beaver

💨 A real time messaging system to build a scalable in-app notifications, multiplayer games, chat apps in web and mobile apps.

Description

A Real Time Messaging Server.

Beaver is a real-time messaging server. With beaver you can easily build scalable in-app notifications, realtime graphs, multiplayer games, chat applications, geotracking and more in web applications and mobile apps.

Programming language: Go

License: MIT License

Tags: Tools     Framework     Golang    

README

Beaver A Real Time Messaging Server.

Beaver is a real-time messaging server. With beaver you can easily build scalable in-app notifications, realtime graphs, multiplayer games, chat applications, geotracking and more in web applications and mobile apps.

Documentation

Run Beaver on Ubuntu

Download the latest beaver binary. Make it executable from everywhere.

$ export BEAVER_LATEST_VERSION=$(curl --silent "https://api.github.com/repos/Clivern/Beaver/releases/latest" | jq '.tag_name' | sed -E 's/.*"([^"]+)".*/\1/' | tr -d v)

$ curl -sL https://github.com/Clivern/Beaver/releases/download/v{$BEAVER_LATEST_VERSION}/beaver_{$BEAVER_LATEST_VERSION}_Linux_x86_64.tar.gz | tar xz

Then install redis cluster or a single node. Update the following config file with redis configs.

Create the configs file config.yml from config.dist.yml. Something like the following:

# App configs
app:
    # Env mode (dev or prod)
    mode: ${BEAVER_APP_MODE:-prod}
    # HTTP port
    port: ${BEAVER_API_PORT:-8080}
    # Hostname
    hostname: ${BEAVER_API_HOSTNAME:-127.0.0.1}
    # TLS configs
    tls:
        status: ${BEAVER_API_TLS_STATUS:-off}
        pemPath: ${BEAVER_API_TLS_PEMPATH:-cert/server.pem}
        keyPath: ${BEAVER_API_TLS_KEYPATH:-cert/server.key}

    # API Configs
    api:
        key: ${BEAVER_API_KEY:-6c68b836-6f8e-465e-b59f-89c1db53afca}

    # Beaver Secret
    secret: ${BEAVER_SECRET:-sWUhHRcs4Aqa0MEnYwbuQln3EW8CZ0oD}

    # Runtime, Requests/Response and Beaver Metrics
    metrics:
        prometheus:
            # Route for the metrics endpoint
            endpoint: ${BEAVER_METRICS_PROM_ENDPOINT:-/metrics}

    # Application Database
    database:
        # Database driver
        driver: ${BEAVER_DB_DRIVER:-redis}

        # Redis Configs
        redis:
            # Redis address
            address: ${BEAVER_DB_REDIS_ADDR:-localhost:6379}
            # Redis password
            password: ${BEAVER_DB_REDIS_PASSWORD:- }
            # Redis database
            db: ${BEAVER_DB_REDIS_DB:-0}

    # Log configs
    log:
        # Log level, it can be debug, info, warn, error, panic, fatal
        level: ${BEAVER_LOG_LEVEL:-info}
        # Output can be stdout or abs path to log file /var/logs/beaver.log
        output: ${BEAVER_LOG_OUTPUT:-stdout}
        # Format can be json
        format: ${BEAVER_LOG_FORMAT:-json}

The run the beaver with systemd

$ beaver api -c /path/to/config.yml

API Endpoints

Create a Config app_name:

$ curl -X POST \
    -H "Content-Type: application/json" \
    -H "X-API-Key: 6c68b836-6f8e-465e-b59f-89c1db53afca" \
    -d '{"key":"app_name","value":"Beaver"}' \
    "http://localhost:8080/api/config"

Get a Config app_name:

$ curl -X GET \
    -H "Content-Type: application/json" \
    -H "X-API-Key: 6c68b836-6f8e-465e-b59f-89c1db53afca" \
    "http://localhost:8080/api/config/app_name"

{"key":"app_name","value":"Beaver"}

Update a Config app_name:

$ curl -X PUT \
    -H "Content-Type: application/json" \
    -H "X-API-Key: 6c68b836-6f8e-465e-b59f-89c1db53afca" \
    -d '{"value":"Beaver"}' \
    "http://localhost:8080/api/config/app_name"

