content: /*
   * 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
   *
   *     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.apache.beam.sdk.fn.channel;
  
  import static org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.base.Preconditions.checkArgument;
  
  import java.io.File;
  import java.io.IOException;
  import java.net.InetSocketAddress;
  import java.net.SocketAddress;
  import org.apache.beam.vendor.grpc.v1p69p0.io.netty.channel.unix.DomainSocketAddress;
  import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.net.HostAndPort;
  
  /** Creates a {@link SocketAddress} based upon a supplied string. */
  public class SocketAddressFactory {
    private static final String UNIX_DOMAIN_SOCKET_PREFIX = "unix://";
  
    /** Parse a {@link SocketAddress} from the given string. */
    public static SocketAddress createFrom(String value) {
      if (value.startsWith(UNIX_DOMAIN_SOCKET_PREFIX)) {
        // Unix Domain Socket address.
        // Create the underlying file for the Unix Domain Socket.
        String filePath = value.substring(UNIX_DOMAIN_SOCKET_PREFIX.length());
        File file = new File(filePath);
        if (!file.isAbsolute()) {
          throw new IllegalArgumentException("File path must be absolute: " + filePath);
        }
        try {
          if (file.createNewFile()) {
            // If this application created the file, delete it when the application exits.
            file.deleteOnExit();
          }
        } catch (IOException ex) {
          throw new RuntimeException(ex);
        }
        // Create the SocketAddress referencing the file.
        return new DomainSocketAddress(file);
      } else {
        // Standard TCP/IP address.
        HostAndPort hostAndPort = HostAndPort.fromString(value);
        checkArgument(
            hostAndPort.hasPort(),
            "Address must be a unix:// path or be in the form host:port. Got: %s",
            value);
        return new InetSocketAddress(hostAndPort.getHost(), hostAndPort.getPort());
      }
    }
  }
  