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package mobvista.dmp.common;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.net.util.Base64;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.conf.Configured;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.NullWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.Mapper;
import org.apache.hadoop.mapreduce.Reducer;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;
import java.io.*;
import java.net.URI;
import java.util.HashMap;
import java.util.Map;
/**
* author: houying
* date : 16-11-8
* desc :
*/
public abstract class CommonMapReduce extends Configured implements Tool {
private final String name;
private final Class<? extends Mapper> mapperClass;
private final Class<? extends Reducer> reducerClass;
public final static String didPtn = "^[0-9a-fA-F]{8}(-[0-9a-fA-F]{4}){3}-[0-9a-fA-F]{12}$";
public final static String imeiPtn = "^([0-9]{15,17})$";
public final static String imeiMd5Ptn = "^([a-fA-F0-9]{32})$";
public final static String imeiMd5 = "imeimd5";
public final static String oaidMd5 = "oaidmd5";
public final static String andriodIdPtn = "^[a-zA-Z0-9]{16}$";
public final static String allZero = "00000000-0000-0000-0000-000000000000";
// 14~16位连续多位相同字符，非法IMEI过滤
public final static String imeiPtnAll = "^([0-9])\1{14,16}";
// 连续多位相同字符，非法 androidId 过滤
public final static String andriodIdAll = "^[a-zA-Z0-9]\1{15}$";
// 连续多位相同字符，非法 IMEI MD5 过滤
public final static String umd5Ptn = "^([0-9A-Za-z])\1{29,31}";
// OAID
public final static String oaidPtb = "^[0-9A-Za-z-]{16,64}$";
public final static String md5Ptn = "^([a-fA-F0-9]{32})$";
public CommonMapReduce(String name, Class<? extends Mapper> mapperClass, Class<? extends Reducer> reducerClass) {
this.name = name;
this.mapperClass = mapperClass;
this.reducerClass = reducerClass;
}
public static void setMetrics(Mapper.Context context, String metricsGroup, String metricsName, long increaseNum) {
context.getCounter(metricsGroup, metricsName).increment(increaseNum);
}
public static void setMetrics(Reducer.Context context, String metricsGroup, String metricsName, long increaseNum) {
context.getCounter(metricsGroup, metricsName).increment(increaseNum);
}
@Override
public int run(String[] args) throws Exception {
Configuration conf = getConf();
/* conf.set("mapreduce.map.speculative", "true");
conf.set("mapreduce.reduce.speculative", "true");
conf.set("mapreduce.task.io.sort.mb", "500");
conf.set("mapreduce.reduce.java.opts", "-Xmx1536m");
conf.set("mapreduce.reduce.memory.mb", "2048");
conf.set("mapreduce.reduce.shuffle.parallelcopies", "50");*/
Job job = Job.getInstance(conf, name);
job.setJarByClass(CommonMapReduce.class);
setInputPath(job, args);
setOutputPath(job, args);
Path outputPath = FileOutputFormat.getOutputPath(job);
FileSystem fileSystem = outputPath.getFileSystem(job.getConfiguration());
if (fileSystem.exists(outputPath)) {
fileSystem.delete(outputPath, true);
}
job.setMapperClass(mapperClass);
job.setMapOutputKeyClass(Text.class);
job.setMapOutputValueClass(Text.class);
if (reducerClass != null) {
job.setReducerClass(reducerClass);
job.setOutputKeyClass(Text.class);
job.setOutputValueClass(NullWritable.class);
} else {
job.setOutputKeyClass(job.getMapOutputKeyClass());
job.setOutputValueClass(job.getMapOutputValueClass());
}
otherSetting(job, args);
setConf(job, args);
return job.waitForCompletion(true) ? 0 : 1;
}
protected void otherSetting(Job job, String[] args) throws Exception {
}
protected void setOutputPath(Job job, String[] args) throws IOException {
}
protected void setInputPath(Job job, String[] args) throws IOException {
}
protected void setConf(Job job, String[] args) throws IOException {
}
public static void start(Tool tool, String[] args) throws Exception {
System.exit(ToolRunner.run(new Configuration(), tool, args));
}
/**
* 从指定文件中读取需要广播的内容放入到Map中
*
* @param filePath 文件路径
* @param conf hadoop配置
* @param keyIndex 作为map key的数据下标索引
* @param valueIndex 作为map value的数据下标索引
* @return
* @throws Exception
*/
public static Map<String, String> buildBroadcast(String filePath, Configuration conf, int keyIndex, int valueIndex) throws Exception {
Map<String, String> map = new HashMap<String, String>();
FileSystem fs = FileSystem.get(URI.create(filePath), conf);
BufferedReader reader = null;
try {
InputStream in = fs.open(new Path(filePath));
reader = new BufferedReader(new InputStreamReader(in));
String line = reader.readLine();
while (line != null) {
String[] splits = line.split("\t", -1);
map.put(splits[keyIndex], splits[valueIndex]);
line = reader.readLine();
}
} finally {
}
return map;
}
/**
* 将对象序列化成字符串
*
* @param obj
* @return
* @throws Exception
*/
public static String encodeObject(Object obj) throws Exception {
ObjectOutputStream oos = null;
try {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
oos = new ObjectOutputStream(baos);
oos.writeObject(obj);
byte[] bytes = baos.toByteArray();
return new String(Base64.encodeBase64(bytes));
} finally {
if (oos != null) {
oos.flush();
oos.close();
}
}
}
/**
* 将字符串反序列化成对象
*
* @param str
* @param clazz
* @param <T>
* @return
* @throws Exception
*/
public static <T extends Serializable> T decodeObject(String str, Class<T> clazz) throws Exception {
ObjectInputStream ois = null;
try {
byte[] input = Base64.decodeBase64(str);
ByteArrayInputStream bais = new ByteArrayInputStream(input);
ois = new ObjectInputStream(bais);
return (T) ois.readObject();
} finally {
if (ois != null) {
ois.close();
}
}
}
public static boolean checkDeviceId(String deviceId) {
boolean flag = StringUtils.isNotBlank(deviceId) &&
((deviceId.matches(didPtn) && !allZero.equals(deviceId)) ||
(deviceId.matches(imeiPtn) && !deviceId.matches(imeiPtnAll)) ||
(deviceId.matches(andriodIdPtn) && !deviceId.matches(andriodIdAll)) ||
(deviceId.matches(md5Ptn) && !deviceId.matches(umd5Ptn)) ||
deviceId.matches(oaidPtb) || deviceId.length() > 16);
return flag;
}
}