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Merge pull request #77 from quarkiverse/opentelemetry
Add initial OpenTelemetry support for declarative services
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86 changes: 86 additions & 0 deletions
86
core/runtime/src/main/java/io/quarkiverse/langchain4j/runtime/aiservice/SpanWrapper.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,86 @@ | ||
| package io.quarkiverse.langchain4j.runtime.aiservice; | ||
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| import java.util.Optional; | ||
| import java.util.function.Function; | ||
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| import jakarta.inject.Inject; | ||
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| import io.opentelemetry.api.OpenTelemetry; | ||
| import io.opentelemetry.api.trace.SpanKind; | ||
| import io.opentelemetry.context.Context; | ||
| import io.opentelemetry.context.Scope; | ||
| import io.opentelemetry.instrumentation.api.instrumenter.Instrumenter; | ||
| import io.opentelemetry.instrumentation.api.instrumenter.InstrumenterBuilder; | ||
| import io.opentelemetry.instrumentation.api.instrumenter.SpanKindExtractor; | ||
| import io.opentelemetry.instrumentation.api.instrumenter.SpanNameExtractor; | ||
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| public class SpanWrapper implements AiServiceMethodImplementationSupport.Wrapper { | ||
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| private static final String INSTRUMENTATION_NAME = "io.quarkus.opentelemetry"; | ||
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| private final Instrumenter<AiServiceMethodImplementationSupport.Input, Void> instrumenter; | ||
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| @Inject | ||
| public SpanWrapper(OpenTelemetry openTelemetry) { | ||
| InstrumenterBuilder<AiServiceMethodImplementationSupport.Input, Void> builder = Instrumenter.builder( | ||
| openTelemetry, | ||
| INSTRUMENTATION_NAME, | ||
| InputSpanNameExtractor.INSTANCE); | ||
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| // TODO: there is probably more information here we need to set | ||
| this.instrumenter = builder | ||
| .buildInstrumenter(new SpanKindExtractor<>() { | ||
| @Override | ||
| public SpanKind extract(AiServiceMethodImplementationSupport.Input input) { | ||
| return SpanKind.INTERNAL; | ||
| } | ||
| }); | ||
| } | ||
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| @Override | ||
| public Object wrap(AiServiceMethodImplementationSupport.Input input, | ||
| Function<AiServiceMethodImplementationSupport.Input, Object> fun) { | ||
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| Context parentContext = Context.current(); | ||
| Context spanContext = null; | ||
| Scope scope = null; | ||
| boolean shouldStart = instrumenter.shouldStart(parentContext, input); | ||
| if (shouldStart) { | ||
| spanContext = instrumenter.start(parentContext, input); | ||
| scope = spanContext.makeCurrent(); | ||
| } | ||
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| try { | ||
| Object result = fun.apply(input); | ||
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| if (shouldStart) { | ||
| instrumenter.end(spanContext, input, null, null); | ||
| } | ||
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| return result; | ||
| } catch (Throwable t) { | ||
| if (shouldStart) { | ||
| instrumenter.end(spanContext, input, null, t); | ||
| } | ||
| throw t; | ||
| } finally { | ||
| if (scope != null) { | ||
| scope.close(); | ||
| } | ||
| } | ||
| } | ||
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| private static class InputSpanNameExtractor implements SpanNameExtractor<AiServiceMethodImplementationSupport.Input> { | ||
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| private static final InputSpanNameExtractor INSTANCE = new InputSpanNameExtractor(); | ||
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| @Override | ||
| public String extract(AiServiceMethodImplementationSupport.Input input) { | ||
| Optional<AiServiceMethodCreateInfo.SpanInfo> spanInfoOpt = input.createInfo.getSpanInfo(); | ||
| if (spanInfoOpt.isPresent()) { | ||
| return spanInfoOpt.get().getName(); | ||
| } | ||
| return null; | ||
| } | ||
| } | ||
| } |
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