【Flink-Kafka-To-ClickHouse】使用 Flink 实现 Kafka 数据写入 ClickHouse
【Flink-Kafka-To-ClickHouse】使用 Flink 实现 Kafka 数据写入 ClickHouse
- 1）导入相关依赖
- 2）代码实现
-
- 2.1.resources
-
- 2.1.1.appconfig.yml
- 2.1.2.log4j.properties
- 2.1.3.log4j2.xml
- 2.1.4.flink_backup_local.yml
- 2.2.utils
-
- 2.2.1.DBConn
- 2.2.2.CommonUtils
- 2.2.3.RemoteConfigUtil
- 2.2.4.ClickhouseUtil
- 2.3.flatmap
-
- 2.3.1.FlatMapFunction
- 2.4.sink
-
- 2.4.1.ClickHouseCatalog
- 2.5.Kafka2ClickHouse
-
- 2.5.1.Kafka2chApp
- 2.5.2.Kafka2Ck-ODS
需求描述：
1、数据从 Kafka 写入 ClickHouse。
2、相关配置存放于 Mysql 中，通过 Mysql 进行动态读取。
3、此案例中的 Kafka 是进行了 Kerberos 安全认证的，如果不需要自行修改。
4、先在 ClickHouse 中创建表然后动态获取 ClickHouse 的表结构。
5、Kafka 数据为 Json 格式，通过 FlatMap 扁平化处理后，根据表结构封装到 Row 中后完成写入。
6、写入时转换成临时视图模式，利用 Flink-Sql 实现数据写入。
7、本地测试时可以编辑 resources.flink_backup_local.yml 通过 ConfigTools.initConf 方法获取配置。
1）导入相关依赖
这里的依赖比较冗余，大家可以根据各自需求做删除或保留。
<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>4.0.0modelVersion>
<groupId>gaei.cn.x5lgroupId>
<artifactId>kafka2chartifactId>
<version>1.0.0version>
<properties>
<hbase.version>2.3.3hbase.version>
<hadoop.version>3.1.1hadoop.version>
<spark.version>3.0.2spark.version>
<scala.version>2.12.10scala.version>
<maven.compiler.source>8maven.compiler.source>
<maven.compiler.target>8maven.compiler.target>
<project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
<flink.version>1.14.0flink.version>
<scala.binary.version>2.12scala.binary.version>
<target.java.version>1.8target.java.version>
<maven.compiler.source>${target.java.version}maven.compiler.source>
<maven.compiler.target>${target.java.version}maven.compiler.target>
<log4j.version>2.17.2log4j.version>
<hadoop.version>3.1.2hadoop.version>
<hive.version>3.1.2hive.version>
properties>
<dependencies>
<dependency>
<groupId>org.apache.flinkgroupId>
<artifactId>flink-javaartifactId>
<version>${flink.version}version>
<scope>providedscope>
dependency>
<dependency>
<groupId>org.apache.flinkgroupId>
<artifactId>flink-streaming-java_${scala.binary.version}artifactId>
<version>${flink.version}version>
<scope>providedscope>
dependency>
<dependency>
<groupId>org.apache.flinkgroupId>
<artifactId>flink-clients_${scala.binary.version}artifactId>
<version>${flink.version}version>
<scope>providedscope>
dependency>
<dependency>
<groupId>org.apache.flinkgroupId>
<artifactId>flink-table-api-java-bridge_${scala.binary.version}artifactId>
<version>1.14.0version>
<scope>providedscope>
dependency>
<dependency>
<groupId>org.apache.flinkgroupId>
<artifactId>flink-table-planner_${scala.binary.version}artifactId>
<version>${flink.version}version>
<scope>providedscope>
dependency>
<dependency>
<groupId>org.apache.flinkgroupId>
<artifactId>flink-streaming-scala_${scala.binary.version}artifactId>
<version>${flink.version}version>
<scope>providedscope>
dependency>
<dependency>
<groupId>org.apache.flinkgroupId>
<artifactId>flink-table-commonartifactId>
<version>${flink.version}version>
<scope>providedscope>
dependency>
<dependency>
<groupId>org.apache.flinkgroupId>
<artifactId>flink-cep_${scala.binary.version}artifactId>
<version>${flink.version}version>
dependency>
<dependency>
<groupId>org.apache.flinkgroupId>
<artifactId>flink-jsonartifactId>
<version>${flink.version}version>
<scope>providedscope>
dependency>
<dependency>
<groupId>org.apache.flinkgroupId>
<artifactId>flink-csvartifactId>
<version>${flink.version}version>
<scope>providedscope>
dependency>
<dependency>
<groupId>org.apache.flinkgroupId>
<artifactId>flink-state-processor-api_${scala.binary.version}artifactId>
<version>${flink.version}version>
<scope>providedscope>
dependency>
<dependency>
<groupId>commons-langgroupId>
<artifactId>commons-langartifactId>
<version>2.5version>
<scope>compilescope>
dependency>
<dependency>
<groupId>org.apache.flinkgroupId>
<artifactId>flink-runtime-web_${scala.binary.version}artifactId>
<version>${flink.version}version>
<scope>providedscope>
dependency>
<dependency>
<groupId>org.apache.logging.log4jgroupId>
<artifactId>log4j-slf4j-implartifactId>
<version>${log4j.version}version>
<scope>runtimescope>
dependency>
<dependency>
<groupId>org.apache.logging.log4jgroupId>
<artifactId>log4j-apiartifactId>
<version>${log4j.version}version>
<scope>runtimescope>
dependency>
<dependency>
<groupId>org.apache.logging.log4jgroupId>
<artifactId>log4j-coreartifactId>
<version>${log4j.version}version>
<scope>runtimescope>
dependency>
<dependency>
<groupId>org.apache.hadoopgroupId>
<artifactId>hadoop-clientartifactId>
<version>3.3.1version>
dependency>
<dependency>
<groupId>org.apache.hadoopgroupId>
<artifactId>hadoop-authartifactId>
<version>${hadoop.version}version>
dependency>
<dependency>
<groupId>org.apache.flinkgroupId>
<artifactId>flink-statebackend-rocksdb_${scala.binary.version}artifactId>
<version>${flink.version}version>
<scope>providedscope>
dependency>
<dependency>
<groupId>com.alibabagroupId>
<artifactId>fastjsonartifactId>
<version>1.1.23version>
dependency>
<dependency>
<groupId>org.projectlombokgroupId>
<artifactId>lombokartifactId>
<version>1.16.18version>
<scope>providedscope>
dependency>
<dependency>
<groupId>gaei.cn.x5l.bigdata.commongroupId>
<artifactId>x5l-bigdata-commonartifactId>
<version>1.3-SNAPSHOTversion>
<exclusions>
<exclusion>
<groupId>org.apache.logging.log4jgroupId>
<artifactId>log4j-coreartifactId>
exclusion>
<exclusion>
<groupId>org.apache.logging.log4jgroupId>
<artifactId>log4j-apiartifactId>
exclusion>
<exclusion>
<groupId>org.apache.logging.log4jgroupId>
<artifactId>log4j-slf4j-implartifactId>
exclusion>
exclusions>
dependency>
<dependency>
<groupId>org.apache.flinkgroupId>
<artifactId>flink-sql-connector-kafka_${scala.binary.version}artifactId>
