feat(plugin): make graphqlGenerateSDL worker JVM args configurable#2182
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samuelAndalon merged 2 commits intoJun 26, 2026
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GraphQLGenerateSDLTask runs SDL generation in a process-isolated worker
whose forkOptions only set the executable, so the worker uses the Gradle
default heap and cannot be tuned. Large schemas exhaust it and fail with
an OutOfMemoryError, with no supported way to raise the heap.
Add an optional jvmArguments property to the task, applied to the worker
forkOptions, and expose it via the `graphql { schema { } }` DSL. Defaults
to an empty list, so existing behavior is unchanged.
Closes #2181
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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| val generateSchemaTask = project.tasks.named(GENERATE_SDL_TASK_NAME, GraphQLGenerateSDLTask::class.java).get() | ||
| generateSchemaTask.packages.set(supportedPackages) | ||
| generateSchemaTask.jvmArguments.set(extension.schemaExtension.jvmArguments) |
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this will reset graphqlGenerateSDL.jvmArguments to [] whenever users configure:
graphql {
schema {
packages = listOf("com.example")
}
}even if they also configure the task directly:
tasks.named<GraphQLGenerateSDLTask>("graphqlGenerateSDL") {
vmArguments.set(listOf("-Xmx4g"))
}
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Thank you
I updated in this commit
14ab765
…r args Wire the SDL worker jvmArguments from the schema extension via convention() instead of set() so values configured directly on graphqlGenerateSDL are no longer clobbered by the extension default. Log allJvmArgs so managed options such as -Xmx (stored as maxHeapSize, absent from jvmArgs) are visible. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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May you take a look for this @Samjin 🙇 |
samuelAndalon
approved these changes
Jun 26, 2026
This was referenced Jul 1, 2026
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📝 Description
GraphQLGenerateSDLTaskruns SDL generation in a process-isolated worker (workerExecutor.processIsolation), but the worker'sforkOptionsonly set the executable — there is no way to configure its heap or any other JVM argument. The worker therefore runs with the Gradle default heap, and large schemas exhaust it and fail withjava.lang.OutOfMemoryError: Java heap spacewith no supported workaround.This PR adds an optional
jvmArgumentsproperty toGraphQLGenerateSDLTask, applies it to the worker'sforkOptions, and exposes it through thegraphql { schema { } }DSL (and the--jvm-argsCLI option).graphql { schema { packages = listOf("com.example") jvmArguments = listOf("-Xmx2g") } }It defaults to an empty list, so existing builds are unaffected.
Closes #2181
🔗 Related Issues
Closes #2181
✅ Checklist
GraphQLGenerateSDLTaskTest: default value + DSL → task propagation)gradle-plugin-tasks.mdx,gradle-plugin-usage-sdl.mdx)./gradlew :graphql-kotlin-gradle-plugin:check ktlintCheck detektpass locallyjvmArgumentsis unset)🤖 Generated with Claude Code