OneApplicationResource — applications/appId URI Handler

OneApplicationResource is a AbstractApplicationResource (and so a ApiRequestContext indirectly) that ApiRootResource uses to handle applications/appId URI path.

Table 1. OneApplicationResource’s Paths
Path HTTP Method Description

/

GET

getApp

// start spark-shell
// there should be a single Spark application -- the spark-shell itself
$ http http://localhost:4040/api/v1/applications
HTTP/1.1 200 OK
Content-Encoding: gzip
Content-Length: 255
Content-Type: application/json
Date: Wed, 06 Jun 2018 12:40:33 GMT
Server: Jetty(9.3.z-SNAPSHOT)
Vary: Accept-Encoding, User-Agent

[
    {
        "attempts": [
            {
                "appSparkVersion": "2.3.1-SNAPSHOT",
                "completed": false,
                "duration": 0,
                "endTime": "1969-12-31T23:59:59.999GMT",
                "endTimeEpoch": -1,
                "lastUpdated": "2018-06-06T12:30:19.220GMT",
                "lastUpdatedEpoch": 1528288219220,
                "sparkUser": "jacek",
                "startTime": "2018-06-06T12:30:19.220GMT",
                "startTimeEpoch": 1528288219220
            }
        ],
        "id": "local-1528288219790",
        "name": "Spark shell"
    }
]

$ http http://localhost:4040/api/v1/applications/local-1528288219790
HTTP/1.1 200 OK
Content-Encoding: gzip
Content-Length: 255
Content-Type: application/json
Date: Wed, 06 Jun 2018 12:41:43 GMT
Server: Jetty(9.3.z-SNAPSHOT)
Vary: Accept-Encoding, User-Agent

{
    "attempts": [
        {
            "appSparkVersion": "2.3.1-SNAPSHOT",
            "completed": false,
            "duration": 0,
            "endTime": "1969-12-31T23:59:59.999GMT",
            "endTimeEpoch": -1,
            "lastUpdated": "2018-06-06T12:30:19.220GMT",
            "lastUpdatedEpoch": 1528288219220,
            "sparkUser": "jacek",
            "startTime": "2018-06-06T12:30:19.220GMT",
            "startTimeEpoch": 1528288219220
        }
    ],
    "id": "local-1528288219790",
    "name": "Spark shell"
}

getApp Method

getApp(): ApplicationInfo

getApp requests the UIRoot for the application info (given the appId).

In the end, getApp returns the ApplicationInfo if available or reports a NotFoundException:

unknown app: [appId]

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