def compile(self):
'''
Compiles and returns the task list for this play, compiled from the
roles (which are themselves compiled recursively) and/or the list of
tasks specified in the play.
'''
# create a block containing a single flush handlers meta
# task, so we can be sure to run handlers at certain points
# of the playbook execution
flush_block = Block.load(
data={'meta': 'flush_handlers'},
play=self,
variable_manager=self._variable_manager,
loader=self._loader
)
for task in flush_block.block:
task.implicit = True
block_list = []
if self.force_handlers:
noop_task = Task()
noop_task.action = 'meta'
noop_task.args['_raw_params'] = 'noop'
noop_task.implicit = True
noop_task.set_loader(self._loader)
b = Block(play=self)
b.block = self.pre_tasks or [noop_task]
b.always = [flush_block]
block_list.append(b)
tasks = self._compile_roles() + self.tasks
b = Block(play=self)
b.block = tasks or [noop_task]
b.always = [flush_block]
block_list.append(b)
b = Block(play=self)
b.block = self.post_tasks or [noop_task]
b.always = [flush_block]
block_list.append(b)
return block_list
block_list.extend(self.pre_tasks)
block_list.append(flush_block)
block_list.extend(self._compile_roles())
block_list.extend(self.tasks)
block_list.append(flush_block)
block_list.extend(self.post_tasks)
block_list.append(flush_block)
return block_list
def _create_noop_block_from(self, original_block, parent):
noop_block = Block(parent_block=parent)
noop_block.block = self._replace_with_noop(original_block.block)
noop_block.always = self._replace_with_noop(original_block.always)
noop_block.rescue = self._replace_with_noop(original_block.rescue)
return noop_block
def _create_noop_block_from(self, original_block, parent):
noop_block = Block(parent_block=parent)
noop_block.block = self._replace_with_noop(original_block.block)
noop_block.always = self._replace_with_noop(original_block.always)
noop_block.rescue = self._replace_with_noop(original_block.rescue)
return noop_block
def __init__(self,
inventory,
play,
play_context,
variable_manager,
all_vars,
start_at_done=False):
self._play = play
self._blocks = []
setup_block = Block(play=self._play)
setup_task = Task(block=setup_block)
setup_task.action = 'setup'
setup_task.tags = ['always']
setup_task.args = {}
setup_task.set_loader(self._play._loader)
setup_block.block = [setup_task]
setup_block = setup_block.filter_tagged_tasks(play_context, all_vars)
self._blocks.append(setup_block)
for block in self._play.compile():
new_block = block.filter_tagged_tasks(play_context, all_vars)
if new_block.has_tasks():
self._blocks.append(new_block)
self._host_states = {}
start_at_matched = False
for host in inventory.get_hosts(self._play.hosts):
self._host_states[host.name] = HostState(blocks=self._blocks)
# if the host's name is in the variable manager's fact cache, then set
# its _gathered_facts flag to true for smart gathering tests later
if host.name in variable_manager._fact_cache:
host._gathered_facts = True
# if we're looking to start at a specific task, iterate through
# the tasks for this host until we find the specified task
if play_context.start_at_task is not None and not start_at_done:
while True:
(s, task) = self.get_next_task_for_host(host, peek=True)
if s.run_state == self.ITERATING_COMPLETE:
break
if task.name == play_context.start_at_task or fnmatch.fnmatch(task.name, play_context.start_at_task) or \
task.get_name() == play_context.start_at_task or fnmatch.fnmatch(task.get_name(), play_context.start_at_task):
start_at_matched = True
break
else:
self.get_next_task_for_host(host)
# finally, reset the host's state to ITERATING_SETUP
self._host_states[host.name].run_state = self.ITERATING_SETUP
if start_at_matched:
# we have our match, so clear the start_at_task field on the
# play context to flag that we've started at a task (and future
# plays won't try to advance)
play_context.start_at_task = None
# Extend the play handlers list to include the handlers defined in roles
self._play.handlers.extend(play.compile_roles_handlers())
def _create_noop_block_from(self, original_block, parent):
"""Create a noop block from a block"""
self._debug('_create_noop_block_from...')
