts)
self._display.debug(
"done getting the remaining hosts for this loop")
# queue up this task for each host in the inventory
callback_sent = False
work_to_do = False
host_results = []
host_tasks = self._get_next_task_lockstep(hosts_left, iterator)
# skip control
skip_rest = False
choose_step = True
for (host, task) in host_tasks:
if not task:
continue
run_once = False
work_to_do = True
# test to see if the task across all hosts points to an action plugin which
# sets BYPASS_HOST_LOOP to true, or if it has run_once enabled. If so, we
# will only send this task to the first host in the list.
try:
action = action_loader.get(task.action,
class_only=True)
if task.run_once or getattr(action, 'BYPASS_HOST_LOOP',
False):
run_once = True
except KeyError:
# we don't care here, because the action may simply not have a
# corresponding action plugin
pass
# check to see if this task should be skipped, due to it being a member of a
# role which has already run (and whether that role allows duplicate execution)
if task._role and task._role.has_run(host):
# If there is no metadata, the default behavior is to not allow duplicates,
# if there is metadata, check to see if the allow_duplicates flag was set to true
if task._role._metadata is None or task._role._metadata and not task._role._metadata.allow_duplicates:
self._display.debug(
"'%s' skipped because role has already run" %
task)
continue
if task.action == 'meta':
self._execute_meta(task, play_context, iterator)
else:
# handle step if needed, skip meta actions as they are used internally
if self._step and choose_step:
if self._take_step(task):
choose_step = False
else:
skip_rest = True
break
self._display.debug("getting variables")
task_vars = self._variable_manager.get_vars(
loader=self._loader,
play=iterator._play,
host=host,
task=task)
task_vars = self.add_tqm_variables(task_vars,
play=iterator._play)
templar = Templar(loader=self._loader,
variables=task_vars)
self._display.debug("done getting variables")
if not callback_sent:
display.debug(
"sending task start callback, copying the task so we can template it temporarily"
)
saved_name = task.name
display.debug(
"done copying, going to template now")
try:
task.name = unicode(
templar.template(task.name,
fail_on_undefined=False))
display.debug("done templating")
except:
# just ignore any errors during task name templating,
# we don't care if it just shows the raw name
display.debug(
"templating failed for some reason")
pass
display.debug("here goes the callback...")
self._tqm.send_callback(
'v2_playbook_on_task_start',
task,
is_conditional=False)
task.name = saved_name
callback_sent = True
display.debug("sending task start callback")
self._blocked_hosts[host.get_name()] = True
self._queue_task(host, task, task_vars, play_context)
results = self._process_pending_results(iterator)
host_results.extend(results)
# if we're bypassing the host loop, break out now
if run_once:
break
# go to next host/task group
if skip_rest:
continue
self._display.debug(
"done queuing things up, now waiting for results queue to drain"
)
results = self._wait_on_pending_results(iterator)
host_results.extend(results)
if not work_to_do and len(iterator.get_failed_hosts()) > 0:
self._display.debug("out of hosts to run on")
self._tqm.send_callback(
'v2_playbook_on_no_hosts_remaining')
result = False
break
try:
included_files = IncludedFile.process_include_results(
host_results,
self._tqm,
iterator=iterator,
loader=self._loader,
variable_manager=self._variable_manager)
except AnsibleError, e:
return False
if len(included_files) > 0:
noop_task = Task()
noop_task.action = 'meta'
noop_task.args['_raw_params'] = 'noop'
noop_task.set_loader(iterator._play._loader)
all_blocks = dict((host, []) for host in hosts_left)
for included_file in included_files:
# included hosts get the task list while those excluded get an equal-length
# list of noop tasks, to make sure that they continue running in lock-step
try:
new_blocks = self._load_included_file(
included_file, iterator=iterator)
except AnsibleError, e:
for host in included_file._hosts:
iterator.mark_host_failed(host)
self._display.warning(str(e))
continue
for new_block in new_blocks:
noop_block = Block(parent_block=task._block)
noop_block.block = [
noop_task for t in new_block.block
]
noop_block.always = [
noop_task for t in new_block.always
]
noop_block.rescue = [
noop_task for t in new_block.rescue
]
for host in hosts_left:
if host in included_file._hosts:
task_vars = self._variable_manager.get_vars(
loader=self._loader,
play=iterator._play,
host=host,
task=included_file._task)
final_block = new_block.filter_tagged_tasks(
play_context, task_vars)
all_blocks[host].append(final_block)
else:
all_blocks[host].append(noop_block)
for host in hosts_left:
iterator.add_tasks(host, all_blocks[host])
self._display.debug("results queue empty")
def run(self, iterator, play_context):
'''
The "free" strategy is a bit more complex, in that it allows tasks to
be sent to hosts as quickly as they can be processed. This means that
some hosts may finish very quickly if run tasks result in little or no
work being done versus other systems.
The algorithm used here also tries to be more "fair" when iterating
through hosts by remembering the last host in the list to be given a task
and starting the search from there as opposed to the top of the hosts
list again, which would end up favoring hosts near the beginning of the
list.
'''
# the last host to be given a task
last_host = 0
result = True
work_to_do = True
while work_to_do and not self._tqm._terminated:
hosts_left = [
host
for host in self._inventory.get_hosts(iterator._play.hosts)
if host.name not in self._tqm._unreachable_hosts
]
if len(hosts_left) == 0:
self._tqm.send_callback('v2_playbook_on_no_hosts_remaining')
result = False
break
work_to_do = False # assume we have no more work to do
starting_host = last_host # save current position so we know when we've looped back around and need to break
# try and find an unblocked host with a task to run
host_results = []
while True:
host = hosts_left[last_host]
display.debug("next free host: %s" % host)
host_name = host.get_name()
# peek at the next task for the host, to see if there's
# anything to do do for this host
(state, task) = iterator.get_next_task_for_host(host,
peek=True)
display.debug("free host state: %s" % state)
display.debug("free host task: %s" % task)
if host_name not in self._tqm._unreachable_hosts and task:
# set the flag so the outer loop knows we've still found
# some work which needs to be done
work_to_do = True
display.debug("this host has work to do")
# check to see if this host is blocked (still executing a previous task)
if host_name not in self._blocked_hosts or not self._blocked_hosts[
host_name]:
# pop the task, mark the host blocked, and queue it
self._blocked_hosts[host_name] = True
(state, task) = iterator.get_next_task_for_host(host)
try:
action = action_loader.get(task.action,
class_only=True)
except KeyError:
# we don't care here, because the action may simply not have a
# corresponding action plugin
action = None
display.debug("getting variables")
task_vars = self._variable_manager.get_vars(
loader=self._loader,
play=iterator._play,
host=host,
task=task)
self.add_tqm_variables(task_vars, play=iterator._play)
templar = Templar(loader=self._loader,
variables=task_vars)
display.debug("done getting variables")
try:
task.name = to_text(templar.template(
task.name, fail_on_undefined=False),
nonstring='empty')
display.debug("done templating")
except:
# just ignore any errors during task name templating,
# we don't care if it just shows the raw name
display.debug("templating failed for some reason")
pass
run_once = templar.template(
task.run_once) or action and getattr(
action, 'BYPASS_HOST_LOOP', False)
if run_once:
if action and getattr(action, 'BYPASS_HOST_LOOP',
False):
raise AnsibleError(
"The '%s' module bypasses the host loop, which is currently not supported in the free strategy "
"and would instead execute for every host in the inventory list."
% task.action,
obj=task._ds)
else:
display.warning(
"Using run_once with the free strategy is not currently supported. This task will still be "
"executed for every host in the inventory list."
