issue #424: ansible: make put_file() raise AnsibleFileNotFound

ansible_mitogen/connection.py

@@ -29,6 +29,7 @@
 from __future__ import absolute_import
 from __future__ import unicode_literals
 
+import errno
 import logging
 import os
 import pprint
@@ -1007,6 +1008,11 @@ class Connection(ansible.plugins.connection.ConnectionBase):
     #: slightly more overhead, so just randomly subtract 4KiB.
     SMALL_FILE_LIMIT = mitogen.core.CHUNK_SIZE - 4096
 
+    def _throw_io_error(self, e, path):
+        if e.args[0] == errno.ENOENT:
+            s = 'file or module does not exist: ' + path
+            raise ansible.errors.AnsibleFileNotFound(s)
+
     def put_file(self, in_path, out_path):
         """
         Implement put_file() by streamily transferring the file via
@@ -1017,7 +1023,12 @@ class Connection(ansible.plugins.connection.ConnectionBase):
         :param str out_path:
             Remote filesystem path to write.
         """
-        st = os.stat(in_path)
+        try:
+            st = os.stat(in_path)
+        except OSError as e:
+            self._throw_io_error(e, in_path)
+            raise
+
         if not stat.S_ISREG(st.st_mode):
             raise IOError('%r is not a regular file.' % (in_path,))
 
@@ -1025,17 +1036,22 @@ class Connection(ansible.plugins.connection.ConnectionBase):
         # rather than introducing an extra RTT for the child to request it from
         # FileService.
         if st.st_size <= self.SMALL_FILE_LIMIT:
-            fp = open(in_path, 'rb')
             try:
-                s = fp.read(self.SMALL_FILE_LIMIT + 1)
-            finally:
-                fp.close()
+                fp = open(in_path, 'rb')
+                try:
+                    s = fp.read(self.SMALL_FILE_LIMIT + 1)
+                finally:
+                    fp.close()
+            except OSError:
+                self._throw_io_error(e, in_path)
+                raise
 
             # Ensure did not grow during read.
             if len(s) == st.st_size:
                 return self.put_data(out_path, s, mode=st.st_mode,
                                      utimes=(st.st_atime, st.st_mtime))
 
+        self._connect()
         self.parent.call_service(
             service_name='mitogen.service.FileService',
             method_name='register',

ansible_mitogen/process.py

@@ -154,13 +154,16 @@ class MuxProcess(object):
     _instance = None
 
     @classmethod
-    def start(cls):
+    def start(cls, _init_logging=True):
         """
         Arrange for the subprocess to be started, if it is not already running.
 
         The parent process picks a UNIX socket path the child will use prior to
         fork, creates a socketpair used essentially as a semaphore, then blocks
         waiting for the child to indicate the UNIX socket is ready for use.
+
+        :param bool _init_logging:
+            For testing, if :data:`False`, don't initialize logging.
         """
         if cls.worker_sock is not None:
             return
@@ -180,7 +183,8 @@ class MuxProcess(object):
 
         cls.original_env = dict(os.environ)
         cls.child_pid = os.fork()
-        ansible_mitogen.logging.setup()
+        if _init_logging:
+            ansible_mitogen.logging.setup()
         if cls.child_pid:
             cls.child_sock.close()
             cls.child_sock = None

tests/ansible/tests/connection_test.py

@@ -1,19 +1,33 @@
 
 from __future__ import absolute_import
+import os
 import os.path
 import subprocess
 import tempfile
+import time
+
 import unittest2
 
 import mock
+import ansible.errors
+import ansible.playbook.play_context
 
+import mitogen.core
 import ansible_mitogen.connection
+import ansible_mitogen.plugins.connection.mitogen_local
+import ansible_mitogen.process
 import testlib
 
 
 LOGGER_NAME = ansible_mitogen.target.LOG.name
 
 
+# TODO: fixtureize
+import mitogen.utils
+mitogen.utils.log_to_file()
+ansible_mitogen.process.MuxProcess.start(_init_logging=False)
+
+
 class OptionalIntTest(unittest2.TestCase):
     func = staticmethod(ansible_mitogen.connection.optional_int)
 
@@ -34,5 +48,84 @@ class OptionalIntTest(unittest2.TestCase):
         self.assertEquals(None, self.func({1:2}))
 
 
+class ConnectionMixin(object):
+    klass = ansible_mitogen.plugins.connection.mitogen_local.Connection
+
+    def make_connection(self):
+        play_context = ansible.playbook.play_context.PlayContext()
+        return self.klass(play_context, new_stdin=False)
+
+    def wait_for_completion(self):
+        # put_data() is asynchronous, must wait for operation to happen. Do
+        # that by making RPC for some junk that must run on the thread once op
+        # completes.
+        self.conn.get_chain().call(os.getpid)
+
+    def setUp(self):
+        super(ConnectionMixin, self).setUp()
+        self.conn = self.make_connection()
+
+    def tearDown(self):
+        self.conn.close()
+        super(ConnectionMixin, self).tearDown()
+
+
+class PutDataTest(ConnectionMixin, unittest2.TestCase):
+    def test_out_path(self):
+        path = tempfile.mktemp(prefix='mitotest')
+        contents = mitogen.core.b('contents')
+
+        self.conn.put_data(path, contents)
+        self.wait_for_completion()
+        self.assertEquals(contents, open(path, 'rb').read())
+        os.unlink(path)
+
+    def test_mode(self):
+        path = tempfile.mktemp(prefix='mitotest')
+        contents = mitogen.core.b('contents')
+
+        self.conn.put_data(path, contents, mode=int('0123', 8))
+        self.wait_for_completion()
+        st = os.stat(path)
+        self.assertEquals(int('0123', 8), st.st_mode & int('0777', 8))
+        os.unlink(path)
+
+
+class PutFileTest(ConnectionMixin, unittest2.TestCase):
+    @classmethod
+    def setUpClass(cls):
+        super(PutFileTest, cls).setUpClass()
+        cls.big_path = tempfile.mktemp(prefix='mitotestbig')
+        open(cls.big_path, 'w').write('x'*1048576)
+
+    @classmethod
+    def tearDownClass(cls):
+        os.unlink(cls.big_path)
+        super(PutFileTest, cls).tearDownClass()
+
+    def test_out_path_tiny(self):
+        path = tempfile.mktemp(prefix='mitotest')
+        self.conn.put_file(in_path=__file__, out_path=path)
+        self.wait_for_completion()
+        self.assertEquals(open(path, 'rb').read(),
+                          open(__file__, 'rb').read())
+
+        os.unlink(path)
+
+    def test_out_path_big(self):
+        path = tempfile.mktemp(prefix='mitotest')
+        self.conn.put_file(in_path=self.big_path, out_path=path)
+        self.wait_for_completion()
+        self.assertEquals(open(path, 'rb').read(),
+                          open(self.big_path, 'rb').read())
+        #self._compare_times_modes(path, __file__)
+        os.unlink(path)
+
+    def test_big_in_path_not_found(self):
+        path = tempfile.mktemp(prefix='mitotest')
+        self.assertRaises(ansible.errors.AnsibleFileNotFound,
+            lambda: self.conn.put_file(in_path='/nonexistent', out_path=path))
+
+
 if __name__ == '__main__':
     unittest2.main()