Example that shows how to implement a Selenium Grid capability matcher updated to latest version of Selenium Server (old implementation of a tutorial that can be found here). With this matcher you can use the hub for Appium Node and choose a node based on deviceName capability.

It will be placed in the target folder

    $ mvn -DskipTests=true package

1. Download Selenium Server 3.13

  $ wget https://goo.gl/4g538W

1. Start the hub with a the specific configuration

  $ java -cp selenium-server-standalone-3.13.0.jar;custom-capability-matcher-1.0-SNAPSHOT.jar; org.openqa.grid.selenium.GridLauncherV3 -capabilityMatcher com.example.selenium.matcher.MobileCapabilityMatcher -role hub -debug -hubConfig hubConfig.json

1. Start the foo node for S6 mobile phone

  $ java -jar selenium-server-standalone-2.53.0.jar -role node -hub http://localhost:4444/grid/register -nodeConfig src/main/resources/nodeConfig_foo.json

1. Start the bar node for Nexus phone

  $ java -cp selenium-server-standalone-3.13.0.jar;custom-capability-matcher-1.0-SNAPSHOT.jar; org.openqa.grid.selenium.GridLauncherV3  -role node -hub http://localhost:4444/grid/register -debug -nodeConfig nodeConfig_foo.json

  $ mvn test

Change this line to see the matcher in action by:

• Either setting deviceName capability to S6 or NEXUS and see the test getting executed in the desired node.
• Or setting nodeName to a different value and seeing the Grid reject the request because no node matches the capabilities.