)
# check to see if this task should be skipped, due to it being a member of a
# role which has already run (and whether that role allows duplicate execution)
if task._role and task._role.has_run(host):
# If there is no metadata, the default behavior is to not allow duplicates,
# if there is metadata, check to see if the allow_duplicates flag was set to true
if task._role._metadata is None or task._role._metadata and not task._role._metadata.allow_duplicates:
display.debug(
"'%s' skipped because role has already run"
% task)
del self._blocked_hosts[host_name]
continue
if task.action == 'meta':
self._execute_meta(task,
play_context,
iterator,
target_host=host)
self._blocked_hosts[host_name] = False
else:
# handle step if needed, skip meta actions as they are used internally
if not self._step or self._take_step(
task, host_name):
if task.any_errors_fatal:
display.warning(
"Using any_errors_fatal with the free strategy is not supported,"
" as tasks are executed independently on each host"
)
self._tqm.send_callback(
'v2_playbook_on_task_start',
task,
is_conditional=False)
self._queue_task(host, task, task_vars,
play_context)
del task_vars
else:
display.debug("%s is blocked, skipping for now" %
host_name)
# move on to the next host and make sure we
# haven't gone past the end of our hosts list
last_host += 1
if last_host > len(hosts_left) - 1:
last_host = 0
# if we've looped around back to the start, break out
if last_host == starting_host:
break
results = self._process_pending_results(iterator)
host_results.extend(results)
try:
included_files = IncludedFile.process_include_results(
host_results,
self._tqm,
iterator=iterator,
inventory=self._inventory,
loader=self._loader,
variable_manager=self._variable_manager)
except AnsibleError as e:
return False
if len(included_files) > 0:
all_blocks = dict((host, []) for host in hosts_left)
for included_file in included_files:
display.debug("collecting new blocks for %s" %
included_file)
try:
new_blocks = self._load_included_file(
included_file, iterator=iterator)
except AnsibleError as e:
for host in included_file._hosts:
iterator.mark_host_failed(host)
display.warning(str(e))
continue
for new_block in new_blocks:
task_vars = self._variable_manager.get_vars(
loader=self._loader,
play=iterator._play,
task=included_file._task)
final_block = new_block.filter_tagged_tasks(
play_context, task_vars)
for host in hosts_left:
if host in included_file._hosts:
all_blocks[host].append(final_block)
display.debug("done collecting new blocks for %s" %
included_file)
display.debug(
"adding all collected blocks from %d included file(s) to iterator"
% len(included_files))
for host in hosts_left:
iterator.add_tasks(host, all_blocks[host])
display.debug("done adding collected blocks to iterator")
# pause briefly so we don't spin lock
time.sleep(C.DEFAULT_INTERNAL_POLL_INTERVAL)
# collect all the final results
results = self._wait_on_pending_results(iterator)
# run the base class run() method, which executes the cleanup function
# and runs any outstanding handlers which have been triggered
return super(StrategyModule, self).run(iterator, play_context, result)
def run(self, iterator, play_context):
'''
The linear strategy is simple - get the next task and queue
it for all hosts, then wait for the queue to drain before
moving on to the next task
'''
# iteratate over each task, while there is one left to run
result = self._tqm.RUN_OK
work_to_do = True
while work_to_do and not self._tqm._terminated:
try:
display.debug("getting the remaining hosts for this loop")
hosts_left = [host for host in self._inventory.get_hosts(iterator._play.hosts) if host.name not in self._tqm._unreachable_hosts]
display.debug("done getting the remaining hosts for this loop")
# queue up this task for each host in the inventory
callback_sent = False
work_to_do = False
host_results = []
host_tasks = self._get_next_task_lockstep(hosts_left, iterator)
# skip control
skip_rest = False
choose_step = True
# flag set if task is set to any_errors_fatal
any_errors_fatal = False
results = []
for (host, task) in host_tasks:
if not task:
continue
if self._tqm._terminated:
break
run_once = False
work_to_do = True
# test to see if the task across all hosts points to an action plugin which
# sets BYPASS_HOST_LOOP to true, or if it has run_once enabled. If so, we
# will only send this task to the first host in the list.
try:
action = action_loader.get(task.action, class_only=True)
except KeyError:
# we don't care here, because the action may simply not have a
# corresponding action plugin
action = None
# check to see if this task should be skipped, due to it being a member of a
# role which has already run (and whether that role allows duplicate execution)
if task._role and task._role.has_run(host):
# If there is no metadata, the default behavior is to not allow duplicates,
# if there is metadata, check to see if the allow_duplicates flag was set to true
if task._role._metadata is None or task._role._metadata and not task._role._metadata.allow_duplicates:
display.debug("'%s' skipped because role has already run" % task)
continue
if task.action == 'meta':
# for the linear strategy, we run meta tasks just once and for
# all hosts currently being iterated over rather than one host
results.extend(self._execute_meta(task, play_context, iterator))
if task.args.get('_raw_params', None) != 'noop':
run_once = True
else:
# handle step if needed, skip meta actions as they are used internally
if self._step and choose_step:
if self._take_step(task):
choose_step = False
else:
skip_rest = True
break
display.debug("getting variables")
task_vars = self._variable_manager.get_vars(loader=self._loader, play=iterator._play, host=host, task=task)
self.add_tqm_variables(task_vars, play=iterator._play)
templar = Templar(loader=self._loader, variables=task_vars)
display.debug("done getting variables")
run_once = templar.template(task.run_once) or action and getattr(action, 'BYPASS_HOST_LOOP', False)
if (task.any_errors_fatal or run_once) and not task.ignore_errors:
any_errors_fatal = True
if not callback_sent:
display.debug("sending task start callback, copying the task so we can template it temporarily")
saved_name = task.name
display.debug("done copying, going to template now")
try:
task.name = to_text(templar.template(task.name, fail_on_undefined=False), nonstring='empty')
display.debug("done templating")
except:
# just ignore any errors during task name templating,
# we don't care if it just shows the raw name
display.debug("templating failed for some reason")
pass
display.debug("here goes the callback...")
