org.soulwing.cas.deployment.DependenciesDeploymentProcessor Maven / Gradle / Ivy

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Wildfly subsystem that monitors web application deployments and attaches CAS authentication support.
There is a newer version: 2.0.3
/*
 * File created on Feb 17, 2015
 *
 * Copyright (c) 2015 Carl Harris, Jr.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */
package org.soulwing.cas.deployment;

import static org.soulwing.cas.deployment.DeploymentLogger.LOGGER;

import org.jboss.as.controller.OperationContext;
import org.jboss.as.server.AbstractDeploymentChainStep;
import org.jboss.as.server.DeploymentProcessorTarget;
import org.jboss.as.server.deployment.Attachments;
import org.jboss.as.server.deployment.DeploymentPhaseContext;
import org.jboss.as.server.deployment.DeploymentUnit;
import org.jboss.as.server.deployment.DeploymentUnitProcessingException;
import org.jboss.as.server.deployment.DeploymentUnitProcessor;
import org.jboss.as.server.deployment.Phase;
import org.jboss.as.server.deployment.module.ModuleDependency;
import org.jboss.as.server.deployment.module.ModuleSpecification;
import org.jboss.modules.Module;
import org.jboss.modules.ModuleIdentifier;
import org.jboss.modules.ModuleLoader;
import org.soulwing.cas.extension.Names;

/**
 * A {@link DeploymentUnitProcessor} that adds CAS dependencies to the 
 * deployment.
 */
public class DependenciesDeploymentProcessor implements DeploymentUnitProcessor {

  private static final Phase PHASE = Phase.DEPENDENCIES;

  private static final int PRIORITY = 0x8000;
  
  private static final DependenciesDeploymentProcessor INSTANCE =
      new DependenciesDeploymentProcessor();

  private DependenciesDeploymentProcessor() {
  }

  /**
   * Adds a step handler for a deployment chain step that adds an instance
   * of this processor to the deployment processor target.
   * @param context context to which the step handler will be added
   */
  public static void addStepHandler(OperationContext context) {
    context.addStep(new AbstractDeploymentChainStep() {
      public void execute(DeploymentProcessorTarget processorTarget) {
        processorTarget.addDeploymentProcessor(
            Names.SUBSYSTEM_NAME, PHASE, PRIORITY, INSTANCE);
      }
    }, OperationContext.Stage.RUNTIME);
  }

  @Override
  public void deploy(DeploymentPhaseContext phaseContext)
      throws DeploymentUnitProcessingException {
    
    DeploymentUnit deploymentUnit = phaseContext.getDeploymentUnit();
    AppConfiguration config = deploymentUnit.getAttachment(
        DeploymentAttachments.CAS_DESCRIPTOR);
    if (config == null || !config.isAddDependencies()) return;
    
    ModuleIdentifier moduleId = Module.getCallerModule().getIdentifier();
    ModuleLoader loader = Module.getBootModuleLoader();
    ModuleDependency dependency = new ModuleDependency(loader, moduleId, false,
        true, false, false);

    ModuleSpecification moduleSpec = phaseContext.getDeploymentUnit()
        .getAttachment(Attachments.MODULE_SPECIFICATION);
    moduleSpec.addSystemDependency(dependency);

    LOGGER.info("added CAS module dependency to deployment " 
        + deploymentUnit.getName());
  }
  
  @Override
  public void undeploy(DeploymentUnit context) {
  }

}