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Liberty Config Language Server

Note: Starting with the Liberty LemMinX Language Server 1.0-M1 early release and Liberty Config Language Server 1.0-M1 early release, 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.

Client IDEs

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

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 Screen capture of value suggestions for a Liberty property in a bootstrap.properties file. If there is a default value, it is preselected.

Completion for Liberty variables and values

Screen capture of Liberty variable suggestions in a server.env file Screen capture of value suggestions for a Liberty variable in a server.env file. If there is a default value, it is preselected

Completion for Liberty XML configs

Screen capture of Liberty feature suggestions in a feature block in a server.xml file

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

Hover for Liberty XML configs

Screen capture of feature documentation appearing when hovering over a Liberty feature in a server.xml file

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.

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.

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.

Screen capture showing diagnostics marking an configuration element defined in a server.xml file. Hovering over the diagnostic will provide more details.

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.

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 or Liberty Gradle Plug-in 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 and CONTRIBUTING documents for more details.

License

Eclipse Public License - v 2.0 See LICENSE file.