97 lines
3.3 KiB
Markdown
97 lines
3.3 KiB
Markdown
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# PlantUML & GitLab
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> [Introduced][ce-8537] in GitLab 8.16.
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When [PlantUML](http://plantuml.com) integration is enabled and configured in
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GitLab we are able to create simple diagrams in AsciiDoc and Markdown documents
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created in snippets, wikis, and repos.
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## PlantUML Server
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Before you can enable PlantUML in GitLab; you need to set up your own PlantUML
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server that will generate the diagrams. Installing and configuring your
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own PlantUML server is easy in Debian/Ubuntu distributions using Tomcat.
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First you need to create a `plantuml.war` file from the source code:
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```
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sudo apt-get install graphviz openjdk-7-jdk git-core maven
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git clone https://github.com/plantuml/plantuml-server.git
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cd plantuml-server
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mvn package
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```
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The above sequence of commands will generate a WAR file that can be deployed
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using Tomcat:
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```
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sudo apt-get install tomcat7
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sudo cp target/plantuml.war /var/lib/tomcat7/webapps/plantuml.war
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sudo chown tomcat7:tomcat7 /var/lib/tomcat7/webapps/plantuml.war
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sudo service tomcat7 restart
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```
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Once the Tomcat service restarts the PlantUML service will be ready and
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listening for requests on port 8080:
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```
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http://localhost:8080/plantuml
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```
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you can change these defaults by editing the `/etc/tomcat7/server.xml` file.
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## GitLab
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You need to enable PlantUML integration from Settings under Admin Area. To do
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that, login with an Admin account and do following:
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- in GitLab go to **Admin Area** and then **Settings**
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- scroll to bottom of the page until PlantUML section
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- check **Enable PlantUML** checkbox
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- set the PlantUML instance as **PlantUML URL**
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## Creating Diagrams
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With PlantUML integration enabled and configured, we can start adding diagrams to
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our AsciiDoc snippets, wikis and repos using delimited blocks:
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```
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[plantuml, format="png", id="myDiagram", width="200px"]
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--
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Bob->Alice : hello
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Alice -> Bob : Go Away
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--
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```
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And in Markdown using fenced code blocks:
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```plantuml
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Bob -> Alice : hello
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Alice -> Bob : Go Away
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```
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The above blocks will be converted to an HTML img tag with source pointing to the
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PlantUML instance. If the PlantUML server is correctly configured, this should
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render a nice diagram instead of the block:
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Inside the block you can add any of the supported diagrams by PlantUML such as
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[Sequence](http://plantuml.com/sequence-diagram), [Use Case](http://plantuml.com/use-case-diagram),
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[Class](http://plantuml.com/class-diagram), [Activity](http://plantuml.com/activity-diagram-legacy),
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[Component](http://plantuml.com/component-diagram), [State](http://plantuml.com/state-diagram),
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and [Object](http://plantuml.com/object-diagram) diagrams. You do not need to use the PlantUML
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diagram delimiters `@startuml`/`@enduml` as these are replaced by the AsciiDoc `plantuml` block.
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Some parameters can be added to the AsciiDoc block definition:
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- *format*: Can be either `png` or `svg`. Note that `svg` is not supported by
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all browsers so use with care. The default is `png`.
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- *id*: A CSS id added to the diagram HTML tag.
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- *width*: Width attribute added to the img tag.
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- *height*: Height attribute added to the img tag.
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Markdown does not support any parameters and will always use PNG format.
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[ce-8537]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/8537
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