<version>${flink.version}version>
dependency>
<dependency>
<groupId>org.apache.flinkgroupId>
<artifactId>flink-connector-jdbc_${scala.binary.version}artifactId>
<version>${flink.version}version>
dependency>
<dependency>
<groupId>org.apache.flinkgroupId>
<artifactId>flink-connector-clickhouseartifactId>
<version>1.14.3-SNAPSHOTversion>
dependency>
<dependency>
<groupId>gaei.cn.x5lgroupId>
<artifactId>tsp-gb-decodeartifactId>
<version>1.0.0version>
dependency>
<dependency>
<groupId>org.jyamlgroupId>
<artifactId>jyamlartifactId>
<version>1.3version>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<version>5.1.44version>
<scope>runtimescope>
dependency>
<dependency>
<groupId>gaei.cn.x5l.flink.commongroupId>
<artifactId>x5l-flink-commonartifactId>
<version>1.4-SNAPSHOTversion>
dependency>
dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.pluginsgroupId>
<artifactId>maven-compiler-pluginartifactId>
<version>3.1version>
<configuration>
<source>${target.java.version}source>
<target>${target.java.version}target>
configuration>
plugin>
<plugin>
<groupId>org.apache.maven.pluginsgroupId>
<artifactId>maven-shade-pluginartifactId>
<version>3.0.0version>
<executions>
<execution>
<phase>packagephase>
<goals>
<goal>shadegoal>
goals>
<configuration>
<artifactSet>
<excludes>
<exclude>org.apache.flink:force-shadingexclude>
<exclude>com.google.code.findbugs:jsr305exclude>
<exclude>org.slf4j:*exclude>
<exclude>org.apache.logging.log4j:*exclude>
<exclude>org.apache.flink:flink-runtime-web_2.11exclude>
excludes>
artifactSet>
<filters>
<filter>
<artifact>*:*artifact>
<excludes>
<exclude>META-INF/*.SFexclude>
<exclude>META-INF/*.DSAexclude>
<exclude>META-INF/*.RSAexclude>
excludes>
filter>
filters>
<transformers>
<transformer
implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>com.owp.flink.kafka.KafkaSourceDemomainClass>
transformer>
<transformer
implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
transformers>
configuration>
execution>
executions>
plugin>
plugins>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.eclipse.m2egroupId>
<artifactId>lifecycle-mappingartifactId>
<version>1.0.0version>
<configuration>
<lifecycleMappingMetadata>
<pluginExecutions>
<pluginExecution>
<pluginExecutionFilter>
<groupId>org.apache.maven.pluginsgroupId>
<artifactId>maven-shade-pluginartifactId>
<versionRange>[3.0.0,)versionRange>
<goals>
<goal>shadegoal>
goals>
pluginExecutionFilter>
<action>
<ignore/>
action>
pluginExecution>
<pluginExecution>
<pluginExecutionFilter>
<groupId>org.apache.maven.pluginsgroupId>
<artifactId>maven-compiler-pluginartifactId>
<versionRange>[3.1,)versionRange>
<goals>
<goal>testCompilegoal>
<goal>compilegoal>
goals>
pluginExecutionFilter>
<action>
<ignore/>
action>
pluginExecution>
pluginExecutions>
lifecycleMappingMetadata>
configuration>
plugin>
plugins>
pluginManagement>
build>
project>
2）代码实现
2.1.resources
2.1.1.appconfig.yml
mysql.url: "jdbc:mysql://1.1.1.1:3306/test?useSSL=false&useUnicode=true&characterEncoding=UTF8&connectTimeout=60000&socketTimeout=60000"
mysql.username: "test"
mysql.password: "123456"
mysql.driver: "com.mysql.jdbc.Driver"
2.1.2.log4j.properties
log4j.rootLogger=info, stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n
2.1.3.log4j2.xml
<?xml version="1.0" encoding="UTF-8"?>
<configuration monitorInterval="5">
<Properties>
<property name="LOG_PATTERN" value="%date{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n" />
<property name="LOG_LEVEL" value="ERROR" />
</Properties>
<appenders>
<console name="console" target="SYSTEM_OUT">
<PatternLayout pattern="${LOG_PATTERN}"/>
<ThresholdFilter level="${LOG_LEVEL}" onMatch="ACCEPT" onMismatch="DENY"/>
</console>
<File name="log" fileName="tmp/log/job.log" append="false">
<PatternLayout pattern="%d{HH:mm:ss.SSS} %-5level %class{36} %L %M - %msg%xEx%n"/>
</File>
</appenders>
<loggers>
<root level="${LOG_LEVEL}">
<appender-ref ref="console"/>
<appender-ref ref="log"/>
</root>
</loggers>
</configuration>
2.1.4.flink_backup_local.yml
clickhouse:
connector: 'clickhouse'
database-name: 'dwd'
driver: 'ru.yandex.clickhouse.ClickHouseDriver'
jdbcurl: 'jdbc:clickhouse://10.1.1.1:8123/dwd?socket_timeout=480000'
password: 'X8v@123456!%$'
reissueInterval: 3
sink.batch-size: '200000'
sink.flush-interval: '3000000'
sink.ignore-delete: 'true'
sink.max-retries: '3'
sink.partition-key: 'toYYYYMMDD(sample_date_time)'
sink.partition-strategy: 'balanced'
table-name: 'test_local'
url: 'clickhouse://10.1.1.1:8123,10.1.1.1:8123,10.1.1.1:8123,10.1.1.1:8123,10.1.1.1:8123'
username: 'test'
hdfs:
checkPointPath: 'hdfs://nameserver/user/flink/rocksdbcheckpoint'
checkpointTimeout: 360000
checkpointing: 300000
maxConcurrentCheckpoints: 1
minPauseBetweenCheckpoints: 10000
restartInterval: 60
restartStrategy: 3
kafka-consumer:
prop:
auto.offset.reset: 'earliest'
bootstrap.servers: 'kfk01:9092,kfk02:9092,kfk03:9092'
enable.auto.commit: 'false'
fetch.max.bytes: '52428700'
group.id: 'test'
isKerberized: '1'
keytab: 'D:/keytab/test.keytab'
krb5Conf: 'D:/keytab/krb5.conf'
max.poll.interval.ms: '300000'
max.poll.records: '1000'
principal: '[email protected]'
security_protocol: 'SASL_PLAINTEXT'
serviceName: 'kafka'
session.timeout.ms: '600000'
useTicketCache: 'false'
topics: 'topicA,topicB'
kafka-producer:
defaultTopic: 'kafka2hive_error'
prop:
acks: 'all'
batch.size: '1048576'
bootstrap.servers: 'kfk01:9092,kfk02:9092,kfk03:9092'
compression.type: 'lz4'
key.serializer: 'org.apache.kafka.common.serialization.StringSerializer'
retries: '3'
value.serializer: 'org.apache.kafka.common.serialization.StringSerializer'
2.2.utils
2.2.1.DBConn
import java.sql.*;
public class DBConn {