noop_block = Block(parent_block=parent)
noop_block.block = self._replace_with_noop(original_block.block)
noop_block.always = self._replace_with_noop(original_block.always)
noop_block.rescue = self._replace_with_noop(original_block.rescue)
return noop_block
def __init__(self, inventory, play, play_context, variable_manager, all_vars, start_at_done=False):
self._play = play
self._blocks = []
setup_block = Block(play=self._play)
setup_task = Task(block=setup_block)
setup_task.action = 'setup'
setup_task.tags = ['always']
setup_task.args = {}
setup_task.set_loader(self._play._loader)
setup_block.block = [setup_task]
setup_block = setup_block.filter_tagged_tasks(play_context, all_vars)
self._blocks.append(setup_block)
for block in self._play.compile():
new_block = block.filter_tagged_tasks(play_context, all_vars)
if new_block.has_tasks():
self._blocks.append(new_block)
self._host_states = {}
start_at_matched = False
for host in inventory.get_hosts(self._play.hosts):
self._host_states[host.name] = HostState(blocks=self._blocks)
# if the host's name is in the variable manager's fact cache, then set
# its _gathered_facts flag to true for smart gathering tests later
if host.name in variable_manager._fact_cache:
host._gathered_facts = True
# if we're looking to start at a specific task, iterate through
# the tasks for this host until we find the specified task
if play_context.start_at_task is not None and not start_at_done:
while True:
(s, task) = self.get_next_task_for_host(host, peek=True)
if s.run_state == self.ITERATING_COMPLETE:
break
if task.name == play_context.start_at_task or fnmatch.fnmatch(task.name, play_context.start_at_task) or \
task.get_name() == play_context.start_at_task or fnmatch.fnmatch(task.get_name(), play_context.start_at_task):
start_at_matched = True
break
else:
self.get_next_task_for_host(host)
# finally, reset the host's state to ITERATING_SETUP
if start_at_matched:
self._host_states[host.name].did_start_at_task = True
self._host_states[host.name].run_state = self.ITERATING_SETUP
if start_at_matched:
# we have our match, so clear the start_at_task field on the
# play context to flag that we've started at a task (and future
# plays won't try to advance)
play_context.start_at_task = None
# Extend the play handlers list to include the handlers defined in roles
self._play.handlers.extend(play.compile_roles_handlers())
def compile(self, play, dep_chain=None):
'''
Returns the task list for this role, which is created by first
recursively compiling the tasks for all direct dependencies, and
then adding on the tasks for this role.
The role compile() also remembers and saves the dependency chain
with each task, so tasks know by which route they were found, and
can correctly take their parent's tags/conditionals into account.
'''
from ansible.playbook.block import Block
from ansible.playbook.task import Task
block_list = []
# update the dependency chain here
if dep_chain is None:
dep_chain = []
new_dep_chain = dep_chain + [self]
deps = self.get_direct_dependencies()
for dep in deps:
dep_blocks = dep.compile(play=play, dep_chain=new_dep_chain)
block_list.extend(dep_blocks)
for task_block in self._task_blocks:
new_task_block = task_block.copy()
new_task_block._dep_chain = new_dep_chain
new_task_block._play = play
block_list.append(new_task_block)
eor_block = Block(play=play)
eor_block._loader = self._loader
eor_block._role = self
eor_block._variable_manager = self._variable_manager
eor_block.run_once = False
eor_task = Task(block=eor_block)
eor_task._role = self
eor_task.action = 'meta'
eor_task.args = {'_raw_params': 'role_complete'}
eor_task.implicit = True
eor_task.tags = ['always']
eor_task.when = True
eor_block.block = [eor_task]
block_list.append(eor_block)
return block_list
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 __init__(self, inventory, play, play_context, variable_manager, all_vars, start_at_done=False):
self._play = play
self._blocks = []
self._task_uuid_cache = dict()
# Default options to gather
gather_subset = C.DEFAULT_GATHER_SUBSET
gather_timeout = C.DEFAULT_GATHER_TIMEOUT
# Retrieve subset to gather
if self._play.gather_subset is not None:
gather_subset = self._play.gather_subset
# Retrieve timeout for gather
if self._play.gather_timeout is not None:
gather_timeout = self._play.gather_timeout
setup_block = Block(play=self._play)
setup_task = Task(block=setup_block)
