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https://github.com/openliberty/liberty-language-server

The Liberty Config Language Server provides language server features for Liberty server configuration files through any of the supported client IDEs.
https://github.com/openliberty/liberty-language-server

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The Liberty Config Language Server provides language server features for Liberty server configuration files through any of the supported client IDEs.

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README 

          
# Liberty Config Language Server



> Note: Starting with the [Liberty LemMinX Language Server 1.0-M1 early release](https://github.com/OpenLiberty/liberty-language-server/releases/tag/lemminx-liberty-1.0-M1) and [Liberty Config Language Server 1.0-M1 early release](https://github.com/OpenLiberty/liberty-language-server/releases/tag/liberty-langserver-1.0-M1), Java 17 is required.



The Liberty Config Language Server provides language server features for Liberty server configuration files through any of the supported client IDEs. It adheres to the [language server protocol](https://github.com/Microsoft/language-server-protocol).



## Client IDEs



The Liberty Config Language Server is included in the following client IDEs.



* [Liberty Tools for Visual Studio Code](https://github.com/OpenLiberty/liberty-tools-vscode)

* [Liberty Tools for Eclipse IDE](https://github.com/OpenLiberty/liberty-tools-eclipse)

* [Liberty Tools for IntelliJ IDEA](https://github.com/OpenLiberty/liberty-tools-intellij)



## Supported files



Liberty Config Language Server features are available for the following configuration files.



- Any XML file that contains a `server` root element.

- A `server.env` file located in a directory specified by the `configDirectory` configuration in the Liberty Maven or Gradle plugin, or in the default `src/main/liberty/config` directory.

- Any file with the extension `.env` that is specified by the `serverEnvFile` configuration in the Liberty Maven or Gradle plugin.

- A `bootstrap.properties` file located in a directory specified by the `configDirectory` configuration in the Liberty Maven or Gradle plugin, or in the default `src/main/liberty/config` directory.

- Any file with the extension `.properties` that is specified by the `bootstrapPropertiesFile` configuration in the Liberty Maven or Gradle plugin.



## Features



The following language server features are available through any of the supported client IDEs.



### Completion for Liberty server configuration files



Start typing a Liberty property, variable, or XML configuration to view a list of possible options.



* Completion for Liberty properties and values 



![Screen capture of Liberty property name suggestions in a bootstrap.properties file](./docs/images/property-completion.png "Completion suggestions for Liberty properties in bootstrap.properties") 

![Screen capture of value suggestions for a Liberty property in a bootstrap.properties file. If there is a default value, it is preselected.](./docs/images/property-value-completion.png "Completion suggestions for Liberty property values in bootstrap.properties")

* Completion for Liberty variables and values 



![Screen capture of Liberty variable suggestions in a server.env file](./docs/images/variable-completion.png "Completion suggestions for Liberty variables in server.env")

![Screen capture of value suggestions for a Liberty variable in a server.env file. If there is a default value, it is preselected](./docs/images/variable-value-completion.png "Completion suggestions for Liberty variable values in server.env")

* Completion for Liberty XML configs



![Screen capture of Liberty feature suggestions in a feature block in a server.xml file](./docs/images/feature-completion.png "Completion suggestions for Liberty configuration in server.xml")



### Hover on Liberty server configuration files



Hover your cursor over Liberty properties, variables, or XML configuration to view a description.



* Hover for Liberty properties and variables



![Screen capture of a documentation dialog appearing when hovering over a Liberty property in a bootstrap.properties file](./docs/images/property-hover.png "Hover on Liberty properties in bootstrap.properties")

![Screen capture of a documentation dialog appearing when hovering over a Liberty variable in a server.env file](./docs/images/variable-hover.png "Hover on Liberty server variables in server.env")



* Hover for Liberty XML configs



![Screen capture of feature documentation appearing when hovering over a Liberty feature in a server.xml file](./docs/images/feature-hover.png "Hover on Liberty features in server.xml")



### Diagnostics and quick fixes on Liberty server configuration files



Diagnostics highlight potential problems in your configuration, such as invalid values. Quick fixes provide potential solutions to those problems.



* Diagnostics on Liberty properties and variables



![Screen capture showing diagnostics marking an invalid value for a Liberty property in a bootstrap.properties file. Hovering over the diagnostic will provide more details.](./docs/images/property-diagnostic.png "Diagnostics on Liberty properties in bootstrap.properties")

![Screen capture showing diagnostics marking an invalid value for a Liberty variable in a server.env file. Hovering over the diagnostic will provide more details.](./docs/images/variable-diagnostic.png "Diagnostics on Liberty variables in server.env")



* Diagnostics and quick fixes for Liberty XML configs



![Screen capture showing diagnostics marking an invalid feature defined in a server.xml file. Hovering over the diagnostic will provide more details.](./docs/images/feature-diagnostic.png "Diagnostics on Liberty features in server.xml")



![Screen capture showing a quick fix for a diagnostic on an invalid feature defined in a server.xml file. Hovering over the diagnostic and selecting Quick Fix... will provide more details.](./docs/images/feature-quickFix.png "Quick fixes on Liberty features in server.xml")



![Screen capture showing diagnostics marking an configuration element defined in a server.xml file. Hovering over the diagnostic will provide more details.](./docs/images/config-diagnostic.png "Diagnostics on configuration elements in server.xml")



![Screen capture showing a quick foix for a diagnostics on a configuration element defined in a server.xml file. Hovering over the diagnostic and selecting Quick Fix... will provide more details.](./docs/images/config-quickFix.png "Quick fixes on configuration elements in server.xml")



## Minimum version recommendations for the Liberty Maven and Gradle plug-ins



A minimum version of the Liberty Maven Plug-in 3.7.1 or Liberty Gradle Plug-in 3.5.1 is recommended. If the [Liberty Maven Plug-in](https://github.com/OpenLiberty/ci.maven) or [Liberty Gradle Plug-in](https://github.com/OpenLiberty/ci.gradle) is configured with the Liberty project, the Liberty Config Language Server automatically generates a schema file based on the Liberty runtime and version. This schema file provides relevant information about the supported `server.xml` elements and Liberty features. If an earlier version of either plug-in is used, the schema file is not regenerated when additional features are installed. This limitation might result in a lack of hover, completion, or diagnostic support for elements related to those newly installed features.



If you are using dev mode for containers, a minimum version of the Liberty Maven Plug-in 3.7 or Liberty Gradle Plug-in 3.5 is recommended. If an earlier version is used, the Liberty Config Language Server cannot generate a schema file for use with `server.xml` editing. In this case, a default schema that is based on Liberty 23.0.0.9 is used instead.



## Contributing

See the [DEVELOPING](./DEVELOPING.md) and [CONTRIBUTING](./CONTRIBUTING.md) documents for more details.

## License

Eclipse Public License - v 2.0 See [LICENSE](./LICENSE) file.