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
   *
   *      https://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.ivy.plugins.repository.ssh;
  
  import java.io.IOException;
  import java.io.InputStream;
  
  import org.apache.ivy.plugins.repository.Resource;
  import org.apache.ivy.util.Message;
  
  /**
   * Resource for SSH Ivy Repository
   */
  public class SshResource implements Resource {
  
      private boolean resolved = false;
  
      private String uri = null;
  
      private boolean bExists = false;
  
      private long len = 0;
  
      private long lastModified = 0;
  
      private SshRepository repository = null;
  
      public SshResource() {
          resolved = true;
      }
  
      public SshResource(SshRepository repository, String uri) {
          this.uri = uri;
          this.repository = repository;
          resolved = false;
      }
  
      public SshResource(SshRepository repository, String uri, boolean bExists, long len,
              long lastModified) {
          this.uri = uri;
          this.bExists = bExists;
          this.len = len;
          this.lastModified = lastModified;
          this.repository = repository;
          resolved = true;
      }
  
      /*
       * (non-Javadoc)
       *
       * @see org.apache.ivy.repository.Resource#exists()
       */
      public boolean exists() {
          if (!resolved) {
              resolve();
          }
          return bExists;
      }
  
      /*
       * (non-Javadoc)
       *
       * @see org.apache.ivy.repository.Resource#getContentLength()
       */
      public long getContentLength() {
          if (!resolved) {
              resolve();
          }
          return len;
      }
  
      /*
       * (non-Javadoc)
       *
       * @see org.apache.ivy.repository.Resource#getLastModified()
       */
      public long getLastModified() {
          if (!resolved) {
              resolve();
          }
          return lastModified;
      }
  
      private void resolve() {
          Message.debug("SShResource: resolving " + uri);
          SshResource res = repository.resolveResource(uri);
          len = res.getContentLength();
          lastModified = res.getLastModified();
          bExists = res.exists();
          resolved = true;
          Message.debug("SShResource: resolved " + this);
      }
  
      /*
       * (non-Javadoc)
       *
       * @see org.apache.ivy.repository.Resource#getName()
       */
      public String getName() {
          return uri;
      }
  
      public String toString() {
          return "SshResource:" + uri + " (" + len + ")]";
      }
  
      public boolean isLocal() {
          return false;
      }
  
      public Resource clone(String cloneName) {
          return new SshResource(repository, cloneName);
      }
  
      public InputStream openStream() throws IOException {
          return repository.openStream(this);
      }
  }
  