self._tqm.send_callback('v2_playbook_on_task_start', task, is_conditional=False)
task.name = saved_name
callback_sent = True
display.debug("sending task start callback")
self._blocked_hosts[host.get_name()] = True
self._queue_task(host, task, task_vars, play_context)
del task_vars
# if we're bypassing the host loop, break out now
if run_once:
break
results += self._process_pending_results(iterator, max_passes=max(1, int(len(self._tqm._workers) * 0.1)))
# go to next host/task group
if skip_rest:
continue
display.debug("done queuing things up, now waiting for results queue to drain")
if self._pending_results > 0:
results += self._wait_on_pending_results(iterator)
host_results.extend(results)
all_role_blocks = []
for hr in results:
# handle include_role
if hr._task.action == 'include_role':
loop_var = None
if hr._task.loop:
loop_var = 'item'
if hr._task.loop_control:
loop_var = hr._task.loop_control.loop_var or 'item'
include_results = hr._result.get('results', [])
else:
include_results = [ hr._result ]
for include_result in include_results:
if 'skipped' in include_result and include_result['skipped'] or 'failed' in include_result and include_result['failed']:
continue
display.debug("generating all_blocks data for role")
new_ir = hr._task.copy()
new_ir.vars.update(include_result.get('include_variables', dict()))
if loop_var and loop_var in include_result:
new_ir.vars[loop_var] = include_result[loop_var]
all_role_blocks.extend(new_ir.get_block_list(play=iterator._play, variable_manager=self._variable_manager, loader=self._loader))
if len(all_role_blocks) > 0:
for host in hosts_left:
iterator.add_tasks(host, all_role_blocks)
try:
included_files = IncludedFile.process_include_results(
host_results,
self._tqm,
iterator=iterator,
inventory=self._inventory,
loader=self._loader,
variable_manager=self._variable_manager
)
except AnsibleError as e:
# this is a fatal error, so we abort here regardless of block state
return self._tqm.RUN_ERROR
include_failure = False
if len(included_files) > 0:
display.debug("we have included files to process")
noop_task = Task()
noop_task.action = 'meta'
noop_task.args['_raw_params'] = 'noop'
noop_task.set_loader(iterator._play._loader)
display.debug("generating all_blocks data")
all_blocks = dict((host, []) for host in hosts_left)
display.debug("done generating all_blocks data")
for included_file in included_files:
display.debug("processing included file: %s" % included_file._filename)
# included hosts get the task list while those excluded get an equal-length
# list of noop tasks, to make sure that they continue running in lock-step
try:
new_blocks = self._load_included_file(included_file, iterator=iterator)
display.debug("iterating over new_blocks loaded from include file")
for new_block in new_blocks:
task_vars = self._variable_manager.get_vars(
loader=self._loader,
play=iterator._play,
task=included_file._task,
)
display.debug("filtering new block on tags")
final_block = new_block.filter_tagged_tasks(play_context, task_vars)
display.debug("done filtering new block on tags")
noop_block = Block(parent_block=task._parent)
noop_block.block = [noop_task for t in new_block.block]
noop_block.always = [noop_task for t in new_block.always]
noop_block.rescue = [noop_task for t in new_block.rescue]
for host in hosts_left:
if host in included_file._hosts:
all_blocks[host].append(final_block)
else:
all_blocks[host].append(noop_block)
display.debug("done iterating over new_blocks loaded from include file")
except AnsibleError as e:
for host in included_file._hosts:
self._tqm._failed_hosts[host.name] = True
iterator.mark_host_failed(host)
display.error(to_text(e), wrap_text=False)
include_failure = True
continue
# finally go through all of the hosts and append the
# accumulated blocks to their list of tasks
display.debug("extending task lists for all hosts with included blocks")
for host in hosts_left:
iterator.add_tasks(host, all_blocks[host])
display.debug("done extending task lists")
display.debug("done processing included files")
display.debug("results queue empty")
display.debug("checking for any_errors_fatal")
failed_hosts = []
unreachable_hosts = []
for res in results:
if res.is_failed():
failed_hosts.append(res._host.name)
elif res.is_unreachable():
unreachable_hosts.append(res._host.name)
# if any_errors_fatal and we had an error, mark all hosts as failed
if any_errors_fatal and (len(failed_hosts) > 0 or len(unreachable_hosts) > 0):
for host in hosts_left:
(s, _) = iterator.get_next_task_for_host(host, peek=True)
if s.run_state != iterator.ITERATING_RESCUE or \
s.run_state == iterator.ITERATING_RESCUE and s.fail_state & iterator.FAILED_RESCUE != 0:
self._tqm._failed_hosts[host.name] = True
result |= self._tqm.RUN_FAILED_BREAK_PLAY
display.debug("done checking for any_errors_fatal")
display.debug("checking for max_fail_percentage")
if iterator._play.max_fail_percentage is not None and len(results) > 0:
percentage = iterator._play.max_fail_percentage / 100.0
if (len(self._tqm._failed_hosts) / len(results)) > percentage:
for host in hosts_left:
# don't double-mark hosts, or the iterator will potentially
# fail them out of the rescue/always states
if host.name not in failed_hosts:
self._tqm._failed_hosts[host.name] = True
iterator.mark_host_failed(host)
self._tqm.send_callback('v2_playbook_on_no_hosts_remaining')
result |= self._tqm.RUN_FAILED_BREAK_PLAY
display.debug("done checking for max_fail_percentage")
display.debug("checking to see if all hosts have failed and the running result is not ok")
if result != self._tqm.RUN_OK and len(self._tqm._failed_hosts) >= len(hosts_left):
display.debug("^ not ok, so returning result now")
self._tqm.send_callback('v2_playbook_on_no_hosts_remaining')
return result
display.debug("done checking to see if all hosts have failed")
except (IOError, EOFError) as e:
display.debug("got IOError/EOFError in task loop: %s" % e)
# most likely an abort, return failed
return self._tqm.RUN_UNKNOWN_ERROR
# run the base class run() method, which executes the cleanup function
# and runs any outstanding handlers which have been triggered
return super(StrategyModule, self).run(iterator, play_context, result)
def run(self, iterator, connection_info):
'''
The linear strategy is simple - get the next task and queue
it for all hosts, then wait for the queue to drain before
moving on to the next task
'''
result = True
# iteratate over each task, while there is one left to run
work_to_do = True
while work_to_do and not self._tqm._terminated:
try:
debug("getting the remaining hosts for this loop")
self._tqm._failed_hosts = iterator.get_failed_hosts()
hosts_left = self.get_hosts_remaining(iterator._play)
debug("done getting the remaining hosts for this loop")
if len(hosts_left) == 0:
debug("out of hosts to run on")
self._tqm.send_callback(
'v2_playbook_on_no_hosts_remaining')
result = False
break
# queue up this task for each host in the inventory
callback_sent = False
work_to_do = False
host_results = []
host_tasks = self._get_next_task_lockstep(hosts_left, iterator)
for (host, task) in host_tasks:
if not task:
continue
run_once = False
work_to_do = True
# test to see if the task across all hosts points to an action plugin which
# sets BYPASS_HOST_LOOP to true, or if it has run_once enabled. If so, we
# will only send this task to the first host in the list.
try:
action = action_loader.get(task.action,
class_only=True)
if task.run_once or getattr(action, 'BYPASS_HOST_LOOP',
False):
run_once = True
except KeyError:
# we don't care here, because the action may simply not have a
# corresponding action plugin
pass
debug("getting variables")
task_vars = self._variable_manager.get_vars(
loader=self._loader,
play=iterator._play,
host=host,
task=task)
debug("done getting variables")
# check to see if this task should be skipped, due to it being a member of a
# role which has already run (and whether that role allows duplicate execution)
if task._role and task._role.has_run():
# If there is no metadata, the default behavior is to not allow duplicates,
# if there is metadata, check to see if the allow_duplicates flag was set to true
if task._role._metadata is None or task._role._metadata and not task._role._metadata.allow_duplicates:
debug("'%s' skipped because role has already run" %
task)
continue
if task.action == 'meta':
# meta tasks store their args in the _raw_params field of args,
# since they do not use k=v pairs, so get that
meta_action = task.args.get('_raw_params')
if meta_action == 'noop':
