feat: add support for java 21 and include jfr (#20)

* feat: add support for java 21

* add scanning

* nit

* address comments

Author: Kishan Sairam Adapa

.github/workflows/pr-build.yml

@@ -36,10 +36,10 @@ jobs:
           category: java-11
           output-mode: github
 
-      - name: Scan java-14 image
+      - name: Scan java-21 image
         uses: hypertrace/github-actions/trivy-image-scan@main
         with:
           image: hypertrace/java
-          tag: 14
-          category: java-14
+          tag: 21
+          category: java-21
           output-mode: github

java-11/Dockerfile

@@ -21,6 +21,8 @@ java.management,\
 jdk.jdwp.agent,\
 # JVM metrics such as garbage collection
 jdk.management,\
+# JFR for live monitoring, adds < 1MB to size
+jdk.jfr,jdk.management.jfr,\
 # prevents us from needing a different base layer for kafka-zookeeper
 # ZooKeeper needs jdk.management.agent, and adding it is 900K vs 200M for a different base layer
 jdk.management.agent,\
@@ -41,8 +43,8 @@ java.net.http,\
 jdk.zipfs\
  --output jre
 
-# We extract JRE's hard dependencies, libz and SSL certs, from the fat JRE image.
-FROM gcr.io/distroless/java:11-debug AS deps
+# Extract java SSL certs
+FROM gcr.io/distroless/java-base-debian12:debug AS ssl
 
 FROM amd64/debian:bookworm-slim As builder
 RUN apt update && apt install -y libjemalloc-dev
@@ -56,13 +58,14 @@ SHELL ["/busybox/sh", "-c"]
 
 RUN ln -s /busybox/sh /bin/sh
 
-COPY --from=deps /etc/ssl/certs/java /etc/ssl/certs/java
+COPY --from=ssl /etc/ssl/certs/java /etc/ssl/certs/java
 
-COPY --from=deps /lib/x86_64-linux-gnu/libz.so.1.2.11 /lib/x86_64-linux-gnu/libz.so.1.2.11
+COPY --from=jre /lib/x86_64-linux-gnu/libz.so.1.2.11 /lib/x86_64-linux-gnu/libz.so.1.2.11
 RUN ln -s /lib/x86_64-linux-gnu/libz.so.1.2.11 /lib/x86_64-linux-gnu/libz.so.1
 
 COPY --from=jre /jre /usr/lib/jvm/zulu-11-amd64-slim
 RUN ln -s /usr/lib/jvm/zulu-11-amd64-slim/bin/java /usr/bin/java
+RUN ln -s /usr/lib/jvm/zulu-11-amd64-slim/bin/jfr /usr/bin/jfr
 
 # change rocksdb default memory allocator
 # https://docs.confluent.io/platform/current/streams/developer-guide/memory-mgmt.html#rocksdb

java-14/Dockerfile renamed to java-21/Dockerfile

@@ -21,6 +21,8 @@ java.management,\
 jdk.jdwp.agent,\
 # JVM metrics such as garbage collection
 jdk.management,\
+# JFR for live monitoring, adds < 1MB to size
+jdk.jfr,jdk.management.jfr,\
 # prevents us from needing a different base layer for kafka-zookeeper
 # ZooKeeper needs jdk.management.agent, and adding it is 900K vs 200M for a different base layer
 jdk.management.agent,\
@@ -41,9 +43,13 @@ java.net.http,\
 jdk.zipfs\
  --output jre
 
-# We extract JRE's hard dependencies, libz and SSL certs, from the fat JRE image.
-FROM gcr.io/distroless/java:11-debug AS deps
+# Extract java SSL certs
+FROM gcr.io/distroless/java-base-debian12:debug AS ssl
 
+FROM amd64/debian:bookworm-slim As builder
+RUN apt update && apt install -y libjemalloc-dev
+
+# Debian-12 image
 FROM gcr.io/distroless/cc-debian12:debug
 
 MAINTAINER Hypertrace "https://www.hypertrace.org/"
@@ -52,15 +58,21 @@ SHELL ["/busybox/sh", "-c"]
 
 RUN ln -s /busybox/sh /bin/sh
 
-COPY --from=deps /etc/ssl/certs/java /etc/ssl/certs/java
+COPY --from=ssl /etc/ssl/certs/java /etc/ssl/certs/java
 
-COPY --from=deps /lib/x86_64-linux-gnu/libz.so.1.2.11 /lib/x86_64-linux-gnu/libz.so.1.2.11
+COPY --from=jre /lib/x86_64-linux-gnu/libz.so.1.2.11 /lib/x86_64-linux-gnu/libz.so.1.2.11
 RUN ln -s /lib/x86_64-linux-gnu/libz.so.1.2.11 /lib/x86_64-linux-gnu/libz.so.1
 
-COPY --from=jre /jre /usr/lib/jvm/zulu-14-amd64-slim
-RUN ln -s /usr/lib/jvm/zulu-14-amd64-slim/bin/java /usr/bin/java
+COPY --from=jre /jre /usr/lib/jvm/zulu-21-amd64-slim
+RUN ln -s /usr/lib/jvm/zulu-21-amd64-slim/bin/java /usr/bin/java
+RUN ln -s /usr/lib/jvm/zulu-21-amd64-slim/bin/jfr /usr/bin/jfr
+
+# change rocksdb default memory allocator
+# https://docs.confluent.io/platform/current/streams/developer-guide/memory-mgmt.html#rocksdb
+COPY --from=builder /usr/lib/x86_64-linux-gnu/libjemalloc* /usr/lib/x86_64-linux-gnu/
+ENV LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libjemalloc.so
 
 # set JAVA_HOME
-ENV JAVA_HOME=/usr/lib/jvm/zulu-14-amd64-slim
+ENV JAVA_HOME=/usr/lib/jvm/zulu-21-amd64-slim
 
 ENTRYPOINT ["/usr/bin/java", "-jar"]

java-14/build.gradle.kts renamed to java-21/build.gradle.kts

@@ -2,7 +2,7 @@ plugins {
   id("org.hypertrace.docker-publish-plugin")
 }
 
-var javaVersion = "14.0.2-14.29.23"
+var javaVersion = "21.0.0-21.28.85"
 
 hypertraceDocker {
   defaultImage {

settings.gradle.kts

@@ -7,4 +7,4 @@ pluginManagement {
 }
 
 include(":java-11")
-include(":java-14")
+include(":java-21")