use zmq.IPC_PATH_MAX_LEN constant

less code duplication
better language

salt/minion.py

@@ -30,7 +30,7 @@ except ImportError:
 # Import salt libs
 from salt.exceptions import (
     AuthenticationError, CommandExecutionError, CommandNotFoundError,
-    SaltInvocationError, SaltReqTimeoutError, SaltSystemExit
+    SaltInvocationError, SaltReqTimeoutError
 )
 import salt.client
 import salt.crypt
@@ -631,25 +631,9 @@ class Minion(object):
             )
         else:
             epub_uri = 'ipc://{0}'.format(epub_sock_path)
+            salt.utils.check_ipc_path_max_len(epub_uri)
             epull_uri = 'ipc://{0}'.format(epull_sock_path)
-            for uri in (epub_uri, epull_uri):
+            salt.utils.check_ipc_path_max_len(epull_uri)
-                if uri.startswith('tcp://'):
-                    # This check only applies to IPC sockets
-                    continue
-                # The socket path is limited to 107 characters on Solaris and
-                # Linux, and 103 characters on BSD-based systems.
-                # Let's fail at the lower level so no system checks are
-                # required.
-                if len(uri) > 103:
-                    raise SaltSystemExit(
-                        'The socket path length is more that what ZMQ allows. '
-                        'The length of {0!r} is more than 103 characters. '
-                        'Either try to reduce the length of this setting\'s '
-                        'path or switch to TCP; In the configuration file set '
-                        '"ipc_mode: tcp"'.format(
-                            uri
-                        )
-                    )
         log.debug(
             '{0} PUB socket URI: {1}'.format(
                 self.__class__.__name__, epub_uri

salt/utils/__init__.py

@@ -20,6 +20,7 @@ import datetime
 import platform
 import tempfile
 import subprocess
+import zmq
 from calendar import month_abbr as months
 
 try:
@@ -32,7 +33,9 @@ except ImportError:
 # Import salt libs
 import salt.minion
 import salt.payload
-from salt.exceptions import SaltClientError, CommandNotFoundError
+from salt.exceptions import (
+        SaltClientError, CommandNotFoundError, SaltSystemExit
+)
 
 
 # Do not use these color declarations, use get_colors()
@@ -795,3 +798,18 @@ def is_linux():
     Simple function to return if a host is Linux or not
     '''
     return sys.platform.startswith('linux')
+
+
+def check_ipc_path_max_len(uri):
+    # The socket path is limited to 107 characters on Solaris and
+    # Linux, and 103 characters on BSD-based systems.
+    if zmq.IPC_PATH_MAX_LEN and len(uri) > zmq.IPC_PATH_MAX_LEN:
+        raise SaltSystemExit(
+            'The socket path is longer than allowed by OS. '
+            '{0!r} is longer than {1} characters. '
+            'Either try to reduce the length of this setting\'s '
+            'path or switch to TCP; in the configuration file, '
+            'set "ipc_mode: tcp".'.format(
+                uri, zmq.IPC_PATH_MAX_LEN
+            )
+        )

salt/utils/event.py

@@ -29,8 +29,8 @@ import zmq
 import salt.payload
 import salt.loader
 import salt.state
+import salt.utils
 from salt._compat import string_types
-from salt.exceptions import SaltSystemExit
 log = logging.getLogger(__name__)
 
 
@@ -57,10 +57,12 @@ class SaltEvent(object):
                     sock_dir,
                     'master_event_pub.ipc'
                     ))
+            salt.utils.check_ipc_path_max_len(puburi)
             pulluri = 'ipc://{0}'.format(os.path.join(
                     sock_dir,
                     'master_event_pull.ipc'
                     ))
+            salt.utils.check_ipc_path_max_len(pulluri)
         else:
             if kwargs.get('ipc_mode', '') == 'tcp':
                 puburi = 'tcp://127.0.0.1:{0}'.format(
@@ -74,29 +76,12 @@ class SaltEvent(object):
                         sock_dir,
                         'minion_event_{0}_pub.ipc'.format(id_hash)
                         ))
+                salt.utils.check_ipc_path_max_len(puburi)
                 pulluri = 'ipc://{0}'.format(os.path.join(
                         sock_dir,
                         'minion_event_{0}_pull.ipc'.format(id_hash)
                         ))
-        for uri in (puburi, pulluri):
+                salt.utils.check_ipc_path_max_len(pulluri)
-            if uri.startswith('tcp://'):
-                # This check only applies to IPC sockets
-                continue
-            # The socket path is limited to 107 characters on Solaris and
-            # Linux, and 103 characters on BSD-based systems.
-            # Let's fail at the lower level so no system checks are
-            # required.
-            if len(uri) > 103:
-                raise SaltSystemExit(
-                    'The socket path length is more that what ZMQ allows. '
-                    'The length of {0!r} is more than 103 characters. '
-                    'Either try to reduce the length of this setting\'s '
-                    'path or switch to TCP; In the configuration file set '
-                    '"ipc_mode: tcp"'.format(
-                        uri
-                    )
-                )
-
         log.debug(
             '{0} PUB socket URI: {1}'.format(self.__class__.__name__, puburi)
         )
@@ -105,7 +90,6 @@ class SaltEvent(object):
         )
         return puburi, pulluri
 
-
     def subscribe(self, tag):
         '''
         Subscribe to events matching the passed tag.