# FIXME: issue a callback for the noop here?
continue
elif meta_action == 'flush_handlers':
self.run_handlers(iterator, connection_info)
else:
raise AnsibleError(
"invalid meta action requested: %s" %
meta_action,
obj=task._ds)
else:
if not callback_sent:
self._tqm.send_callback(
'v2_playbook_on_task_start',
task,
is_conditional=False)
callback_sent = True
self._blocked_hosts[host.get_name()] = True
self._queue_task(host, task, task_vars,
connection_info)
results = self._process_pending_results(iterator)
host_results.extend(results)
# if we're bypassing the host loop, break out now
if run_once:
break
debug(
"done queuing things up, now waiting for results queue to drain"
)
results = self._wait_on_pending_results(iterator)
host_results.extend(results)
# FIXME: this needs to be somewhere else
class IncludedFile:
def __init__(self, filename, args, task):
self._filename = filename
self._args = args
self._task = task
self._hosts = []
def add_host(self, host):
if host not in self._hosts:
self._hosts.append(host)
def __eq__(self, other):
return other._filename == self._filename and other._args == self._args
def __repr__(self):
return "%s (%s): %s" % (self._filename, self._args,
self._hosts)
# FIXME: this should also be moved to the base class in a method
included_files = []
for res in host_results:
if res._task.action == 'include':
if res._task.loop:
include_results = res._result['results']
else:
include_results = [res._result]
for include_result in include_results:
# if the task result was skipped or failed, continue
if 'skipped' in include_result and include_result[
'skipped'] or 'failed' in include_result:
continue
original_task = iterator.get_original_task(
res._host, res._task)
if original_task and original_task._role:
include_file = self._loader.path_dwim_relative(
original_task._role._role_path, 'tasks',
include_result['include'])
else:
include_file = self._loader.path_dwim(
res._task.args.get('_raw_params'))
include_variables = include_result.get(
'include_variables', dict())
if 'item' in include_result:
include_variables['item'] = include_result[
'item']
inc_file = IncludedFile(include_file,
include_variables,
original_task)
try:
pos = included_files.index(inc_file)
inc_file = included_files[pos]
except ValueError:
included_files.append(inc_file)
inc_file.add_host(res._host)
# FIXME: should this be moved into the iterator class? Main downside would be
# that accessing the TQM's callback member would be more difficult, if
# we do want to send callbacks from here
if len(included_files) > 0:
noop_task = Task()
noop_task.action = 'meta'
noop_task.args['_raw_params'] = 'noop'
noop_task.set_loader(iterator._play._loader)
all_blocks = dict((host, []) for host in hosts_left)
for included_file in included_files:
# included hosts get the task list while those excluded get an equal-length
# list of noop tasks, to make sure that they continue running in lock-step
try:
new_blocks = self._load_included_file(
included_file)
except AnsibleError, e:
for host in included_file._hosts:
iterator.mark_host_failed(host)
# FIXME: callback here?
print(e)
for new_block in new_blocks:
noop_block = Block(parent_block=task._block)
noop_block.block = [
noop_task for t in new_block.block
]
noop_block.always = [
noop_task for t in new_block.always
]
noop_block.rescue = [
noop_task for t in new_block.rescue
]
for host in hosts_left:
if host in included_file._hosts:
task_vars = self._variable_manager.get_vars(
loader=self._loader,
play=iterator._play,
host=host,
task=included_file._task)
final_block = new_block.filter_tagged_tasks(
connection_info, task_vars)
all_blocks[host].append(final_block)
else:
all_blocks[host].append(noop_block)
for host in hosts_left:
iterator.add_tasks(host, all_blocks[host])
debug("results queue empty")
except (IOError, EOFError), e:
debug("got IOError/EOFError in task loop: %s" % e)
# most likely an abort, return failed
return 1
def run(self, iterator, play_context):
'''
The linear strategy is simple - get the next task and queue
it for all hosts, then wait for the queue to drain before
moving on to the next task
'''
# iteratate over each task, while there is one left to run
result = True
work_to_do = True
while work_to_do and not self._tqm._terminated:
try:
display.debug("getting the remaining hosts for this loop")
hosts_left = [
host
for host in self._inventory.get_hosts(iterator._play.hosts)
if host.name not in self._tqm._unreachable_hosts
]
display.debug("done getting the remaining hosts for this loop")
# queue up this task for each host in the inventory
callback_sent = False
work_to_do = False
host_results = []
host_tasks = self._get_next_task_lockstep(hosts_left, iterator)
# skip control
skip_rest = False
choose_step = True
# flag set if task is set to any_errors_fatal
any_errors_fatal = False
results = []
for (host, task) in host_tasks:
if not task:
continue
if self._tqm._terminated:
break
run_once = False
work_to_do = True
# test to see if the task across all hosts points to an action plugin which
# sets BYPASS_HOST_LOOP to true, or if it has run_once enabled. If so, we
# will only send this task to the first host in the list.
try:
action = action_loader.get(task.action,
class_only=True)
except KeyError:
# we don't care here, because the action may simply not have a
# corresponding action plugin
action = None
# check to see if this task should be skipped, due to it being a member of a
# role which has already run (and whether that role allows duplicate execution)
if task._role and task._role.has_run(host):
# If there is no metadata, the default behavior is to not allow duplicates,
# if there is metadata, check to see if the allow_duplicates flag was set to true
if task._role._metadata is None or task._role._metadata and not task._role._metadata.allow_duplicates:
display.debug(
"'%s' skipped because role has already run" %
task)
continue
if task.action == 'meta':
self._execute_meta(task, play_context, iterator)
else:
# handle step if needed, skip meta actions as they are used internally
if self._step and choose_step:
if self._take_step(task):
choose_step = False
else:
skip_rest = True
break
display.debug("getting variables")
task_vars = self._variable_manager.get_vars(
loader=self._loader,
play=iterator._play,
host=host,
task=task)
self.add_tqm_variables(task_vars, play=iterator._play)
templar = Templar(loader=self._loader,
variables=task_vars)
display.debug("done getting variables")
run_once = templar.template(
task.run_once) or action and getattr(
action, 'BYPASS_HOST_LOOP', False)
if (task.any_errors_fatal
or run_once) and not task.ignore_errors:
any_errors_fatal = True
if not callback_sent:
display.debug(
"sending task start callback, copying the task so we can template it temporarily"
)
saved_name = task.name
display.debug(
"done copying, going to template now")
try:
task.name = to_unicode(templar.template(
task.name, fail_on_undefined=False),
nonstring='empty')
display.debug("done templating")
except:
# just ignore any errors during task name templating,
# we don't care if it just shows the raw name
display.debug(
"templating failed for some reason")
pass
display.debug("here goes the callback...")
self._tqm.send_callback(
'v2_playbook_on_task_start',
task,
is_conditional=False)
task.name = saved_name
callback_sent = True
display.debug("sending task start callback")
self._blocked_hosts[host.get_name()] = True
self._queue_task(host, task, task_vars, play_context)
# if we're bypassing the host loop, break out now
if run_once:
break
results += self._process_pending_results(iterator,
one_pass=True)
# go to next host/task group
if skip_rest:
continue
display.debug(
"done queuing things up, now waiting for results queue to drain"
)
results += self._wait_on_pending_results(iterator)
host_results.extend(results)
if not work_to_do and len(iterator.get_failed_hosts()) > 0:
display.debug("out of hosts to run on")
self._tqm.send_callback(
'v2_playbook_on_no_hosts_remaining')
result = self._tqm.RUN_ERROR
break
try:
included_files = IncludedFile.process_include_results(
host_results,
self._tqm,
iterator=iterator,
inventory=self._inventory,
loader=self._loader,
variable_manager=self._variable_manager)
except AnsibleError as e:
return self._tqm.RUN_ERROR
include_failure = False
if len(included_files) > 0:
display.debug("we have included files to process")
noop_task = Task()
noop_task.action = 'meta'
noop_task.args['_raw_params'] = 'noop'
noop_task.set_loader(iterator._play._loader)
display.debug("generating all_blocks data")
all_blocks = dict((host, []) for host in hosts_left)
display.debug("done generating all_blocks data")
for included_file in included_files:
display.debug("processing included file: %s" %
included_file._filename)
# included hosts get the task list while those excluded get an equal-length
# list of noop tasks, to make sure that they continue running in lock-step
try:
new_blocks = self._load_included_file(
included_file, iterator=iterator)
display.debug(
"iterating over new_blocks loaded from include file"
)
for new_block in new_blocks:
task_vars = self._variable_manager.get_vars(
loader=self._loader,
play=iterator._play,
task=included_file._task,
)
display.debug("filtering new block on tags")
