io.micrometer.tracing.test.reporter.zipkin.ZipkinBraveSetup Maven / Gradle / Ivy
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/**
* Copyright 2022 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.micrometer.tracing.test.reporter.zipkin;
import brave.Tracing;
import brave.http.HttpTracing;
import brave.propagation.ThreadLocalCurrentTraceContext;
import brave.sampler.Sampler;
import brave.test.TestSpanHandler;
import io.micrometer.observation.Observation;
import io.micrometer.observation.ObservationHandler;
import io.micrometer.observation.ObservationRegistry;
import io.micrometer.tracing.Tracer;
import io.micrometer.tracing.brave.bridge.*;
import io.micrometer.tracing.exporter.FinishedSpan;
import io.micrometer.tracing.handler.DefaultTracingObservationHandler;
import io.micrometer.tracing.handler.PropagatingReceiverTracingObservationHandler;
import io.micrometer.tracing.handler.PropagatingSenderTracingObservationHandler;
import io.micrometer.tracing.propagation.Propagator;
import io.micrometer.tracing.test.reporter.BuildingBlocks;
import zipkin2.reporter.BytesMessageSender;
import zipkin2.reporter.brave.AsyncZipkinSpanHandler;
import zipkin2.reporter.urlconnection.URLConnectionSender;
import java.util.Deque;
import java.util.LinkedList;
import java.util.List;
import java.util.function.BiConsumer;
import java.util.function.Consumer;
import java.util.function.Function;
import java.util.function.Supplier;
import java.util.stream.Collectors;
/**
* Provides Zipkin setup with Brave.
*
* @author Marcin Grzejszczak
* @since 1.0.0
*/
public final class ZipkinBraveSetup implements AutoCloseable {
private final Consumer closingFunction;
private final Builder.BraveBuildingBlocks braveBuildingBlocks;
ZipkinBraveSetup(Consumer closingFunction,
Builder.BraveBuildingBlocks braveBuildingBlocks) {
this.closingFunction = closingFunction;
this.braveBuildingBlocks = braveBuildingBlocks;
}
@Override
public void close() {
this.closingFunction.accept(this.braveBuildingBlocks);
}
/**
* @return all the Brave building blocks required to communicate with Zipkin
*/
public Builder.BraveBuildingBlocks getBuildingBlocks() {
return this.braveBuildingBlocks;
}
/**
* @return builder for the {@link ZipkinBraveSetup}
*/
public static ZipkinBraveSetup.Builder builder() {
return new ZipkinBraveSetup.Builder();
}
/**
* Builder for Brave with Zipkin.
*/
public static class Builder {
private String applicationName = "observability-test";
private String zipkinUrl = "http://localhost:9411";
private Supplier sender;
private Function spanHandler;
private Function tracing;
private Function tracer;
private Function httpTracing;
private Function> handlers;
private BiConsumer>> customizers;
private Consumer closingFunction;
/**
* All Brave building blocks required to communicate with Zipkin.
*/
public static class BraveBuildingBlocks implements BuildingBlocks {
private final BytesMessageSender sender;
private final AsyncZipkinSpanHandler spanHandler;
private final Tracing tracing;
private final Tracer tracer;
private final BravePropagator propagator;
private final HttpTracing httpTracing;
private final BiConsumer>> customizers;
private final TestSpanHandler testSpanHandler;
/**
* Creates a new instance of {@link BraveBuildingBlocks}.
* @param sender sender
* @param spanHandler spanHandler
* @param tracing tracing
* @param tracer tracer
* @param propagator propagator
* @param httpTracing http tracing
* @param customizers observation handler customizers
* @param testSpanHandler test span handler
*/
public BraveBuildingBlocks(BytesMessageSender sender, AsyncZipkinSpanHandler spanHandler, Tracing tracing,
Tracer tracer, BravePropagator propagator, HttpTracing httpTracing,
BiConsumer>> customizers,
TestSpanHandler testSpanHandler) {
this.sender = sender;
this.spanHandler = spanHandler;
this.tracing = tracing;
this.tracer = tracer;
this.propagator = propagator;
this.httpTracing = httpTracing;
this.customizers = customizers;
this.testSpanHandler = testSpanHandler;
}
/**
* Returns the sender.
* @return sender
*/
public BytesMessageSender getSender() {
return sender;
}
@Override
public Tracer getTracer() {
return this.tracer;
}
@Override
public Propagator getPropagator() {
return this.propagator;
}
@Override
public BiConsumer>> getCustomizers() {
return this.customizers;
}
@Override
public List getFinishedSpans() {
return this.testSpanHandler.spans()
.stream()
.map(BraveFinishedSpan::fromBrave)
.collect(Collectors.toList());
}
}
/**
* Overrides the application name.
* @param applicationName name of the application
* @return this for chaining
*/
public Builder applicationName(String applicationName) {
this.applicationName = applicationName;
return this;
}
/**
* Overrides the Zipkin URL.
* @param zipkinUrl zipkin URL
* @return this for chaining
*/
public Builder zipkinUrl(String zipkinUrl) {
this.zipkinUrl = zipkinUrl;
return this;
}
/**
* Overrides sender.
* @param sender sender provider
* @return this for chaining
*/
public Builder sender(Supplier sender) {
this.sender = sender;
return this;
}
/**
* Overrides spanHandler.
* @param spanHandler spanHandler provider
* @return this for chaining
*/
public Builder spanHandler(Function spanHandler) {
this.spanHandler = spanHandler;
return this;
}
/**
* Overrides Tracing.