Delete a Config app_name:

$ curl -X DELETE \
    -H "Content-Type: application/json" \
    -H "X-API-Key: 6c68b836-6f8e-465e-b59f-89c1db53afca" \
    "http://localhost:8080/api/config/app_name"

Create a Channel:

# Private Channel
$ curl -X POST \
    -H 'Content-Type: application/json' \
    -H 'X-API-Key: 6c68b836-6f8e-465e-b59f-89c1db53afca' \
    -d '{"name": "app_x_chatroom_1", "type": "private"}' \
    'http://localhost:8080/api/channel'

# Public Channel
$ curl -X POST \
    -H 'Content-Type: application/json' \
    -H 'X-API-Key: 6c68b836-6f8e-465e-b59f-89c1db53afca' \
    -d '{"name": "app_y_chatroom_1", "type": "public"}' \
    'http://localhost:8080/api/channel'

# Presence Channel
$ curl -X POST \
    -H 'Content-Type: application/json' \
    -H 'X-API-Key: 6c68b836-6f8e-465e-b59f-89c1db53afca' \
    -d '{"name": "app_z_chatroom_5", "type": "presence"}' \
    'http://localhost:8080/api/channel'

Get a Channel:

$ curl -X GET \
    -H 'Content-Type: application/json' \
    -H 'X-API-Key: 6c68b836-6f8e-465e-b59f-89c1db53afca' \
    -d '' \
    'http://localhost:8080/api/channel/app_x_chatroom_1'
{
    "created_at":1545573214,
    "listeners_count":0,
    "name":"app_x_chatroom_1",
    "subscribers_count":0,
    "type":"private",
    "updated_at":1545573214
}

$ curl -X GET \
    -H 'Content-Type: application/json' \
    -H 'X-API-Key: 6c68b836-6f8e-465e-b59f-89c1db53afca' \
    -d '' \
    'http://localhost:8080/api/channel/app_y_chatroom_1'
{
    "created_at":1545573219,
    "listeners_count":0,
    "name":"app_y_chatroom_1",
    "subscribers_count":0,
    "type":"public",
    "updated_at":1545573219
}

$ curl -X GET \
    -H 'Content-Type: application/json' \
    -H 'X-API-Key: 6c68b836-6f8e-465e-b59f-89c1db53afca' \
    -d '' \
    'http://localhost:8080/api/channel/app_z_chatroom_5'
{
    "created_at": 1545573225,
    "listeners": null,
    "listeners_count": 0,
    "name": "app_z_chatroom_5",
    "subscribers": null,
    "subscribers_count": 0,
    "type": "presence",
    "updated_at": 1545573225
}

Update a Channel app_y_chatroom_1:

$ curl -X PUT \
    -H 'Content-Type: application/json' \
    -H 'X-API-Key: 6c68b836-6f8e-465e-b59f-89c1db53afca' \
    -d '{"type": "private"}' \
    'http://localhost:8080/api/channel/app_y_chatroom_1'

Delete a Channel app_y_chatroom_1:

$ curl -X DELETE \
    -H 'Content-Type: application/json' \
    -H 'X-API-Key: 6c68b836-6f8e-465e-b59f-89c1db53afca' \
    -d '' \
    'http://localhost:8080/api/channel/app_y_chatroom_1'

Create a Client and add to app_x_chatroom_1 Channel:

$ curl -X POST \
    -H 'Content-Type: application/json' \
    -H 'X-API-Key: 6c68b836-6f8e-465e-b59f-89c1db53afca' \
    -d '{"channels": ["app_x_chatroom_1"]}' \
    'http://localhost:8080/api/client'
{
    "channels": [
        "app_x_chatroom_1"
    ],
    "created_at": 1545575142,
    "id": "69775af3-5f68-4725-8162-09cab63e8427",
    "token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJkYXRhIjoiNjk3NzVhZjMtNWY2OC00NzI1LTgxNjItMDljYWI2M2U4NDI3QDE1NDU1NzUxNDIiLCJ0aW1lc3RhbXAiOjE1NDU1NzUxNDJ9.EqL-nWwu5p7hJXWrKdZN3Ds2cxWVjNYmeP1mbl562nU",
    "updated_at": 1545575142
}

