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https://issues.apache.org/jira/browse/SOLR-10087?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15849228#comment-15849228
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Dennis Gove commented on SOLR-10087:
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I think this is a good addition.
> StreamHandler should be able to use runtimeLib jars
> ---------------------------------------------------
>
> Key: SOLR-10087
> URL: https://issues.apache.org/jira/browse/SOLR-10087
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Kevin Risden
> Assignee: Kevin Risden
> Priority: Minor
> Attachments: SOLR-10087.patch
>
>
> StreamHandler currently can't uses jars that via the runtimeLib and Blob
> Store api. This is because the StreamHandler uses core.getResourceLoader()
> instead of core.getMemClassLoader() for loading classes.
> An example of this working with the fix is here:
> https://github.com/risdenk/solr_custom_streaming_expressions
> Steps:
> {code}
> # Inspired by
> https://cwiki.apache.org/confluence/display/solr/Adding+Custom+Plugins+in+SolrCloud+Mode
> # Start Solr with enabling Blob Store
> ./bin/solr start -c -f -a "-Denable.runtime.lib=true"
> # Create test collection
> ./bin/solr create -c test
> # Create .system collection
> curl 'http://localhost:8983/solr/admin/collections?action=CREATE&name=.system'
> # Build custom streaming expression jar
> (cd custom-streaming-expression && mvn clean package)
> # Upload jar to .system collection using Blob Store API
> (https://cwiki.apache.org/confluence/display/solr/Blob+Store+API)
> curl -X POST -H 'Content-Type: application/octet-stream' --data-binary
> @custom-streaming-expression/target/custom-streaming-expression-1.0-SNAPSHOT.jar
> 'http://localhost:8983/solr/.system/blob/test'
> # List all blobs that are stored
> curl 'http://localhost:8983/solr/.system/blob?omitHeader=true'
> # Add the jar to the runtime lib
> curl 'http://localhost:8983/solr/test/config' -H
> 'Content-type:application/json' -d '{
> "add-runtimelib": { "name":"test", "version":1 }
> }'
> # Create custom streaming expression using work from SOLR-9103
> # Patch from SOLR-10087 is required for StreamHandler to load the runtimeLib
> jar
> curl 'http://localhost:8983/solr/test/config' -H
> 'Content-type:application/json' -d '{
> "create-expressible": {
> "name": "customstreamingexpression",
> "class": "com.test.solr.CustomStreamingExpression",
> "runtimeLib": true
> }
> }'
> # Test the custom streaming expression
> curl 'http://localhost:8983/solr/test/stream?expr=customstreamingexpression()'
> {code}
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