setup_task.action = "setup"
setup_task.name = "Gathering Facts"
setup_task.tags = ["always"]
setup_task.args = {"gather_subset": gather_subset}
if gather_timeout:
setup_task.args["gather_timeout"] = gather_timeout
setup_task.set_loader(self._play._loader)
setup_block.block = [setup_task]
setup_block = setup_block.filter_tagged_tasks(play_context, all_vars)
self._blocks.append(setup_block)
self.cache_block_tasks(setup_block)
for block in self._play.compile():
new_block = block.filter_tagged_tasks(play_context, all_vars)
if new_block.has_tasks():
self.cache_block_tasks(new_block)
self._blocks.append(new_block)
for handler_block in self._play.handlers:
self.cache_block_tasks(handler_block)
self._host_states = {}
start_at_matched = False
for host in inventory.get_hosts(self._play.hosts):
self._host_states[host.name] = HostState(blocks=self._blocks)
# if the host's name is in the variable manager's fact cache, then set
# its _gathered_facts flag to true for smart gathering tests later
if host.name in variable_manager._fact_cache and variable_manager._fact_cache.get("module_setup", False):
host._gathered_facts = True
# if we're looking to start at a specific task, iterate through
# the tasks for this host until we find the specified task
if play_context.start_at_task is not None and not start_at_done:
while True:
(s, task) = self.get_next_task_for_host(host, peek=True)
if s.run_state == self.ITERATING_COMPLETE:
break
if (
task.name == play_context.start_at_task
or fnmatch.fnmatch(task.name, play_context.start_at_task)
or task.get_name() == play_context.start_at_task
or fnmatch.fnmatch(task.get_name(), play_context.start_at_task)
):
start_at_matched = True
break
else:
self.get_next_task_for_host(host)
# finally, reset the host's state to ITERATING_SETUP
if start_at_matched:
self._host_states[host.name].did_start_at_task = True
self._host_states[host.name].run_state = self.ITERATING_SETUP
if start_at_matched:
# we have our match, so clear the start_at_task field on the
# play context to flag that we've started at a task (and future
# plays won't try to advance)
play_context.start_at_task = None
def __init__(self,
inventory,
play,
play_context,
variable_manager,
all_vars,
start_at_done=False):
self._play = play
self._blocks = []
self._variable_manager = variable_manager
setup_block = Block(play=self._play)
# Gathering facts with run_once would copy the facts from one host to
# the others.
setup_block.run_once = False
setup_task = Task(block=setup_block)
setup_task.action = 'gather_facts'
# TODO: hardcoded resolution here, but should use actual resolution code in the end,
# in case of 'legacy' mismatch
setup_task.resolved_action = 'ansible.builtin.gather_facts'
setup_task.name = 'Gathering Facts'
setup_task.args = {}
# Unless play is specifically tagged, gathering should 'always' run
if not self._play.tags:
setup_task.tags = ['always']
# Default options to gather
for option in ('gather_subset', 'gather_timeout', 'fact_path'):
value = getattr(self._play, option, None)
if value is not None:
setup_task.args[option] = value
setup_task.set_loader(self._play._loader)
# short circuit fact gathering if the entire playbook is conditional
if self._play._included_conditional is not None:
setup_task.when = self._play._included_conditional[:]
setup_block.block = [setup_task]
setup_block = setup_block.filter_tagged_tasks(all_vars)
self._blocks.append(setup_block)
# keep flatten (no blocks) list of all tasks from the play
# used for the lockstep mechanism in the linear strategy
self.all_tasks = setup_block.get_tasks()
for block in self._play.compile():
new_block = block.filter_tagged_tasks(all_vars)
if new_block.has_tasks():
self._blocks.append(new_block)
self.all_tasks.extend(new_block.get_tasks())
# keep list of all handlers, it is copied into each HostState
# at the beginning of IteratingStates.HANDLERS
# the copy happens at each flush in order to restore the original
# list and remove any included handlers that might not be notified
# at the particular flush
self.handlers = [h for b in self._play.handlers for h in b.block]
self._host_states = {}
start_at_matched = False
batch = inventory.get_hosts(self._play.hosts, order=self._play.order)
self.batch_size = len(batch)
for host in batch:
self.set_state_for_host(host.name, HostState(blocks=self._blocks))