final_block = new_block.filter_tagged_tasks(
play_context, task_vars)
display.debug(
"done filtering new block on tags")
noop_block = Block(parent_block=task._block)
noop_block.block = [
noop_task for t in new_block.block
]
noop_block.always = [
noop_task for t in new_block.always
]
noop_block.rescue = [
noop_task for t in new_block.rescue
]
for host in hosts_left:
if host in included_file._hosts:
all_blocks[host].append(final_block)
else:
all_blocks[host].append(noop_block)
display.debug(
"done iterating over new_blocks loaded from include file"
)
except AnsibleError as e:
for host in included_file._hosts:
self._tqm._failed_hosts[host.name] = True
iterator.mark_host_failed(host)
display.error(to_unicode(e), wrap_text=False)
include_failure = True
continue
# finally go through all of the hosts and append the
# accumulated blocks to their list of tasks
display.debug(
"extending task lists for all hosts with included blocks"
)
for host in hosts_left:
iterator.add_tasks(host, all_blocks[host])
display.debug("done extending task lists")
display.debug("done processing included files")
display.debug("results queue empty")
display.debug("checking for any_errors_fatal")
failed_hosts = []
unreachable_hosts = []
for res in results:
if res.is_failed():
failed_hosts.append(res._host.name)
elif res.is_unreachable():
unreachable_hosts.append(res._host.name)
# if any_errors_fatal and we had an error, mark all hosts as failed
if any_errors_fatal and (len(failed_hosts) > 0
or len(unreachable_hosts) > 0):
for host in hosts_left:
# don't double-mark hosts, or the iterator will potentially
# fail them out of the rescue/always states
if host.name not in failed_hosts:
self._tqm._failed_hosts[host.name] = True
iterator.mark_host_failed(host)
self._tqm.send_callback(
'v2_playbook_on_no_hosts_remaining')
return self._tqm.RUN_FAILED_BREAK_PLAY
display.debug("done checking for any_errors_fatal")
display.debug("checking for max_fail_percentage")
if iterator._play.max_fail_percentage is not None and len(
results) > 0:
percentage = iterator._play.max_fail_percentage / 100.0
if (len(self._tqm._failed_hosts) /
len(results)) > percentage:
for host in hosts_left:
# don't double-mark hosts, or the iterator will potentially
# fail them out of the rescue/always states
if host.name not in failed_hosts:
self._tqm._failed_hosts[host.name] = True
iterator.mark_host_failed(host)
self._tqm.send_callback(
'v2_playbook_on_no_hosts_remaining')
return self._tqm.RUN_FAILED_BREAK_PLAY
display.debug("done checking for max_fail_percentage")
except (IOError, EOFError) as e:
display.debug("got IOError/EOFError in task loop: %s" % e)
# most likely an abort, return failed
return self._tqm.RUN_UNKNOWN_ERROR
# run the base class run() method, which executes the cleanup function
# and runs any outstanding handlers which have been triggered
return super(StrategyModule, self).run(iterator, play_context, result)
Returns the correct action plugin to handle the requestion task action
'''
if self._task.action in action_loader:
if self._task.async != 0:
raise AnsibleError("async mode is not supported with the %s module" % module_name)
handler_name = self._task.action
elif self._task.async == 0:
handler_name = 'normal'
else:
handler_name = 'async'
handler = action_loader.get(
handler_name,
task=self._task,
connection=connection,
connection_info=self._connection_info,
loader=self._loader,
shared_loader_obj=self._shared_loader_obj,
)
if not handler:
raise AnsibleError("the handler '%s' was not found" % handler_name)
return handler
def _compute_delegate(self, variables):
# get the vars for the delegate by its name
try:
this_info = variables['hostvars'][self._task.delegate_to]
except:
Returns the correct action plugin to handle the requestion task action
'''
if self._task.action in action_loader:
if self._task.async != 0:
raise AnsibleError("async mode is not supported with the %s module" % module_name)
handler_name = self._task.action
elif self._task.async == 0:
handler_name = 'normal'
else:
handler_name = 'async'
handler = action_loader.get(
handler_name,
task=self._task,
connection=connection,
connection_info=self._connection_info,
loader=self._loader,
module_loader=self._module_loader,
)
if not handler:
raise AnsibleError("the handler '%s' was not found" % handler_name)
return handler
def _compute_delegate(self, variables):
# get the vars for the delegate by its name
try:
this_info = variables['hostvars'][self._task.delegate_to]
except:
if self._task.action in action_loader:
if self._task. async != 0:
raise AnsibleError(
"async mode is not supported with the %s module" %
module_name)
handler_name = self._task.action
elif self._task. async == 0:
handler_name = 'normal'
else:
handler_name = 'async'
handler = action_loader.get(
handler_name,
task=self._task,
connection=connection,
connection_info=self._connection_info,
loader=self._loader,
module_loader=self._module_loader,
)
if not handler:
raise AnsibleError("the handler '%s' was not found" % handler_name)
return handler
def _compute_delegate(self, variables):
# get the vars for the delegate by its name
try:
this_info = variables['hostvars'][self._task.delegate_to]
except:
def run(self, iterator, connection_info):
'''
The linear strategy is simple - get the next task and queue
it for all hosts, then wait for the queue to drain before
moving on to the next task
'''
# iteratate over each task, while there is one left to run
result = True
work_to_do = True
while work_to_do and not self._tqm._terminated:
try:
debug("getting the remaining hosts for this loop")
self._tqm._failed_hosts = iterator.get_failed_hosts()
hosts_left = self.get_hosts_remaining(iterator._play)
debug("done getting the remaining hosts for this loop")
if len(hosts_left) == 0:
debug("out of hosts to run on")
self._tqm.send_callback(
'v2_playbook_on_no_hosts_remaining')
result = False
break
# queue up this task for each host in the inventory
callback_sent = False
work_to_do = False
host_results = []
host_tasks = self._get_next_task_lockstep(hosts_left, iterator)
for (host, task) in host_tasks:
if not task:
continue
run_once = False
work_to_do = True
# test to see if the task across all hosts points to an action plugin which
# sets BYPASS_HOST_LOOP to true, or if it has run_once enabled. If so, we
# will only send this task to the first host in the list.
try:
action = action_loader.get(task.action,
class_only=True)
if task.run_once or getattr(action, 'BYPASS_HOST_LOOP',
False):
run_once = True
except KeyError:
# we don't care here, because the action may simply not have a
# corresponding action plugin
pass
# check to see if this task should be skipped, due to it being a member of a
# role which has already run (and whether that role allows duplicate execution)
if task._role and task._role.has_run():
# If there is no metadata, the default behavior is to not allow duplicates,
# if there is metadata, check to see if the allow_duplicates flag was set to true
if task._role._metadata is None or task._role._metadata and not task._role._metadata.allow_duplicates:
debug("'%s' skipped because role has already run" %
task)
continue
if task.action == 'meta':
# meta tasks store their args in the _raw_params field of args,
# since they do not use k=v pairs, so get that
meta_action = task.args.get('_raw_params')
if meta_action == 'noop':
# FIXME: issue a callback for the noop here?
continue
elif meta_action == 'flush_handlers':
self.run_handlers(iterator, connection_info)
else:
raise AnsibleError(
"invalid meta action requested: %s" %
meta_action,
obj=task._ds)
else:
debug("getting variables")
task_vars = self._variable_manager.get_vars(
loader=self._loader,
play=iterator._play,
host=host,
task=task)
task_vars = self.add_tqm_variables(task_vars,
play=iterator._play)
templar = Templar(loader=self._loader,
variables=task_vars)
debug("done getting variables")
if not callback_sent:
temp_task = task.copy()
temp_task.name = templar.template(
temp_task.get_name(), fail_on_undefined=False)
self._tqm.send_callback(
'v2_playbook_on_task_start',
temp_task,
is_conditional=False)
callback_sent = True
self._blocked_hosts[host.get_name()] = True
self._queue_task(host, task, task_vars,
connection_info)
results = self._process_pending_results(iterator)
host_results.extend(results)
# if we're bypassing the host loop, break out now
if run_once:
break
debug(
"done queuing things up, now waiting for results queue to drain"
)
results = self._wait_on_pending_results(iterator)
host_results.extend(results)
try:
included_files = IncludedFile.process_include_results(
host_results,
self._tqm,
iterator=iterator,
loader=self._loader)
except AnsibleError, e:
return False
if len(included_files) > 0:
noop_task = Task()
noop_task.action = 'meta'
noop_task.args['_raw_params'] = 'noop'
noop_task.set_loader(iterator._play._loader)
all_blocks = dict((host, []) for host in hosts_left)
for included_file in included_files:
# included hosts get the task list while those excluded get an equal-length
# list of noop tasks, to make sure that they continue running in lock-step
try:
new_blocks = self._load_included_file(
included_file, iterator=iterator)
except AnsibleError, e:
for host in included_file._hosts:
iterator.mark_host_failed(host)
