io.micrometer.tracing.test.SampleTestRunner Maven / Gradle / Ivy
/**
* 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;
import io.micrometer.common.util.StringUtils;
import io.micrometer.common.util.internal.logging.InternalLogger;
import io.micrometer.common.util.internal.logging.InternalLoggerFactory;
import io.micrometer.core.instrument.MeterRegistry;
import io.micrometer.core.instrument.observation.DefaultMeterObservationHandler;
import io.micrometer.core.instrument.simple.SimpleMeterRegistry;
import io.micrometer.observation.Observation;
import io.micrometer.observation.ObservationHandler;
import io.micrometer.observation.ObservationRegistry;
import io.micrometer.observation.ObservationRegistry.ObservationConfig;
import io.micrometer.observation.TestConfigAccessor;
import io.micrometer.tracing.Tracer;
import io.micrometer.tracing.handler.TracingObservationHandler;
import io.micrometer.tracing.test.reporter.BuildingBlocks;
import io.micrometer.tracing.test.reporter.inmemory.InMemoryBraveSetup;
import io.micrometer.tracing.test.reporter.inmemory.InMemoryOtelSetup;
import io.micrometer.tracing.test.reporter.wavefront.WavefrontBraveSetup;
import io.micrometer.tracing.test.reporter.wavefront.WavefrontOtelSetup;
import io.micrometer.tracing.test.reporter.zipkin.ZipkinBraveSetup;
import io.micrometer.tracing.test.reporter.zipkin.ZipkinOtelSetup;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Assumptions;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.EnumSource;
import zipkin2.CheckResult;
import zipkin2.reporter.Sender;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Deque;
import java.util.List;
import java.util.Locale;
import java.util.function.BiConsumer;
/**
* Prepares the required tracing setup and reporters / exporters. The user needs to just
* provide the code to test and that way all the combinations of tracers and exporters
* will be automatically applied. It also sets up the {@link MeterRegistry} in such a way
* that it consists all {@link TracingObservationHandler} injected into
* {@link ObservationRegistry#observationConfig()}.
*
* When extending this class you can eagerly pass the {@link SampleRunnerConfig} by
* calling this class' constructors. Different registry instances can be provided by
* overriding {@link SampleTestRunner#createMeterRegistry()} and/or
* {@link SampleTestRunner#createObservationRegistry()}.
*
* @author Marcin Grzejszczak
* @since 1.0.0
*/
public abstract class SampleTestRunner {
private static final InternalLogger log = InternalLoggerFactory.getInstance(SampleTestRunner.class);
private SampleRunnerConfig sampleRunnerConfig;
private ObservationRegistry observationRegistry;
private MeterRegistry meterRegistry;
/**
* Creates a new instance of the {@link SampleTestRunner}.
* @param sampleRunnerConfig configuration for the SampleTestRunner
*/
public SampleTestRunner(SampleRunnerConfig sampleRunnerConfig) {
this.sampleRunnerConfig = sampleRunnerConfig;
}
/**
* Creates a new instance of the {@link SampleTestRunner} with a default
* configuration.
*/
public SampleTestRunner() {
this.sampleRunnerConfig = SampleRunnerConfig.builder().build();
}
/**
* Create a new instance of {@link MeterRegistry}. Each parameterized test run calls
* this method to create a new instance. Override this method to use different
* {@link MeterRegistry} implementation.
* @return a new meter registry
*/
protected MeterRegistry createMeterRegistry() {
return new SimpleMeterRegistry();
}
/**
* Returns the {@link MeterRegistry} instance used during each parameterized test run.
* @return meter registry to be used in tests
*/
protected MeterRegistry getMeterRegistry() {
Assertions.assertNotNull(this.meterRegistry,
"MeterRegistry must be set either via constructor via overriding a method");
return this.meterRegistry;
}
/**
* Create a new instance of {@link ObservationRegistry}. Override this method to use
* different {@link ObservationRegistry} implementation.
* @return a new observation registry
*/
protected ObservationRegistry createObservationRegistry() {
ObservationRegistry registry = ObservationRegistry.create();
registry.observationConfig().observationHandler(new DefaultMeterObservationHandler(getMeterRegistry()));
return registry;
}
/**
* Returns the {@link ObservationRegistry} instance used during each parameterized
* test run.