# if we're looking to start at a specific task, iterate through
# the tasks for this host until we find the specified task
if play_context.start_at_task is not None and not start_at_done:
while True:
(s, task) = self.get_next_task_for_host(host, peek=True)
if s.run_state == IteratingStates.COMPLETE:
break
if task.name == play_context.start_at_task or (task.name and fnmatch.fnmatch(task.name, play_context.start_at_task)) or \
task.get_name() == play_context.start_at_task or fnmatch.fnmatch(task.get_name(), play_context.start_at_task):
start_at_matched = True
break
self.set_state_for_host(host.name, s)
# finally, reset the host's state to IteratingStates.SETUP
if start_at_matched:
self._host_states[host.name].did_start_at_task = True
self._host_states[
host.name].run_state = IteratingStates.SETUP
if start_at_matched:
# we have our match, so clear the start_at_task field on the
# play context to flag that we've started at a task (and future
# plays won't try to advance)
play_context.start_at_task = None
self.end_play = False
self.cur_task = 0
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)
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 = self.get_hosts_left(iterator)
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
succeeded_hosts = {}
retry_task = True
while retry_task:
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, host))
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(
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")
if host not in succeeded_hosts:
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)
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")
# A noop task for use in padding dynamic includes
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:
if included_file._is_role:
new_ir = included_file._task.copy()
new_ir.vars.update(included_file._args)
new_blocks, handler_blocks = new_ir.get_block_list(
play=iterator._play,
variable_manager=self.
_variable_manager,
loader=self._loader,
)
self._tqm.update_handler_list([
handler
for handler_block in handler_blocks
for handler in handler_block.block
])
else:
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(
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() and iterator.is_failed(res._host):
failed_hosts.append(res._host.name)
elif res.is_unreachable():
unreachable_hosts.append(res._host.name)
else:
succeeded_hosts[res._host] = res
if (len(failed_hosts) == 0):
# No more failures means we do not need to retry anymore.
retry_task = False
else:
msg = 'Host failed, ignore/retry/abort/debug: %s on [%s] (i/r/a/d): ' % (
str(task), ' '.join(failed_hosts)) + '\n'
resp = 'bogus'
while resp.strip().lower()[:1] not in [
'i', 'r', 'a', 'd'
]:
resp = display.prompt(msg)
# Currently the only difference between ignore and repeat is setting the retry_task to 'False'
if resp.strip().lower() in ['i', 'ignore']:
retry_task = False
if resp.strip().lower() in [
'r', 'repeat', 'i', 'ignore'
]:
# We need to revert the internal failed host states if we want to ignore the errors
# The internal state should be identical to that of a successful host
for failed_host in failed_hosts:
iterator._host_states[
failed_host].run_state = PlayIterator.ITERATING_TASKS
iterator._host_states[
failed_host].fail_state = PlayIterator.FAILED_NONE
# Fix child states as well
if iterator._host_states[
failed_host].tasks_child_state:
iterator._host_states[
failed_host].tasks_child_state.run_state = PlayIterator.ITERATING_TASKS
iterator._host_states[
failed_host].tasks_child_state.fail_state = PlayIterator.FAILED_NONE
self._tqm.clear_failed_hosts()
elif resp.strip().lower() in ['a', 'abort']:
retry_task = False
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
# 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
elif resp.strip().lower() in ['d', 'debug']:
msg = "Running PDB. Refer to https://pymotw.com/2/pdb/ for instruction.\n\n"
msg += "Commmon commands:\n\n"
msg += "Print the task's error message: print(failure_debug_message)\n"
msg += 'Add a variable to a host: host_to_edit = hosts_left[0]; task._variable_manager.set_host_variable(host_to_edit,"new_var_key","new_var_value")\n'
msg += 'Print task vars: print(task_vars["var_key_name"])\n'
display.display(msg,
color='blue',
stderr=False,
screen_only=False,
log_only=False)
pdb.set_trace()
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 __init__(self, inventory, play, play_context, variable_manager, all_vars, start_at_done=False):
self._play = play
self._blocks = []
self._variable_manager = variable_manager
self._task_uuid_cache = dict()
# Default options to gather
gather_subset = play_context.gather_subset
gather_timeout = play_context.gather_timeout
fact_path = play_context.fact_path
# Retrieve subset to gather
if self._play.gather_subset is not None:
gather_subset = self._play.gather_subset
# Retrieve timeout for gather
if self._play.gather_timeout is not None:
gather_timeout = self._play.gather_timeout
# Retrieve fact_path
if self._play.fact_path is not None:
fact_path = self._play.fact_path
setup_block = Block(play=self._play)
setup_task = Task(block=setup_block)
setup_task.action = 'setup'
setup_task.name = 'Gathering Facts'
setup_task.tags = ['always']
setup_task.args = {
'gather_subset': gather_subset,
}
if gather_timeout:
setup_task.args['gather_timeout'] = gather_timeout
if fact_path:
setup_task.args['fact_path'] = fact_path
setup_task.set_loader(self._play._loader)
# short circuit fact gathering if the entire playbook is conditional
if self._play._included_conditional is not None:
setup_task.when = self._play._included_conditional[:]
setup_block.block = [setup_task]
setup_block = setup_block.filter_tagged_tasks(play_context, all_vars)
self._blocks.append(setup_block)
self.cache_block_tasks(setup_block)
for block in self._play.compile():
new_block = block.filter_tagged_tasks(play_context, all_vars)
if new_block.has_tasks():
self.cache_block_tasks(new_block)
self._blocks.append(new_block)
for handler_block in self._play.handlers:
self.cache_block_tasks(handler_block)
self._host_states = {}
start_at_matched = False
for host in inventory.get_hosts(self._play.hosts):
self._host_states[host.name] = HostState(blocks=self._blocks)
# if we're looking to start at a specific task, iterate through
# the tasks for this host until we find the specified task
if play_context.start_at_task is not None and not start_at_done:
while True:
(s, task) = self.get_next_task_for_host(host, peek=True)
if s.run_state == self.ITERATING_COMPLETE:
break
if task.name == play_context.start_at_task or fnmatch.fnmatch(task.name, play_context.start_at_task) or \
task.get_name() == play_context.start_at_task or fnmatch.fnmatch(task.get_name(), play_context.start_at_task):
start_at_matched = True
break
else:
self.get_next_task_for_host(host)
# finally, reset the host's state to ITERATING_SETUP
if start_at_matched:
self._host_states[host.name].did_start_at_task = True
self._host_states[host.name].run_state = self.ITERATING_SETUP
if start_at_matched:
# we have our match, so clear the start_at_task field on the
# play context to flag that we've started at a task (and future
# plays won't try to advance)
play_context.start_at_task = None
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:
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 __init__(self, inventory, play, play_context, variable_manager, all_vars, start_at_done=False):
self._play = play
self._blocks = []
self._task_uuid_cache = dict()
# Default options to gather
gather_subset = play_context.gather_subset
gather_timeout = play_context.gather_timeout
fact_path = play_context.fact_path
# Retrieve subset to gather
if self._play.gather_subset is not None:
gather_subset = self._play.gather_subset
# Retrieve timeout for gather
if self._play.gather_timeout is not None:
gather_timeout = self._play.gather_timeout
# Retrieve fact_path
if self._play.fact_path is not None:
fact_path = self._play.fact_path
setup_block = Block(play=self._play)
setup_task = Task(block=setup_block)
setup_task.action = 'setup'
setup_task.name = 'Gathering Facts'
setup_task.tags = ['always']
setup_task.args = {
'gather_subset': gather_subset,
}
if gather_timeout:
setup_task.args['gather_timeout'] = gather_timeout
if fact_path:
setup_task.args['fact_path'] = fact_path
setup_task.set_loader(self._play._loader)
# short circuit fact gathering if the entire playbook is conditional
if self._play._included_conditional is not None:
setup_task.when = self._play._included_conditional[:]
setup_block.block = [setup_task]
setup_block = setup_block.filter_tagged_tasks(play_context, all_vars)
self._blocks.append(setup_block)
self.cache_block_tasks(setup_block)
for block in self._play.compile():
new_block = block.filter_tagged_tasks(play_context, all_vars)
if new_block.has_tasks():
