General

This project demonstrates the tracking of scheduled jobs using Spring AOP.

The tracking is fairly simple. The ScheduledJobTrackingAspect invokes every method with an Scheduled annotation and writes the start and end of the method into the ScheduledJobTracker. A UUID is assigned to the job upon start, since a single job can run multiple times at once.

The data is available via ScheduledJobController.

This is just a project demonstrating the tracking. I am considering to build a library that can be included in any spring boot project to enable tracking of scheduled tasks.

Sample scheduled job

The demo has a very simple scheduled job, that prints foo every 5 seconds.

package com.example.demo

import org.springframework.scheduling.annotation.Scheduled
import org.springframework.stereotype.Component

@Component
class ScheduledJob {

    @Scheduled(fixedRate = 5000)
    fun println() = println("foo")

}

Access data via REST

GET /scheduled-jobs/

[
  {
    "className": "com.example.demo.ScheduledJob",
    "methodName": "println",
    "fixedRate": 5000,
    "runs": [
      {
        "uuid": "c5ca5c73-f1f6-4ced-a911-de0e43a78d78",
        "startedAt": "2018-05-15T23:38:11.177Z",
        "endedAt": "2018-05-15T23:38:11.182Z",
        "exception": null,
        "duration": "PT0.005S"
      },
      {
        "uuid": "2dd54fc3-8753-41c1-91d2-a7ec33fda0e8",
        "startedAt": "2018-05-15T23:38:16.169Z",
        "endedAt": "2018-05-15T23:38:16.169Z",
        "exception": null,
        "duration": "PT0S"
      },
      {
        "uuid": "6be5d3ad-924e-4aa6-aef8-a4b837b3e67f",
        "startedAt": "2018-05-15T23:38:21.170Z",
        "endedAt": "2018-05-15T23:38:21.170Z",
        "exception": null,
        "duration": "PT0S"
      },
      {
        "uuid": "72dc2d85-d2f1-4875-9381-3d26f6c6512c",
        "startedAt": "2018-05-15T23:38:26.169Z",
        "endedAt": "2018-05-15T23:38:26.169Z",
        "exception": null,
        "duration": "PT0S"
      },
      {
        "uuid": "e4f635ee-625b-4618-84ee-0cb0c2aa210e",
        "startedAt": "2018-05-15T23:38:31.169Z",
        "endedAt": "2018-05-15T23:38:31.169Z",
        "exception": null,
        "duration": "PT0S"
      }
    ],
    "status": "Idle",
    "averageDurationInMs": 1,
    "lastDurationInMs": 0,
    "lastRunStarted": "2018-05-15T23:38:31.169Z",
    "lastRunEnded": "2018-05-15T23:38:31.169Z"
  }
]