76 lines
3.1 KiB
Java
76 lines
3.1 KiB
Java
/*----------------------------------------------------------------------------
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* Copyright IBM Corp. 2015, 2015 All Rights Reserved
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* Limitations under the License.
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* ---------------------------------------------------------------------------
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*/
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package com.ibm.storlet.testmetadatastorlet;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.Iterator;
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import java.util.Map;
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import java.io.InputStream;
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import java.io.OutputStream;
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import com.ibm.storlet.common.IStorlet;
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import com.ibm.storlet.common.StorletException;
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import com.ibm.storlet.common.StorletInputStream;
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import com.ibm.storlet.common.StorletLogger;
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import com.ibm.storlet.common.StorletObjectOutputStream;
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import com.ibm.storlet.common.StorletOutputStream;
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public class TestMetadataStorlet implements IStorlet
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{
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@Override
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public void invoke( ArrayList<StorletInputStream> inputStreams,
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ArrayList<StorletOutputStream> outputStreams,
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Map<String, String> parameters,
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StorletLogger log )
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throws StorletException {
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log.emitLog("Test Metadata Storlet Invoked");
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final InputStream inputStream = inputStreams.get(0).getStream();
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final HashMap<String, String> metadata = inputStreams.get(0).getMetadata();
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final StorletObjectOutputStream storletObjectOutputStream = (StorletObjectOutputStream) outputStreams.get(0);
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Iterator it = metadata.entrySet().iterator();
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log.emitLog("Printing the input metadata");
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while (it.hasNext()) {
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Map.Entry pairs = (Map.Entry)it.next();
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log.emitLog((String)pairs.getKey() + " : "+ (String)pairs.getValue());
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}
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metadata.put("override_key", "new_value");
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it = metadata.entrySet().iterator();
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log.emitLog("Printing the input metadata");
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while (it.hasNext()) {
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Map.Entry pairs = (Map.Entry)it.next();
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log.emitLog((String)pairs.getKey() + " : "+ (String)pairs.getValue());
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}
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storletObjectOutputStream.setMetadata(metadata);
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OutputStream outputStream = storletObjectOutputStream.getStream();
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try {
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byte[] bytearray = new byte[100];
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inputStream.read(bytearray ,0,100);
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outputStream.write("1234567890".getBytes());
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inputStream.close();
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outputStream.close();
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} catch (IOException ex) {
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log.emitLog(ex.getMessage());
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throw new StorletException(ex.getMessage());
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}
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}
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}
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