inteligr8/jdk-hotswap-docker
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made hotswap/jdwp disablable

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This commit is contained in:
Brian Long
2021-04-22 21:29:28 -04:00
parent 2a1ce87bfc
commit afe871cc05
5 changed files with 23 additions and 3 deletions
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2
Dockerfile
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@@ -7,6 +7,8 @@ ENV JAVA_MEMORY_MAX=512m
ENV JAVA_HOME=/usr/local/lib/jvm/java-openjdk-dcevm ENV JAVA_HOME=/usr/local/lib/jvm/java-openjdk-dcevm
ENV JRE_HOME=/usr/local/lib/jvm/java-openjdk-dcevm ENV JRE_HOME=/usr/local/lib/jvm/java-openjdk-dcevm
ENV JAVA_OPTS= ENV JAVA_OPTS=
ENV ENABLE_HOTSWAP=true
ENV ENABLE_JDWP=true
# Install curl # Install curl
RUN apt update && apt -y install curl RUN apt update && apt -y install curl

10
README.md
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@@ -25,3 +25,13 @@ It is expected that containers are configured in Maven using the Fabric8 or Spot
| `/var/lib/jvm/dev/lib-extra7` | JARs | No | | `/var/lib/jvm/dev/lib-extra7` | JARs | No |
You may include your own `hotswap-agent.properties` in any of the `classes` folders. The one loaded by default is usually sufficient. You may include your own `hotswap-agent.properties` in any of the `classes` folders. The one loaded by default is usually sufficient.
You can specify the following environment variables when running the container.
| Environment Variable | Default Value | Description |
| -------------------- | ------------- | ----------- |
| `JAVA_MEMORY_INIT` | `128m` | The initial and minimum JVM memory. |
| `JAVA_MEMORY_MAX` | `512m` | The maximum JVM memory allowed. |
| `ENABLE_HOTSWAP` | `true` | Set to `false` to disable the HotSwap agent. |
| `ENABLE_JDWP` | `true` | Set to `false` to disable the Java debugger. |
| `JAVA_OPTS` | | Set to extend the standard `JAVA_OPTS` environment variable. |

8
docker-entrypoint.sh
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@@ -6,4 +6,12 @@ JAVA_CP="${JAVA_CP}:/var/lib/jvm/dev/classes:/var/lib/jvm/dev/classes-extra1:/va
JAVA_CP="${JAVA_CP}:/var/lib/jvm/dev/lib/*:/var/lib/jvm/dev/lib-extra1/*:/var/lib/jvm/dev/lib-extra2/*:/var/lib/jvm/dev/lib-extra3/*:/var/lib/jvm/dev/lib-extra4/*:/var/lib/jvm/dev/lib-extra5/*:/var/lib/jvm/dev/lib-extra6/*:/var/lib/jvm/dev/lib-extra7/*" JAVA_CP="${JAVA_CP}:/var/lib/jvm/dev/lib/*:/var/lib/jvm/dev/lib-extra1/*:/var/lib/jvm/dev/lib-extra2/*:/var/lib/jvm/dev/lib-extra3/*:/var/lib/jvm/dev/lib-extra4/*:/var/lib/jvm/dev/lib-extra5/*:/var/lib/jvm/dev/lib-extra6/*:/var/lib/jvm/dev/lib-extra7/*"
EXEC_JAVA_OPTS="${JAVA_OPTS} -classpath ${JAVA_CP}" EXEC_JAVA_OPTS="${JAVA_OPTS} -classpath ${JAVA_CP}"
if [ "${ENABLE_HOTSWAP}" = "true" ]; then
EXEC_JAVA_OPTS="${EXEC_JAVA_OPTS} ${HOTSWAP_JAVA_OPTS}"
fi
if [ "${ENABLE_JDWP}" = "true" ]; then
EXEC_JAVA_OPTS="${EXEC_JAVA_OPTS} ${JDWP_JAVA_OPTS}"
fi
exec ${JAVA_HOME}/bin/java ${EXEC_JAVA_OPTS} ${JAVA_CLASS} exec ${JAVA_HOME}/bin/java ${EXEC_JAVA_OPTS} ${JAVA_CLASS}

2
pom.xml
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@@ -15,7 +15,7 @@
<!-- The version of Java DCEVM to use for executing Apache Tomcat --> <!-- The version of Java DCEVM to use for executing Apache Tomcat -->
<!-- See: https://github.com/TravaOpenJDK/trava-jdk-11-dcevm/releases --> <!-- See: https://github.com/TravaOpenJDK/trava-jdk-11-dcevm/releases -->
<dcevm.version>11.0.10+4</dcevm.version> <dcevm.version>11.0.10+6</dcevm.version>
<dcevm.majorVersion>11</dcevm.majorVersion> <dcevm.majorVersion>11</dcevm.majorVersion>
<!-- The version of the Hotswap Agent to use --> <!-- The version of the Hotswap Agent to use -->

4
setenv.sh
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@@ -1,4 +1,4 @@
#!/bin/sh #!/bin/sh
JAVA_OPTS="${JAVA_OPTS} -Xms${JAVA_MEMORY_INIT} -Xmx${JAVA_MEMORY_MAX}" JAVA_OPTS="${JAVA_OPTS} -Xms${JAVA_MEMORY_INIT} -Xmx${JAVA_MEMORY_MAX}"
JAVA_OPTS="${JAVA_OPTS} -XX:HotswapAgent=external -javaagent:/usr/local/lib/jvm/hotswap-agent.jar" HOTSWAP_JAVA_OPTS="-XX:HotswapAgent=external -javaagent:/usr/local/lib/jvm/hotswap-agent.jar"
JAVA_OPTS="${JAVA_OPTS} -agentlib:jdwp=transport=dt_socket,address=8000,server=y,suspend=n" JDWP_JAVA_OPTS="-agentlib:jdwp=transport=dt_socket,address=8000,server=y,suspend=n"