def on_cloud_event(message):
logger.debug(message)
logger.debug(Haproxy.cls_linked_services)
try:
event = json.loads(message)
except ValueError:
logger.info("event is not a valid json message")
return
# When service scale up/down or container start/stop/terminate/redeploy, reload the service
if event.get("state", "") not in ["In progress", "Pending", "Terminating", "Starting", "Scaling", "Stopping"] and \
event.get("type", "").lower() in ["container", "service"] and \
len(Haproxy.cls_linked_services.intersection(set(event.get("parents", [])))) > 0:
msg = "Docker Cloud Event: %s %s is %s" % (
event["type"],
get_uuid_from_resource_uri(event.get("resource_uri",
"")), event["state"].lower())
run_haproxy(msg)
# Add/remove services linked to haproxy
if event.get("state",
"") == "Success" and config.HAPROXY_SERVICE_URI in event.get(
"parents", []):
run_haproxy(
"Docker Cloud Event: New action is executed on the Haproxy container"
)
def listen_docker_events():
try:
try:
docker = docker_client()
except:
docker = docker_client(os.environ)
docker.ping()
for event in docker.events(decode=True):
logger.debug(event)
attr = event.get("Actor", {}).get("Attributes")
compose_project = attr.get("com.docker.compose.project", "")
compose_service = attr.get("com.docker.compose.service", "")
container_name = attr.get("name", "")
event_action = event.get("Action", "")
service = "%s_%s" % (compose_project, compose_service)
if service in Haproxy.cls_linked_services and event_action in [
"start", "die"
]:
msg = "Docker event: container %s %s" % (container_name,
event_action)
run_haproxy(msg)
except APIError as e:
logger.info("Docker API error: %s" % e)
def main():
logging.basicConfig(stream=sys.stdout)
logging.getLogger("haproxy").setLevel(logging.DEBUG if DEBUG else logging.INFO)
signal.signal(signal.SIGUSR1, on_user_reload)
signal.signal(signal.SIGTERM, sys.exit)
autoreload = set_autoreload(HAPROXY_CONTAINER_URI, HAPROXY_SERVICE_URI, API_AUTH)
pid = create_pid_file()
logger.info("HAProxy PID: %s" % pid)
if autoreload:
listen_remote_events()
else:
run_haproxy("Initial start")
def listen_docker_events():
try:
docker = docker_client()
docker.ping()
for event in docker.events(decode=True):
logger.debug(event)
attr = event.get("Actor", {}).get("Attributes")
compose_project = attr.get("com.docker.compose.project", "")
compose_service = attr.get("com.docker.compose.service", "")
container_name = attr.get("name", "")
event_action = event.get("Action", "")
service = "%s_%s" % (compose_project, compose_service)
if service in Haproxy.cls_linked_services and event_action in ["start", "die"]:
msg = "Docker event: container %s %s" % (container_name, event_action)
run_haproxy(msg)
except APIError as e:
logger.info("Docker API error: %s" % e)
def main():
logging.basicConfig(stream=sys.stdout)
logging.getLogger("haproxy").setLevel(
logging.DEBUG if DEBUG else logging.INFO)
signal.signal(signal.SIGUSR1, on_user_reload)
signal.signal(signal.SIGTERM, sys.exit)
autoreload = set_autoreload(HAPROXY_CONTAINER_URI, HAPROXY_SERVICE_URI,
API_AUTH)
pid = create_pid_file()
logger.info("HAProxy PID: %s" % pid)
if autoreload:
listen_remote_events()
else:
run_haproxy("Initial start")
def on_cloud_event(message):
logger.debug(message)
logger.debug(Haproxy.cls_linked_services)
try:
event = json.loads(message)
except ValueError:
logger.info("event is not a valid json message")
return
# When service scale up/down or container start/stop/terminate/redeploy, reload the service
if event.get("state", "") not in ["In progress", "Pending", "Terminating", "Starting", "Scaling", "Stopping"] and \
event.get("type", "").lower() in ["container", "service"] and \
len(Haproxy.cls_linked_services.intersection(set(event.get("parents", [])))) > 0:
msg = "Docker Cloud Event: %s %s is %s" % (
event["type"], get_uuid_from_resource_uri(event.get("resource_uri", "")), event["state"].lower())
run_haproxy(msg)
# Add/remove services linked to haproxy
if event.get("state", "") == "Success" and config.HAPROXY_SERVICE_URI in event.get("parents", []):
run_haproxy("Docker Cloud Event: New action is executed on the Haproxy container")
def main():
logging.basicConfig(stream=sys.stdout)
logging.getLogger("haproxy").setLevel(
logging.DEBUG if DEBUG else logging.INFO)
if DEBUG:
logging.getLogger("python-dockercloud").setLevel(logging.DEBUG)
config.LINK_MODE = check_link_mode(HAPROXY_CONTAINER_URI,
HAPROXY_SERVICE_URI, API_AUTH)
gevent.signal(signal.SIGUSR1, on_user_reload)
gevent.signal(signal.SIGTERM, sys.exit)
pid = create_pid_file()
logger.info("dockercloud/haproxy PID: %s" % pid)
if config.LINK_MODE == "cloud":
listen_dockercloud_events()
elif config.LINK_MODE == "new":
run_haproxy("Initial start")
while True:
listen_docker_events()
run_haproxy("Reconnect docker events")
elif config.LINK_MODE == "legacy":
run_haproxy()
def main():
logging.basicConfig(stream=sys.stdout)
logging.getLogger("haproxy").setLevel(logging.DEBUG if DEBUG else logging.INFO)
if DEBUG:
logging.getLogger("python-dockercloud").setLevel(logging.DEBUG)
config.LINK_MODE = check_link_mode(HAPROXY_CONTAINER_URI, HAPROXY_SERVICE_URI, API_AUTH)
signal.signal(signal.SIGUSR1, on_user_reload)
signal.signal(signal.SIGTERM, sys.exit)
pid = create_pid_file()
logger.info("dockercloud/haproxy PID: %s" % pid)
if config.LINK_MODE == "cloud":
listen_dockercloud_events()
elif config.LINK_MODE == "new":
run_haproxy("Initial start")
while True:
listen_docker_events()
run_haproxy("Reconnect docker events")
elif config.LINK_MODE == "legacy":
run_haproxy()
def on_user_reload():
Haproxy.cls_cfg = None
if config.LINK_MODE == "legacy":
logger.info("User reload is not supported in legacy link mode")
else:
run_haproxy("User reload")
def on_websocket_open():
helper.cloud_link_helper.LINKED_CONTAINER_CACHE.clear()
run_haproxy("Websocket open")
def on_user_reload(signum, frame):
run_haproxy("User reload")
def on_websocket_open():
Haproxy.LINKED_CONTAINER_CACHE.clear()
run_haproxy("Websocket open")
def on_user_reload(signum, frame):
run_haproxy("User reload")
def on_websocket_open():
Haproxy.LINKED_CONTAINER_CACHE.clear()
run_haproxy("Websocket open")