# FIXME: callback here?
print(e)
continue
for new_block in new_blocks:
noop_block = Block(parent_block=task._block)
noop_block.block = [
noop_task for t in new_block.block
]
noop_block.always = [
noop_task for t in new_block.always
]
noop_block.rescue = [
noop_task for t in new_block.rescue
]
for host in hosts_left:
if host in included_file._hosts:
task_vars = self._variable_manager.get_vars(
loader=self._loader,
play=iterator._play,
host=host,
task=included_file._task)
final_block = new_block.filter_tagged_tasks(
connection_info, task_vars)
all_blocks[host].append(final_block)
else:
all_blocks[host].append(noop_block)
for host in hosts_left:
iterator.add_tasks(host, all_blocks[host])
debug("results queue empty")
def _do_handler_run(self, handler, handler_name, iterator, play_context, notified_hosts=None):
# FIXME: need to use iterator.get_failed_hosts() instead?
#if not len(self.get_hosts_remaining(iterator._play)):
# self._tqm.send_callback('v2_playbook_on_no_hosts_remaining')
# result = False
# break
saved_name = handler.name
handler.name = handler_name
self._tqm.send_callback('v2_playbook_on_handler_task_start', handler)
handler.name = saved_name
if notified_hosts is None:
notified_hosts = self._notified_handlers[handler]
run_once = False
try:
action = action_loader.get(handler.action, class_only=True)
if handler.run_once or getattr(action, 'BYPASS_HOST_LOOP', False):
run_once = True
except KeyError:
# we don't care here, because the action may simply not have a
# corresponding action plugin
pass
host_results = []
for host in notified_hosts:
if not handler.has_triggered(host) and (host.name not in self._tqm._failed_hosts or play_context.force_handlers):
task_vars = self._variable_manager.get_vars(loader=self._loader, play=iterator._play, host=host, task=handler)
self.add_tqm_variables(task_vars, play=iterator._play)
self._queue_task(host, handler, task_vars, play_context)
if run_once:
break
# collect the results from the handler run
host_results = self._wait_on_pending_results(iterator)
try:
included_files = IncludedFile.process_include_results(
host_results,
self._tqm,
iterator=iterator,
inventory=self._inventory,
loader=self._loader,
variable_manager=self._variable_manager
)
except AnsibleError as e:
return False
result = True
if len(included_files) > 0:
for included_file in included_files:
try:
new_blocks = self._load_included_file(included_file, iterator=iterator, is_handler=True)
# for every task in each block brought in by the include, add the list
# of hosts which included the file to the notified_handlers dict
for block in new_blocks:
iterator._play.handlers.append(block)
for task in block.block:
result = self._do_handler_run(
handler=task,
handler_name=None,
iterator=iterator,
play_context=play_context,
notified_hosts=included_file._hosts[:],
)
if not result:
break
except AnsibleError as e:
for host in included_file._hosts:
iterator.mark_host_failed(host)
self._tqm._failed_hosts[host.name] = True
display.warning(str(e))
continue
# wipe the notification list
self._notified_handlers[handler] = []
display.debug("done running handlers, result is: %s" % result)
return result
def run(self, iterator, play_context):
'''
The linear strategy is simple - get the next task and queue
it for all hosts, then wait for the queue to drain before
moving on to the next task
'''
# iteratate over each task, while there is one left to run
result = True
work_to_do = True
while work_to_do and not self._tqm._terminated:
try:
self._display.debug("getting the remaining hosts for this loop")
hosts_left = [host for host in self._inventory.get_hosts(iterator._play.hosts) if host.name not in self._tqm._unreachable_hosts]
self._display.debug("done getting the remaining hosts for this loop")
# queue up this task for each host in the inventory
callback_sent = False
work_to_do = False
host_results = []
host_tasks = self._get_next_task_lockstep(hosts_left, iterator)
# skip control
skip_rest = False
choose_step = True
for (host, task) in host_tasks:
if not task:
continue
run_once = False
work_to_do = True
# test to see if the task across all hosts points to an action plugin which
# sets BYPASS_HOST_LOOP to true, or if it has run_once enabled. If so, we
# will only send this task to the first host in the list.
try:
action = action_loader.get(task.action, class_only=True)
if task.run_once or getattr(action, 'BYPASS_HOST_LOOP', False):
run_once = True
except KeyError:
# we don't care here, because the action may simply not have a
# corresponding action plugin
pass
# check to see if this task should be skipped, due to it being a member of a
# role which has already run (and whether that role allows duplicate execution)
if task._role and task._role.has_run(host):
# If there is no metadata, the default behavior is to not allow duplicates,
# if there is metadata, check to see if the allow_duplicates flag was set to true
if task._role._metadata is None or task._role._metadata and not task._role._metadata.allow_duplicates:
self._display.debug("'%s' skipped because role has already run" % task)
continue
if task.action == 'meta':
self._execute_meta(task, play_context, iterator)
else:
# handle step if needed, skip meta actions as they are used internally
if self._step and choose_step:
if self._take_step(task):
choose_step = False
else:
skip_rest = True
break
self._display.debug("getting variables")
task_vars = self._variable_manager.get_vars(loader=self._loader, play=iterator._play, host=host, task=task)
task_vars = self.add_tqm_variables(task_vars, play=iterator._play)
templar = Templar(loader=self._loader, variables=task_vars)
self._display.debug("done getting variables")
if not callback_sent:
display.debug("sending task start callback, copying the task so we can template it temporarily")
saved_name = task.name
display.debug("done copying, going to template now")
try:
task.name = text_type(templar.template(task.name, fail_on_undefined=False))
display.debug("done templating")
except:
# just ignore any errors during task name templating,
# we don't care if it just shows the raw name
display.debug("templating failed for some reason")
pass
display.debug("here goes the callback...")
