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https://issues.apache.org/jira/browse/BEAM-6872?focusedWorklogId=219665&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-219665
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ASF GitHub Bot logged work on BEAM-6872:
----------------------------------------
Author: ASF GitHub Bot
Created on: 27/Mar/19 22:22
Start Date: 27/Mar/19 22:22
Worklog Time Spent: 10m
Work Description: lukecwik commented on pull request #8104: [BEAM-6872]
Add hook for user-defined JVM initialization in workers
URL: https://github.com/apache/beam/pull/8104#discussion_r269794177
##########
File path:
runners/google-cloud-dataflow-java/worker/src/main/java/org/apache/beam/runners/dataflow/worker/DataflowWorkerHarnessHelper.java
##########
@@ -95,6 +97,17 @@ public static void
configureLogging(DataflowWorkerHarnessOptions pipelineOptions
DataflowWorkerLoggingInitializer.configure(pipelineOptions);
}
+ public static void runUserDefinedInitialization() {
+ ServiceLoader<DataflowWorkerInitializer> loader =
+ ServiceLoader.load(DataflowWorkerInitializer.class);
+ for (DataflowWorkerInitializer initializer : loader) {
Review comment:
You should be able to write a test with a Test "initializer" that gets
detected, loaded and performs some detectable side effect. I think there are
several examples for serviceloader tests in the code base already.
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Issue Time Tracking
-------------------
Worklog Id: (was: 219665)
Time Spent: 50m (was: 40m)
> Add hook for user-defined JVM initialization in workers
> -------------------------------------------------------
>
> Key: BEAM-6872
> URL: https://issues.apache.org/jira/browse/BEAM-6872
> Project: Beam
> Issue Type: New Feature
> Components: runner-dataflow
> Reporter: Brian Hulette
> Assignee: Brian Hulette
> Priority: Minor
> Time Spent: 50m
> Remaining Estimate: 0h
>
> Expose an interface for users to run some one-time initialization code when a
> worker starts up.
> This can be useful for things like overriding the Default ZoneRulesProvider,
> or setting up custom SSL providers.
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