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 * Copyright (c) 2017-2021 Payara Foundation and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://github.com/payara/Payara/blob/master/LICENSE.txt
 * See the License for the specific
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 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/legal/LICENSE.txt.
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 * GPL Classpath Exception:
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 * exception as provided by the Payara Foundation in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
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package fish.payara.admin.cluster;

import com.sun.enterprise.config.serverbeans.ApplicationRef;
import com.sun.enterprise.config.serverbeans.Domain;
import com.sun.enterprise.config.serverbeans.ResourceRef;
import com.sun.enterprise.config.serverbeans.Server;
import fish.payara.enterprise.config.serverbeans.DGServerRef;
import fish.payara.enterprise.config.serverbeans.DeploymentGroup;
import fish.payara.enterprise.config.serverbeans.DeploymentGroups;
import java.util.Arrays;
import java.util.List;
import jakarta.inject.Inject;
import org.glassfish.api.ActionReport;
import org.glassfish.api.I18n;
import org.glassfish.api.Param;
import org.glassfish.api.admin.AdminCommand;
import org.glassfish.api.admin.AdminCommandContext;
import org.glassfish.api.admin.CommandRunner;
import org.glassfish.api.admin.ExecuteOn;
import org.glassfish.api.admin.FailurePolicy;
import org.glassfish.api.admin.ParameterMap;
import org.glassfish.api.admin.RestEndpoint;
import org.glassfish.api.admin.RestEndpoints;
import org.glassfish.api.admin.RuntimeType;
import org.glassfish.api.admin.ServerEnvironment;
import org.glassfish.hk2.api.PerLookup;
import org.jvnet.hk2.annotations.Service;
import org.jvnet.hk2.config.ConfigSupport;
import org.jvnet.hk2.config.TransactionFailure;

/**
 * Adds an instance to a deployment group
 *
 * @since 5.0
 * @author Steve Millidge (Payara Foundation)
 */
@Service(name = "remove-instance-from-deployment-group")
@I18n("remove.instance.from.deployment.group")
@PerLookup
@ExecuteOn(value={RuntimeType.ALL}, ifFailure = FailurePolicy.Ignore, ifOffline = FailurePolicy.Ignore, ifNeverStarted = FailurePolicy.Ignore)
@RestEndpoints({
    @RestEndpoint(configBean = DeploymentGroups.class,
            opType = RestEndpoint.OpType.POST,
            path = "remove-instance-from-deployment-group",
            description = "Remove Instance From a Deployment Group")
})
public class RemoveInstanceFromDeploymentGroupCommand implements AdminCommand {

    @Param(name = "instance")
    String instanceName;

    @Param(name = "deploymentGroup")
    String deploymentGroupName;

    @Inject
    private Domain domain;

    @Inject
    ServerEnvironment env;

    @Inject
    CommandRunner commandRunner;

    @Override
    public void execute(AdminCommandContext context) {
        ActionReport report = context.getActionReport();

        DeploymentGroup deploymentGroup = domain.getDeploymentGroupNamed(deploymentGroupName);
        if (deploymentGroup == null) {
            report.setActionExitCode(ActionReport.ExitCode.FAILURE);
            report.setMessage("Deployment Group " + deploymentGroupName + " does not exist");
            return;
        }

        List instances = Arrays.asList(instanceName.split(","));

        for (String instance : instances) {
            Server server = domain.getServerNamed(instance);

            if (server == null) {
                report.setActionExitCode(ActionReport.ExitCode.FAILURE);
                report.setMessage("Instance " + instance + " does not exist");
                return;
            }

            DGServerRef deploymentGroupServerRef = deploymentGroup.getDGServerRefByRef(instance);
            if (deploymentGroupServerRef == null) {
                report.setActionExitCode(ActionReport.ExitCode.FAILURE);
                report.setMessage("Deployment Group " + deploymentGroupName + " does not contain server " + instance);
                return;
            }

            // OK set up the reference
            try {
                ConfigSupport.apply((DeploymentGroup dg1) -> {
                    dg1.getDGServerRef().remove(deploymentGroupServerRef);
                    return null;
                }, deploymentGroup);

            } catch (TransactionFailure e) {
                report.setMessage("Failed to remove instance from the deployment group");
                report.setActionExitCode(ActionReport.ExitCode.FAILURE);
                report.setFailureCause(e);
            }

            // now run the command to remove application deploymentGroupServerRef to the instance
            for (ApplicationRef applicationRef : deploymentGroup.getApplicationRef()) {
                CommandRunner.CommandInvocation inv = commandRunner.getCommandInvocation("delete-application-ref", report, context.getSubject());
                ParameterMap parameters = new ParameterMap();
                parameters.add("target", instance);
                parameters.add("name", applicationRef.getRef());
                inv.parameters(parameters).execute();
            }

            // now run the command to remove resource deploymentGroupServerRef to the instance
            for (ResourceRef resourceRef : deploymentGroup.getResourceRef()) {
                CommandRunner.CommandInvocation inv = commandRunner.getCommandInvocation("delete-resource-ref", report, context.getSubject());
                ParameterMap parameters = new ParameterMap();
                parameters.add("target", instance);
                parameters.add("reference_name", resourceRef.getRef());
                inv.parameters(parameters).execute();
            }

        }
    }
}




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