利用flink從kafka接收訊息，統計結果寫入mysql，訊息寫入hive
利用flink從帶有kerberos認證kafka中接收訊息，每分鐘統計各項指標，如每分鐘接收的記錄數，金額。在統計的時候要累計前一分鐘的累計量。統計值 寫入mysql，用來前端展示，同時要把訊息存入hadoop平臺，要在hive建立表
現將把主要邏輯展示如下
1、從指定的kafka的topic接收資料
2、統計資料寫入mysql
3、接收的資料寫入hdfs，在hive中建外部表的方式，這樣速度會更快
4、程式外面還要加個定時任務，給外部表加分割槽
/**
* 1、從指定的kafka的topic接收資料
* 2、統計資料寫入mysql
* 3、接收的資料寫入hdfs，在hive中建外部表的方式，這樣速度會更快
* 加入兩個sink，一個是寫mysql，一個寫hdfs
* 程式外面還要加個定時任務，給表加分割槽，指令碼在resources/load_parition.sh
* @param tableName 寫入的hive表名
*/
public void writePayByKey(String tableName) {
try {
//取時間間隔，每隔多少分鐘
Integer intevalTime = commonProperties.getInterValTime();
//初始化計算環境，設定checkpoint等資訊
StreamExecutionEnvironment bsEnv = createEnv(checkpointUrl);
StreamTableEnvironment bsTableEnv = StreamTableEnvironment.create(bsEnv);
//因為kafka加入了kerberos認證,krb5檔案和kafka.jaas（此檔案的格式請看我的博文）
Properties properties = getProperties();
//如果配置檔案中啟用了kerberos認證
if (commonProperties.getKafkaKerberosFlag()) {
//從配置檔案中獲取kafka.jaas檔案的位置
String kerberosConf = commonProperties.getKafkaKerberosConfig();
//從配置檔案中獲取krb5.conf，也就是kdc伺服器上的/etc/krb5.conf檔案，可以把它放在其它位置，但是要在配置檔案指定位置
String krb5Conf=commonProperties.getKerberoseKrb5Conf();
log.info("kerberosConf:"+kerberosConf);
log.info("krb5Conf:"+krb5Conf);
System.setProperty("java.security.auth.login.config", kerberosConf);
System.setProperty("java.security.krb5.conf", krb5Conf);
properties.put("security.protocol", "SASL_PLAINTEXT");
properties.put("sasl.mechanism", "GSSAPI");
properties.put("sasl.kerberos.service.name", "kafka");
}
//把kafka中的json資料序列化成物件
FlinkKafkaConsumer<UnionPay> kafkaConsumer011 = new FlinkKafkaConsumer(topicName, new ConsumerDeserializationSchema(UnionPay.class), properties);
kafkaConsumer011.setStartFromLatest();
DataStream<UnionPay> dataStreamSource = bsEnv.addSource(kafkaConsumer011);
//放到一個視窗進行分類統計
WindowedStream<UnionPay, String, TimeWindow> timeWindowWindowedStream = dataStreamSource.keyBy(new KeySelector<UnionPay, String>() {
@Override
public String getKey(UnionPay unionPay) throws Exception {
String mrchNo=MyUtils.getMrchNo(unionPay.getMrchno());
return mrchNo;
}
}).window(TumblingProcessingTimeWindows.of(Time.minutes(intevalTime)));
SingleOutputStreamOperator<MonitorTranDetail> resultWin = timeWindowWindowedStream.aggregate(new RsesultAggregateFunc(), new ProcessWindowFunction<MonitorTranDetail, MonitorTranDetail, String, TimeWindow>() {
@Override
public void process(String s, Context context, Iterable<MonitorTranDetail> iterable, Collector<MonitorTranDetail> collector) {
try {
Long lend = context.window().getEnd();
String etltime = MyUtils.getDateFromformatter("yyyyMMddHHmmss", lend);
String datadate = MyUtils.getDateFromformatter("yyyyMMdd", lend);
//String txntime = MyUtils.getDateFromformatter("HHmmss", lend);
String txntime=etltime;
//設定統計物件的資料時間，這裡取的是每個視窗的結束時間
for (MonitorTranDetail monitorTranDetail : iterable) {
monitorTranDetail.setEtlTIme(etltime);
monitorTranDetail.setDataDate(datadate);
monitorTranDetail.setTxnTime(txntime);
collector.collect(monitorTranDetail);
}
} catch (Exception ex) {
ex.printStackTrace();
}
}
});
//添回sink把統計資料寫入
resultWin.addSink(new DbSinkFunction());
//把接收的資料寫入hdfs
List<FieldSchema> fieldSchemas = xmlParser.parseField(tableName);
fieldSchemas.add(new FieldSchema("pexchangeDate", "string", "yyyyMMdd"));
SingleOutputStreamOperator<String> singleOutputUnionPay = timeWindowWindowedStream.process(new HdfsAllWindowFunction(fieldSchemas));
//獲取資料表所在hdfs位置
String dataBasedfsdir = commonProperties.getDfsdatabaseDir();
if (!dataBasedfsdir.endsWith("/")) {
dataBasedfsdir = dataBasedfsdir + "/";
}
String hdfsDir = dataBasedfsdir + tableName.toLowerCase() + "/";
BucketingSink<String> hdfsSink = new BucketingSink<>(hdfsDir);
// 設定以yyyyMMdd的格式進行切分目錄，類似hive的日期分割槽
String strSplitformatter = getSplitChar();
