plantuml-server/README.md

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# PlantUML Server
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PlantUML Server is a web application to generate UML diagrams on-the-fly.
> [PlantUML is **not** affected by the log4j vulnerability.](https://github.com/plantuml/plantuml/issues/826)
> **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](https://raw.githubusercontent.com/plantuml/plantuml-server/master/docs/screenshot.png)
More examples and features about the Web UI can be found in [docs/WebUI](https://github.com/plantuml/plantuml-server/tree/master/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:
```sh
mvn jetty:run
```
The server is now listening to [http://localhost:8080/plantuml](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:
```sh
mvn jetty:run -Djetty.http.port=9999
```
## How to run the server with Docker
You can run Plantuml with jetty or tomcat container
```sh
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](http://localhost:8080).
### Read-only container
The jetty container supports read-only files system, you can run the read-only mode with:
```sh
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:
```yaml
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:
```sh
# 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
```sh
mvn jetty:run -D THE_ENV_VARIABLE=THE_ENV_VALUE -Djetty.http.port=9999
```
If you use docker, you can use the `-e` flag:
```sh
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](https://plantuml.com/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`](https://docs.oracle.com/javase/8/docs/api/java/util/Properties.html#load-java.io.Reader-).
* 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`
* Set it to `on` to enable [statistics report](https://plantuml.com/statistics-report)
* Default value: `off`
* `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".
```sh
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](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:
```sh
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:
```sh
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`.
```sh
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](https://github.com/plantuml/plantuml-server/tree/master/examples).