private static final String driver = "com.mysql.jdbc.Driver"; //mysql驱动
private static Connection conn = null;
private static PreparedStatement ps = null;
private static ResultSet rs = null;
private static final CallableStatement cs = null;
/**
* 连接数据库
* @return
*/
public static Connection conn(String url,String username,String password) {
Connection conn = null;
try {
Class.forName(driver); //加载数据库驱动
try {
conn = DriverManager.getConnection(url, username, password); //连接数据库
} catch (SQLException e) {
e.printStackTrace();
}
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
return conn;
}
/**
* 关闭数据库链接
* @return
*/
public static void close() {
if(conn != null) {
try {
conn.close(); //关闭数据库链接
} catch (SQLException e) {
e.printStackTrace();
}
}
}
}
2.2.2.CommonUtils
@Slf4j
public class CommonUtils {
public static StreamExecutionEnvironment setCheckpoint(StreamExecutionEnvironment env) throws IOException {
// ConfigTools.initConf("local");
Map hdfsMap = (Map) ConfigTools.mapConf.get("hdfs");
env.enableCheckpointing(((Integer) hdfsMap.get("checkpointing")).longValue(), CheckpointingMode.EXACTLY_ONCE);//这里会造成offset提交的延迟
env.getCheckpointConfig().setMinPauseBetweenCheckpoints(((Integer) hdfsMap.get("minPauseBetweenCheckpoints")).longValue());
env.getCheckpointConfig().setCheckpointTimeout(((Integer) hdfsMap.get("checkpointTimeout")).longValue());
env.getCheckpointConfig().setMaxConcurrentCheckpoints((Integer) hdfsMap.get("maxConcurrentCheckpoints"));
env.getCheckpointConfig().enableExternalizedCheckpoints(CheckpointConfig.ExternalizedCheckpointCleanup.RETAIN_ON_CANCELLATION);
env.setRestartStrategy(RestartStrategies.fixedDelayRestart(
(Integer) hdfsMap.get("restartStrategy"), // 尝试重启的次数，不宜过小，分布式任务很容易出问题（正常情况），建议3-5次
Time.of(((Integer) hdfsMap.get("restartInterval")).longValue(), TimeUnit.SECONDS) // 延时
));
//设置可容忍的检查点失败数，默认值为0表示不允许容忍任何检查点失败
env.getCheckpointConfig().setTolerableCheckpointFailureNumber(2);
//设置状态后端存储方式
env.setStateBackend(new RocksDBStateBackend((String) hdfsMap.get("checkPointPath"), true));
// env.setStateBackend(new FsStateBackend((String) hdfsMap.get("checkPointPath"), true));
// env.setStateBackend(new HashMapStateBackend(());
return env;
}
public static FlinkKafkaConsumer<ConsumerRecord<String, String>> getKafkaConsumer(Map<String, Object> kafkaConf) throws IOException {
String[] topics = ((String) kafkaConf.get("topics")).split(",");
log.info("监听的topic: {}", topics);
Properties properties = new Properties();
Map<String, String> kafkaProp = (Map<String, String>) kafkaConf.get("prop");
for (String key : kafkaProp.keySet()) {
properties.setProperty(key, kafkaProp.get(key).toString());
}
if (!StringUtils.isBlank((String) kafkaProp.get("isKerberized")) && "1".equals(kafkaProp.get("isKerberized"))) {
System.setProperty("java.security.krb5.conf", kafkaProp.get("krb5Conf"));
properties.put("security.protocol", kafkaProp.get("security_protocol"));
properties.put("sasl.jaas.config", "com.sun.security.auth.module.Krb5LoginModule required "
+ "useTicketCache=" + kafkaProp.get("useTicketCache") + " "
+ "serviceName=\"" + kafkaProp.get("serviceName") + "\" "
+ "useKeyTab=true "
+ "keyTab=\"" + kafkaProp.get("keytab").toString() + "\" "
+ "principal=\"" + kafkaProp.get("principal").toString() + "\";");
}
properties.put("key.serializer", "org.apache.flink.kafka.shaded.org.apache.kafka.common.serialization.ByteArrayDeserializer");
properties.put("value.serializer", "org.apache.flink.kafka.shaded.org.apache.kafka.common.serialization.ByteArrayDeserializer");
FlinkKafkaConsumer<ConsumerRecord<String, String>> consumerRecordFlinkKafkaConsumer = new FlinkKafkaConsumer<ConsumerRecord<String, String>>(Arrays.asList(topics), new KafkaDeserializationSchema<ConsumerRecord<String, String>>() {
@Override
public TypeInformation<ConsumerRecord<String, String>> getProducedType() {
return TypeInformation.of(new TypeHint<ConsumerRecord<String, String>>() {
});
}
@Override
public boolean isEndOfStream(ConsumerRecord<String, String> stringStringConsumerRecord) {
return false;
}
@Override
public ConsumerRecord<String, String> deserialize(ConsumerRecord<byte[], byte[]> record) throws Exception {
return new ConsumerRecord<String, String>(
record.topic(),
record.partition(),
record.offset(),
record.timestamp(),
record.timestampType(),
record.checksum(),
record.serializedKeySize(),
record.serializedValueSize(),
new String(record.key() == null ? "".getBytes(StandardCharsets.UTF_8) : record.key(), StandardCharsets.UTF_8),
new String(record.value() == null ? "{}".getBytes(StandardCharsets.UTF_8) : record.value(), StandardCharsets.UTF_8));
}
}, properties);
return consumerRecordFlinkKafkaConsumer;
}
}
2.2.3.RemoteConfigUtil
public class RemoteConfigUtil {
private static final Logger log = LoggerFactory.getLogger(RemoteConfigUtil.class);
private static Connection conn = null;
private static PreparedStatement ps = null;
private static ResultSet rs = null;
public static Map<String, Object> mapConf;
public RemoteConfigUtil() {
}
public static Map<String, Object> getByAppNameAndConfigName(String appName, String ConfigName) throws SQLException {
if (mapConf != null && mapConf.size() > 0) {
return mapConf;
} else {
Map<String, String> ymlMap = LocalConfigUtil.getYmlMap("/appconfig");
String username = (String)ymlMap.get("mysql.username");
String password = (String)ymlMap.get("mysql.password");
String url = (String)ymlMap.get("mysql.url");
String driver = (String)ymlMap.get("mysql.driver");
Connection conn = JdbcUtil.getConnection(url, username, password, driver);
PreparedStatement preparedStatement = null;
Map var14;
try {
String sql = "select config_context from base_app_config where app_name = '%s' and config_name = '%s'";
