- Added printouts

- Watching reduced to one file (acme.json)
- added support to restart containers after renewal of certificates

extractor.py

@@ -3,24 +3,29 @@ import os
 import errno
 import time
 import json
+import docker
+
 from base64 import b64decode
 from watchdog.observers import Observer
 from watchdog.events import FileSystemEventHandler
+from pathlib import Path
 
-class Handler(FileSystemEventHandler):
-    def on_created(self, event):
-        self.handle(event)
 
-    def on_modified(self, event):
+def restartContainerWithDomain(domain):
-        self.handle(event)
+    client = docker.from_env()
+    container = client.containers.list(filters = {"label" : "com.github.SnowMB.traefik-certificate-extractor.restart_domain"})
+    for c in container:
+#        print(c.labels['com.github.SnowMB.traefik-certificate-extractor.restart_domain'])
+        domains = str.split(c.labels["com.github.SnowMB.traefik-certificate-extractor.restart_domain"], ',')
+        if domain in domains:
+            print('restarting container ' + c.id)
+            c.restart()
 
-    def handle(self, event):
-        # Check if it's a JSON file
-        if not event.is_directory and event.src_path.endswith('.json'):
-            print('Certificates changed')
 
+
+def createCerts(file):
     # Read JSON file
-            data = json.loads(open(event.src_path).read())
+    data = json.loads(open(file).read())
 
     # Determine ACME version
     acme_version = 2 if 'acme-v02' in data['Account']['Registration']['uri'] else 1
@@ -92,10 +97,42 @@ class Handler(FileSystemEventHandler):
                     f.write(chain)
 
         print('Extracted certificate for: ' + name + (', ' + ', '.join(sans) if sans else ''))
+        restartContainerWithDomain(name)
+
+
+
+
+class Handler(FileSystemEventHandler):
+
+    def __init__(self):
+        self.filename = 'acme.json'
+
+    def on_created(self, event):
+        self.handle(event)
+
+    def on_modified(self, event):
+        self.handle(event)
+
+    def handle(self, event):
+        # Check if it's a JSON file
+        print ('DEBUG : event fired')
+        if not event.is_directory and event.src_path.endswith(self.filename):
+            print('Certificates changed')
+
+            createCerts(event.src_path)
+
 
 if __name__ == "__main__":
     # Determine path to watch
-    path = sys.argv[1] if len(sys.argv) > 1 else './data'
+    val = sys.argv[1] if len(sys.argv) > 1 else './data/acme.json'
+
+    path = Path(val)
+
+    if not path.exists() or path.is_dir():
+        print ('ERROR ' + str(path) + ' does not exist.')
+        sys.exit(1)
+
+    print('watching path: ' + str(path))
 
     # Create output directories if it doesn't exist
     try:
@@ -109,12 +146,15 @@ if __name__ == "__main__":
         if error.errno != errno.EEXIST:
             raise
 
+
+
     # Create event handler and observer
     event_handler = Handler()
+    event_handler.filename = str(path.name)
     observer = Observer()
 
     # Register the directory to watch
-    observer.schedule(event_handler, path)
+    observer.schedule(event_handler, str(path.parent))
 
     # Main loop to watch the directory
     observer.start()

requirements.txt

@@ -1 +1,2 @@
 watchdog
+docker