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https://issues.apache.org/jira/browse/BEAM-6730?focusedWorklogId=213694&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-213694
]
ASF GitHub Bot logged work on BEAM-6730:
----------------------------------------
Author: ASF GitHub Bot
Created on: 15/Mar/19 10:52
Start Date: 15/Mar/19 10:52
Worklog Time Spent: 10m
Work Description: mxm commented on pull request #7875: [BEAM-6730] Expose
Java SDK's GenerateSequence in Python
URL: https://github.com/apache/beam/pull/7875#discussion_r265932733
##########
File path:
sdks/java/core/src/main/java/org/apache/beam/sdk/io/GenerateSequence.java
##########
@@ -98,6 +103,46 @@
abstract GenerateSequence build();
}
+ /** Exposes GenerateSequence as an external transform for cross-language
usage. */
+ @AutoService(ExternalTransformRegistrar.class)
+ public static class External implements ExternalTransformRegistrar {
+
+ @Override
+ public Map<String, Class<? extends ExternalConfigBuilder>> knownBuilders()
{
+ return ImmutableMap.of(
+ "beam:external:java:generate_sequence:v1",
ExternalConfiguration.class);
+ }
+
+ /** Parameters class to expose the transform to an external SDK. */
+ public static class ExternalConfiguration
+ implements ExternalConfigBuilder<PBegin, PCollection<Long>> {
Review comment:
I'll look into that. We cannot implement `ExternalConfigBuilder` directly on
the transform but ideally we would implement it on the existing (non-portable)
builder.
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Issue Time Tracking
-------------------
Worklog Id: (was: 213694)
Time Spent: 7h 40m (was: 7.5h)
> Expose Java transforms (specifically IO) in other SDKs
> ------------------------------------------------------
>
> Key: BEAM-6730
> URL: https://issues.apache.org/jira/browse/BEAM-6730
> Project: Beam
> Issue Type: New Feature
> Components: runner-flink, sdk-java-core, sdk-py-core
> Reporter: Maximilian Michels
> Assignee: Maximilian Michels
> Priority: Major
> Time Spent: 7h 40m
> Remaining Estimate: 0h
>
> Since https://github.com/apache/beam/pull/7316 we can reference external
> transforms which are transforms only available in a "foreign" SDKs. This
> allows us to fill the gap in terms of missing transforms in the Python and Go
> SDK, specifically IO transforms.
> We can start collecting/exposing transforms that Beam users need. The
> following transforms could be interesting:
> - KafkaIO / KinesisIO
> - CassandraIO / ElasticserchIO / Hbase / Redis
> - JDBC
> - S3 file system
> - GenerateSequence
> See also https://s.apache.org/beam-cross-language-io and BEAM-6485.
> CC [~robertwb] [~chamikara] [~thw]
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