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Added OtelInstrumentation and exporter

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This commit is contained in:
James 2023-01-31 15:07:11 -05:00
parent ca055dbbe1
commit cfb034f07f
5 changed files with 168 additions and 16 deletions
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37
pom.xml
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@ -29,7 +29,44 @@
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>io.opentelemetry</groupId>
<artifactId>opentelemetry-bom</artifactId>
<version>1.12.0</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>io.opentelemetry</groupId>
<artifactId>opentelemetry-api</artifactId>
</dependency>
<dependency>
<groupId>io.opentelemetry</groupId>
<artifactId>opentelemetry-api</artifactId>
</dependency>
<dependency>
<groupId>io.opentelemetry</groupId>
<artifactId>opentelemetry-sdk</artifactId>
</dependency>
<dependency>
<groupId>io.opentelemetry</groupId>
<artifactId>opentelemetry-exporter-otlp-http-trace</artifactId>
</dependency>
<dependency>
<groupId>io.opentelemetry</groupId>
<artifactId>opentelemetry-semconv</artifactId>
<version>1.12.0-alpha</version>
</dependency>
<!-- Spring and Spring Boot dependencies -->
<dependency>
<groupId>org.springframework.boot</groupId>

7
run.sh Normal file
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@ -0,0 +1,7 @@
#!/bin/bash
OTEL_RESOURCE_ATTRIBUTES="service.name=spring-petclinic,service.version=1.0.0"
java -jar target/spring-petclinic-3.0.0-SNAPSHOT.jar

31
src/main/java/org/springframework/samples/petclinic/OpenTelemetryInstrumentation.java Normal file
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@ -0,0 +1,31 @@
package org.springframework.samples.petclinic;
import io.opentelemetry.api.GlobalOpenTelemetry;
import io.opentelemetry.api.trace.Span;
import io.opentelemetry.api.trace.Tracer;
import io.opentelemetry.context.Scope;
public class OpenTelemetryInstrumentation {
public static void instrumentTracing() {
Tracer tracer = GlobalOpenTelemetry
.getTracerProvider()
.tracerBuilder("my-tracer") //TODO Replace with the name of your tracer
.build();
Span span = tracer
.spanBuilder("my-span") //TODO Replace with the name of your span
.setAttribute("my-key-1", "my-value-1") //TODO Add initial attributes
.startSpan();
try (Scope scope = span.makeCurrent()) {
span.setAttribute("key-2", "value-2"); //TODO Add extra attributes if necessary
//TODO your code goes here
} finally {
span.end();
}
}
}

70
src/main/java/org/springframework/samples/petclinic/OtelExporter.java Normal file
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@ -0,0 +1,70 @@
package org.springframework.samples.petclinic;
import io.opentelemetry.api.common.AttributeKey;
import io.opentelemetry.api.common.Attributes;
import io.opentelemetry.api.trace.propagation.W3CTraceContextPropagator;
import io.opentelemetry.context.propagation.ContextPropagators;
import io.opentelemetry.exporter.otlp.http.trace.OtlpHttpSpanExporter;
import io.opentelemetry.sdk.OpenTelemetrySdk;
import io.opentelemetry.sdk.resources.Resource;
import io.opentelemetry.sdk.trace.SdkTracerProvider;
import io.opentelemetry.sdk.trace.export.BatchSpanProcessor;
import io.opentelemetry.sdk.trace.export.SpanExporter;
import io.opentelemetry.sdk.trace.samplers.Sampler;
import java.io.FileInputStream;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.Optional;
import java.util.Properties;
import java.util.stream.Stream;
public class OtelExporter {
public static void initOpenTelemetry() throws IOException {
Resource serviceName = Optional.ofNullable(System.getenv("petClinic"))
.map(n -> Attributes.of(AttributeKey.stringKey("springPetClinic"), n))
.map(Resource::create)
.orElseGet(Resource::empty);
Resource envResourceAttributes = Resource.create(Stream.of(Optional.ofNullable(System.getenv("OTEL_RESOURCE_ATTRIBUTES")).orElse("").split(","))
.filter(pair -> pair != null && pair.length() > 0 && pair.contains("="))
.map(pair -> pair.split("="))
.filter(pair -> pair.length == 2)
.collect(Attributes::builder, (b, p) -> b.put(p[0], p[1]), (b1, b2) -> b1.putAll(b2.build()))
.build()
);
Resource dtMetadata = Resource.empty();
for (String name : new String[] {"dt_metadata_e617c525669e072eebe3d0f08212e8f2.properties", "/var/lib/dynatrace/enrichment/dt_metadata.properties"}) {
try {
Properties props = new Properties();
props.load(name.startsWith("/var") ? new FileInputStream(name) : new FileInputStream(Files.readAllLines(Paths.get(name)).get(0)));
dtMetadata = dtMetadata.merge(Resource.create(props.entrySet().stream()
.collect(Attributes::builder, (b, e) -> b.put(e.getKey().toString(), e.getValue().toString()), (b1, b2) -> b1.putAll(b2.build()))
.build())
);
} catch (IOException e) {}
}
SpanExporter exporter = OtlpHttpSpanExporter.builder()
.setEndpoint("http://englab-tdbank.datadog.hq.com") //TODO Replace <URL> to your SaaS/Managed-URL as mentioned in the next step
.addHeader("Authorization", "93ffd05f8f2a91e0b8a22e476e1bb3c6a3de5dcd") //TODO Replace <TOKEN> with your API Token as mentioned in the next step
.build();
SdkTracerProvider sdkTracerProvider = SdkTracerProvider.builder()
.setResource(Resource.getDefault().merge(envResourceAttributes).merge(serviceName).merge(dtMetadata))
.setSampler(Sampler.alwaysOn())
.addSpanProcessor(BatchSpanProcessor.builder(exporter).build())
.build();
OpenTelemetrySdk.builder()
.setTracerProvider(sdkTracerProvider)
.setPropagators(ContextPropagators.create(W3CTraceContextPropagator.getInstance()))
.buildAndRegisterGlobal();
Runtime.getRuntime().addShutdownHook(new Thread(sdkTracerProvider::close));
}
}

25
src/main/java/org/springframework/samples/petclinic/PetClinicApplication.java
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@ -14,11 +14,14 @@
* limitations under the License.
*/
package org.springframework.samples.petclinic;
package org.springframework.samples.petclinic;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ImportRuntimeHints;
import org.aspectj.apache.bcel.classfile.Module;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ImportRuntimeHints;
import java.io.IOException;
/**
* PetClinic Spring Boot Application.
@ -26,12 +29,16 @@ import org.springframework.context.annotation.ImportRuntimeHints;
* @author Dave Syer
*
*/
@SpringBootApplication
@ImportRuntimeHints(PetClinicRuntimeHints.class)
public class PetClinicApplication {
@SpringBootApplication
@ImportRuntimeHints(PetClinicRuntimeHints.class)
public class PetClinicApplication {
public static void main(String[] args) {
public static void main(String[] args) throws IOException {
OtelExporter.initOpenTelemetry();
OpenTelemetryInstrumentation.instrumentTracing();
SpringApplication.run(PetClinicApplication.class, args);
}
}
}