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/*-
* ============LICENSE_START==========================================
* OPENECOMP - DCAE
* ===================================================================
* Copyright (c) 2017 AT&T Intellectual Property. All rights reserved.
* ===================================================================
* 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.
* ============LICENSE_END============================================
*/
/*
Copyright (c) 2015-16 AT&T Intellectual Property. All rights reserved.
THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T
The copyright notice above does not evidence any
actual or intended publication of such source code.
*/
package org.openecomp.dcae.controller.service.dmaap.drsub.servers.manager;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.StringWriter;
import java.io.Writer;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;
import java.util.ArrayList;
import java.util.List;
import org.apache.log4j.Logger;
import org.json.JSONObject;
import org.openecomp.ncomp.sirius.manager.ISiriusServer;
import org.openecomp.ncomp.utils.SecurityUtils;
import org.openecomp.dcae.controller.service.servers.vmmanager.DcaeVirtualMachineManagerProvider;
import org.openecomp.dcae.controller.service.dmaap.drsub.manager.ControllerServiceDmaapDrsubManager;
/**
* Service Manager for DMaaP Data Router Subscriber.
*
*/
public class DcaeControllerServiceDmaapDrsubManagerProvider extends DcaeVirtualMachineManagerProvider {
public static final Logger logger = Logger.getLogger(DcaeControllerServiceDmaapDrsubManagerProvider.class);
ControllerServiceDmaapDrsubManager o;
private static final String APP_HOME_ENV = System.getenv("APP_DRSUB_HOME");
private static final String APP_HOME = "/opt/app/dcae-analytics-dmaap-drsub";
private static final String CTL_SCRIPT = "dmaapAfSub.sh"; // Subscriber control script
private static final String HDFS_SCRIPT = "create_hdfs_dirs.sh"; // HDFS directories creation script
private static final int JSON_INDENT_FACTOR = 0;
public DcaeControllerServiceDmaapDrsubManagerProvider(ISiriusServer controller, ControllerServiceDmaapDrsubManager o) {
super(controller, o);
this.o = o;
}
@Override
public void configurationChanged() {
// important to call the super methods for handling DMaaP setup.
setDmaapConfigurationFile(o.getDmaapConfFile());
super.configurationChanged();
// we expect all configuration to be available at once
// there is no support for individual parameter changes
JSONObject json = new JSONObject();
json.put("hdfs.uri", o.getHdfsUri());
json.put("hdfs.uri_descr", o.getHdfsUriDescr());
json.put("hdfs.persist.loc", o.getHdfsPersistLoc());
json.put("hdfs.persist.loc_descr", o.getHdfsPersistLocDescr());
json.put("dmaap.conf.file", o.getDmaapConfFile());
json.put("dmaap.conf.file_descr", o.getDmaapConfFileDescr());
json.put("dmaap.streamid", o.getDmaapStreamid());
json.put("dmaap.streamid_descr", o.getDmaapStreamidDescr());
String jsonStr = json.toString(JSON_INDENT_FACTOR);
logger.info("JSON: " + jsonStr);
String confFile = APP_HOME_ENV == null || APP_HOME_ENV == "" ?
APP_HOME + "/conf/conf.json" :
APP_HOME_ENV + "/conf/conf.json";
confFile = SecurityUtils.safeFileName(confFile);
logger.info("confFile: " + p(confFile));
// save backup copy of configuration file
try {
Path confFilePath = Paths.get(confFile);
if (Files.exists(confFilePath)) {
Files.move(confFilePath, Paths.get(confFile + ".bak"), StandardCopyOption.REPLACE_EXISTING);
}
} catch (IOException e) {
logger.warn("Couldn't rename " + confFile + " to " + confFile + ".bak");
e.printStackTrace();
}
// write new configuration
Writer w = null;
try {
w = new BufferedWriter(new FileWriter(confFile));
w.write(jsonStr);
} catch (IOException e) {
logger.error("Error writing " + confFile);
e.printStackTrace();
} finally {
if (w != null) {
try {
w.close();
} catch (IOException ee) {
ee.printStackTrace();
}
}
}
// call script to create HDFS directories based on updated configuration
createHdfsDirs();
// restart controlled process for config changes to take effect
resume();
}
private String p(Object v) {
return SecurityUtils.logForcingProtection(v);
}
@Override
public void suspend() {
super.suspend();
List<String> command = new ArrayList<String>();
logger.info("stopping");
command.add(CTL_SCRIPT);
command.add("stop");
runScript(command);
}
@Override
public void resume() {
super.resume();
List<String> command = new ArrayList<String>();
logger.info("(re)starting");
command.add(CTL_SCRIPT);
command.add("restart");
runScript(command);
}
private void createHdfsDirs() {
List<String> command = new ArrayList<String>();
logger.info("creating HDFS directories");
command.add(HDFS_SCRIPT);
runScript(command);
}
private void runScript(List<String> command) {
String appBin = SecurityUtils.safeFileName(APP_HOME_ENV);
if (appBin == null || appBin.equals("")) {
appBin=APP_HOME;
}
appBin += "/bin";
if (command.size() == 2) {
File cmdFile = new File(appBin+"/"+command.get(0));
if (cmdFile.exists()) {
try {
ProcessBuilder builder = new ProcessBuilder(appBin+"/"+command.get(0),command.get(1));
logger.info("command: ["+p(appBin)+"/"+command.get(0)+" "+command.get(1)+"]");
System.out.println("command: ["+p(appBin)+"/"+command.get(0)+" "+command.get(1)+"]");
Process process = builder.start();
InputStream inStream = process.getInputStream();
process.waitFor();
System.out.println(convertStreamToStr(inStream));
} catch (InterruptedException|IOException e) {
e.printStackTrace();
}
} else {
logger.error("\""+p(appBin)+"/"+command.get(0)+"\" does not exist.");
}
}
}
public static String convertStreamToStr(InputStream is) throws IOException {
if (is != null) {
Writer writer = new StringWriter();
char[] buffer = new char[1024];
try {
Reader reader = new BufferedReader(new InputStreamReader(is,"UTF-8"));
int n;
while ((n = reader.read(buffer)) != -1) {
writer.write(buffer, 0, n);
}
} finally {
is.close();
}
return writer.toString();
} else {
return "";
}
}
}
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