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https://issues.apache.org/jira/browse/BEAM-6857?focusedWorklogId=369415&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-369415
]
ASF GitHub Bot logged work on BEAM-6857:
----------------------------------------
Author: ASF GitHub Bot
Created on: 09/Jan/20 22:21
Start Date: 09/Jan/20 22:21
Worklog Time Spent: 10m
Work Description: reuvenlax commented on pull request #10316: [BEAM-6857]
Support Dynamic Timers
URL: https://github.com/apache/beam/pull/10316#discussion_r364930284
##########
File path:
sdks/java/core/src/test/java/org/apache/beam/sdk/transforms/ParDoTest.java
##########
@@ -4288,4 +4289,51 @@ public void onTimer(OutputReceiver<String> r,
@TimerId("timer") Timer timer) {
r.output("It works");
}
}
+
+ /** Tests to validate ParDo timerFamily. */
+ @RunWith(JUnit4.class)
+ public static class TimerFamilyTests extends SharedTestBase implements
Serializable {
+
+ @Test
+ @Category({NeedsRunner.class, UsesTimersInParDo.class,
UsesTestStream.class})
+ public void testTimerFamilyEventTime() throws Exception {
+ final String timerFamilyId = "foo";
+
+ DoFn<KV<String, Integer>, String> fn =
+ new DoFn<KV<String, Integer>, String>() {
+
+ @TimerFamily(timerFamilyId)
+ private final TimerSpec spec =
TimerSpecs.timerMap(TimeDomain.EVENT_TIME);
+
+ @ProcessElement
+ public void processElement(
+ @TimerFamily(timerFamilyId) TimerMap timers,
OutputReceiver<String> r) {
+ timers.set("timer1", new Instant(1));
Review comment:
Test setting two timers with the same id but different timer families.
Test processing time timers.
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Issue Time Tracking
-------------------
Worklog Id: (was: 369415)
Time Spent: 12h 10m (was: 12h)
> Support dynamic timers
> ----------------------
>
> Key: BEAM-6857
> URL: https://issues.apache.org/jira/browse/BEAM-6857
> Project: Beam
> Issue Type: Bug
> Components: sdk-java-core
> Reporter: Reuven Lax
> Assignee: Shehzaad Nakhoda
> Priority: Major
> Time Spent: 12h 10m
> Remaining Estimate: 0h
>
> The Beam timers API currently requires each timer to be statically specified
> in the DoFn. The user must provide a separate callback method per timer. For
> example:
>
> {code:java}
> DoFn<String, String>()
> {
> @TimerId("timer1")
> private final TimerSpec timer1 = TimerSpecs.timer(...);
> @TimerId("timer2")
> private final TimerSpec timer2 = TimerSpecs.timer(...);
> ...... set timers in processElement
> @OnTimer("timer1")
> public void onTimer1() { .....}
> @OnTimer("timer2")
> public void onTimer2() {....}
> }
> {code}
>
> However there are many cases where the user does not know the set of timers
> statically when writing their code. This happens when the timer tag should be
> based on the data. It also happens when writing a DSL on top of Beam, where
> the DSL author has to create DoFns but does not know statically which timers
> their users will want to set (e.g. Scio).
>
> The goal is to support dynamic timers. Something as follows;
>
> {code:java}
> DoFn<String, String>()
> {
> @TimerId("timer")
> private final TimerSpec timer1 = TimerSpecs.dynamicTimer(...);
> @ProcessElement process(@TimerId("timer") DynamicTimer timer)
> {
> timer.set("tag1'", ts);
> timer.set("tag2", ts);
> }
> @OnTimer("timer")
> public void onTimer1(@TimerTag String tag) { .....}
> }
> {code}
>
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