/*
* Copyright 2012 Nodeable Inc
*
* Licensed 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 com.streamreduce.client.outbound;
import com.streamreduce.OutboundStorageException;
import com.streamreduce.core.model.OutboundConfiguration;
import com.streamreduce.core.model.messages.SobaMessage;
import com.streamreduce.rest.dto.response.SobaMessageResponseDTO;
import com.streamreduce.util.WebHDFSClient;
import net.sf.json.JSONObject;
import org.apache.commons.collections.MapUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
public class WebHDFSOutboundClient extends AbstractOutboundClient {
private static final Logger LOGGER = LoggerFactory.getLogger(WebHDFSOutboundClient.class);
WebHDFSOutboundClient(OutboundConfiguration outboundConfiguration) {
super(outboundConfiguration);
}
@Override
public void putRawMessage(JSONObject payload) throws OutboundStorageException {
if (MapUtils.isEmpty(payload)) {
throw new IllegalArgumentException("Payload must be non-empty.");
}
try {
byte[] payloadAsBytes = payload.toString().getBytes();
String filepath = String.format("%s%s-%s", RAW_PAYLOAD_PREFIX, System.currentTimeMillis(), payload.hashCode());
sendPayloadToWebHDFS(filepath,payloadAsBytes);
}
catch (Exception e) {
throw new OutboundStorageException(e.getMessage(), e);
}
}
@Override
public void putProcessedMessage(SobaMessage sobaMessage) throws OutboundStorageException {
if (sobaMessage == null) {
throw new IllegalArgumentException("sobaMessage must be non-null");
}
try {
byte[] payload = convertSobaMessageToDTOAsBytes(sobaMessage);
String filepath = createProcessedMessagePath(sobaMessage);
sendPayloadToWebHDFS(filepath, payload);
} catch (Exception e) {
throw new OutboundStorageException(e.getMessage(), e);
}
}
@Override
public void putProcessedMessage(SobaMessageResponseDTO sobaMessage) throws OutboundStorageException {
if (sobaMessage == null) {
throw new IllegalArgumentException("sobaMessage must be non-null");
}
try {
byte[] payload = convertSobaMessageToDTOAsBytes(sobaMessage);
String filepath = createProcessedMessagePath(sobaMessage);
sendPayloadToWebHDFS(filepath,payload);
} catch (Exception e) {
throw new OutboundStorageException(e.getMessage(), e);
}
}
@Override
public void putInsightMessage(SobaMessage sobaMessage) throws OutboundStorageException {
if (sobaMessage == null) {
throw new IllegalArgumentException("sobaMessage must be non-null");
}
try {
byte[] payload = convertSobaMessageToDTOAsBytes(sobaMessage);
String filepath = createInsightMessagePath(sobaMessage);
sendPayloadToWebHDFS(filepath,payload);
} catch (Exception e) {
throw new OutboundStorageException(e.getMessage(), e);
}
}
@Override
public void putInsightMessage(SobaMessageResponseDTO sobaMessage) throws OutboundStorageException {
if (sobaMessage == null) {
throw new IllegalArgumentException("sobaMessage must be non-null");
}
try {
byte[] payload = convertSobaMessageToDTOAsBytes(sobaMessage);
String filepath = createInsightMessagePath(sobaMessage);
sendPayloadToWebHDFS(filepath,payload);
} catch (Exception e) {
throw new OutboundStorageException(e.getMessage(), e);
}
}
private void createDestinationDirectory(WebHDFSClient webHDFSClient, String directory) throws IOException {
if (!webHDFSClient.exists(directory)) {
if (!webHDFSClient.mkdirs(directory)) {
throw new IOException(String.format("Unable to create destination directory %s", directory));
}
}
}
private void sendPayloadToWebHDFS(String filepath, byte[] payload) throws IOException {
WebHDFSClient webHDFSClient = new WebHDFSClient(outboundConfiguration);
createDestinationDirectory(webHDFSClient, filepath.substring(0,filepath.lastIndexOf("/")));
webHDFSClient.createFile(filepath, payload);
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("Message sent to WebHDFS destination at path: " + filepath);
}
}
}