* @param tracing tracing provider
* @return this for chaining
*/
public Builder tracing(Function tracing) {
this.tracing = tracing;
return this;
}
/**
* Overrides Tracer.
* @param tracer tracer provider
* @return this for chaining
*/
public Builder tracer(Function tracer) {
this.tracer = tracer;
return this;
}
/**
* Overrides Http Tracing.
* @param httpTracing http tracing provider
* @return this for chaining
*/
public Builder httpTracing(Function httpTracing) {
this.httpTracing = httpTracing;
return this;
}
/**
* Allows customization of Observation Handlers.
* @param customizers customization provider
* @return this for chaining
*/
public Builder observationHandlerCustomizer(
BiConsumer>> customizers) {
this.customizers = customizers;
return this;
}
/**
* Overrides Observation Handlers
* @param handlers handlers provider
* @return this for chaining
*/
public Builder handlers(
Function> handlers) {
this.handlers = handlers;
return this;
}
/**
* Overrides the closing function.
* @param closingFunction closing function provider
* @return this for chaining
*/
public Builder closingFunction(Consumer closingFunction) {
this.closingFunction = closingFunction;
return this;
}
/**
* Registers setup.
* @param registry observation registry to which the {@link ObservationHandler}
* should be attached
* @return setup with all Brave building blocks
*/
public ZipkinBraveSetup register(ObservationRegistry registry) {
BytesMessageSender sender = this.sender != null ? this.sender.get() : sender(this.zipkinUrl);
AsyncZipkinSpanHandler spanHandler = this.spanHandler != null ? this.spanHandler.apply(sender)
: spanHandler(sender);
TestSpanHandler testSpanHandler = new TestSpanHandler();
Tracing tracing = this.tracing != null ? this.tracing.apply(spanHandler)
: tracing(spanHandler, testSpanHandler, this.applicationName);
Tracer tracer = this.tracer != null ? this.tracer.apply(tracing) : tracer(tracing);
HttpTracing httpTracing = this.httpTracing != null ? this.httpTracing.apply(tracing) : httpTracing(tracing);
BiConsumer>> customizers = this.customizers != null
? this.customizers : (t, h) -> {
};
BraveBuildingBlocks braveBuildingBlocks = new BraveBuildingBlocks(sender, spanHandler, tracing, tracer,
new BravePropagator(tracing), httpTracing, customizers, testSpanHandler);
ObservationHandler tracingHandlers = this.handlers != null
? this.handlers.apply(braveBuildingBlocks) : tracingHandlers(braveBuildingBlocks);
registry.observationConfig().observationHandler(tracingHandlers);
Consumer closingFunction = this.closingFunction != null ? this.closingFunction
: closingFunction();
return new ZipkinBraveSetup(closingFunction, braveBuildingBlocks);
}
private static BytesMessageSender sender(String zipkinUrl) {
return URLConnectionSender.newBuilder()
.connectTimeout(1000)
.readTimeout(1000)
.endpoint((zipkinUrl.endsWith("/") ? zipkinUrl.substring(0, zipkinUrl.length() - 1) : zipkinUrl)
+ "/api/v2/spans")
.build();
}
private static AsyncZipkinSpanHandler spanHandler(BytesMessageSender sender) {
return AsyncZipkinSpanHandler.create(sender);
}
private static Tracer tracer(Tracing tracing) {
return new BraveTracer(tracing.tracer(), new BraveCurrentTraceContext(tracing.currentTraceContext()),
new BraveBaggageManager());
}
private static Tracing tracing(AsyncZipkinSpanHandler spanHandler, TestSpanHandler testSpanHandler,
String applicationName) {
return Tracing.newBuilder()
.localServiceName(applicationName)
.addSpanHandler(spanHandler)
.addSpanHandler(testSpanHandler)
.currentTraceContext(ThreadLocalCurrentTraceContext.create())
.sampler(Sampler.ALWAYS_SAMPLE)
.build();
}
private static HttpTracing httpTracing(Tracing tracing) {
return HttpTracing.newBuilder(tracing).build();
}
private static Consumer closingFunction() {
return deps -> {
deps.httpTracing.close();
deps.tracing.close();
AsyncZipkinSpanHandler spanHandler = deps.spanHandler;
spanHandler.flush();
spanHandler.close();
};
}
@SuppressWarnings("rawtypes")
private static ObservationHandler tracingHandlers(
BraveBuildingBlocks braveBuildingBlocks) {
Tracer tracer = braveBuildingBlocks.tracer;
LinkedList> handlers = new LinkedList<>();
handlers.add(new PropagatingSenderTracingObservationHandler<>(tracer, braveBuildingBlocks.propagator));
handlers.add(new PropagatingReceiverTracingObservationHandler<>(tracer, braveBuildingBlocks.propagator));
handlers.add(new DefaultTracingObservationHandler(tracer));
braveBuildingBlocks.customizers.accept(braveBuildingBlocks, handlers);
return new ObservationHandler.FirstMatchingCompositeObservationHandler(handlers);
}
}
/**
* Runs the given lambda with Zipkin setup.
* @param registry observation registry to register the handlers against
* @param consumer lambda to be executed with the building blocks
*/
public static void run(ObservationRegistry registry, Consumer consumer) {
run(ZipkinBraveSetup.builder().register(registry), consumer);
}
/**
* @param localZipkinBrave Brave setup with Zipkin
* @param consumer runnable to run
*/
public static void run(ZipkinBraveSetup localZipkinBrave, Consumer consumer) {
try {
consumer.accept(localZipkinBrave.getBuildingBlocks());
}
finally {
localZipkinBrave.close();
}
}
}
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