* @return observation registry to be used in tests
*/
protected ObservationRegistry getObservationRegistry() {
Assertions.assertNotNull(this.observationRegistry,
"ObservationRegistry must be set either via constructor via overriding a method");
return this.observationRegistry;
}
/**
* Override this to resolve the {@link SampleRunnerConfig} at runtime. If not
* overridden * will return the passed {@link MeterRegistry} from the constructor.
* @return sampler config to be used in tests
*/
protected SampleRunnerConfig getSampleRunnerConfig() {
return this.sampleRunnerConfig;
}
@ParameterizedTest
@EnumSource(TracingSetup.class)
void run(TracingSetup tracingSetup) {
tracingSetup.run(getSampleRunnerConfig(), getObservationRegistry(), getMeterRegistry(), this);
}
/**
* Sets up registries before each test.
*/
@BeforeEach
protected void setupRegistry() {
this.meterRegistry = createMeterRegistry();
this.observationRegistry = createObservationRegistry();
}
/**
* Closes meter registry after each test.
*/
@AfterEach
protected void closeMeterRegistry() {
getMeterRegistry().close();
}
private void printMetrics() {
StringBuilder stringBuilder = new StringBuilder();
getMeterRegistry().forEachMeter(meter -> stringBuilder.append("\tMeter with name <")
.append(meter.getId().getName())
.append(">")
.append(" and type <")
.append(meter.getId().getType())
.append(">")
.append(" has the following measurements \n\t\t<")
.append(meter.measure())
.append(">")
.append(" \n\t\tand has the following tags <")
.append(meter.getId().getTags())
.append(">\n"));
log.info("Gathered the following metrics\n" + stringBuilder);
}
/**
* Code that you want to measure and run.
* @return your code with access to the current tracing and measuring infrastructure
* @throws Exception any exception will be rethrown
*/
public abstract SampleTestRunnerConsumer yourCode() throws Exception;
private SampleTestRunnerConsumer runWithMetricsPrinting() {
return (bb, registry) -> {
try {
yourCode().accept(bb, registry);
}
catch (Exception e) {
throw new RuntimeException(e);
}
finally {
printMetrics();
}
};
}
/**
* Functional interface to run user code.
*
* @since 1.0.0
*/
@FunctionalInterface
public interface SampleTestRunnerConsumer {
/**
* @param bb - building blocks
* @param meterRegistry - meter registry
* @throws Exception exception
*/
void accept(BuildingBlocks bb, MeterRegistry meterRegistry) throws Exception;
}
/**
* Override this to customize the list of timer recording handlers.
* @return timer recording handler customizing function
*/
@SuppressWarnings("rawtypes")
public BiConsumer>> customizeObservationHandlers() {
return (tracer, ObservationHandlers) -> {
};
}
/**
* Override this to just run a subset of tracing setups to run.
* @return array of tracing setups to run
*/
public TracingSetup[] getTracingSetup() {
return TracingSetup.values();
}
/**
* Tracing setups. Contains various combinations of tracers and reporters.
*/
public enum TracingSetup {
/**
* In memory with OTel Tracer.
*/
IN_MEMORY_OTEL {
@Override
void run(SampleRunnerConfig sampleRunnerConfig, ObservationRegistry observationRegistry,
MeterRegistry meterRegistry, SampleTestRunner sampleTestRunner) {
checkTracingSetupAssumptions(IN_MEMORY_OTEL, sampleTestRunner.getTracingSetup());
scopeObservationHandlers(observationRegistry, () -> {
InMemoryOtelSetup setup = InMemoryOtelSetup.builder()
.observationHandlerCustomizer(sampleTestRunner.customizeObservationHandlers())
.register(observationRegistry);
InMemoryOtelSetup.run(setup,
__ -> runTraced(sampleRunnerConfig, IN_MEMORY_OTEL, setup.getBuildingBlocks(),
observationRegistry, meterRegistry, sampleTestRunner.runWithMetricsPrinting()));
});
}
@Override
void printTracingLink(SampleRunnerConfig sampleRunnerConfig, String traceId) {
log.info("In memory tracing used. All spans should have trace id <{}>", traceId);
}
},
/**
* In memory with Brave Tracer.
