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README.md

Maven Central javadoc

XPipe Beacon

The XPipe beacon component is responsible for handling all communications between the XPipe daemon and the APIs and the CLI. It provides an API that supports all kinds of different operations.

For a full documentation, see the OpenAPI spec

Inner Workings

  • The underlying communication is realized through an HTTP server on port 21721

  • The data structures and exchange protocols are specified in the io.xpipe.beacon.api package.

  • Every exchange is initiated from the outside by sending a request message to the XPipe daemon. The daemon then always sends a response message.

  • The body of a message is usually formatted in the json format. As a result, all data structures exchanged must be serializable/deserializable with jackson.

Configuration

Custom port

The default port can be changed by passing the property io.xpipe.beacon.port=<port> to the daemon. Note that if both sides do not have the same port setting, they won't be able to reach each other.

Custom launch command

The beacon API also supports launching the daemon automatically in case it is not started yet. By default, it launches the daemon of the local XPipe installation. It is possible to pass a custom launch command with the property io.xpipe.beacon.customDaemonCommand=<cmd> and pass arguments to it using the property io.xpipe.beacon.daemonArgs=<args>. This allows for a custom launch behaviour in a testing/development environment. Note that the <cmd> value has to be a single property string, which can be prone to formatting errors

Verbose output

By passing the property io.xpipe.beacon.printMessages=true, it is possible to print debug information about the underlying communications. In case the io.xpipe.beacon.printDaemonOutput property is set, the output of the daemon can also be printed by passing the property io.xpipe.beacon.debugExecOutput=true.

Daemon debug mode

In case the daemon is started by the beacon, it is possible to customize in which mode the daemon will start up. By passing the property io.xpipe.beacon.launchDebugDaemon=true, the daemon is started in debug mode, i.e. will log more information and enable a few other options. By passing the property io.xpipe.beacon.attachDebuggerToDaemon=true, it is possible to launch a daemon in a mode where it is waiting to attach to a debugger first prior to starting up.