WildFly CLI Implementation Details
Internal
Client Connection
org.jboss.as.cli.CommandLineMain.main(…) is executed first. This invokes org.jboss.as.cli.impl. CliLauncher.main(…).
This one creates a command context and initializes it as follows:
CommandContext cmdCtx =
CommandContextFactory.getInstance().newCommandContext(defaultHost,
defaultPort,
username,
password,
disableLocalAuth,
initConsole,
connect,
connectionTimeout);
Connection to the CLI server is implemented by invoking:
cmdCtx.connectController();
CommandContextImpl.connectController() creates the client, which is a ModelControllerClient instance, authenticates and installs the client.
The command line loop is implemented in cmdCtx.interact(), see Command Line Loop below.
Authentication
The CLI client loads implementations of the interface javax.security.sasl.SaslClientFactory:
package org.xnio.sasl;
public final class SaslUtils {
...
private static <T> Iterator<T> getFactories(Class<T> type, ClassLoader classLoader, boolean includeGlobal) {
Set<T> factories = new LinkedHashSet<T>();
final ServiceLoader<T> loader = ServiceLoader.load(type, classLoader);
for (T factory : loader) {
factories.add(factory);
}
...
}
Local user authentication will be available to CLI is org.jboss.sasl.localuser.LocalUserClientFactory is present in the class path.
This materializes if ${JBOSS_HOME}/bin/client/jboss-cli-client.jar is in the class path.
Command Line Loop
org.jboss.as.cli.impl.CommandContextImpl.interact()
Interactions with the model controller consists in sending ModelNode instances. For example, a ModelNode associated with :read-attribute(name=release-version) is:
{
"address" => [], "operation" => "read-attribute", "name" => "release-version"
}
The CommandContextImpl instance has just one “operation request”, which is a ModelNode instance. As part of the sequence of being sent to the server, the ModelInstance is installed in the CommandContextImpl instance map, under the “OP_REQ” key.
Then, the operationHandler.handle() is invoked on the CommandContextImpl instance (CommandContextImpl.java line 638).
OperationRequestHandler instance handle(): • gets the ModelControllerClient instance from the context • validates the request • “executes” the request by invoking client.execute(request)
If the result is a success, it is simply displayed.