chore: add otel-profiling-java example (#2872)

Author: kolesnikovae

examples/java/rideshare/Dockerfile.otel-instrumentation

@@ -0,0 +1,50 @@
+FROM --platform=$BUILDPLATFORM openjdk:17-slim-bullseye as builder
+
+WORKDIR /opt/app
+
+RUN apt-get update && apt-get install ca-certificates -y && update-ca-certificates 
+
+
+
+COPY gradlew .
+COPY gradle gradle
+RUN ./gradlew
+
+COPY build.gradle.kts settings.gradle.kts ./
+RUN ./gradlew dependencies --no-daemon
+
+COPY src src
+RUN ./gradlew assemble --no-daemon
+
+
+FROM  openjdk:17-slim-bullseye
+
+RUN apt-get update && apt-get install ca-certificates -y && update-ca-certificates
+
+ENV PYROSCOPE_APPLICATION_NAME=rideshare.java.push.app
+ENV PYROSCOPE_FORMAT=jfr
+ENV PYROSCOPE_PROFILING_INTERVAL=10ms
+ENV PYROSCOPE_PROFILER_EVENT=itimer
+ENV PYROSCOPE_PROFILER_LOCK=10ms
+ENV PYROSCOPE_PROFILER_ALLOC=512k
+ENV PYROSCOPE_UPLOAD_INTERVAL=15s
+ENV PYROSCOPE_LOG_LEVEL=debug
+ENV PYROSCOPE_SERVER_ADDRESS=http://localhost:4040
+
+ENV OTEL_JAVAAGENT_EXTENSIONS=./pyroscope-otel.jar
+
+ENV OTEL_PYROSCOPE_ADD_PROFILE_URL=false
+ENV OTEL_PYROSCOPE_ADD_PROFILE_BASELINE_URL=false
+ENV OTEL_PYROSCOPE_START_PROFILING=true
+
+COPY --from=builder /opt/app/build/libs/rideshare-1.0-SNAPSHOT.jar /opt/app/build/libs/rideshare-1.0-SNAPSHOT.jar
+
+WORKDIR /opt/app
+
+ADD https://github.com/grafana/pyroscope-java/releases/download/v0.12.2/pyroscope.jar /opt/app/pyroscope.jar
+ADD https://github.com/open-telemetry/opentelemetry-java-instrumentation/releases/download/v1.17.0/opentelemetry-javaagent.jar opentelemetry-javaagent.jar
+ADD https://repo1.maven.org/maven2/io/pyroscope/otel/0.10.1.3/otel-0.10.1.3.jar pyroscope-otel.jar
+
+EXPOSE 5000
+
+CMD ["java", "-Dserver.port=5000", "-javaagent:./opentelemetry-javaagent.jar", "-javaagent:pyroscope.jar", "-jar", "./build/libs/rideshare-1.0-SNAPSHOT.jar" ]

examples/java/rideshare/src/main/java/org/example/rideshare/Main.java

@@ -9,7 +9,9 @@
 @SpringBootApplication
 public class Main {
     public static void main(String[] args) {
-        Pyroscope.setStaticLabels(Map.of("region", System.getenv("REGION")));
+        Pyroscope.setStaticLabels(Map.of(
+            "region", System.getenv("REGION"),
+            "hostname", System.getenv("HOSTNAME")));
         SpringApplication.run(Main.class, args);
     }
 }

examples/tracing/tempo/README.md

@@ -14,6 +14,7 @@ Pyroscope and Tempo datasources are provisioned automatically.
 The project can be run locally with the following commands:
 
 ```shell
+GOOS=linux GOARCH=amd64 make build -C ../../..
 docker-compose up --build
 ```
 
@@ -30,7 +31,9 @@ less than the sample interval (10ms).
 
 ### Instrumentation
 
- - `rideshare` demo application instrumented with OpenTelemetry and [Pyroscope SDK](https://github.com/grafana/otel-profiling-go)
+ - `rideshare` demo application instrumented with OpenTelemetry:
+   - Go [OTel integration](https://github.com/grafana/otel-profiling-go)
+   - Java [OTel integration](https://github.com/grafana/otel-profiling-java) 
  - `pyroscope` itself is instrumented with `opentracing-go` SDK and [`spanprofiler`](../../../pkg/util/spanprofiler) for profiling integration.
 
 ### Grafana Tempo configuration

examples/tracing/tempo/docker-compose.yml

@@ -1,44 +1,60 @@
 version: "3"
 
 services:
-  us-east:
+  rideshare-go-ap-south:
     ports:
       - 5000
+    hostname: rideshare-go-ap-south
     environment: &env
       PYROSCOPE_SERVER_ADDRESS: http://pyroscope:4040
       OTLP_URL: tempo:4318
       OTLP_INSECURE: 1
       DEBUG_LOGGER: 1
-      REGION: us-east
+      REGION: ap-south
     build:
       context: ../../golang-push/rideshare
 
-  eu-north:
+  rideshare-go-eu-north:
     ports:
       - 5000
+    hostname: rideshare-go-eu-north
     environment:
       <<: *env
       REGION: eu-north
     build:
       context: ../../golang-push/rideshare
 
-  ap-south:
+  rideshare-java-us-east:
     ports:
       - 5000
+    hostname: rideshare-java-us-east
     environment:
       <<: *env
-      REGION: ap-south
+      OTEL_TRACES_EXPORTER: otlp
+      OTEL_EXPORTER_OTLP_ENDPOINT: http://tempo:4317
+      OTEL_SERVICE_NAME: rideshare.java.push.app
+      OTEL_METRICS_EXPORTER: none
+      OTEL_TRACES_SAMPLER: always_on
+      OTEL_PROPAGATORS: tracecontext
+      PYROSCOPE_LABELS: hostname=rideshare-java-us-east
+      REGION: us-east
     build:
-      context: ../../golang-push/rideshare
+      context: ../../java/rideshare
+      dockerfile: Dockerfile.otel-instrumentation
 
   load-generator:
     environment: *env
     build:
       context: ../../golang-push/rideshare
       dockerfile: Dockerfile.load-generator
+    command:
+      - ./loadgen
+      - rideshare-go-ap-south
+      - rideshare-go-eu-north
+      - rideshare-java-us-east
 
   grafana:
-    image: grafana/grafana-dev:10.3.0-149048
+    image: grafana/grafana-dev:10.3.0-151740
     environment:
       - GF_AUTH_ANONYMOUS_ENABLED=true
       - GF_AUTH_ANONYMOUS_ORG_ROLE=Admin
@@ -64,7 +80,6 @@ services:
       - "9411:9411"   # zipkin
 
   pyroscope:
-    image: grafana/pyroscope:1.2.0
     environment:
       JAEGER_AGENT_HOST: tempo
       JAEGER_SAMPLER_TYPE: const
@@ -74,3 +89,6 @@ services:
       - '4040:4040'
     volumes:
       - ./pyroscope/pyroscope.yml:/etc/pyroscope.yml
+    build:
+      context: '../../../'
+      dockerfile: cmd/pyroscope/Dockerfile