hdfsSink.setBucketer(new HdfsBucketer(strSplitformatter));
// 設定檔案塊大小128M，超過128M會關閉當前檔案，開啟下一個檔案
hdfsSink.setBatchSize(1024 * 1024 * 128L);
Configuration conf = new Configuration();
String url = commonProperties.getDfsdefaultName();
conf.set("fs.default.name", url);
hdfsSink.setFSConfig(conf);
// 設定一小時翻滾一次
hdfsSink.setBatchRolloverInterval(60 * 60 * 1000L);
hdfsSink.setInactiveBucketThreshold(1000L);
//設定的是檢查兩次檢查桶不活躍的情況的週期
hdfsSink.setInactiveBucketCheckInterval(1000L);
// 設定等待寫入的檔案字首，預設是_
hdfsSink.setPendingPrefix("");
// 設定等待寫入的檔案字尾，預設是.pending
hdfsSink.setPendingSuffix("");
//設定正在處理的檔案字首，預設為_
hdfsSink.setInProgressPrefix(".");
//加入hdfssink
singleOutputUnionPay.addSink(hdfsSink);
HiveCatalog hive = new HiveCatalog(hiveCtalog, hiveDatabase, hiveConf, hiveVersion);
bsTableEnv.registerCatalog(hiveCtalog, hive);
bsTableEnv.useCatalog(hiveCtalog);
bsTableEnv.getConfig().setSqlDialect(SqlDialect.HIVE);
bsTableEnv.useDatabase(hiveDatabase);
//判斷是否有表
List<String> listObj = Arrays.asList(bsTableEnv.listTables());
List<String> listExist = listObj.stream().filter(r -> r.equalsIgnoreCase(tableName)).collect(Collectors.toList());
//如果沒有表則建立表
if (listExist.size() == 0) {
String sinkDdl = xmlParser.parseExternalTable(tableName);
log.info(sinkDdl);
bsTableEnv.executeSql(sinkDdl);
}
bsEnv.execute("Insert_統計資料寫入mysql_Hive");
} catch (Exception e) {
log.error("writePayByKey:{}", e);
}
}
一、把kafka中json訊息轉換成物件
ConsumerDeserializationSchema.java
import com.alibaba.fastjson.JSONObject;
import com.tcloudata.utils.MyUtils;
import org.apache.flink.api.common.serialization.DeserializationSchema;
import org.apache.flink.api.common.typeinfo.TypeInformation;
import org.apache.flink.api.java.typeutils.TypeExtractor;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
public class ConsumerDeserializationSchema<T> implements DeserializationSchema<T> {
private Class<T> clazz;
public ConsumerDeserializationSchema(Class<T> clazz) {
this.clazz = clazz;
}
@Override
public T deserialize(byte[] message) throws IOException {
ByteBuffer buffer = ByteBuffer.wrap(message).order(ByteOrder.LITTLE_ENDIAN);
String mess = MyUtils.byteBuffertoString(buffer);
//封裝為POJO類
T objTarget=null;
String className=clazz.getTypeName().toLowerCase();
//此物件的json格式是巢狀的
if (className.indexOf("UnionPay".toLowerCase())!=-1)
{
objTarget= (T) MyUtils.convertUnionPay(mess,clazz);
}else
{
objTarget= JSONObject.parseObject(mess, clazz);
}
return objTarget;
}
@Override
public boolean isEndOfStream(T t) {
return false;
}
@Override
public TypeInformation<T> getProducedType() {
return TypeExtractor.getForClass(clazz);
}
}
二、每條訊息進行統計
RsesultAggregateFunc.java
import com.tcloudata.model.MonitorTranDetail;
import com.tcloudata.model.UnionPay;
import com.tcloudata.utils.MyUtils;
import org.apache.flink.api.common.functions.AggregateFunction;
import java.math.BigDecimal;
public class RsesultAggregateFunc implements AggregateFunction<UnionPay, MonitorTranDetail, MonitorTranDetail> {
@Override
public MonitorTranDetail createAccumulator() {
MonitorTranDetail resultInfo = new MonitorTranDetail();
return resultInfo;
}
@Override
public MonitorTranDetail add(UnionPay unionPay, MonitorTranDetail monitorTranDetail) {
String mrchNo = MyUtils.getMrchNo(unionPay.getMrchno());
Double amount = unionPay.getAmount();
Integer txnCnt1 = 0;
Integer txnCnt2 = 0;
Integer txnCnt3 = 0;
Integer txnCnt4 = 0;
Integer txnCnt5 = 0;
Integer txnCnt6 = 0;
//當日消費總筆數
Integer tottxnCnt = 1;
//消費金額10000以上筆數
if (amount >= 10000) {
txnCnt1 = 1;
}
//消費金額3000-10000筆數
if (amount >= 3000 && amount < 10000) {
txnCnt2 = 1;
}
//消費金額1000-3000筆數
if (amount >= 1000 && amount < 3000) {
txnCnt3 = 1;
}
// 消費金額500-1000筆數
if (amount >= 500 && amount < 1000) {
txnCnt4 = 1;
}
// 消費金額100-500筆數
if (amount >= 100 && amount < 500) {
txnCnt5 = 1;
}
// 消費金額100以內筆數
if (amount > 0 && amount < 100) {
txnCnt6 = 1;
}
//當日消費總金額
BigDecimal tmpBigdecimal = new BigDecimal(amount);
if (mrchNo.equals(monitorTranDetail.getZoneCd())) {
txnCnt1 = monitorTranDetail.getTxnCnt1() + txnCnt1;
txnCnt2 = monitorTranDetail.getTxnCnt2() + txnCnt2;
txnCnt3 = monitorTranDetail.getTxnCnt3() + txnCnt3;
txnCnt4 = monitorTranDetail.getTxnCnt4() + txnCnt4;
txnCnt5 = monitorTranDetail.getTxnCnt5() + txnCnt5;
txnCnt6 = monitorTranDetail.getTxnCnt6() + txnCnt6;
tottxnCnt = monitorTranDetail.getTottxnCntd() + 1;
BigDecimal d1 = new BigDecimal(amount);
BigDecimal d2 = new BigDecimal(monitorTranDetail.getTottxnAmountd());
tmpBigdecimal = d1.add(d2);
} else {
monitorTranDetail.setZoneCd(mrchNo);
}
monitorTranDetail.setTxnCnt1(txnCnt1);
monitorTranDetail.setTxnCnt2(txnCnt2);
monitorTranDetail.setTxnCnt2(txnCnt2);
monitorTranDetail.setTxnCnt3(txnCnt3);
monitorTranDetail.setTxnCnt4(txnCnt4);
monitorTranDetail.setTxnCnt5(txnCnt5);
monitorTranDetail.setTxnCnt6(txnCnt6);
monitorTranDetail.setTottxnCntd(tottxnCnt);
monitorTranDetail.setTottxnAmountd(tmpBigdecimal.doubleValue());
return monitorTranDetail;
}
@Override
public MonitorTranDetail getResult(MonitorTranDetail monitorTranDetail) {
return monitorTranDetail;
}
@Override
public MonitorTranDetail merge(MonitorTranDetail acc1, MonitorTranDetail acc2) {
acc2.setTxnCnt1(acc1.getTxnCnt1() + acc2.getTxnCnt1());
acc2.setTxnCnt2(acc1.getTxnCnt2() + acc2.getTxnCnt2());
acc2.setTxnCnt3(acc1.getTxnCnt3() + acc2.getTxnCnt3());
acc2.setTxnCnt4(acc1.getTxnCnt4() + acc2.getTxnCnt4());
acc2.setTxnCnt5(acc1.getTxnCnt5() + acc2.getTxnCnt5());
acc2.setTxnCnt6(acc1.getTxnCnt6() + acc2.getTxnCnt6());
acc2.setTottxnCntd(acc1.getTottxnCntd() + acc2.getTottxnCntd());
BigDecimal d1 = new BigDecimal(acc1.getTottxnAmountd());
BigDecimal d2 = new BigDecimal(acc2.getTottxnAmountd());
BigDecimal tmpBigdecimal = d1.add(d2);
acc2.setTottxnAmountd(tmpBigdecimal.doubleValue());
return acc2;
}
}
三、pom檔案
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.tcloudata</groupId>
<artifactId>flinkhr</artifactId>
<version>1.0</version>
<name>flinkhr</name>
<!-- FIXME change it to the project's website -->
<properties>
<flink.version>1.11.2</flink.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<scala.binary.version>2.11</scala.binary.version>
<hive-jdbc.version>1.2.1</hive-jdbc.version>
<hadoop-common.version>2.6.5</hadoop-common.version>
<kafka.version>2.4.1</kafka.version>
</properties>
<dependencies>
<!-- 利用Java開發 -->
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-table-api-java-bridge_${scala.binary.version}</artifactId>
<version>${flink.version}</version>
</dependency>
<!--使用Blink Planner-->
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-table-planner-blink_${scala.binary.version}</artifactId>
<version>${flink.version}</version>
</dependency>
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-table-planner_${scala.binary.version}</artifactId>
<version>${flink.version}</version>
</dependency>
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-connector-kafka_${scala.binary.version}</artifactId>
<version>${flink.version}</version>
</dependency>
<dependency>
<groupId>org.apache.kafka</groupId>
<artifactId>kafka-clients</artifactId>
<version>${kafka.version}</version>
</dependency>
<dependency>
<groupId>org.apache.kafka</groupId>
<artifactId>kafka_2.11</artifactId>
<version>2.4.1</version>
</dependency>
<!-- Kafka裡面的訊息採用Json格式 -->
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-json</artifactId>
<version>${flink.version}</version>
</dependency>
<!--提交作業所必須的依賴，比如：LocalExecutorFactory -->
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-clients_${scala.binary.version}</artifactId>
<version>${flink.version}</version>
<!-- <scope>provided</scope>-->
</dependency>