Get a Client 69775af3-5f68-4725-8162-09cab63e8427:

$ curl -X GET \
    -H 'Content-Type: application/json' \
    -H 'X-API-Key: 6c68b836-6f8e-465e-b59f-89c1db53afca' \
    -d '' \
    'http://localhost:8080/api/client/69775af3-5f68-4725-8162-09cab63e8427'
{
    "channels": [
        "app_x_chatroom_1"
    ],
    "created_at": 1545575142,
    "id": "69775af3-5f68-4725-8162-09cab63e8427",
    "token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJkYXRhIjoiNjk3NzVhZjMtNWY2OC00NzI1LTgxNjItMDljYWI2M2U4NDI3QDE1NDU1NzUxNDIiLCJ0aW1lc3RhbXAiOjE1NDU1NzUxNDJ9.EqL-nWwu5p7hJXWrKdZN3Ds2cxWVjNYmeP1mbl562nU",
    "updated_at": 1545575142
}

Subscribe a Client 69775af3-5f68-4725-8162-09cab63e8427 to a Channel app_z_chatroom_5:

$ curl -X PUT \
    -H 'Content-Type: application/json' \
    -H 'X-API-Key: 6c68b836-6f8e-465e-b59f-89c1db53afca' \
    -d '{"channels": ["app_z_chatroom_5"]}' \
    'http://localhost:8080/api/client/69775af3-5f68-4725-8162-09cab63e8427/subscribe'

Unsubscribe a Client 69775af3-5f68-4725-8162-09cab63e8427 from a Channel app_z_chatroom_5:

$ curl -X PUT \
    -H 'Content-Type: application/json' \
    -H 'X-API-Key: 6c68b836-6f8e-465e-b59f-89c1db53afca' \
    -d '{"channels": ["app_z_chatroom_5"]}' \
    'http://localhost:8080/api/client/69775af3-5f68-4725-8162-09cab63e8427/unsubscribe'

Delete a Client:

$ curl -X DELETE \
    -H 'Content-Type: application/json' \
    -H 'X-API-Key: 6c68b836-6f8e-465e-b59f-89c1db53afca' \
    -d '' \
    'http://localhost:8080/api/client/69775af3-5f68-4725-8162-09cab63e8427'

Publish to a Channel app_x_chatroom_1:

$ curl -X POST \
    -H 'Content-Type: application/json' \
    -H 'X-API-Key: 6c68b836-6f8e-465e-b59f-89c1db53afca' \
    -d '{"channel": "app_x_chatroom_1", "data": "{\"message\": \"Hello World\"}"}' \
    'http://localhost:8080/api/publish'

Broadcast to Channels ["app_x_chatroom_1"]:

$ curl -X POST \
    -H 'Content-Type: application/json' \
    -H 'X-API-Key: 6c68b836-6f8e-465e-b59f-89c1db53afca' \
    -d '{"channels": ["app_x_chatroom_1"], "data": "{\"message\": \"Hello World\"}"}' \
    'http://localhost:8080/api/broadcast'

Sample Frontend Client

function Socket(url){
    ws = new WebSocket(url);
    ws.onmessage = function(e) { console.log(e); };
    ws.onclose = function(){
        // Try to reconnect in 5 seconds
        setTimeout(function(){Socket(url)}, 5000);
    };
}

Socket("ws://localhost:8080/ws/$ID/$TOKEN");

Client:

• Go Client Thanks @domgolonka

Versioning

For transparency into our release cycle and in striving to maintain backward compatibility, Beaver is maintained under the Semantic Versioning guidelines and release process is predictable and business-friendly.

See the Releases section of our GitHub project for changelogs for each release version of Beaver. It contains summaries of the most noteworthy changes made in each release.

Bug tracker

If you have any suggestions, bug reports, or annoyances please report them to our issue tracker at https://github.com/clivern/beaver/issues

Security Issues

If you discover a security vulnerability within Beaver, please send an email to [email protected]

Contributing

We are an open source, community-driven project so please feel free to join us. see the [contributing guidelines](CONTRIBUTING.md) for more details.

License

© 2018, Clivern. Released under MIT License.

Beaver is authored and maintained by @Clivern.