Reorganizing the way the connection lockfile is created

lib/ansible/executor/task_queue_manager.py

@@ -23,7 +23,6 @@ import multiprocessing
 import os
 import socket
 import sys
-import tempfile
 
 from ansible import constants as C
 from ansible.errors import AnsibleError
@@ -79,10 +78,6 @@ class TaskQueueManager:
         self._failed_hosts      = dict()
         self._unreachable_hosts = dict()
 
-        # A temporary file (opened pre-fork) used by connection plugins for
-        # inter-process locking.
-        self._options.connection_lockfile = tempfile.TemporaryFile()
-
         self._final_q = multiprocessing.Queue()
 
         # create the pool of worker threads, based on the number of forks specified

lib/ansible/playbook/play_context.py

@@ -24,6 +24,7 @@ __metaclass__ = type
 import pipes
 import random
 import re
+import tempfile
 
 from ansible import constants as C
 from ansible.errors import AnsibleError
@@ -161,7 +162,6 @@ class PlayContext(Base):
     _private_key_file = FieldAttribute(isa='string', default=C.DEFAULT_PRIVATE_KEY_FILE)
     _timeout          = FieldAttribute(isa='int', default=C.DEFAULT_TIMEOUT)
     _shell            = FieldAttribute(isa='string')
-    _connection_lockfd= FieldAttribute(isa='int', default=None)
 
     # privilege escalation fields
     _become           = FieldAttribute(isa='bool')
@@ -200,6 +200,10 @@ class PlayContext(Base):
         self.password    = passwords.get('conn_pass','')
         self.become_pass = passwords.get('become_pass','')
 
+        # A temporary file (opened pre-fork) used by connection
+        # plugins for inter-process locking.
+        self.connection_lockf = tempfile.TemporaryFile()
+
         # set options before play to allow play to override them
         if options:
             self.set_options(options)
@@ -245,11 +249,6 @@ class PlayContext(Base):
         if options.connection:
             self.connection = options.connection
 
-        # The lock file is opened in the parent process, and the workers will
-        # inherit the open file, so we just need to help them find it.
-        if options.connection_lockfile:
-            self.connection_lockfd = options.connection_lockfile.fileno()
-
         self.remote_user = options.remote_user
         self.private_key_file = options.private_key_file
 
@@ -328,6 +327,11 @@ class PlayContext(Base):
 
         return new_info
 
+    def copy(self, exclude_block=False):
+        new_me = super(PlayContext, self).copy()
+        new_me.connection_lockf = self.connection_lockf
+        return new_me
+
     def make_become_cmd(self, cmd, executable=None):
         """ helper function to create privilege escalation commands """
 

lib/ansible/plugins/connections/__init__.py

@@ -156,12 +156,12 @@ class ConnectionBase(with_metaclass(ABCMeta, object)):
             raise AnsibleError('Incorrect %s password' % self._play_context.become_method)
 
     def lock_connection(self):
-        f = self._play_context.connection_lockfd
-        self._display.vvvv('CONNECTION: pid %d waiting for lock on %d' % (os.getpid(), f))
-        fcntl.lockf(f, fcntl.LOCK_EX)
-        self._display.vvvv('CONNECTION: pid %d acquired lock on %d' % (os.getpid(), f))
+        f = self._play_context.connection_lockf
+        self._display.vvvv('CONNECTION: pid %d waiting for lock on %d' % (os.getpid(), f.fileno()))
+        fcntl.lockf(f.fileno(), fcntl.LOCK_EX)
+        self._display.vvvv('CONNECTION: pid %d acquired lock on %d' % (os.getpid(), f.fileno()))
 
     def unlock_connection(self):
-        f = self._play_context.connection_lockfd
-        fcntl.lockf(f, fcntl.LOCK_UN)
-        self._display.vvvv('CONNECTION: pid %d released lock on %d' % (os.getpid(), f))
+        f = self._play_context.connection_lockf
+        fcntl.lockf(f.fileno(), fcntl.LOCK_UN)
+        self._display.vvvv('CONNECTION: pid %d released lock on %d' % (os.getpid(), f.fileno()))