*/
IN_MEMORY_BRAVE {
@Override
void run(SampleRunnerConfig sampleRunnerConfig, ObservationRegistry observationRegistry,
MeterRegistry meterRegistry, SampleTestRunner sampleTestRunner) {
checkTracingSetupAssumptions(IN_MEMORY_BRAVE, sampleTestRunner.getTracingSetup());
scopeObservationHandlers(observationRegistry, () -> {
InMemoryBraveSetup setup = InMemoryBraveSetup.builder()
.observationHandlerCustomizer(sampleTestRunner.customizeObservationHandlers())
.register(observationRegistry);
InMemoryBraveSetup.run(setup,
__ -> runTraced(sampleRunnerConfig, IN_MEMORY_BRAVE, setup.getBuildingBlocks(),
observationRegistry, meterRegistry, sampleTestRunner.runWithMetricsPrinting()));
});
}
@Override
void printTracingLink(SampleRunnerConfig sampleRunnerConfig, String traceId) {
log.info("In memory tracing used. All spans should have trace id <{}>", traceId);
}
},
/**
* Zipkin Exporter with OTel Tracer.
*/
ZIPKIN_OTEL {
@Override
void run(SampleRunnerConfig sampleRunnerConfig, ObservationRegistry observationRegistry,
MeterRegistry meterRegistry, SampleTestRunner sampleTestRunner) {
checkTracingSetupAssumptions(ZIPKIN_OTEL, sampleTestRunner.getTracingSetup());
scopeObservationHandlers(observationRegistry, () -> {
ZipkinOtelSetup setup = ZipkinOtelSetup.builder()
.observationHandlerCustomizer(sampleTestRunner.customizeObservationHandlers())
.zipkinUrl(sampleRunnerConfig.zipkinUrl)
.register(observationRegistry);
checkZipkinAssumptions(setup.getBuildingBlocks().getSender());
ZipkinOtelSetup.run(setup,
__ -> runTraced(sampleRunnerConfig, ZIPKIN_OTEL, setup.getBuildingBlocks(),
observationRegistry, meterRegistry, sampleTestRunner.runWithMetricsPrinting()));
});
}
@Override
void printTracingLink(SampleRunnerConfig sampleRunnerConfig, String traceId) {
log.info("Below you can find the link to the trace in Zipkin with id <{}>", traceId);
log.info("{}/zipkin/traces/{}", sampleRunnerConfig.zipkinUrl, traceId);
}
},
/**
* Zipkin Reporter with Brave Tracer.
*/
ZIPKIN_BRAVE {
@Override
void run(SampleRunnerConfig sampleRunnerConfig, ObservationRegistry observationRegistry,
MeterRegistry meterRegistry, SampleTestRunner sampleTestRunner) {
checkTracingSetupAssumptions(ZIPKIN_BRAVE, sampleTestRunner.getTracingSetup());
scopeObservationHandlers(observationRegistry, () -> {
ZipkinBraveSetup setup = ZipkinBraveSetup.builder()
.observationHandlerCustomizer(sampleTestRunner.customizeObservationHandlers())
.zipkinUrl(sampleRunnerConfig.zipkinUrl)
.register(observationRegistry);
checkZipkinAssumptions(setup.getBuildingBlocks().getSender());
ZipkinBraveSetup.run(setup,
__ -> runTraced(sampleRunnerConfig, ZIPKIN_BRAVE, setup.getBuildingBlocks(),
observationRegistry, meterRegistry, sampleTestRunner.runWithMetricsPrinting()));
});
}
@Override
void printTracingLink(SampleRunnerConfig sampleRunnerConfig, String traceId) {
log.info("Below you can find the link to the trace in Zipkin with id <{}>", traceId);
log.info("{}/zipkin/traces/{}", sampleRunnerConfig.zipkinUrl, traceId);
}
},
/**
* Wavefront Exporter with OTel Tracer.
