Java StringUtils.popOption方法代碼示例

import org.apache.hadoop.util.StringUtils; //導入方法依賴的package包/類
@Override
protected void processOptions(LinkedList<String> args) throws IOException {
  name = StringUtils.popOptionWithArgument("-n", args);
  String en = StringUtils.popOptionWithArgument("-e", args);
  if (en != null) {
    try {
      encoding = enValueOfFunc.apply(StringUtils.toUpperCase(en));
    } catch (IllegalArgumentException e) {
      throw new IllegalArgumentException(
          "Invalid/unsupported encoding option specified: " + en);
    }
    Preconditions.checkArgument(encoding != null,
        "Invalid/unsupported encoding option specified: " + en);
  }

  boolean r = StringUtils.popOption("-R", args);
  setRecursive(r);
  dump = StringUtils.popOption("-d", args);

  if (!dump && name == null) {
    throw new HadoopIllegalArgumentException(
        "Must specify '-n name' or '-d' option.");
  }

  if (args.isEmpty()) {
    throw new HadoopIllegalArgumentException("<path> is missing.");
  }
  if (args.size() > 1) {
    throw new HadoopIllegalArgumentException("Too many arguments.");
  }
}
 

import org.apache.hadoop.util.StringUtils; //導入方法依賴的package包/類
public int triggerBlockReport(String[] argv) throws IOException {
  List<String> args = new LinkedList<String>();
  for (int j = 1; j < argv.length; j++) {
    args.add(argv[j]);
  }
  boolean incremental = StringUtils.popOption("-incremental", args);
  String hostPort = StringUtils.popFirstNonOption(args);
  if (hostPort == null) {
    System.err.println("You must specify a host:port pair.");
    return 1;
  }
  if (!args.isEmpty()) {
    System.err.print("Can't understand arguments: " +
      Joiner.on(" ").join(args) + "\n");
    return 1;
  }
  ClientDatanodeProtocol dnProxy = getDataNodeProxy(hostPort);
  try {
    dnProxy.triggerBlockReport(
        new BlockReportOptions.Factory().
            setIncremental(incremental).
            build());
  } catch (IOException e) {
    System.err.println("triggerBlockReport error: " + e);
    return 1;
  }
  System.out.println("Triggering " +
      (incremental ? "an incremental " : "a full ") +
      "block report on " + hostPort + ".");
  return 0;
}
 

import org.apache.hadoop.util.StringUtils; //導入方法依賴的package包/類
@Override
public int run(String argv[]) throws Exception {
  LinkedList<String> args = new LinkedList<String>();
  for (String arg : argv) {
    args.add(arg);
  }
  if (StringUtils.popOption("-h", args) ||
      StringUtils.popOption("-help", args)) {
    usage();
    return 0;
  } else if (args.size() == 0) {
    usage();
    return 0;
  }
  String hostPort = StringUtils.popOptionWithArgument("-host", args);
  if (hostPort == null) {
    System.err.println("You must specify a host with -host.");
    return 1;
  }
  if (args.size() < 0) {
    System.err.println("You must specify an operation.");
    return 1;
  }
  RPC.setProtocolEngine(getConf(), TraceAdminProtocolPB.class,
      ProtobufRpcEngine.class);
  InetSocketAddress address = NetUtils.createSocketAddr(hostPort);
  UserGroupInformation ugi = UserGroupInformation.getCurrentUser();
  Class<?> xface = TraceAdminProtocolPB.class;
  proxy = (TraceAdminProtocolPB)RPC.getProxy(xface,
      RPC.getProtocolVersion(xface), address,
      ugi, getConf(), NetUtils.getDefaultSocketFactory(getConf()), 0);
  remote = new TraceAdminProtocolTranslatorPB(proxy);
  try {
    if (args.get(0).equals("-list")) {
      return listSpanReceivers(args.subList(1, args.size()));
    } else if (args.get(0).equals("-add")) {
      return addSpanReceiver(args.subList(1, args.size()));
    } else if (args.get(0).equals("-remove")) {
      return removeSpanReceiver(args.subList(1, args.size()));
    } else {
      System.err.println("Unrecognized tracing command: " + args.get(0));
      System.err.println("Use -help for help.");
      return 1;
    }
  } finally {
    remote.close();
  }
}
 

import org.apache.hadoop.util.StringUtils; //導入方法依賴的package包/類
@Override
public int run(Configuration conf, List<String> args) throws IOException {
  CacheDirectiveInfo.Builder builder =
      new CacheDirectiveInfo.Builder();
  String pathFilter = StringUtils.popOptionWithArgument("-path", args);
  if (pathFilter != null) {
    builder.setPath(new Path(pathFilter));
  }
  String poolFilter = StringUtils.popOptionWithArgument("-pool", args);
  if (poolFilter != null) {
    builder.setPool(poolFilter);
  }
  boolean printStats = StringUtils.popOption("-stats", args);
  String idFilter = StringUtils.popOptionWithArgument("-id", args);
  if (idFilter != null) {
    builder.setId(Long.parseLong(idFilter));
  }
  if (!args.isEmpty()) {
    System.err.println("Can't understand argument: " + args.get(0));
    return 1;
  }
  TableListing.Builder tableBuilder = new TableListing.Builder().
      addField("ID", Justification.RIGHT).
      addField("POOL", Justification.LEFT).
      addField("REPL", Justification.RIGHT).
      addField("EXPIRY", Justification.LEFT).
      addField("PATH", Justification.LEFT);
  if (printStats) {
    tableBuilder.addField("BYTES_NEEDED", Justification.RIGHT).
                addField("BYTES_CACHED", Justification.RIGHT).
                addField("FILES_NEEDED", Justification.RIGHT).
                addField("FILES_CACHED", Justification.RIGHT);
  }
  TableListing tableListing = tableBuilder.build();
  try {
    DistributedFileSystem dfs = AdminHelper.getDFS(conf);
    RemoteIterator<CacheDirectiveEntry> iter =
        dfs.listCacheDirectives(builder.build());
    int numEntries = 0;
    while (iter.hasNext()) {
      CacheDirectiveEntry entry = iter.next();
      CacheDirectiveInfo directive = entry.getInfo();
      CacheDirectiveStats stats = entry.getStats();
      List<String> row = new LinkedList<String>();
      row.add("" + directive.getId());
      row.add(directive.getPool());
      row.add("" + directive.getReplication());
      String expiry;
      // This is effectively never, round for nice printing
      if (directive.getExpiration().getMillis() >
          Expiration.MAX_RELATIVE_EXPIRY_MS / 2) {
        expiry = "never";
      } else {
        expiry = directive.getExpiration().toString();
      }
      row.add(expiry);
      row.add(directive.getPath().toUri().getPath());
      if (printStats) {
        row.add("" + stats.getBytesNeeded());
        row.add("" + stats.getBytesCached());
        row.add("" + stats.getFilesNeeded());
        row.add("" + stats.getFilesCached());
      }
      tableListing.addRow(row.toArray(new String[row.size()]));
      numEntries++;
    }
    System.out.print(String.format("Found %d entr%s%n",
        numEntries, numEntries == 1 ? "y" : "ies"));
    if (numEntries > 0) {
      System.out.print(tableListing);
    }
  } catch (IOException e) {
    System.err.println(AdminHelper.prettifyException(e));
    return 2;
  }
  return 0;
}