<!-- 日誌方便除錯 -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.7</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-statebackend-rocksdb_${scala.binary.version}</artifactId>
<version>${flink.version}</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.54</version>
</dependency>
<dependency>
<groupId>org.yaml</groupId>
<artifactId>snakeyaml</artifactId>
<version>1.27</version>
</dependency>
<dependency>
<groupId>com.oracle</groupId>
<artifactId>ojdbc6</artifactId>
<version>11.2.0.3</version>
</dependency>
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-connector-hive_${scala.binary.version}</artifactId>
<version>${flink.version}</version>
</dependency>
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-connector-filesystem_${scala.binary.version}</artifactId>
<version>${flink.version}</version>
</dependency>
<dependency>
<groupId>org.apache.bahir</groupId>
<artifactId>flink-connector-redis_${scala.binary.version}</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>dom4j</groupId>
<artifactId>dom4j</artifactId>
<version>1.6.1</version>
</dependency>
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-shaded-hadoop-2-uber</artifactId>
<version>2.6.5-8.0</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.48</version>
</dependency>
<!-- Hive Metastore -->
<dependency>
<groupId>org.apache.thrift</groupId>
<artifactId>libfb303</artifactId>
<version>0.9.0</version>
</dependency>
<dependency>
<groupId>org.apache.hive</groupId>
<artifactId>hive-metastore</artifactId>
<version>1.2.1</version>
<exclusions>
<exclusion>
<groupId>org.apache.hadoop</groupId>
<artifactId>*</artifactId>
</exclusion>
<exclusion>
<groupId>commons-cli</groupId>
<artifactId>*</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.apache.hive</groupId>
<artifactId>hive-exec</artifactId>
<version>1.2.1</version>
<exclusions>
<exclusion>
<groupId>commons-cli</groupId>
<artifactId>*</artifactId>
</exclusion>
<exclusion>
<groupId>com.google</groupId>
<artifactId>*</artifactId>
</exclusion>
<exclusion>
<groupId>org.apache.calcite</groupId>
<artifactId>*</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.6</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.17</version>
</dependency>
<dependency>
<groupId>org.apache.hive</groupId>
<artifactId>hive-jdbc</artifactId>
<version>${hive-jdbc.version}</version>
<exclusions>
<exclusion>
<groupId>org.eclipse.jetty.aggregate</groupId>
<artifactId>*</artifactId>
</exclusion>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.8.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<!-- We use the maven-shade plugin to create a fat jar that contains all necessary dependencies. -->
<!-- Change the value of <mainClass>...</mainClass> if your program entry point changes. -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>3.0.0</version>
<executions>
<!-- Run shade goal on package phase -->
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<artifactSet>
<excludes>
<exclude>org.apache.flink:force-shading</exclude>
<exclude>com.google.code.findbugs:jsr305</exclude>
<exclude>org.slf4j:*</exclude>
<exclude>log4j:*</exclude>
</excludes>
</artifactSet>
<filters>
<filter>
<!-- Do not copy the signatures in the META-INF folder.
Otherwise, this might cause SecurityExceptions when using the JAR. -->
<artifact>*:*</artifact>
<excludes>
<exclude>META-INF/*.SF</exclude>
<exclude>META-INF/*.DSA</exclude>
<exclude>META-INF/*.RSA</exclude>
</excludes>
</filter>
</filters>
<transformers>
<transformer
implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>com.tcloudata.App</mainClass>
</transformer>
<transformer
implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
<!-- Java Compiler -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
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