From 04f6a222016fad6ebca9152fbc4ccfab93bbe09e Mon Sep 17 00:00:00 2001
From: Mikhail Erofeev <merofeev@graphics.cs.msu.ru>
Date: Fri, 5 Oct 2018 16:47:45 +0300
Subject: [PATCH] Enable user to ignore file change events in files matching
 given patterns.

---
 README.rst                                  | 5 +++++
 docker_volume_watcher/cli.py                | 7 ++++++-
 docker_volume_watcher/container_monitor.py  | 7 +++++--
 docker_volume_watcher/container_notifier.py | 8 ++++++--
 4 files changed, 22 insertions(+), 5 deletions(-)

diff --git a/README.rst b/README.rst
index b4cbb6f..6d5a3d7 100644
--- a/README.rst
+++ b/README.rst
@@ -43,6 +43,11 @@ You can also specify wildcards with ``*`` and ``?`` characters. For example: mon
 
     docker-volume-watcher *myproject* C:\project\folder\*
 
+Do not monitor files/directories matching ``*.git*`` and ``*build*`` patterns:
+
+.. code:: bat
+
+    docker-volume-watcher -e "*.git*" "*build*"
 
 Use flag ``-v`` to enable verbose output: the script will report start/stop events of eligible containers and print all detected file changes.
 
diff --git a/docker_volume_watcher/cli.py b/docker_volume_watcher/cli.py
index 62ac7d4..0f9e780 100644
--- a/docker_volume_watcher/cli.py
+++ b/docker_volume_watcher/cli.py
@@ -24,12 +24,17 @@ def main():
 
     parser.add_argument("-v", "--verbose", help="increase output verbosity",
                         action="store_true")
+    parser.add_argument('-e', '--exclude',
+                        help='ignore changes in files/directories matching given patterns',
+                        nargs='+')
+
     args = parser.parse_args()
 
     if args.verbose:
         logging.basicConfig(level=logging.INFO)
 
-    monitor = ContainerMonitor(args.container_pattern, args.host_dir_pattern)
+    monitor = ContainerMonitor(args.container_pattern, args.host_dir_pattern,
+                               exclude_patterns=args.exclude)
     try:
         monitor.find_containers()
         monitor.monitor()
diff --git a/docker_volume_watcher/container_monitor.py b/docker_volume_watcher/container_monitor.py
index f708b3c..38f871e 100644
--- a/docker_volume_watcher/container_monitor.py
+++ b/docker_volume_watcher/container_monitor.py
@@ -35,18 +35,20 @@ class ContainerMonitor(object):
     """
     Monitors container start/stop events and creates notifiers for mounts matching patterns.
     """
-    def __init__(self, container_name_pattern, host_dir_pattern):
+    def __init__(self, container_name_pattern, host_dir_pattern, exclude_patterns=None):
         """
         Initialize new instance of ContainerMonitor
 
         Args:
             container_name_pattern (str): Container name pattern
             host_dir_pattern (str): Host directory pattern
+            exclude_patterns (list): List of file name patterns for which changes should be ignored
         """
         self.client = docker.from_env()
         self.container_name_pattern = container_name_pattern
         self.host_dir_pattern = host_dir_pattern
         self.notifiers = {}
+        self.exclude_patterns = exclude_patterns if exclude_patterns else []
 
     def __handle_event(self, event):
         container_name = event['Actor']['Attributes']['name']
@@ -109,7 +111,8 @@ def watch_container(self, container_name):
                     'Bind of container %s was skipped for path %s as it\'s not a directory',
                     container_name, mount['Source'])
                 continue
-            notifier = ContainerNotifier(container, host_directory, mount['Destination'])
+            notifier = ContainerNotifier(
+                container, host_directory, mount['Destination'], self.exclude_patterns)
             notifiers.append(notifier)
             logging.info('Notifier %s created.', notifier)
         return notifiers
diff --git a/docker_volume_watcher/container_notifier.py b/docker_volume_watcher/container_notifier.py
index 41f7256..c335560 100644
--- a/docker_volume_watcher/container_notifier.py
+++ b/docker_volume_watcher/container_notifier.py
@@ -24,7 +24,7 @@ class ContainerNotifier(object):
     Notifies container about file changes in binded host-directory.
     """
 
-    def __init__(self, container, host_dir, container_dir):
+    def __init__(self, container, host_dir, container_dir, exclude_patterns=None):
         """
         Initialize a new instance of ContainerNotifier
 
@@ -32,12 +32,16 @@ def __init__(self, container, host_dir, container_dir):
             container: Container
             host_dir (str): Host directory
             container_dir (str): Container directory
+            exclude_patterns (list): List of file name patterns for which changes should be ignored
         """
         self.container = container
         self.host_dir = host_dir
         self.container_dir = container_dir
+        exclude_patterns = exclude_patterns if exclude_patterns else []
+
+        event_handler = PatternMatchingEventHandler(
+            ignore_patterns=exclude_patterns, ignore_directories=False)
 
-        event_handler = PatternMatchingEventHandler(ignore_directories=False)
         handler = self.__change_handler
         event_handler.on_created = handler
         event_handler.on_moved = handler