self._tqm.send_callback('v2_playbook_on_task_start', task, is_conditional=False)
task.name = saved_name
callback_sent = True
display.debug("sending task start callback")
self._blocked_hosts[host.get_name()] = True
self._queue_task(host, task, task_vars, play_context)
results = self._process_pending_results(iterator)
host_results.extend(results)
# if we're bypassing the host loop, break out now
if run_once:
break
# go to next host/task group
if skip_rest:
continue
self._display.debug("done queuing things up, now waiting for results queue to drain")
results = self._wait_on_pending_results(iterator)
host_results.extend(results)
if not work_to_do and len(iterator.get_failed_hosts()) > 0:
self._display.debug("out of hosts to run on")
self._tqm.send_callback('v2_playbook_on_no_hosts_remaining')
result = False
break
try:
included_files = IncludedFile.process_include_results(host_results, self._tqm, iterator=iterator, loader=self._loader, variable_manager=self._variable_manager)
except AnsibleError as e:
return False
if len(included_files) > 0:
noop_task = Task()
noop_task.action = 'meta'
noop_task.args['_raw_params'] = 'noop'
noop_task.set_loader(iterator._play._loader)
all_blocks = dict((host, []) for host in hosts_left)
for included_file in included_files:
# included hosts get the task list while those excluded get an equal-length
# list of noop tasks, to make sure that they continue running in lock-step
try:
new_blocks = self._load_included_file(included_file, iterator=iterator)
except AnsibleError as e:
for host in included_file._hosts:
iterator.mark_host_failed(host)
self._display.warning(str(e))
continue
for new_block in new_blocks:
noop_block = Block(parent_block=task._block)
noop_block.block = [noop_task for t in new_block.block]
noop_block.always = [noop_task for t in new_block.always]
noop_block.rescue = [noop_task for t in new_block.rescue]
for host in hosts_left:
if host in included_file._hosts:
task_vars = self._variable_manager.get_vars(loader=self._loader, play=iterator._play, host=host, task=included_file._task)
final_block = new_block.filter_tagged_tasks(play_context, task_vars)
all_blocks[host].append(final_block)
else:
all_blocks[host].append(noop_block)
for host in hosts_left:
iterator.add_tasks(host, all_blocks[host])
self._display.debug("results queue empty")
except (IOError, EOFError) as e:
self._display.debug("got IOError/EOFError in task loop: %s" % e)
# most likely an abort, return failed
return False
# run the base class run() method, which executes the cleanup function
# and runs any outstanding handlers which have been triggered
return super(StrategyModule, self).run(iterator, play_context, result)
'''
if self._task.action in action_loader:
if self._task.async != 0:
raise AnsibleError("async mode is not supported with the %s module" % module_name)
handler_name = self._task.action
elif self._task.async == 0:
handler_name = 'normal'
else:
handler_name = 'async'
handler = action_loader.get(
handler_name,
task=self._task,
connection=connection,
play_context=self._play_context,
loader=self._loader,
templar=templar,
shared_loader_obj=self._shared_loader_obj,
)
if not handler:
raise AnsibleError("the handler '%s' was not found" % handler_name)
return handler
def _compute_delegate(self, variables):
# get the vars for the delegate by its name
try:
self._display.debug("Delegating to %s" % self._task.delegate_to)
def run(self, iterator, connection_info):
'''
The linear strategy is simple - get the next task and queue
it for all hosts, then wait for the queue to drain before
moving on to the next task
'''
result = True
# iteratate over each task, while there is one left to run
work_to_do = True
while work_to_do and not self._tqm._terminated:
try:
debug("getting the remaining hosts for this loop")
self._tqm._failed_hosts = iterator.get_failed_hosts()
hosts_left = self.get_hosts_remaining(iterator._play)
debug("done getting the remaining hosts for this loop")
if len(hosts_left) == 0:
debug("out of hosts to run on")
self._callback.playbook_on_no_hosts_remaining()
result = False
break
# queue up this task for each host in the inventory
callback_sent = False
work_to_do = False
host_results = []
host_tasks = self._get_next_task_lockstep(hosts_left, iterator)
for (host, task) in host_tasks:
if not task:
continue
run_once = False
work_to_do = True
# test to see if the task across all hosts points to an action plugin which
# sets BYPASS_HOST_LOOP to true, or if it has run_once enabled. If so, we
# will only send this task to the first host in the list.
try:
action = action_loader.get(task.action, class_only=True)
if task.run_once or getattr(action, 'BYPASS_HOST_LOOP', False):
run_once = True
except KeyError:
# we don't care here, because the action may simply not have a
# corresponding action plugin
pass
debug("getting variables")
task_vars = self._variable_manager.get_vars(loader=self._loader, play=iterator._play, host=host, task=task)
debug("done getting variables")
# check to see if this task should be skipped, due to it being a member of a
# role which has already run (and whether that role allows duplicate execution)
if task._role and task._role.has_run():
# If there is no metadata, the default behavior is to not allow duplicates,
# if there is metadata, check to see if the allow_duplicates flag was set to true
if task._role._metadata is None or task._role._metadata and not task._role._metadata.allow_duplicates:
debug("'%s' skipped because role has already run" % task)
continue
if not task.evaluate_tags(connection_info.only_tags, connection_info.skip_tags, task_vars) and task.action != 'setup':
debug("'%s' failed tag evaluation" % task)
continue
if task.action == 'meta':
# meta tasks store their args in the _raw_params field of args,
# since they do not use k=v pairs, so get that
meta_action = task.args.get('_raw_params')
if meta_action == 'noop':
# FIXME: issue a callback for the noop here?
print("%s => NOOP" % host)
continue
elif meta_action == 'flush_handlers':
self.run_handlers(iterator, connection_info)
else:
raise AnsibleError("invalid meta action requested: %s" % meta_action, obj=task._ds)
else:
if not callback_sent:
self._callback.playbook_on_task_start(task.get_name(), False)
callback_sent = True
self._blocked_hosts[host.get_name()] = True
self._queue_task(host, task, task_vars, connection_info)
results = self._process_pending_results(iterator)
host_results.extend(results)
# if we're bypassing the host loop, break out now
if run_once:
break
debug("done queuing things up, now waiting for results queue to drain")
results = self._wait_on_pending_results(iterator)
host_results.extend(results)
# FIXME: this needs to be somewhere else
class IncludedFile:
def __init__(self, filename, args, task):
self._filename = filename
self._args = args
self._task = task
self._hosts = []
def add_host(self, host):
if host not in self._hosts:
self._hosts.append(host)
def __eq__(self, other):
return other._filename == self._filename and other._args == self._args
def __repr__(self):
return "%s (%s): %s" % (self._filename, self._args, self._hosts)
included_files = []
for res in host_results:
if res._task.action == 'include':
if res._task.loop:
include_results = res._result['results']
else:
include_results = [ res._result ]
for include_result in include_results:
original_task = iterator.get_original_task(res._host, res._task)
if original_task and original_task._role:
include_file = self._loader.path_dwim_relative(original_task._role._role_path, 'tasks', include_file)
else:
include_file = self._loader.path_dwim(res._task.args.get('_raw_params'))
include_variables = include_result.get('include_variables', dict())
if 'item' in include_result:
include_variables['item'] = include_result['item']
inc_file = IncludedFile(include_file, include_variables, original_task)
try:
pos = included_files.index(inc_file)
inc_file = included_files[pos]
except ValueError:
included_files.append(inc_file)
inc_file.add_host(res._host)
if len(included_files) > 0:
noop_task = Task()
noop_task.action = 'meta'
noop_task.args['_raw_params'] = 'noop'
noop_task.set_loader(iterator._play._loader)
all_tasks = dict((host, []) for host in hosts_left)
for included_file in included_files:
# included hosts get the task list while those excluded get an equal-length
# list of noop tasks, to make sure that they continue running in lock-step
new_tasks = self._load_included_file(included_file)
noop_tasks = [noop_task for t in new_tasks]
for host in hosts_left:
if host in included_file._hosts:
all_tasks[host].extend(new_tasks)
else:
all_tasks[host].extend(noop_tasks)
for host in hosts_left:
iterator.add_tasks(host, all_tasks[host])
debug("results queue empty")
except (IOError, EOFError), e:
debug("got IOError/EOFError in task loop: %s" % e)
# most likely an abort, return failed
return 1
'''
if self._task.action in action_loader:
if self._task.async != 0:
raise AnsibleError("async mode is not supported with the %s module" % module_name)
handler_name = self._task.action
elif self._task.async == 0:
handler_name = 'normal'
else:
handler_name = 'async'
handler = action_loader.get(
handler_name,
task=self._task,
connection=connection,
connection_info=self._connection_info,
loader=self._loader,
templar=templar,
shared_loader_obj=self._shared_loader_obj,
)
if not handler:
raise AnsibleError("the handler '%s' was not found" % handler_name)
return handler
def _compute_delegate(self, variables):
# get the vars for the delegate by its name
try:
this_info = variables['hostvars'][self._task.delegate_to]
def _do_handler_run(self, handler, handler_name, iterator, play_context, notified_hosts=None):
