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Merge pull request #1088 from pbaylas/swag_ondemand_swag_urls

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swag_ondemand mod: Use swag_url label to construct default container urls, if available
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quietsy 2026-02-08 14:00:44 +02:00 committed by GitHub
commit 404f73bf34
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2 changed files with 14 additions and 11 deletions
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4
README.md
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@ -34,7 +34,7 @@ This mod gives SWAG the ability to start containers on-demand when accessed thro
![loading-page](.assets/loading-page.png)
Instead of showing a 502 error page, it can display a loading page and auto-refresh once the container is up.
Add the following `include` to each proxy-conf where you wish to show the loading page inside the `server` section:
```nginx
server {
@ -68,7 +68,7 @@ Or set the following label if using `swag-auto-proxy`:
```
### Labels:
- `swag_ondemand=enable` - required for on-demand.
- `swag_ondemand_urls=https://wake.domain.com,https://app.domain.com/up` - *optional* - overrides the monitored URLs for starting the container on-demand. Defaults to `https://somecontainer.,http://somecontainer.`.
- `swag_ondemand_urls=https://wake.domain.com,https://app.domain.com/up` - *optional* - overrides the monitored URLs for starting the container on-demand. Defaults to using the value of the `swag_url` label, if you've already set it for `swag-auto-proxy`, or `https://somecontainer.,http://somecontainer.` otherwise.
### URLs:
- Accessed URLs need to start with one of `swag_ondemand_urls` to be matched, for example, setting `swag_ondemand_urls=https://plex.` will apply to `https://plex.domain.com` and `https://plex.domain.com/something`.

21
root/app/swag-ondemand.py
View File

@ -20,7 +20,7 @@ class ContainerThread(threading.Thread):
self.daemon = True
self.ondemand_containers = {}
self.init_docker()
def init_docker(self):
try:
docker_host = os.environ.get("DOCKER_HOST", None)
@ -37,20 +37,23 @@ class ContainerThread(threading.Thread):
def process_containers(self):
containers = self.docker_client.containers.list(all=True, filters={ "label": ["swag_ondemand=enable"] })
container_names = {container.name for container in containers}
for container_name in list(self.ondemand_containers.keys()):
if container_name in container_names:
continue
self.ondemand_containers.pop(container_name)
logging.info(f"Stopped monitoring {container_name}")
for container in containers:
container_urls = container.labels.get("swag_ondemand_urls", f"https://{container.name}.,http://{container.name}.")
default_url = container.labels.get("swag_url", f"{container.name}.").rstrip("*")
container_urls = container.labels.get("swag_ondemand_urls", f"https://{default_url},http://{default_url}")
if container.name not in self.ondemand_containers.keys():
last_accessed = datetime.now()
logging.info(f"Started monitoring {container.name}")
logging.info(f"Started monitoring {container.name} for urls: {container_urls}")
else:
last_accessed = self.ondemand_containers[container.name]["last_accessed"]
if container_urls != self.ondemand_containers[container.name]["urls"]:
logging.info(f"Updated urls for {container.name} to: {container_urls}")
self.ondemand_containers[container.name] = { "status": container.status, "urls": container_urls, "last_accessed": last_accessed }
def stop_containers(self):
@ -62,12 +65,12 @@ class ContainerThread(threading.Thread):
continue
self.docker_client.containers.get(container_name).stop()
logging.info(f"Stopped {container_name} after {STOP_THRESHOLD}s of inactivity")
def start_containers(self):
with last_accessed_urls_lock:
last_accessed_urls_combined = ",".join(last_accessed_urls)
last_accessed_urls.clear()
for container_name in self.ondemand_containers.keys():
accessed = False
for ondemand_url in self.ondemand_containers[container_name]["urls"].split(","):
@ -95,7 +98,7 @@ class LogReaderThread(threading.Thread):
def __init__(self):
super().__init__()
self.daemon = True
def tail(self, f):
f.seek(0,2)
inode = os.fstat(f.fileno()).st_ino
@ -143,6 +146,6 @@ if __name__ == "__main__":
ContainerThread().start()
LogReaderThread().start()
while True:
time.sleep(1)