gateway-shell-samples/src/main/resources/samples/SampleComplexCommand.groovy

/*
 * 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.
 */
import com.jayway.jsonpath.JsonPath
import org.apache.hadoop.gateway.shell.AbstractRequest
import org.apache.hadoop.gateway.shell.BasicResponse
import org.apache.hadoop.gateway.shell.Hadoop
import org.apache.http.HttpResponse
import org.apache.http.client.methods.HttpGet
import org.apache.http.client.utils.URIBuilder

import java.util.concurrent.Callable

class SampleComplexCommand {

  static class Request extends AbstractRequest<Response> {

    Request( Hadoop hadoop ) {
      super( hadoop )
    }

    private String param;
    Request param( String param ) {
      this.param = param;
      return this;
    }

    @Override
    protected Callable<Response> callable() {
      return new Callable<Response>() {
        @Override
        Response call() {
          URIBuilder uri = uri( SampleService.PATH, param )
          addQueryParam( uri, "op", "LISTSTATUS" )
          HttpGet get = new HttpGet( uri.build() )
          return new Response( execute( get ) )
        }
      }
    }

  }

  static class Response extends BasicResponse {

    Response(HttpResponse response) {
      super(response)
    }

    public List<String> getNames() {
      return JsonPath.read( string, "\$.FileStatuses.FileStatus[*].pathSuffix" )
    }

  }

}