preparedStatement = conn.prepareStatement(String.format(sql, appName, ConfigName));
ResultSet rs = preparedStatement.executeQuery();
String config_context;
for(config_context = ""; rs.next(); config_context = rs.getString("config_context")) {
}
rs.close();
log.info("配置信息config_context: {}", config_context);
if (StringUtils.isNotBlank(config_context)) {
System.out.println(JSONObject.toJSONString(JSONObject.parseObject(config_context), new SerializerFeature[]{SerializerFeature.PrettyFormat}));
}
mapConf = (Map)JSON.parseObject(config_context, Map.class);
var14 = mapConf;
} finally {
if (preparedStatement != null) {
preparedStatement.close();
}
if (conn != null) {
conn.close();
}
}
return var14;
}
}
}
2.2.4.ClickhouseUtil
public class ClickhouseUtil {
public ClickhouseUtil() {
}
public static List<SchemaPo> getSchemaPoList(Map<String, Object> chMapConf) throws SQLException {
List schemaPos = new ArrayList();
Connection connection = null;
try {
String jdbcurl = (String) chMapConf.get("jdbcurl");
String driver = (String) chMapConf.get("driver");
String userName = (String) chMapConf.get("username");
String password = (String) chMapConf.get("password");
String databaseName = (String) chMapConf.get("database-name");
String tableName = (String) chMapConf.get("table-name");
connection = JdbcUtil.getConnection(jdbcurl, userName, password, driver);
DatabaseMetaData metaData = connection.getMetaData();
ResultSet colRet = metaData.getColumns((String) null, databaseName, tableName, "%");
System.out.println("表字段信息：");
while (colRet.next()) {
String columnName = colRet.getString("COLUMN_NAME");
String columnType = colRet.getString("TYPE_NAME");
schemaPos.add(new SchemaPo(columnName, columnType));
System.out.println(columnName + " " + columnType);
}
} finally {
try {
if (connection != null) {
connection.close();
}
} catch (SQLException var18) {
var18.printStackTrace();
}
}
return schemaPos;
}
public static String getCreateSinkTableSql(Map<String, Object> clickhouse, String sinkTableName, List<SchemaPo> schemaPos) {
StringBuilder sinkTableSql = new StringBuilder();
String userName = (String) clickhouse.get("username");
String password = (String) clickhouse.get("password");
String connector = (String) clickhouse.get("connector");
String databaseName = (String) clickhouse.get("database-name");
String url = (String) clickhouse.get("url");
String tableName = (String) clickhouse.get("table-name");
String sinkBatchSize = (String) clickhouse.get("sink.batch-size");
String sinkFlushInterval = (String) clickhouse.get("sink.flush-interval");
String sinkMaxRetries = (String) clickhouse.get("sink.max-retries");
String sinkPartitionStrategy = (String) clickhouse.get("sink.partition-strategy");
String sinkPartitionKey = (String) clickhouse.get("sink.partition-key");
String sinkIgnoreDelete = (String) clickhouse.get("sink.ignore-delete");
sinkTableSql.append(String.format("CREATE TABLE %s (\n", sinkTableName));
int i = 0;
Iterator var17 = schemaPos.iterator();
while (var17.hasNext()) {
SchemaPo schemaPo = (SchemaPo) var17.next();
++i;
String signal = schemaPo.getSignal();
String type = schemaPo.getType();
if ("UInt64".equalsIgnoreCase(type)) {
type = "BIGINT";
} else if ("Map(String,String)".equalsIgnoreCase(type)) {
type = "Map" ;
} else if ("Datetime".equalsIgnoreCase(type)) {
type = "Timestamp(0)";
} else {
type = "String";
}
sinkTableSql.append(String.format(" `%s` %s", signal, type));
sinkTableSql.append(i == schemaPos.size() ? ")" : ",\n");
}
sinkTableSql.append("WITH(\n");
sinkTableSql.append(String.format("'connector' = '%s',\n", connector));
sinkTableSql.append(String.format("'url' = '%s',\n", url));
sinkTableSql.append(String.format("'username' = '%s',\n", userName));
sinkTableSql.append(String.format("'password' = '%s',\n", password));
sinkTableSql.append(String.format("'url' = '%s',\n", url));
sinkTableSql.append(String.format("'database-name' = '%s',\n", databaseName));
sinkTableSql.append(String.format("'table-name' = '%s',\n", tableName));
sinkTableSql.append(String.format("'sink.batch-size' = '%s',\n", sinkBatchSize));
sinkTableSql.append(String.format("'sink.flush-interval' = '%s',\n", sinkFlushInterval));
sinkTableSql.append(String.format("'sink.max-retries' = '%s',\n", sinkMaxRetries));
sinkTableSql.append(String.format("'sink.partition-strategy' = 'hash',\n"));
sinkTableSql.append(String.format("'sink.partition-key' = 'sample_date_time',\n"));
sinkTableSql.append(String.format("'sink.ignore-delete' = '%s'\n", sinkIgnoreDelete));
sinkTableSql.append(" )");
return sinkTableSql.toString();
}
//转换成ck需要的格式
public static Row convertRow(Map<String, String> resultMap, List<SchemaPo> schemaPos) {
Row row = new Row(schemaPos.size());
for (int i = 0; i < schemaPos.size(); i++) {
SchemaPo schemaPo = schemaPos.get(i);
String valueStr = resultMap.get(schemaPo.getSignal());
if (StringUtils.isBlank(valueStr)) {
row.setField(i, null);
continue;
}
if ("UInt64".equalsIgnoreCase(schemaPo.getType())) {
Long svalue = Long.valueOf(valueStr);
row.setField(i, Math.abs(svalue));
} else if ("Int64".equalsIgnoreCase(schemaPo.getType())) {
Long svalue = Long.valueOf(valueStr);
row.setField(i, Math.abs(svalue));
} else if ("Int32".equalsIgnoreCase(schemaPo.getType())) {
Integer svalue = Integer.valueOf(valueStr);
row.setField(i, svalue);
} else if ("datetime".equalsIgnoreCase(schemaPo.getType())) {
try {
Date svalue = (new SimpleDateFormat("yyyy-MM-dd HH:mm:ss")).parse(valueStr);
Timestamp timestamp = new Timestamp(svalue.getTime());
row.setField(i, timestamp);
} catch (Exception ex) {
System.out.println(ex.getMessage());