self.cache_block_tasks(new_block)
self._blocks.append(new_block)
for handler_block in self._play.handlers:
self.cache_block_tasks(handler_block)
self._host_states = {}
start_at_matched = False
for host in inventory.get_hosts(self._play.hosts):
self._host_states[host.name] = HostState(blocks=self._blocks)
# if the host's name is in the variable manager's fact cache, then set
# its _gathered_facts flag to true for smart gathering tests later
if host.name in variable_manager._fact_cache and variable_manager._fact_cache.get(host.name).get('module_setup', False):
host._gathered_facts = True
# if we're looking to start at a specific task, iterate through
# the tasks for this host until we find the specified task
if play_context.start_at_task is not None and not start_at_done:
while True:
(s, task) = self.get_next_task_for_host(host, peek=True)
if s.run_state == self.ITERATING_COMPLETE:
break
if task.name == play_context.start_at_task or fnmatch.fnmatch(task.name, play_context.start_at_task) or \
task.get_name() == play_context.start_at_task or fnmatch.fnmatch(task.get_name(), play_context.start_at_task):
start_at_matched = True
break
else:
self.get_next_task_for_host(host)
# finally, reset the host's state to ITERATING_SETUP
if start_at_matched:
self._host_states[host.name].did_start_at_task = True
self._host_states[host.name].run_state = self.ITERATING_SETUP
if start_at_matched:
# we have our match, so clear the start_at_task field on the
# play context to flag that we've started at a task (and future
# plays won't try to advance)
play_context.start_at_task = None
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 __init__(self,
inventory,
play,
play_context,
variable_manager,
all_vars,
start_at_done=False):
self._play = play
self._blocks = []
self._variable_manager = variable_manager
# Default options to gather
gather_subset = self._play.gather_subset
gather_timeout = self._play.gather_timeout
fact_path = self._play.fact_path
setup_block = Block(play=self._play)
# Gathering facts with run_once would copy the facts from one host to
# the others.
setup_block.run_once = False
setup_task = Task(block=setup_block)
setup_task.action = 'gather_facts'
setup_task.name = 'Gathering Facts'
setup_task.args = {
'gather_subset': gather_subset,
}
# Unless play is specifically tagged, gathering should 'always' run
if not self._play.tags:
setup_task.tags = ['always']
if gather_timeout:
setup_task.args['gather_timeout'] = gather_timeout
if fact_path:
setup_task.args['fact_path'] = fact_path
setup_task.set_loader(self._play._loader)
# short circuit fact gathering if the entire playbook is conditional
if self._play._included_conditional is not None:
setup_task.when = self._play._included_conditional[:]
setup_block.block = [setup_task]
setup_block = setup_block.filter_tagged_tasks(all_vars)
self._blocks.append(setup_block)
for block in self._play.compile():
new_block = block.filter_tagged_tasks(all_vars)
if new_block.has_tasks():
self._blocks.append(new_block)
self._host_states = {}
start_at_matched = False
batch = inventory.get_hosts(self._play.hosts, order=self._play.order)
self.batch_size = len(batch)
for host in batch:
self._host_states[host.name] = HostState(blocks=self._blocks)
# if we're looking to start at a specific task, iterate through
# the tasks for this host until we find the specified task
if play_context.start_at_task is not None and not start_at_done:
while True:
(s, task) = self.get_next_task_for_host(host, peek=True)
if s.run_state == self.ITERATING_COMPLETE:
break
if task.name == play_context.start_at_task or fnmatch.fnmatch(task.name, play_context.start_at_task) or \
task.get_name() == play_context.start_at_task or fnmatch.fnmatch(task.get_name(), play_context.start_at_task):
start_at_matched = True
break
else:
self.get_next_task_for_host(host)
# finally, reset the host's state to ITERATING_SETUP
if start_at_matched:
self._host_states[host.name].did_start_at_task = True
self._host_states[
host.name].run_state = self.ITERATING_SETUP
if start_at_matched:
# we have our match, so clear the start_at_task field on the
# play context to flag that we've started at a task (and future
# plays won't try to advance)
play_context.start_at_task = None
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 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)
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")
