first work on automatic configuration

autoconf/autoconf.py

@@ -0,0 +1,98 @@
+#!/usr/bin/python3
+
+import docker, datetime, subprocess, shutil
+
+def log(event) :
+	print("[" + datetime.datetime.now().replace(microsecond=0) + "] AUTOCONF - " + event)
+
+def replace_in_file(file, old_str, new_str) :
+	with open(file) as f :
+		data = f.read()
+	data = data[::-1].replace(old_str[::-1], new_str[::-1], 1)[::-1]
+	with open(file, "w") as f :
+		f.write(data)
+
+def generate(vars) :
+	subprocess.run(["/opt/entrypoint/site-config.sh", vars["SERVER_NAME"]], env=vars)
+	log("Generated config for " + vars["SERVER_NAME"])
+
+def activate(vars) :
+	replace_in_file("/etc/nginx/nginx.conf", "}", "include /etc/nginx/" + vars["SERVER_NAME"] + "/server.conf;")
+	subprocess.run(["/usr/sbin/nginx", "-s", "reload"])
+	log("Activated config for " + vars["SERVER_NAME"])
+
+def deactivate(vars) :
+	replace_in_file("/etc/nginx/nginx.conf", "include /etc/nginx/" + vars["SERVER_NAME"] + "/server.conf;", "")
+	subprocess.run(["/usr/sbin/nginx", "-s", "reload"])
+	log("Deactivated config for " + vars["SERVER_NAME"])
+
+def remove(vars) :
+	shutil.rmtree("/etc/nginx/" + vars["SERVER_NAME"])
+	log("Removed config for " + vars["SERVER_NAME"])
+
+def process(id, event, vars) :
+	global containers
+	if event == "create" :
+		generate(labels)
+		containers.append(id)
+	elif event == "start" :
+		activate(vars)
+	elif event == "die" :
+		deactivate(vars)
+	elif event == "destroy" :
+		remove(vars)
+		containers.remove(id)
+
+containers = []
+
+client = docker.DockerClient(base_url='unix:///var/run/docker.sock')
+
+# Process containers created before
+for container in client.containers.list(all=True, filters={"label" : "bunkerized-nginx.SERVER_NAME"}) :
+
+	# Extract bunkerized-nginx.* labels
+	labels = container.labels.copy()
+	for label in labels :
+		if not label.startswith("bunkerized-nginx.") :
+			del labels[label]
+	# Remove bunkerized-nginx. on labels
+	vars = { k.replace("bunkerized-nginx.", "", 1) : v for k, v in labels.items()}
+
+	# Container is restarting or running
+	if container.status == "restarting" or container.status == "running" :
+		process(container.id, "create", vars)
+		process(container.id, "activate", vars)
+
+	# Container is created or exited
+	if container.status == "created" or container.status == "exited" :
+		process(container.id, "create", vars)
+
+for event in client.events(decode=True) :
+
+	# Process only container events
+	if event["Type"] != "container" :
+			continue
+
+	# Check if a bunkerized-nginx.* label is present
+	present = False
+	for label in event["Actor"]["Attributes"] :
+			if label.startswith("bunkerized-nginx.") :
+					present = True
+					break
+	if not present :
+			continue
+
+	# Only process if we generated a config
+	if not event["id"] in containers and event["Action"] != "create" :
+			continue
+
+	# Extract bunkerized-nginx.* labels
+	labels = event["Actor"]["Attributes"].copy()
+	for label in labels :
+			if not label.startswith("bunkerized-nginx.") :
+					del labels[label]
+	# Remove bunkerized-nginx. on labels
+	vars = { k.replace("bunkerized-nginx.", "", 1) : v for k, v in labels.items()}
+
+	# Process the event
+	process(event["id"], event["Action"], vars