System.out.println(Arrays.toString(ex.getStackTrace()));
}
} else {
row.setField(i, valueStr);
}
}
return row;
}
}
2.3.flatmap
2.3.1.FlatMapFunction
public interface FlatMapFunction {
public FlatMapFunction<ConsumerRecord<String, String>, Row> newInstance(List<SchemaPo> schemaPos);
}
2.4.sink
2.4.1.ClickHouseCatalog
public class ClickHouseCatalog extends AbstractCatalog {
private static final Logger LOG = LoggerFactory.getLogger(ClickHouseCatalog.class);
public static final String DEFAULT_DATABASE = "default";
private final String baseUrl;
private final String username;
private final String password;
private final boolean ignorePrimaryKey;
private final Map<String, String> properties;
private ClickHouseConnection connection;
public ClickHouseCatalog(String catalogName, Map<String, String> properties) {
this(catalogName, (String)properties.get("database-name"), (String)properties.get("url"), (String)properties.get("username"), (String)properties.get("password"), properties);
}
public ClickHouseCatalog(String catalogName, @Nullable String defaultDatabase, String baseUrl, String username, String password) {
this(catalogName, defaultDatabase, baseUrl, username, password, Collections.emptyMap());
}
public ClickHouseCatalog(String catalogName, @Nullable String defaultDatabase, String baseUrl, String username, String password, Map<String, String> properties) {
super(catalogName, defaultDatabase == null ? "default" : defaultDatabase);
Preconditions.checkArgument(!StringUtils.isNullOrWhitespaceOnly(baseUrl), "baseUrl cannot be null or empty");
Preconditions.checkArgument(!StringUtils.isNullOrWhitespaceOnly(username), "username cannot be null or empty");
Preconditions.checkArgument(!StringUtils.isNullOrWhitespaceOnly(password), "password cannot be null or empty");
this.baseUrl = baseUrl.endsWith("/") ? baseUrl : baseUrl + "/";
this.username = username;
this.password = password;
this.ignorePrimaryKey = properties.get("catalog.ignore-primary-key") == null || Boolean.parseBoolean((String)properties.get("catalog.ignore-primary-key"));
this.properties = Collections.unmodifiableMap(properties);
}
public void open() throws CatalogException {
try {
Properties configuration = new Properties();
configuration.putAll(this.properties);
configuration.setProperty(ClickHouseQueryParam.USER.getKey(), this.username);
configuration.setProperty(ClickHouseQueryParam.PASSWORD.getKey(), this.password);
configuration.setProperty("socket_timeout", "600000");
String jdbcUrl = ClickHouseUtil.getJdbcUrl(this.baseUrl, this.getDefaultDatabase());
BalancedClickhouseDataSource dataSource = new BalancedClickhouseDataSource(jdbcUrl, configuration);
dataSource.actualize();
this.connection = dataSource.getConnection();
LOG.info("Created catalog {}, established connection to {}", this.getName(), jdbcUrl);
} catch (Exception var4) {
throw new CatalogException(String.format("Opening catalog %s failed.", this.getName()), var4);
}
}
public synchronized void close() throws CatalogException {
try {
this.connection.close();
LOG.info("Closed catalog {} ", this.getName());
} catch (Exception var2) {
throw new CatalogException(String.format("Closing catalog %s failed.", this.getName()), var2);
}
}
public Optional<Factory> getFactory() {
return Optional.of(new ClickHouseDynamicTableFactory());
}
public synchronized List<String> listDatabases() throws CatalogException {
try {
PreparedStatement stmt = this.connection.prepareStatement("SELECT name from `system`.databases");
Throwable var2 = null;
try {
ResultSet rs = stmt.executeQuery();
Throwable var4 = null;
try {
List<String> databases = new ArrayList();
while(rs.next()) {
databases.add(rs.getString(1));
}
return databases;
} catch (Throwable var31) {
var4 = var31;
throw var31;
} finally {
if (rs != null) {
if (var4 != null) {
try {
rs.close();
} catch (Throwable var30) {
var4.addSuppressed(var30);
}
} else {
rs.close();
}
}
}
} catch (Throwable var33) {
var2 = var33;
throw var33;
} finally {
if (stmt != null) {
if (var2 != null) {
try {
stmt.close();
} catch (Throwable var29) {
var2.addSuppressed(var29);
}
} else {
stmt.close();
}
}
}
} catch (Exception var35) {
throw new CatalogException(String.format("Failed listing database in catalog %s", this.getName()), var35);
}
}
public CatalogDatabase getDatabase(String databaseName) throws DatabaseNotExistException, CatalogException {
if (this.listDatabases().contains(databaseName)) {
return new CatalogDatabaseImpl(Collections.emptyMap(), (String)null);
} else {
throw new DatabaseNotExistException(this.getName(), databaseName);
}
}
public boolean databaseExists(String databaseName) throws CatalogException {
Preconditions.checkArgument(!StringUtils.isNullOrWhitespaceOnly(databaseName));
return this.listDatabases().contains(databaseName);
}
public void createDatabase(String name, CatalogDatabase database, boolean ignoreIfExists) throws DatabaseAlreadyExistException, CatalogException {
throw new UnsupportedOperationException();
}
public void dropDatabase(String name, boolean ignoreIfNotExists, boolean cascade) throws DatabaseNotEmptyException, CatalogException {
throw new UnsupportedOperationException();
}
public void alterDatabase(String name, CatalogDatabase newDatabase, boolean ignoreIfNotExists) throws DatabaseNotExistException, CatalogException {
throw new UnsupportedOperationException();
}
public synchronized List<String> listTables(String databaseName) throws DatabaseNotExistException, CatalogException {
if (!this.databaseExists(databaseName)) {
throw new DatabaseNotExistException(this.getName(), databaseName);
} else {
try {
PreparedStatement stmt = this.connection.prepareStatement(String.format("SELECT name from `system`.tables where database = '%s'", databaseName));