# FIXME: need to use iterator.get_failed_hosts() instead?
#if not len(self.get_hosts_remaining(iterator._play)):
# self._tqm.send_callback('v2_playbook_on_no_hosts_remaining')
# result = False
# break
saved_name = handler.name
handler.name = handler_name
self._tqm.send_callback('v2_playbook_on_handler_task_start', handler)
handler.name = saved_name
if notified_hosts is None:
notified_hosts = self._notified_handlers[handler_name]
run_once = False
try:
action = action_loader.get(handler.action, class_only=True)
if handler.run_once or getattr(action, 'BYPASS_HOST_LOOP', False):
run_once = True
except KeyError:
# we don't care here, because the action may simply not have a
# corresponding action plugin
pass
host_results = []
for host in notified_hosts:
if not handler.has_triggered(host) and (host.name not in self._tqm._failed_hosts or play_context.force_handlers):
task_vars = self._variable_manager.get_vars(loader=self._loader, play=iterator._play, host=host, task=handler)
self.add_tqm_variables(task_vars, play=iterator._play)
self._queue_task(host, handler, task_vars, play_context)
if run_once:
break
# collect the results from the handler run
host_results = self._wait_on_pending_results(iterator)
try:
included_files = IncludedFile.process_include_results(
host_results,
self._tqm,
iterator=iterator,
inventory=self._inventory,
loader=self._loader,
variable_manager=self._variable_manager
)
except AnsibleError as e:
return False
result = True
if len(included_files) > 0:
for included_file in included_files:
try:
new_blocks = self._load_included_file(included_file, iterator=iterator, is_handler=True)
# for every task in each block brought in by the include, add the list
# of hosts which included the file to the notified_handlers dict
for block in new_blocks:
iterator._play.handlers.append(block)
for task in block.block:
result = self._do_handler_run(
handler=task,
handler_name=None,
iterator=iterator,
play_context=play_context,
notified_hosts=included_file._hosts[:],
)
if not result:
break
except AnsibleError as e:
for host in included_file._hosts:
iterator.mark_host_failed(host)
self._tqm._failed_hosts[host.name] = True
display.warning(str(e))
continue
# wipe the notification list
self._notified_handlers[handler_name] = []
display.debug("done running handlers, result is: %s" % result)
return result
def run(self, iterator, connection_info):
'''
The linear strategy is simple - get the next task and queue
it for all hosts, then wait for the queue to drain before
moving on to the next task
'''
# iteratate over each task, while there is one left to run
result = True
work_to_do = True
while work_to_do and not self._tqm._terminated:
try:
debug("getting the remaining hosts for this loop")
hosts_left = self._inventory.get_hosts(iterator._play.hosts)
debug("done getting the remaining hosts for this loop")
# queue up this task for each host in the inventory
callback_sent = False
work_to_do = False
host_results = []
host_tasks = self._get_next_task_lockstep(hosts_left, iterator)
for (host, task) in host_tasks:
if not task:
continue
run_once = False
work_to_do = True
# test to see if the task across all hosts points to an action plugin which
# sets BYPASS_HOST_LOOP to true, or if it has run_once enabled. If so, we
# will only send this task to the first host in the list.
try:
action = action_loader.get(task.action, class_only=True)
if task.run_once or getattr(action, 'BYPASS_HOST_LOOP', False):
run_once = True
except KeyError:
# we don't care here, because the action may simply not have a
# corresponding action plugin
pass
# check to see if this task should be skipped, due to it being a member of a
# role which has already run (and whether that role allows duplicate execution)
if task._role and task._role.has_run():
# If there is no metadata, the default behavior is to not allow duplicates,
# if there is metadata, check to see if the allow_duplicates flag was set to true
if task._role._metadata is None or task._role._metadata and not task._role._metadata.allow_duplicates:
debug("'%s' skipped because role has already run" % task)
continue
if task.action == 'meta':
# meta tasks store their args in the _raw_params field of args,
# since they do not use k=v pairs, so get that
meta_action = task.args.get('_raw_params')
if meta_action == 'noop':
# FIXME: issue a callback for the noop here?
continue
elif meta_action == 'flush_handlers':
self.run_handlers(iterator, connection_info)
else:
raise AnsibleError("invalid meta action requested: %s" % meta_action, obj=task._ds)
else:
debug("getting variables")
task_vars = self._variable_manager.get_vars(loader=self._loader, play=iterator._play, host=host, task=task)
task_vars = self.add_tqm_variables(task_vars, play=iterator._play)
templar = Templar(loader=self._loader, variables=task_vars)
debug("done getting variables")
if not callback_sent:
temp_task = task.copy()
temp_task.name = templar.template(temp_task.get_name(), fail_on_undefined=False)
self._tqm.send_callback('v2_playbook_on_task_start', temp_task, is_conditional=False)
callback_sent = True
self._blocked_hosts[host.get_name()] = True
#Code for Distributed ansible.
self._pending_results += 1
dtask = {}
(worker_prc, main_q, rslt_q) = self._workers[self._cur_worker]
t_uuid = task._uuid
task._uuid = None
dtask['host'] = jsonpickle.encode(host)
dtask['task_vars'] = jsonpickle.encode(task_vars)
dtask['task'] = jsonpickle.encode(task)
dtask['conn_info'] = jsonpickle.encode(connection_info)
dtask['base_dir'] = self._loader.get_basedir()
# dtask['uuid'] = t_uuid
final_task = json.dumps(dtask)
remote_task = TaskRpcClient()
task_response = remote_task.put(final_task)
# self._queue_task(host, task, task_vars, connection_info)
task_result = json.loads(task_response)
rslt_q.put(jsonpickle.decode(task_result),block=False)
results = self._process_pending_results(iterator)
host_results.extend(results)
# if we're bypassing the host loop, break out now
if run_once:
break
debug("done queuing things up, now waiting for results queue to drain")
results = self._wait_on_pending_results(iterator)
host_results.extend(results)
if not work_to_do and len(iterator.get_failed_hosts()) > 0:
debug("out of hosts to run on")
self._tqm.send_callback('v2_playbook_on_no_hosts_remaining')
result = False
break
try:
included_files = IncludedFile.process_include_results(host_results, self._tqm, iterator=iterator, loader=self._loader, variable_manager=self._variable_manager)
except AnsibleError, e:
return False
if len(included_files) > 0:
noop_task = Task()
noop_task.action = 'meta'
noop_task.args['_raw_params'] = 'noop'
noop_task.set_loader(iterator._play._loader)
all_blocks = dict((host, []) for host in hosts_left)
for included_file in included_files:
# included hosts get the task list while those excluded get an equal-length
# list of noop tasks, to make sure that they continue running in lock-step
try:
new_blocks = self._load_included_file(included_file, iterator=iterator)
except AnsibleError, e:
for host in included_file._hosts:
iterator.mark_host_failed(host)
# FIXME: callback here?
print(e)
continue
for new_block in new_blocks:
noop_block = Block(parent_block=task._block)
noop_block.block = [noop_task for t in new_block.block]
noop_block.always = [noop_task for t in new_block.always]
noop_block.rescue = [noop_task for t in new_block.rescue]
for host in hosts_left:
if host in included_file._hosts:
task_vars = self._variable_manager.get_vars(loader=self._loader, play=iterator._play, host=host, task=included_file._task)
final_block = new_block.filter_tagged_tasks(connection_info, task_vars)
all_blocks[host].append(final_block)
else:
all_blocks[host].append(noop_block)
for host in hosts_left:
iterator.add_tasks(host, all_blocks[host])
debug("results queue empty")
