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PlantUML Server

GNU GENERAL PUBLIC LICENSE, Version 3, 29 June 2007 latest tag workflow status (Main) workflow status (Tests)

online rate peak

GitHub Sponsors docker pulls Docker Image Size (Jetty) Docker Image Size (Tomcat)

PlantUML Server is a web application to generate UML diagrams on-the-fly.

PlantUML is not affected by the log4j vulnerability.

Breaking changes:
The PlantUML core removed the deprecated ALLOW_PLANTUML_INCLUDE environment property feature and switch to the PLANTUML_SECURITY_PROFILE concept with version v1.2023.9. All details about PlantUML's security can be found on https://plantuml.com/security.

By default PlantUML server sets the PLANTUML_SECURITY_PROFILE to INTERNET. If you need more access to e.g. other ports than 80 (http) and 443 (https) or even access to local files, please consider using one of the allowlist features. It is strongly advised not to set the PLANTUML_SECURITY_PROFILE below INTERNET!

PlantUML Server

More examples and features about the Web UI can be found in docs/WebUI.

To know more about PlantUML, please visit https://plantuml.com.

Requirements

  • jre/jdk 11 or above
  • apache maven 3.0.2 or above

Recommendations

  • Jetty 11 or above
  • Tomcat 10 or above

How to run the server

Just run:

mvn jetty:run

The server is now listening to http://localhost:8080/plantuml. In this way the server is run on an embedded jetty server.

You can specify the port at which it runs:

mvn jetty:run -Djetty.http.port=9999

How to run the server with Docker

You can run Plantuml with jetty or tomcat container

docker run -d -p 8080:8080 plantuml/plantuml-server:jetty
docker run -d -p 8080:8080 plantuml/plantuml-server:tomcat

The server is now listening to http://localhost:8080.

Read-only container

The jetty container supports read-only files system, you can run the read-only mode with:

docker run -d -p 8080:8080 --read-only -v /tmp/jetty plantuml/plantuml-server:jetty

This makes the container compatible with more restricted environment such as OpenShift, just make sure you mount a volume (can be ephemeral) on /tmp/jetty.

Change base URL

To run plantuml using different base url, change the docker-compose.yml file:

environment:
  - BASE_URL=plantuml

And run docker-compose up. This will start a modified version of the image using the base url /plantuml, e.g. http://localhost:8080/plantuml

How to set PlantUML options

You can apply some option to your PlantUML server with environment variable.

If you run the directly the jar:

# NOTE: jetty-runner is deprecated.
# build war file and jetty-runner
mvn package
# start directly
# java $JVM_ARGS -jar jetty-runner.jar $JETTY_ARGS
java -jar target/dependency/jetty-runner.jar --config src/main/config/jetty.xml --port 9999 --path /plantuml target/plantuml.war
# see help for more possible options
java -jar target/dependency/jetty-runner.jar --help

Note: --config src/main/config/jetty.xml is only necessary if you need support for empty path segments in URLs (e.g. for the old proxy)

Alternatively, start over maven and pass the option with -D flag

mvn jetty:run -D THE_ENV_VARIABLE=THE_ENV_VALUE -Djetty.http.port=9999

If you use docker, you can use the -e flag:

docker run -d -p 9999:8080 -e THE_ENV_VARIABLE=THE_ENV_VALUE plantuml/plantuml-server:jetty

You can set all the following variables:

  • BASE_URL
    • PlantUML Base URL path
    • Default value: ROOT
  • PLANTUML_SECURITY_PROFILE
    • Set PlantUML security profile. See PlantUML security.
    • If you need more access to e.g. other ports than 80 (http) and 443 (https) or even access to local files, please consider using one of the allowlist features:
      • plantuml.allowlist.path
      • plantuml.include.path
      • plantuml.allowlist.url
    • It is strongly advised not to set the PLANTUML_SECURITY_PROFILE below INTERNET!
    • Default value: INTERNET
  • PLANTUML_PROPERTY_FILE
    • Set PlantUML system properties (like over the Java command line using the -Dpropertyname=value syntax).
    • To see what kind of file content is supported, see the documentation of java.util.Properties.load.
    • Default value: null
  • PLANTUML_CONFIG_FILE
    • Local path to a PlantUML configuration file (identical to the -config flag on the CLI)
    • File content will be added before each PlantUML diagram code.
    • Default value: null
  • PLANTUML_LIMIT_SIZE
    • Limits image width and height
    • Default value: 4096
  • PLANTUML_STATS
  • HTTP_AUTHORIZATION
    • when calling the proxy endpoint, the value of HTTP_AUTHORIZATION will be used to set the HTTP Authorization header
    • Default value: null
  • HTTP_PROXY_READ_TIMEOUT
    • when calling the proxy endpoint, the value of HTTP_PROXY_READ_TIMEOUT will be the connection read timeout in milliseconds
    • Default value: 10000 (10 seconds)

Alternate: How to build your docker image

This method uses maven to run the application. That requires internet connectivity. So, you can use following command to create a self-contained docker image that will "just work".

docker image build -f Dockerfile.jetty -t plantuml-server:local .
docker run -d -p 8080:8080 plantuml-server:local

The server is now listening to http://localhost:8080.

You may specify the port in -p Docker command line argument.

How to generate the war

To build the war, just run:

mvn package

at the root directory of the project to produce plantuml.war in the target/ directory.

NOTE: If you want that the generated war includes the apache-jsp artifact run:

mvn package -Dapache-jsp.scope=compile

If you want to generate the war with java 8 as target just remove the src/test directory and use pom.jdk8.xml.

rm -rf src/test
mvn package -f pom.jdk8.xml [-Dapache-jsp.scope=compile]

Use with reverse-proxy

It is possible to use PlantUML with a reverse proxy.

You can find this and other examples here.