Throwable var3 = null;
try {
ResultSet rs = stmt.executeQuery();
Throwable var5 = null;
try {
List<String> tables = new ArrayList();
while(rs.next()) {
tables.add(rs.getString(1));
}
return tables;
} catch (Throwable var32) {
var5 = var32;
throw var32;
} finally {
if (rs != null) {
if (var5 != null) {
try {
rs.close();
} catch (Throwable var31) {
var5.addSuppressed(var31);
}
} else {
rs.close();
}
}
}
} catch (Throwable var34) {
var3 = var34;
throw var34;
} finally {
if (stmt != null) {
if (var3 != null) {
try {
stmt.close();
} catch (Throwable var30) {
var3.addSuppressed(var30);
}
} else {
stmt.close();
}
}
}
} catch (Exception var36) {
throw new CatalogException(String.format("Failed listing tables in catalog %s database %s", this.getName(), databaseName), var36);
}
}
}
public List<String> listViews(String databaseName) throws DatabaseNotExistException, CatalogException {
throw new UnsupportedOperationException();
}
public CatalogBaseTable getTable(ObjectPath tablePath) throws TableNotExistException, CatalogException {
if (!this.tableExists(tablePath)) {
throw new TableNotExistException(this.getName(), tablePath);
} else {
Map<String, String> configuration = new HashMap(this.properties);
configuration.put("url", this.baseUrl);
configuration.put("database-name", tablePath.getDatabaseName());
configuration.put("table-name", tablePath.getObjectName());
configuration.put("username", this.username);
configuration.put("password", this.password);
String databaseName = tablePath.getDatabaseName();
String tableName = tablePath.getObjectName();
try {
DistributedEngineFullSchema engineFullSchema = ClickHouseUtil.getAndParseDistributedEngineSchema(this.connection, tablePath.getDatabaseName(), tablePath.getObjectName());
if (engineFullSchema != null) {
databaseName = engineFullSchema.getDatabase();
tableName = engineFullSchema.getTable();
}
} catch (Exception var6) {
throw new CatalogException(String.format("Failed getting engine full of %s.%s.%s", this.getName(), databaseName, tableName), var6);
}
return new CatalogTableImpl(this.createTableSchema(databaseName, tableName), this.getPartitionKeys(databaseName, tableName), configuration, "");
}
}
private synchronized TableSchema createTableSchema(String databaseName, String tableName) {
try {
PreparedStatement stmt = this.connection.prepareStatement(String.format("SELECT * from `%s`.`%s` limit 0", databaseName, tableName));
Throwable var4 = null;
TableSchema var24;
try {
ClickHouseResultSetMetaData metaData = (ClickHouseResultSetMetaData)stmt.getMetaData().unwrap(ClickHouseResultSetMetaData.class);
Method getColMethod = metaData.getClass().getDeclaredMethod("getCol", Integer.TYPE);
getColMethod.setAccessible(true);
List<String> primaryKeys = this.getPrimaryKeys(databaseName, tableName);
TableSchema.Builder builder = TableSchema.builder();
for(int idx = 1; idx <= metaData.getColumnCount(); ++idx) {
ClickHouseColumnInfo columnInfo = (ClickHouseColumnInfo)getColMethod.invoke(metaData, idx);
String columnName = columnInfo.getColumnName();
DataType columnType = ClickHouseTypeUtil.toFlinkType(columnInfo);
if (primaryKeys.contains(columnName)) {
columnType = (DataType)columnType.notNull();
}
builder.field(columnName, columnType);
}
if (!primaryKeys.isEmpty()) {
builder.primaryKey((String[])primaryKeys.toArray(new String[0]));
}
var24 = builder.build();
} catch (Throwable var21) {
var4 = var21;
throw var21;
} finally {
if (stmt != null) {
if (var4 != null) {
try {
stmt.close();
} catch (Throwable var20) {
var4.addSuppressed(var20);
}
} else {
stmt.close();
}
}
}
return var24;
} catch (Exception var23) {
throw new CatalogException(String.format("Failed getting columns in catalog %s database %s table %s", this.getName(), databaseName, tableName), var23);
}
}
private List<String> getPrimaryKeys(String databaseName, String tableName) {
if (this.ignorePrimaryKey) {
return Collections.emptyList();
} else {
try {
PreparedStatement stmt = this.connection.prepareStatement(String.format("SELECT name from `system`.columns where `database` = '%s' and `table` = '%s' and is_in_primary_key = 1", databaseName, tableName));
Throwable var4 = null;
try {
ResultSet rs = stmt.executeQuery();
Throwable var6 = null;
try {
List<String> primaryKeys = new ArrayList();
while(rs.next()) {
primaryKeys.add(rs.getString(1));
}
return primaryKeys;
} catch (Throwable var33) {
var6 = var33;
throw var33;
} finally {
if (rs != null) {
if (var6 != null) {
try {
rs.close();
} catch (Throwable var32) {
var6.addSuppressed(var32);
}
} else {
rs.close();
}
}
}
} catch (Throwable var35) {
var4 = var35;
throw var35;
} finally {
if (stmt != null) {
if (var4 != null) {
try {
stmt.close();
} catch (Throwable var31) {
var4.addSuppressed(var31);
}
} else {
stmt.close();
}
}
}
} catch (Exception var37) {
throw new CatalogException(String.format("Failed getting primary keys in catalog %s database %s table %s", this.getName(), databaseName, tableName), var37);
}
}
}
private List<String> getPartitionKeys(String databaseName, String tableName) {
try {
PreparedStatement stmt = this.connection.prepareStatement(String.format("SELECT name from `system`.columns where `database` = '%s' and `table` = '%s' and is_in_partition_key = 1", databaseName, tableName));
Throwable var4 = null;
try {
ResultSet rs = stmt.executeQuery();
Throwable var6 = null;
try {
List<String> partitionKeys = new ArrayList();
while(rs.next()) {
partitionKeys.add(rs.getString(1));
}
return partitionKeys;
} catch (Throwable var33) {
var6 = var33;
throw var33;
} finally {
if (rs != null) {
if (var6 != null) {
try {
rs.close();
