Add manual instrumentation to tracing (#175)

* add tracing to /pseudo/field endpoint

* switch to manual instrumentation

Author: skykanin

.nais/test/nais.yaml

@@ -66,7 +66,7 @@ spec:
   observability:
     autoInstrumentation:
       enabled: true
-      runtime: java
+      runtime: sdk
 
   env:
     - name: MICRONAUT_CONFIG_FILES

conf/application.yml

@@ -35,3 +35,13 @@ logger:
   levels:
     io.micronaut.security: INFO
     no.ssb.dlp.pseudo.service: DEBUG
+
+otel.service.name: ${OTEL_SERVICE_NAME}
+otel.traces.exporter: otlp
+otel.metrics.exporter: otlp
+otel.logs.exporter: otlp
+otel:
+  exporter:
+    otlp:
+      url:
+        ${OTEL_EXPORTER_OTLP_ENDPOINT}

pom.xml

@@ -28,6 +28,7 @@
     <micronaut.version>4.10.7</micronaut.version>
     <micronaut.openapi.version>6.19.1</micronaut.openapi.version>
     <micronaut-gcp-version>5.13.0</micronaut-gcp-version>
+    <micronaut.tracing.version>7.2.0</micronaut.tracing.version>
     <grpc-netty-shaded-version>1.75.0</grpc-netty-shaded-version>
     <micronaut.validation.version>4.12.0</micronaut.validation.version>
     <auto-service.version>1.1.1</auto-service.version>
@@ -127,9 +128,13 @@
       <version>5.10.1</version>
     </dependency>
     <dependency>
-        <groupId>io.micronaut.tracing</groupId>
-        <artifactId>micronaut-tracing-annotation</artifactId>
-        <version>7.2.0</version>
+      <groupId>io.micronaut.tracing</groupId>
+      <artifactId>micronaut-tracing-annotation</artifactId>
+      <version>${micronaut.tracing.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>io.opentelemetry</groupId>
+      <artifactId>opentelemetry-exporter-otlp</artifactId>
     </dependency>
     <dependency>
       <groupId>io.micronaut.cache</groupId>
@@ -424,6 +429,11 @@
                 <artifactId>micronaut-openapi</artifactId>
                 <version>${micronaut.openapi.version}</version>
               </path>
+                <path>
+                    <groupId>io.micronaut.tracing</groupId>
+                    <artifactId>micronaut-tracing-opentelemetry-annotation</artifactId>
+                    <version>${micronaut.tracing.version}</version>
+                </path>
               <path>
                 <groupId>com.google.auto.service</groupId>
                 <artifactId>auto-service</artifactId>