feat(opentelemetry): add OpenTelemetry and JMX metrics

Dockerfile

@@ -17,6 +17,9 @@ ARG MYSQL_VERSION
 
 ARG JMX_PROMETHEUS_VERSION=1.0.1
 
+# --- OpenTelemetry Java Agent version argument ---
+ARG OPENTELEMETRY_AGENT_VERSION=2.19.0
+
 RUN apk add --no-cache \
         bash \
         ca-certificates \
@@ -30,12 +33,18 @@ COPY settings.xml download.sh cibseven-run.sh cibseven-tomcat.sh cibseven-wildfl
 RUN /tmp/download.sh
 COPY wait_for_it-lib.sh /camunda/
 
+# --- Create javaagent directory and download the OpenTelemetry agent ---
+RUN mkdir -p /camunda/javaagent && \
+    wget -O /camunda/javaagent/opentelemetry-javaagent-${OPENTELEMETRY_AGENT_VERSION}.jar \
+      https://github.com/open-telemetry/opentelemetry-java-instrumentation/releases/download/v${OPENTELEMETRY_AGENT_VERSION}/opentelemetry-javaagent.jar
 
 ##### FINAL IMAGE #####
 
 FROM alpine:3.22
 
 ARG VERSION=2.1.0
+ARG OPENTELEMETRY_AGENT_VERSION=2.19.0
+ENV OPENTELEMETRY_AGENT_VERSION=$OPENTELEMETRY_AGENT_VERSION
 
 ENV DB_DRIVER=
 ENV DB_URL=
@@ -52,11 +61,23 @@ ENV WAIT_FOR_TIMEOUT=30
 ENV TZ=UTC
 ENV DEBUG=false
 ENV JAVA_OPTS=""
+
+# --- Use OpenTelemetry agent by default ---
+ENV JAVA_TOOL_OPTIONS="-javaagent:/camunda/javaagent/opentelemetry-javaagent-${OPENTELEMETRY_AGENT_VERSION}.jar"
+
 ENV JMX_PROMETHEUS=false
 ENV JMX_PROMETHEUS_CONF=/camunda/javaagent/prometheus-jmx.yml
 ENV JMX_PROMETHEUS_PORT=9404
 
-EXPOSE 8080 8000 9404
+# OpenTelemetry default exporter settings (all exporters disabled, user must configure)
+ENV OTEL_SERVICE_NAME=cibseven-java17 \
+    OTEL_JMX_CONFIG=/camunda/javaagent/jmx_config.yaml,/camunda/javaagent/jmx_custom_config.yaml \
+    OTEL_METRICS_EXPORTER=none \
+    OTEL_LOGS_EXPORTER=none \
+    OTEL_TRACES_EXPORTER=none \
+    OTEL_EXPORTER_PROMETHEUS_PORT=9464
+
+EXPOSE 8080 8000 9404 9464
 
 # Downgrading wait-for-it is necessary until this PR is merged
 # https://github.com/vishnubob/wait-for-it/pull/68
@@ -81,3 +102,7 @@ ENTRYPOINT ["/sbin/tini", "--"]
 CMD ["./cibseven.sh"]
 
 COPY --chown=camunda:camunda --from=builder /camunda .
+
+# --- Add JMX config files (ensure these are present in your build context) ---
+COPY opentelemetry/jmx_config.yaml /camunda/javaagent/jmx_config.yaml
+COPY opentelemetry/jmx_custom_config.yaml /camunda/javaagent/jmx_custom_config.yaml

opentelemetry/compose.yml

@@ -0,0 +1,31 @@
+services:
+  cibseven:
+    image: cibseven/cibseven:tomcat-amd64
+    container_name: cibseven
+    environment:
+      OTEL_METRICS_EXPORTER: "otlp"
+      OTEL_LOGS_EXPORTER: "otlp"
+      OTEL_TRACES_EXPORTER: "otlp"
+      OTEL_EXPORTER_OTLP_ENDPOINT: "http://otel-collector:4318"
+    ports:
+      - 8080:8080
+      - 9464:9464
+    depends_on:
+      otel-collector:
+        condition: service_started
+    networks:
+      - otelnet
+
+  otel-collector:
+    image: otel/opentelemetry-collector:latest
+    container_name: otel-collector
+    ports:
+      - "4318:4318"
+    command: ["--config=/etc/otel-collector-config.yaml"]
+    volumes:
+      - ./otel-collector-config.yaml:/etc/otel-collector-config.yaml
+    networks:
+      - otelnet
+
+networks:
+  otelnet:

opentelemetry/jmx_config.yaml

@@ -0,0 +1,51 @@
+rules:
+  - bean: java.lang:type=OperatingSystem
+    mapping:
+      AvailableProcessors:
+        metric: java_lang_operatingsystem_availableprocessors
+        type: updowncounter
+        desc: java_lang_operatingsystem_availableprocessors
+      ProcessCpuLoad:
+        metric: java_lang_operatingsystem_processcpuload 
+        type: updowncounter
+        desc:  java_lang_operatingsystem_processcpuload. The recent cpu usage for the Java Virtual Machine process.
+      SystemCpuLoad:
+        metric: java_lang_operatingsystem_systemcpuload
+        type: updowncounter
+        desc:  java_lang_operatingsystem_systemcpuload. The recent cpu usage for the whole system.
+      ProcessCpuTime:
+        metric: java_lang_operatingsystem_processcputime
+        type: updowncounter
+        desc:  java_lang_operatingsystem_processcputime
+      SystemLoadAverage:
+        metric: java_lang_operatingsystem_systemloadaverage
+        type: updowncounter
+        desc:  java_lang_operatingsystem_systemloadaverage
+      CommittedVirtualMemorySize:
+        metric: java_lang_operatingsystem_committedvirtualmemorysize
+        type: updowncounter
+        desc: java_lang_operatingsystem_committedvirtualmemorysize
+      FreePhysicalMemorySize:
+        metric: java_lang_operatingsystem_freephysicalmemorysize
+        type: updowncounter
+        desc:  java_lang_operatingsystem_freephysicalmemorysize
+      TotalPhysicalMemorySize:
+        metric: java_lang_operatingsystem_totalphysicalmemorysize
+        type: updowncounter
+        desc:  java_lang_operatingsystem_totalphysicalmemorysize
+      FreeSwapSpaceSize:
+        metric: java_lang_operatingsystem_freeswapspacesize
+        type: updowncounter
+        desc:  java_lang_operatingsystem_freeswapspacesize
+      TotalSwapSpaceSize:
+        metric: java_lang_operatingsystem_totalswapspacesize
+        type: updowncounter
+        desc:  java_lang_operatingsystem_totalswapspacesize
+      OpenFileDescriptorCount:
+        metric: java_lang_operatingsystem_openfiledescriptorcount
+        type: updowncounter
+        desc:  java_lang_operatingsystem_openfiledescriptorcount
+      MaxFileDescriptorCount:
+        metric: java_lang_operatingsystem_maxfiledescriptorcount
+        type: updowncounter
+        desc:  java_lang_operatingsystem_maxfiledescriptorcount

opentelemetry/otel-collector-config.yaml

@@ -0,0 +1,21 @@
+receivers:
+  otlp:
+    protocols:
+      http:
+        endpoint: "0.0.0.0:4318"
+
+exporters:
+  debug:
+    verbosity: detailed
+
+service:
+  pipelines:
+    traces:
+      receivers: [otlp]
+      exporters: [debug]
+    metrics:
+      receivers: [otlp]
+      exporters: [debug]
+    logs:
+      receivers: [otlp]
+      exporters: [debug]