} catch (Throwable var32) {
var6.addSuppressed(var32);
}
} else {
rs.close();
}
}
}
} catch (Throwable var35) {
var4 = var35;
throw var35;
} finally {
if (stmt != null) {
if (var4 != null) {
try {
stmt.close();
} catch (Throwable var31) {
var4.addSuppressed(var31);
}
} else {
stmt.close();
}
}
}
} catch (Exception var37) {
throw new CatalogException(String.format("Failed getting partition keys of %s.%s.%s", this.getName(), databaseName, tableName), var37);
}
}
public boolean tableExists(ObjectPath tablePath) throws CatalogException {
try {
return this.databaseExists(tablePath.getDatabaseName()) && this.listTables(tablePath.getDatabaseName()).contains(tablePath.getObjectName());
} catch (DatabaseNotExistException var3) {
return false;
}
}
public void dropTable(ObjectPath tablePath, boolean ignoreIfNotExists) throws TableNotExistException, CatalogException {
throw new UnsupportedOperationException();
}
public void renameTable(ObjectPath tablePath, String newTableName, boolean ignoreIfNotExists) throws TableNotExistException, TableAlreadyExistException, CatalogException {
throw new UnsupportedOperationException();
}
public void createTable(ObjectPath tablePath, CatalogBaseTable table, boolean ignoreIfExists) throws TableAlreadyExistException, DatabaseNotExistException, CatalogException {
throw new UnsupportedOperationException();
}
public void alterTable(ObjectPath tablePath, CatalogBaseTable newTable, boolean ignoreIfNotExists) throws TableNotExistException, CatalogException {
throw new UnsupportedOperationException();
}
public List<CatalogPartitionSpec> listPartitions(ObjectPath tablePath) throws TableNotExistException, TableNotPartitionedException, CatalogException {
return Collections.emptyList();
}
public List<CatalogPartitionSpec> listPartitions(ObjectPath tablePath, CatalogPartitionSpec partitionSpec) throws TableNotExistException, TableNotPartitionedException, PartitionSpecInvalidException, CatalogException {
return Collections.emptyList();
}
public List<CatalogPartitionSpec> listPartitionsByFilter(ObjectPath tablePath, List<Expression> filters) throws TableNotExistException, TableNotPartitionedException, CatalogException {
return Collections.emptyList();
}
public CatalogPartition getPartition(ObjectPath tablePath, CatalogPartitionSpec partitionSpec) throws PartitionNotExistException, CatalogException {
throw new PartitionNotExistException(this.getName(), tablePath, partitionSpec);
}
public boolean partitionExists(ObjectPath tablePath, CatalogPartitionSpec partitionSpec) throws CatalogException {
throw new UnsupportedOperationException();
}
public void createPartition(ObjectPath tablePath, CatalogPartitionSpec partitionSpec, CatalogPartition partition, boolean ignoreIfExists) throws TableNotExistException, TableNotPartitionedException, PartitionSpecInvalidException, PartitionAlreadyExistsException, CatalogException {
throw new UnsupportedOperationException();
}
public void dropPartition(ObjectPath tablePath, CatalogPartitionSpec partitionSpec, boolean ignoreIfNotExists) throws PartitionNotExistException, CatalogException {
throw new UnsupportedOperationException();
}
public void alterPartition(ObjectPath tablePath, CatalogPartitionSpec partitionSpec, CatalogPartition newPartition, boolean ignoreIfNotExists) throws PartitionNotExistException, CatalogException {
throw new UnsupportedOperationException();
}
public List<String> listFunctions(String dbName) throws DatabaseNotExistException, CatalogException {
return Collections.emptyList();
}
public CatalogFunction getFunction(ObjectPath functionPath) throws FunctionNotExistException, CatalogException {
throw new FunctionNotExistException(this.getName(), functionPath);
}
public boolean functionExists(ObjectPath functionPath) throws CatalogException {
return false;
}
public void createFunction(ObjectPath functionPath, CatalogFunction function, boolean ignoreIfExists) throws FunctionAlreadyExistException, DatabaseNotExistException, CatalogException {
throw new UnsupportedOperationException();
}
public void alterFunction(ObjectPath functionPath, CatalogFunction newFunction, boolean ignoreIfNotExists) throws FunctionNotExistException, CatalogException {
throw new UnsupportedOperationException();
}
public void dropFunction(ObjectPath functionPath, boolean ignoreIfNotExists) throws FunctionNotExistException, CatalogException {
throw new UnsupportedOperationException();
}
public CatalogTableStatistics getTableStatistics(ObjectPath tablePath) throws TableNotExistException, CatalogException {
return CatalogTableStatistics.UNKNOWN;
}
public CatalogColumnStatistics getTableColumnStatistics(ObjectPath tablePath) throws TableNotExistException, CatalogException {
return CatalogColumnStatistics.UNKNOWN;
}
public CatalogTableStatistics getPartitionStatistics(ObjectPath tablePath, CatalogPartitionSpec partitionSpec) throws PartitionNotExistException, CatalogException {
return CatalogTableStatistics.UNKNOWN;
}
public CatalogColumnStatistics getPartitionColumnStatistics(ObjectPath tablePath, CatalogPartitionSpec partitionSpec) throws PartitionNotExistException, CatalogException {
return CatalogColumnStatistics.UNKNOWN;
}
public void alterTableStatistics(ObjectPath tablePath, CatalogTableStatistics tableStatistics, boolean ignoreIfNotExists) throws TableNotExistException, CatalogException {
throw new UnsupportedOperationException();
}
public void alterTableColumnStatistics(ObjectPath tablePath, CatalogColumnStatistics columnStatistics, boolean ignoreIfNotExists) throws TableNotExistException, CatalogException, TablePartitionedException {
throw new UnsupportedOperationException();
}