*/
WAVEFRONT_OTEL {
@Override
void run(SampleRunnerConfig sampleRunnerConfig, ObservationRegistry observationRegistry,
MeterRegistry meterRegistry, SampleTestRunner sampleTestRunner) {
checkTracingSetupAssumptions(WAVEFRONT_OTEL, sampleTestRunner.getTracingSetup());
checkWavefrontAssumptions(sampleRunnerConfig);
scopeObservationHandlers(observationRegistry, () -> {
WavefrontOtelSetup setup = WavefrontOtelSetup
.builder(sampleRunnerConfig.wavefrontServerUrl, sampleRunnerConfig.wavefrontToken)
.applicationName(sampleRunnerConfig.wavefrontApplicationName)
.serviceName(sampleRunnerConfig.wavefrontServiceName)
.source(sampleRunnerConfig.wavefrontSource)
.observationHandlerCustomizer(sampleTestRunner.customizeObservationHandlers())
.register(observationRegistry, meterRegistry);
WavefrontOtelSetup.run(setup,
__ -> runTraced(sampleRunnerConfig, WAVEFRONT_OTEL, setup.getBuildingBlocks(),
observationRegistry, meterRegistry, sampleTestRunner.runWithMetricsPrinting()));
});
}
@Override
void printTracingLink(SampleRunnerConfig sampleRunnerConfig, String traceId) {
log.info("Below you can find the link to the trace in Wavefront with id <{}>", traceId);
String wavefrontUrl = sampleRunnerConfig.wavefrontServerUrl.endsWith("/")
? sampleRunnerConfig.wavefrontServerUrl.substring(0,
sampleRunnerConfig.wavefrontServerUrl.length() - 1)
: sampleRunnerConfig.wavefrontServerUrl;
log.info("{}/tracing/search?sortBy=MOST_RECENT&traceID={}", wavefrontUrl, traceId);
}
},
/**
* Wavefront Exporter with Brave Tracer.
*/
WAVEFRONT_BRAVE {
@Override
void run(SampleRunnerConfig sampleRunnerConfig, ObservationRegistry observationRegistry,
MeterRegistry meterRegistry, SampleTestRunner sampleTestRunner) {
checkTracingSetupAssumptions(WAVEFRONT_BRAVE, sampleTestRunner.getTracingSetup());
checkWavefrontAssumptions(sampleRunnerConfig);
scopeObservationHandlers(observationRegistry, () -> {
WavefrontBraveSetup setup = WavefrontBraveSetup
.builder(sampleRunnerConfig.wavefrontServerUrl, sampleRunnerConfig.wavefrontToken)
.applicationName(sampleRunnerConfig.wavefrontApplicationName)
.serviceName(sampleRunnerConfig.wavefrontServiceName)
.source(sampleRunnerConfig.wavefrontSource)
.observationHandlerCustomizer(sampleTestRunner.customizeObservationHandlers())
.register(meterRegistry, observationRegistry);
WavefrontBraveSetup.run(setup,
__ -> runTraced(sampleRunnerConfig, WAVEFRONT_BRAVE, setup.getBuildingBlocks(),
observationRegistry, meterRegistry, sampleTestRunner.runWithMetricsPrinting()));
});
}
@Override
void printTracingLink(SampleRunnerConfig sampleRunnerConfig, String traceId) {
log.info("Below you can find the link to the trace in Wavefront with id <{}>", traceId);
String wavefrontUrl = sampleRunnerConfig.wavefrontServerUrl.endsWith("/")
? sampleRunnerConfig.wavefrontServerUrl.substring(0,
sampleRunnerConfig.wavefrontServerUrl.length() - 1)
: sampleRunnerConfig.wavefrontServerUrl;
log.info("{}/tracing/search?sortBy=MOST_RECENT&traceID={}", wavefrontUrl, traceId);
}
};
private static void scopeObservationHandlers(ObservationRegistry observationRegistry, Runnable runnable) {
ObservationConfig observationConfig = observationRegistry.observationConfig();
List> originalHandlers = new ArrayList<>(
TestConfigAccessor.getHandlers(observationConfig));
try {
runnable.run();
}
finally {
TestConfigAccessor.clearHandlers(observationConfig);
originalHandlers.forEach(observationConfig::observationHandler);
}
}
private static void runTraced(SampleRunnerConfig sampleRunnerConfig, TracingSetup tracingSetup,
BuildingBlocks bb, ObservationRegistry observationRegistry, MeterRegistry meterRegistry,
SampleTestRunnerConsumer runnable) {
Observation observation = Observation.start(tracingSetup.name().toLowerCase(Locale.ROOT),
observationRegistry);
String traceId = "";
try (Observation.Scope ws = observation.openScope()) {
Tracer tracer = bb.getTracer();
traceId = tracer.currentSpan().context().traceId();
runnable.accept(bb, meterRegistry);
}
catch (Exception ex) {
throw new RuntimeException(ex);
}
finally {
tracingSetup.printTracingLink(sampleRunnerConfig, traceId);
observation.stop();
}
}
private static void checkTracingSetupAssumptions(TracingSetup tracingSetup, TracingSetup[] chosenSetups) {
Assumptions.assumeTrue(Arrays.asList(chosenSetups).contains(tracingSetup), tracingSetup.name()
+ " not found in the list of tracing setups to run " + Arrays.toString(chosenSetups));
}
private static void checkZipkinAssumptions(Sender sender) {
CheckResult checkResult = sender.check();
Assumptions.assumeTrue(checkResult.ok(),
"There was a problem with connecting to Zipkin. Will NOT run any tests");
}
private static void checkWavefrontAssumptions(SampleRunnerConfig sampleRunnerConfig) {
Assumptions.assumeTrue(StringUtils.isNotBlank(sampleRunnerConfig.wavefrontServerUrl),
"To run tests against Tanzu Observability by Wavefront you need to set the Wavefront server url");
Assumptions.assumeTrue(StringUtils.isNotBlank(sampleRunnerConfig.wavefrontToken),
"To run tests against Tanzu Observability by Wavefront you need to set the Wavefront token");
}
abstract void run(SampleRunnerConfig sampleRunnerConfig, ObservationRegistry observationRegistry,
MeterRegistry meterRegistry, SampleTestRunner sampleTestRunner);
abstract void printTracingLink(SampleRunnerConfig sampleRunnerConfig, String traceId);
}
/**
* {@link SampleTestRunner} configuration.
