DetachComponent.java

/*
 * Copyright 2014 by SCSK Corporation.
 * 
 * This file is part of PrimeCloud Controller(TM).
 * 
 * PrimeCloud Controller(TM) is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 * 
 * PrimeCloud Controller(TM) is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with PrimeCloud Controller(TM). If not, see <http://www.gnu.org/licenses/>.
 */
package jp.primecloud.auto.api.component;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.QueryParam;
import javax.ws.rs.core.MediaType;

import jp.primecloud.auto.api.ApiSupport;
import jp.primecloud.auto.api.ApiValidate;
import jp.primecloud.auto.api.response.component.DetachComponentResponse;
import jp.primecloud.auto.common.status.ComponentInstanceStatus;
import jp.primecloud.auto.entity.crud.Component;
import jp.primecloud.auto.entity.crud.ComponentInstance;
import jp.primecloud.auto.entity.crud.Instance;
import jp.primecloud.auto.exception.AutoApplicationException;

import org.apache.commons.lang.BooleanUtils;

@Path("/DetachComponent")
public class DetachComponent extends ApiSupport {

    /**
     * サービスとインスタンスの紐づけの解除
     *
     * @param componentNo コンポーネント番号
     * @param instanceNo インスタンス番号
     * @return DetachComponentResponse
     */
    @GET
    @Produces(MediaType.APPLICATION_JSON)
    public DetachComponentResponse detachComponent(@QueryParam(PARAM_NAME_COMPONENT_NO) String componentNo,
            @QueryParam(PARAM_NAME_INSTANCE_NO) String instanceNo) {

        // 入力チェック
        // ComponentNo
        ApiValidate.validateComponentNo(componentNo);
        // InstanceNo
        ApiValidate.validateInstanceNo(instanceNo);

        // コンポーネント取得
        Component component = getComponent(Long.parseLong(componentNo));

        // 権限チェック
        checkAndGetUser(component);

        // インスタンス取得
        Instance instance = getInstance(Long.parseLong(instanceNo));

        if (BooleanUtils.isFalse(instance.getFarmNo().equals(component.getFarmNo()))) {
            //ファームとインスタンスが一致しない
            throw new AutoApplicationException("EAPI-100022", "Instance", component.getFarmNo(),
                    PARAM_NAME_INSTANCE_NO, instanceNo);
        }

        // 現在サービスに紐づいているサーバの一覧を取得する
        List<Long> instanceNos = new ArrayList<Long>();
        List<ComponentInstance> componentInstances = componentInstanceDao
                .readByComponentNo(Long.parseLong(componentNo));
        for (ComponentInstance componentInstance : componentInstances) {
            if (componentInstance.getInstanceNo().equals(Long.parseLong(instanceNo))) {
                ComponentInstanceStatus status = ComponentInstanceStatus.fromStatus(componentInstance.getStatus());
                if (status == ComponentInstanceStatus.RUNNING) {
                    // サービス起動中は割り当て解除できない
                    throw new AutoApplicationException("EAPI-100013", componentNo, instanceNo);
                }
            }
            if (!instanceNos.contains(componentInstance.getInstanceNo())) {
                instanceNos.add(componentInstance.getInstanceNo());
            }
        }

        // サーバの一覧から当該サーバのインスタンス番号を削除
        instanceNos.remove(Long.parseLong(instanceNo));

        // サービス割り当て解除するディスクがアタッチされたままのものがあるかどうかチェック
        String notSelectedItem;
        Collection<Object> moveList = new ArrayList<Object>();
        // 画面の再選択項目に使用するので値はなんでもよいが、値は必須
        notSelectedItem = instance.getInstanceName();
        // サービス画面でも同様の処理が必要の為、サービスに切り出す
        moveList = componentService.checkAttachDisk(component.getFarmNo(), Long.parseLong(componentNo),
                instance.getInstanceName(), notSelectedItem, moveList);
        if (!moveList.isEmpty()) {
            // アタッチされたままのものは、解除できない
            throw new AutoApplicationException("EAPI-100037", componentNo, instanceNo);
        }

        // サービスとサーバの紐づけ解除(プロセス処理)
        componentService.associateInstances(Long.parseLong(componentNo), instanceNos);

        DetachComponentResponse response = new DetachComponentResponse();

        return response;
    }

}