Enable Application Insights

Author: Joonas Hiltunen

Dockerfile

@@ -16,6 +16,9 @@ RUN mvn -Pprod -DskipTests=true clean package spring-boot:repackage
 
 FROM eclipse-temurin:25.0.1_8-jre
 
+# Application Insights version
+ARG APPINSIGHTS_VERSION=3.7.7
+
 RUN apt-get update && apt-get install -y curl
 
 # expose server port
@@ -24,14 +27,19 @@ EXPOSE 8080
 # download script for reading Docker secrets
 ADD --chmod=755 https://raw.githubusercontent.com/HSLdevcom/jore4-tools/main/docker/read-secrets.sh /tmp/read-secrets.sh
 
+# Connection string is provided as env in Kubernetes by secrets manager
+# it should not be provided for other environments (local etc)
+ADD --chmod=755 https://github.com/microsoft/ApplicationInsights-Java/releases/download/${APPINSIGHTS_VERSION}/applicationinsights-agent-${APPINSIGHTS_VERSION}.jar /usr/src/jore4-timetables/applicationinsights-agent.jar
+COPY --chmod=755 ./applicationinsights.json /usr/src/jore4-timetables/applicationinsights.json
+
 # copy over helper scripts
 COPY --chmod=755 ./script/build-jdbc-urls.sh /tmp/
 
 # copy compiled jar from builder stage
 COPY --from=builder /build/target/*.jar /usr/src/jore4-timetables/jore4-timetables.jar
 
 # read Docker secrets into environment variables and run application
-CMD ["/bin/bash", "-c", "source /tmp/read-secrets.sh && source /tmp/build-jdbc-urls.sh && java -jar /usr/src/jore4-timetables/jore4-timetables.jar"]
+CMD ["/bin/bash", "-c", "source /tmp/read-secrets.sh && source /tmp/build-jdbc-urls.sh && java -javaagent:/usr/src/jore4-timetables/applicationinsights-agent.jar -jar /usr/src/jore4-timetables/jore4-timetables.jar"]
 
 HEALTHCHECK --interval=1m --timeout=5s \
   CMD curl --fail http://localhost:8080/actuator/health

applicationinsights.json

@@ -0,0 +1,5 @@
+{
+  "role": {
+    "name": "jore4-timetables"
+  }
+}