*/
public static class SampleRunnerConfig {
private String wavefrontToken;
private String wavefrontServerUrl;
String zipkinUrl;
private String wavefrontApplicationName;
private String wavefrontServiceName;
private String wavefrontSource;
SampleRunnerConfig(String wavefrontToken, String wavefrontServerUrl, String wavefrontApplicationName,
String wavefrontServiceName, String wavefrontSource, String zipkinUrl) {
this.wavefrontToken = wavefrontToken;
this.wavefrontServerUrl = wavefrontServerUrl != null ? wavefrontServerUrl : "https://vmware.wavefront.com";
this.wavefrontApplicationName = wavefrontApplicationName != null ? wavefrontApplicationName
: "test-application";
this.wavefrontServiceName = wavefrontServiceName != null ? wavefrontServiceName : "test-service";
this.wavefrontSource = wavefrontSource != null ? wavefrontSource : "test-source";
this.zipkinUrl = zipkinUrl != null ? zipkinUrl : "http://localhost:9411";
}
/**
* @return {@link SampleTestRunner} builder
*/
public static Builder builder() {
return new Builder();
}
/**
* Builder for {@link SampleRunnerConfig}.
*/
public static class Builder {
private String wavefrontToken;
private String wavefrontUrl;
private String wavefrontApplicationName;
private String wavefrontServiceName;
private String wavefrontSource;
private String zipkinUrl;
/**
* Token required to connect to Tanzu Observability by Wavefront.
* @param wavefrontToken wavefront token
* @return this
*/
public Builder wavefrontToken(String wavefrontToken) {
this.wavefrontToken = wavefrontToken;
return this;
}
/**
* URL of your Tanzu Observability by Wavefront installation.
* @param wavefrontUrl wavefront URL.
* @return this
*/
public Builder wavefrontUrl(String wavefrontUrl) {
this.wavefrontUrl = wavefrontUrl;
return this;
}
/**
* URL of your Zipkin installation.
* @param zipkinUrl zipkin URL
* @return this
*/
public Builder zipkinUrl(String zipkinUrl) {
this.zipkinUrl = zipkinUrl;
return this;
}
/**
* Name of the application grouping in Tanzu Observability by Wavefront.
* @param wavefrontApplicationName wavefront application name
* @return this
*/
public Builder wavefrontApplicationName(String wavefrontApplicationName) {
this.wavefrontApplicationName = wavefrontApplicationName;
return this;
}
/**
* Name of this service in Tanzu Observability by Wavefront.
* @param wavefrontServiceName wavefront service name
* @return this
*/
public Builder wavefrontServiceName(String wavefrontServiceName) {
this.wavefrontServiceName = wavefrontServiceName;
return this;
}
/**
* Name of the source to be presented in Tanzu Observability by Wavefront.
* @param wavefrontSource wavefront source
* @return this
*/
public Builder wavefrontSource(String wavefrontSource) {
this.wavefrontSource = wavefrontSource;
return this;
}
/**
* Builds the configuration.
* @return built configuration
*/
public SampleRunnerConfig build() {
return new SampleRunnerConfig(this.wavefrontToken, this.wavefrontUrl, this.wavefrontApplicationName,
this.wavefrontServiceName, this.wavefrontSource, this.zipkinUrl);
}
}
}
}