Open Distro for Elasticsearch Job Scheduler

Open Distro for Elasticsearch JobScheduler plugin provides a framework for Elasticsearch plugin
developers to schedule periodical jobs running within Elasticsearch nodes. You can schedule jobs
by specify an interval, or using Unix Cron expression to define more flexible schedule to execute
your job.

Elasticsearch plugin developers can easily extend JobScheduler plugin to schedule jobs like running
aggregation query against raw data and save the aggregated data into a new index every hour, or keep
monitoring the shard allocation by calling Elasticsearch API and post the output to a Webhook.

Build

The JobScheduler plugin uses the Gradle
build system.

1. Checkout this package from version control.
2. To build from command line set JAVA_HOME to point to a JDK >=14
3. Run ./gradlew build

Then you will find the built artifact located at build/distributions directory

Install

Once you have built the plugin from source code, run

elasticsearch-plugin install file://${PLUGIN_ZIP_FILE_PATH}

to install the JobScheduler plugin to your Elasticsearch.

Develop a plugin that extends JobScheduler

JobScheduler plugin provides a SPI for other plugins to implement. Essentially, you need to

1. Define your JobParameter type by implementing ScheduledJobParameter interface
2. Implement your JobParameter parser function that can deserialize your JobParameter from XContent
3. Create your JobRunner implementation by implementing ScheduledJobRunner interface
4. Create your own plugin which implements JobSchedulerExtension interface
   • don’t forget to create the service provider configuration file in your resources folder and
     bundle it into your plugin artifact

Please refer to the sample-extension-plugin subproject in this project, which provides a complete
example of using JobScheduler to run periodical jobs.

The sample extension plugin takes an index name as input and logs the index shards to elasticsearch
logs according to the specified Schedule. And it also exposes a REST endpoint for end users to
create/delete jobs.

Code of Conduct

This project has adopted an Open Source Code of Conduct.

Security issue notifications

If you discover a potential security issue in this project we ask that you notify AWS/Amazon Security via our vulnerability reporting page. Please do not create a public GitHub issue.

Licensing

See the LICENSE file for our project’s licensing. We will ask you to confirm the licensing of your contribution.