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Specification for Gaurun

Gaurun is a general push notification server. It accepts HTTP requests.

API

Gaurun APIs:

URI and method of each API is fixed.

POST /push

Accepts the HTTP request for push notifications and pushes notifications asynchronously.

The JSON below is the request-body example.

{
    "notifications" : [
        {
            "token" : ["xxx"],
            "platform" : 1,
            "message" : "Hello, iOS!",
            "title": "Greeting",
            "subtitle": "greeting",
            "badge" : 1,
            "category": "category1",
            "sound" : "default",
            "content_available" : false,
            "mutable_content" : false,
            "expiry" : 10,
            "extend" : [{ "key": "url", "val": "..." }, { "key": "intent", "val": "..." }]
        },
        {
            "token" : ["yyy"],
            "platform" : 2,
            "message" : "Hello, Android!",
            "collapse_key" : "update",
            "delay_while_idle" : true,
            "time_to_live" : 10
        }
    ]
}

The request-body must have the notifications array. Table below shows the parameters of each notification:

name type description required default note
token string array device tokens o
platform int platform(iOS, Android) o 1=iOS, 2=Android
message string message for notification o
title string title for notification - only iOS
subtitle string subtitle for notification - only iOS
badge int badge count - 0 only iOS
category string unnotification category - only iOS
sound string sound type - only iOS
expiry int expiration for notification - 0 only iOS.
content_available bool indicate that new content is available - false only iOS.
mutable_content bool enable Notification Service app extension - false only iOS(10.0+).
collapse_key string the key for collapsing notifications - only Android
delay_while_idle bool the flag for device idling - false only Android
time_to_live int expiration of message kept on GCM storage - 0 only Android
extend string array extensible partition -
identifier string notification identifier - an optional value to identify notification

The JSON below is the response-body example from Gaurun. In this case, the status is 200(OK).

{
    "message" : "ok",
}

When Gaurun receives an invalid request(for example: malformed body), the status of response it returns is 400(Bad Request).

GET /stat/go

Returns the statistics for Golang-runtime. See golang-stats-api-handler about details.

GET /stat/app

Returns the statistics for Gaurun. The JSON below is an example:

{
    "queue_max": 8192,
    "queue_usage": 9,
    "pusher_max": 16,
    "pusher_count": 0,
    "ios": {
        "push_success": 2759,
        "push_error": 10
    },
    "android": {
        "push_success": 2985,
        "push_error": 35
    }
}

Table below shows the parameters:

name description note
queue_max size of internal queue for push notification
queue_usage usage of internal queue for push notification
pusher_max maximum number of goroutines for asynchronous pushing
pusher_count current number of goroutines for asynchronous pushing
push_success number of succeeded push notifications
push_error number of failed push notifications

PUT /config/pushers

Adjusts the core.pusher_max. Give the new value of core.pusher_max to PUT /config/pushers with the parameter max like below.

/config/pushers?max=24

Note: Do not give too large value.