Add instructions to deploy pulse service

Signed-off-by: Artem Savchenko <armisav@gmail.com>

.huly.nginx

@@ -118,6 +118,19 @@ server {
         proxy_pass http://stats:4900/;
     }
 
+    #location /_pulse {
+    #    proxy_set_header Host $host;
+    #    proxy_set_header X-Real-IP $remote_addr;
+    #    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    #    proxy_set_header X-Forwarded-Proto $scheme;
+    #
+    #    proxy_http_version 1.1;
+    #    proxy_set_header Upgrade $http_upgrade;
+    #    proxy_set_header Connection "upgrade";
+    #    rewrite ^/_pulse(/.*)$ $1 break;
+    #    proxy_pass http://hulypulse:8099/;
+    #}
+
     #location /_telegram {
     #    proxy_set_header Host $host;
     #    proxy_set_header X-Real-IP $remote_addr;

README.md

@@ -438,6 +438,53 @@ self-hosted Huly, perform the following steps:
 
 Note that the `LIVEKIT_HOST` should include the protocol (`wss://` by default if using livekit cloud).
 
+## HulyPulse (Push / real-time updates)
+
+HulyPulse provides WebSocket push notifications and real-time updates. It requires Redis.
+It will allow the following functions to work:
+- The knock and invite features in video calls
+- Information about who is viewing/editing objects right now
+- Shows that someone is typing a message in a chat.
+
+
+1. Enable Redis and HulyPulse in `compose.yml`:
+   - Uncomment the `redis` service.
+   - Uncomment the `hulypulse` service.
+
+2. Configure the `transactor` service:
+
+    ```yaml
+    transactor:
+      ...
+      environment:
+        - PULSE_URL=http://hulypulse:8099
+      ...
+    ```
+
+3. Configure the `front` service:
+
+    ```yaml
+    front:
+      ...
+      environment:
+        - PULSE_URL=http${SECURE:+s}://${HOST_ADDRESS}/_pulse
+      ...
+    ```
+
+4. Uncomment the `/_pulse` location in `.huly.nginx` and reload nginx:
+
+    ```bash
+    sudo nginx -s reload
+    ```
+
+5. Recreate and start the stack from the `huly-selfhost` folder:
+
+    ```bash
+    docker compose up -d --force-recreate
+    ```
+
+Redis is configured with a 512 MB memory limit by default. For production you may want to set a Redis password and use `HULY_REDIS_URLS=redis://:YOUR_PASSWORD@redis:6379` in the `hulypulse` environment. The image tag uses `HULY_PULSE_VERSION` if set (default `0.1.29`).
+
 ## Print Service
 
 1. Add `print` container to the docker-compose.yaml

compose.yml

@@ -98,6 +98,37 @@ services:
   #     - huly_net
   #   # Required by aibot and calendar services
 
+  # redis:
+  #   image: redis:7-alpine
+  #   container_name: redis
+  #   command: redis-server --maxmemory 512mb --maxmemory-policy allkeys-lru
+  #   restart: unless-stopped
+  #   networks:
+  #     - huly_net
+  #   # Required by HulyPulse (push notifications / real-time updates)
+
+  # hulypulse:
+  #   image: hardcoreeng/service_hulypulse:${HULY_PULSE_VERSION:-0.1.29}
+  #   container_name: hulypulse
+  #   ports:
+  #     - 8099:8099
+  #   environment:
+  #     - HULY_BIND_PORT=8099
+  #     - HULY_LOG=info
+  #     - HULY_TOKEN_SECRET=${SECRET}
+  #     - HULY_HEARTBEAT_TIMEOUT=60
+  #     - HULY_REDIS_MODE=direct
+  #     - HULY_REDIS_URLS=redis://redis:6379
+  #   deploy:
+  #     resources:
+  #       limits:
+  #         memory: 512M
+  #   depends_on:
+  #     - redis
+  #   restart: unless-stopped
+  #   networks:
+  #     - huly_net
+
   rekoni:
     image: hardcoreeng/rekoni-service:${HULY_VERSION}
     environment: