/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * 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.apache.hadoop.hdds.scm.cli;

import java.io.IOException;
import java.net.InetSocketAddress;

import org.apache.hadoop.conf.StorageUnit;
import org.apache.hadoop.hdds.HddsUtils;
import org.apache.hadoop.hdds.cli.GenericCli;
import org.apache.hadoop.hdds.cli.HddsVersionProvider;
import org.apache.hadoop.hdds.conf.OzoneConfiguration;
import org.apache.hadoop.hdds.scm.ScmConfigKeys;
import org.apache.hadoop.hdds.scm.XceiverClientManager;
import org.apache.hadoop.hdds.scm.cli.container.CloseSubcommand;
import org.apache.hadoop.hdds.scm.cli.container.CreateSubcommand;
import org.apache.hadoop.hdds.scm.cli.container.DeleteSubcommand;
import org.apache.hadoop.hdds.scm.cli.container.InfoSubcommand;
import org.apache.hadoop.hdds.scm.cli.container.ListSubcommand;
import org.apache.hadoop.hdds.scm.cli.pipeline.ActivatePipelineSubcommand;
import org.apache.hadoop.hdds.scm.cli.pipeline.ClosePipelineSubcommand;
import org.apache.hadoop.hdds.scm.cli.pipeline.DeactivatePipelineSubcommand;
import org.apache.hadoop.hdds.scm.cli.pipeline.CreatePipelineSubcommand;
import org.apache.hadoop.hdds.scm.cli.pipeline.ListPipelinesSubcommand;
import org.apache.hadoop.hdds.scm.client.ContainerOperationClient;
import org.apache.hadoop.hdds.scm.client.ScmClient;
import org.apache.hadoop.hdds.scm.container.ContainerInfo;
import org.apache.hadoop.hdds.scm.protocol.StorageContainerLocationProtocol;
import org.apache.hadoop.hdds.scm.protocolPB
    .StorageContainerLocationProtocolClientSideTranslatorPB;
import org.apache.hadoop.hdds.scm.protocolPB.StorageContainerLocationProtocolPB;
import org.apache.hadoop.hdds.tracing.TracingUtil;
import org.apache.hadoop.ipc.Client;
import org.apache.hadoop.ipc.ProtobufRpcEngine;
import org.apache.hadoop.ipc.RPC;
import org.apache.hadoop.net.NetUtils;
import org.apache.hadoop.ozone.OzoneConsts;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.util.NativeCodeLoader;

import org.apache.commons.lang3.StringUtils;
import static org.apache.hadoop.hdds.HddsUtils.getScmAddressForClients;
import static org.apache.hadoop.hdds.scm.ScmConfigKeys
    .OZONE_SCM_CLIENT_ADDRESS_KEY;
import static org.apache.hadoop.hdds.scm.ScmConfigKeys.OZONE_SCM_CONTAINER_SIZE;
import static org.apache.hadoop.hdds.scm.ScmConfigKeys
    .OZONE_SCM_CONTAINER_SIZE_DEFAULT;
import org.apache.log4j.ConsoleAppender;
import org.apache.log4j.Level;
import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;
import org.apache.log4j.PatternLayout;
import picocli.CommandLine.Command;
import picocli.CommandLine.Option;

/**
 * This class is the CLI of SCM.
 */

/**
 * Container subcommand.
 */
@Command(name = "ozone scmcli", hidden = true, description =
    "Developer tools to handle SCM specific "
        + "operations.",
    versionProvider = HddsVersionProvider.class,
    subcommands = {
        SafeModeCommands.class,
        ListSubcommand.class,
        InfoSubcommand.class,
        DeleteSubcommand.class,
        CreateSubcommand.class,
        CloseSubcommand.class,
        CreatePipelineSubcommand.class,
        ListPipelinesSubcommand.class,
        ActivatePipelineSubcommand.class,
        DeactivatePipelineSubcommand.class,
        ClosePipelineSubcommand.class,
        TopologySubcommand.class,
        ReplicationManagerCommands.class
    },
    mixinStandardHelpOptions = true)
public class SCMCLI extends GenericCli {

  @Option(names = {"--scm"}, description = "The destination scm (host:port)")
  private String scm = "";

  /**
   * Main for the scm shell Command handling.
   *
   * @param argv - System Args Strings[]
   * @throws Exception
   */
  public static void main(String[] argv) throws Exception {

    LogManager.resetConfiguration();
    Logger.getRootLogger().setLevel(Level.INFO);
    Logger.getRootLogger()
        .addAppender(new ConsoleAppender(new PatternLayout("%m%n")));
    Logger.getLogger(NativeCodeLoader.class).setLevel(Level.ERROR);

    new SCMCLI().run(argv);
  }

  public ScmClient createScmClient()
      throws IOException {

    OzoneConfiguration ozoneConf = createOzoneConfiguration();
    if (StringUtils.isNotEmpty(scm)) {
      ozoneConf.set(OZONE_SCM_CLIENT_ADDRESS_KEY, scm);
    }
    if (!HddsUtils.getHostNameFromConfigKeys(ozoneConf,
        ScmConfigKeys.OZONE_SCM_CLIENT_ADDRESS_KEY).isPresent()) {

      throw new IllegalArgumentException(
          ScmConfigKeys.OZONE_SCM_CLIENT_ADDRESS_KEY
              + " should be set in ozone-site.xml or with the --scm option");
    }

    long version = RPC.getProtocolVersion(
        StorageContainerLocationProtocolPB.class);
    InetSocketAddress scmAddress =
        getScmAddressForClients(ozoneConf);
    int containerSizeGB = (int) ozoneConf.getStorageSize(
        OZONE_SCM_CONTAINER_SIZE, OZONE_SCM_CONTAINER_SIZE_DEFAULT,
        StorageUnit.GB);
    ContainerOperationClient
        .setContainerSizeB(containerSizeGB * OzoneConsts.GB);

    RPC.setProtocolEngine(ozoneConf, StorageContainerLocationProtocolPB.class,
        ProtobufRpcEngine.class);
    StorageContainerLocationProtocol client =
        TracingUtil.createProxy(
        new StorageContainerLocationProtocolClientSideTranslatorPB(
            RPC.getProxy(StorageContainerLocationProtocolPB.class, version,
                scmAddress, UserGroupInformation.getCurrentUser(), ozoneConf,
                NetUtils.getDefaultSocketFactory(ozoneConf),
                Client.getRpcTimeout(ozoneConf))),
            StorageContainerLocationProtocol.class, ozoneConf);
    return new ContainerOperationClient(
        client, new XceiverClientManager(ozoneConf));
  }

  public void checkContainerExists(ScmClient scmClient, long containerId)
      throws IOException {
    ContainerInfo container = scmClient.getContainer(containerId);
    if (container == null) {
      throw new IllegalArgumentException("No such container " + containerId);
    }
  }

}