chore: add tracing endpoint

pom.xml

@@ -42,6 +42,11 @@
 			<artifactId>agent</artifactId>
 			<version>0.12.1</version>
 		</dependency>
+		<dependency>
+			<groupId>io.pyroscope</groupId>
+			<artifactId>otel</artifactId>
+			<version>0.10.1.4</version>
+		</dependency>
 
 		<dependency>
 			<groupId>io.micrometer</groupId>

src/main/java/ch/baloise/observability/gabelstaplerbuggyapp/GabelStaplerBuggyApplication.java

@@ -16,36 +16,30 @@
 @SpringBootApplication
 public class GabelStaplerBuggyApplication {
 
-	@Value("${spring.application.name}")
-	private String applicationName;
-
-	@Value("${pyroscope.url}")
-	private String pyroscopeUrl;
-
 	public static void main(String[] args) {
 		Hooks.enableAutomaticContextPropagation();
 		SpringApplication.run(GabelStaplerBuggyApplication.class, args);
 	}
 
-	@PostConstruct
-	public void init() {
-		PyroscopeAgent.start(
-				new Config.Builder()
-						.setApplicationName(applicationName)
-						.setProfilingEvent(EventType.ITIMER)
-						.setFormat(Format.JFR)
-						.setServerAddress(pyroscopeUrl)
-						// Optionally, if authentication is enabled, specify the API key.
-						// .setAuthToken(System.getenv("PYROSCOPE_AUTH_TOKEN"))
-						// Optionally, if you'd like to set allocation threshold to register events, in bytes. '0' registers all events
-						.setProfilingAlloc("0")
-						//.setSamplingDuration(Duration.)
-						.setLogLevel(Logger.Level.DEBUG)
-						.setProfilingLock("10ms")
-						.setProfilingInterval(Duration.ofMillis(10))
-						.setUploadInterval(Duration.ofSeconds(10))
-						.build()
-		);
-	}
+//	@PostConstruct
+//	public void init() {
+//		PyroscopeAgent.start(
+//				new Config.Builder()
+//						.setApplicationName(applicationName)
+//						.setProfilingEvent(EventType.ITIMER)
+//						.setFormat(Format.JFR)
+//						.setServerAddress(pyroscopeUrl)
+//						// Optionally, if authentication is enabled, specify the API key.
+//						// .setAuthToken(System.getenv("PYROSCOPE_AUTH_TOKEN"))
+//						// Optionally, if you'd like to set allocation threshold to register events, in bytes. '0' registers all events
+//						.setProfilingAlloc("0")
+//						//.setSamplingDuration(Duration.)
+//						.setLogLevel(Logger.Level.DEBUG)
+//						.setProfilingLock("10ms")
+//						.setProfilingInterval(Duration.ofMillis(10))
+//						.setUploadInterval(Duration.ofSeconds(10))
+//						.build()
+//		);
+//	}
 
 }

src/main/java/ch/baloise/observability/gabelstaplerbuggyapp/OtlpConfiguration.java

@@ -2,6 +2,15 @@
 
 import io.opentelemetry.exporter.otlp.trace.OtlpGrpcSpanExporter;
 import io.opentelemetry.exporter.otlp.trace.OtlpGrpcSpanExporterBuilder;
+import io.opentelemetry.sdk.trace.SpanProcessor;
+import io.otel.pyroscope.PyroscopeOtelConfiguration;
+import io.otel.pyroscope.PyroscopeOtelSpanProcessor;
+import io.pyroscope.http.Format;
+import io.pyroscope.javaagent.EventType;
+import io.pyroscope.javaagent.PyroscopeAgent;
+import io.pyroscope.javaagent.api.Logger;
+import io.pyroscope.javaagent.config.Config;
+import org.springframework.beans.factory.annotation.Value;
 import org.springframework.boot.actuate.autoconfigure.tracing.otlp.OtlpProperties;
 import org.springframework.boot.context.properties.EnableConfigurationProperties;
 import org.springframework.context.annotation.Bean;
@@ -13,6 +22,43 @@
 @EnableConfigurationProperties(OtlpProperties.class)
 public class OtlpConfiguration {
 
+    @Value("${spring.application.name}")
+    private String applicationName;
+
+    @Value("${pyroscope.url}")
+    private String pyroscopeUrl;
+
+    @Value("${pyroscope.frontend-url}")
+    private String pyroscopeFrontendUrl;
+
+    @Bean
+    Config pyroscopeConfig() {
+        return new Config.Builder()
+                .setApplicationName(applicationName)
+                .setProfilingEvent(EventType.ITIMER)
+                .setFormat(Format.JFR)
+                .setLogLevel(Logger.Level.DEBUG)
+                .setServerAddress(pyroscopeUrl)
+                .build();
+    }
+
+    @Bean
+    SpanProcessor pyroscopeSpanProcessor(Config pyroscopeConfig) {
+        PyroscopeAgent.start(
+                new PyroscopeAgent.Options.Builder(pyroscopeConfig)
+                        .build()
+        );
+
+        PyroscopeOtelConfiguration pyroscopeOtelConfig = new PyroscopeOtelConfiguration.Builder()
+                .setAppName(pyroscopeConfig.applicationName + "." + pyroscopeConfig.profilingEvent.id)
+                .setPyroscopeEndpoint(pyroscopeFrontendUrl)
+                .setAddProfileURL(true)
+                .setAddSpanName(true)
+                .setAddProfileBaselineURLs(true)
+                .build();
+        return new PyroscopeOtelSpanProcessor(pyroscopeOtelConfig);
+    }
+
     // OtlpAutoConfiguration use HTTP by default, we update it to use GRPC
     // https://github.com/spring-projects/spring-boot/blob/main/spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/tracing/otlp/OtlpAutoConfiguration.java
     @Bean

src/main/resources/application.yaml

@@ -23,3 +23,5 @@ logging:
 
 pyroscope:
   url: ${PYROSCOPE_URL:http://pyroscope:4040}
+  frontend-url: ${PYROSCOPE_FRONTEND_URL:http://pyroscope:4040}
+  "https://pyroscope-monitoring-stack.apps.baloise.dev/"