public void alterPartitionStatistics(ObjectPath tablePath, CatalogPartitionSpec partitionSpec, CatalogTableStatistics partitionStatistics, boolean ignoreIfNotExists) throws PartitionNotExistException, CatalogException {
throw new UnsupportedOperationException();
}
public void alterPartitionColumnStatistics(ObjectPath tablePath, CatalogPartitionSpec partitionSpec, CatalogColumnStatistics columnStatistics, boolean ignoreIfNotExists) throws PartitionNotExistException, CatalogException {
throw new UnsupportedOperationException();
}
}
2.5.Kafka2ClickHouse
2.5.1.Kafka2chApp
public class Kafka2chApp {
private static final Logger log = LoggerFactory.getLogger(Kafka2chApp.class);
private static String SINK_TABLE = "sinkTable";
private static String KAFKA_TEMP_VIEW = "kafkaTempView";
/**
* @param appName mysql配置表对应字段
* @param configName mysql配置表对应字段
* @throws Exception
*/
public static void run(String appName, String configName, FlatMapFunction FlatMapFunction) throws Exception {
log.info("Kafka2chApp.run传参appName:{}, configName:{}", appName, configName);
// 获得数据库中的配置
Map<String, Object> mapConf = RemoteConfigUtil.getByAppNameAndConfigName(appName, configName);
if (mapConf == null || mapConf.size() == 0) return;
Map<String, Object> clickhouseConf = (Map<String, Object>) mapConf.get("clickhouse");
Map<String, Object> kafkaConsumerConf = (Map<String, Object>) mapConf.get("kafka-consumer");
Map<String, Object> hdfsConf = (Map<String, Object>) mapConf.get("hdfs");
// long beforeTime2Dropout = System.currentTimeMillis() - (Long) mapConf.get("before2DropoutHourStep") * 3600;
// long after2DropoutTime = System.currentTimeMillis();
// 初始化TableEnv & 获得流
StreamExecutionEnvironment streamEnv = StreamEnv.getStreamEnv(hdfsConf);
streamEnv.setParallelism(ckP);
StreamTableEnvironment tableEnv = TableEnv.getTableEnv();
// 处理
List<SchemaPo> schemaPos = ClickhouseUtil.getSchemaPoList(clickhouseConf);
TypeInformation[] types = getTypeInformationArray(schemaPos);
// TypeInformation[] types = (schemaPos);
String[] fieldNames = SchemaPoUtil.getFieldLists(schemaPos);
FlatMapFunction<ConsumerRecord<String, String>, Row> flatMapFunction = x5lFlatMapFunction.newInstance(schemaPos);
DataStreamSource<ConsumerRecord<String, String>> stream;
SingleOutputStreamOperator<Row> infos;
stream = streamEnv.addSource(CommonUtils.getKafkaConsumer(kafkaConsumerConf));
System.out.println("Source 设置并行度为"+streamEnv.getParallelism());
}
infos = stream.flatMap(flatMapFunction);
infos = infos.map(e -> e,new RowTypeInfo(types, fieldNames));
System.out.println("map 设置并行度为"+streamEnv.getParallelism());
}
// 创建kafka数据临时视图
tableEnv.createTemporaryView(KAFKA_TEMP_VIEW, infos);
// 创建存放kafka数据的clickhouse映射表
// String createSinkTableSql = ClickhouseUtil.getCreateSinkTableSql(clickhouseConf, SINK_TABLE, schemaPos);
Map<String, String> props = new HashMap<>();
props.put(ClickHouseConfig.DATABASE_NAME, (String) clickhouseConf.get("database-name"));
props.put(ClickHouseConfig.URL, (String) clickhouseConf.get("url"));
props.put(ClickHouseConfig.USERNAME, (String) clickhouseConf.get("username"));
props.put(ClickHouseConfig.PASSWORD, (String) clickhouseConf.get("password"));
props.put(ClickHouseConfig.SINK_FLUSH_INTERVAL, (String) clickhouseConf.get("sink.flush-interval"));
props.put(ClickHouseConfig.SINK_BATCH_SIZE, (String) clickhouseConf.get("sink.batch-size"));
Catalog cHcatalog = new ClickHouseCatalog("clickhouse", props);
tableEnv.registerCatalog("clickhouse", cHcatalog);
tableEnv.useCatalog("clickhouse");
// Arrays.stream(tableEnv.listCatalogs()).forEach(e -> System.out.println("catalog: " + e));
// Arrays.stream(tableEnv.listDatabases()).forEach(e -> System.out.println("database: " + e));
// System.out.println(tableEnv.listTables().length);
// Arrays.stream(tableEnv.listTables()).forEach(e -> System.out.println("table: " + e));
// tableEnv.executeSql(createSinkTableSql);
// System.out.println(tableEnv.executeSql("select * from " + KAFKA_TEMP_VIEW).getTableSchema());
//拼接sql
String insertSql = "insert into `" + clickhouseConf.get("table-name") + "` select * from default_catalog.default_database." + KAFKA_TEMP_VIEW;
// System.out.println("insertSql: " + insertSql);
// log.info("insertSql: ", insertSql);
//执行sql
tableEnv.executeSql(insertSql);
// 测试打印infos结果
/*infos.print();
streamEnv.executeAsync();*/
}
public static TypeInformation[] getTypeInformationArray(List<SchemaPo> schemaPos) {
// String[] fieldNames = new String[columnTypeMap.size()];
TypeInformation[] types = new TypeInformation[schemaPos.size()];
int i = 0;
for (SchemaPo po : schemaPos) {
if ("String".equalsIgnoreCase(po.getType())) {
types[i] = Types.STRING;
} else if ("Int64".equalsIgnoreCase(po.getType())) {
types[i] = Types.LONG;
} else if ("UInt64".equalsIgnoreCase(po.getType())) {
types[i] = Types.LONG;
} else if ("Int32".equalsIgnoreCase(po.getType())) {
types[i] = Types.INT;
} else if ("Int8".equalsIgnoreCase(po.getType())) {
types[i] = Types.INT;
} else if ("datetime".equalsIgnoreCase(po.getType())) {
types[i] = Types.SQL_TIMESTAMP;
} else if ("Map(String,String)".equalsIgnoreCase(po.getType())) {
types[i] = Types.MAP(Types.STRING, Types.STRING);
} else {
types[i] = Types.STRING;
}
i++;
}
return types;
}
}
2.5.2.Kafka2Ck-ODS
public class Kafka2Ck-ODS implements FlatMapFunction {
private static Logger logger = Logger.getLogger(Kafka2Ck-ODS.class);
public static void main(String[] args) throws Exception {
Kafka2chApp.run(Kafka2Ck-ODS.class.getName(), args[0], new Kafka2Ck-ODS());
}
@Override
public FlatMapFunction<ConsumerRecord<String, String>, Row> newInstance(List<SchemaPo> schemaPos) {
return new FlatMapFunction<ConsumerRecord<String, String>, Row>() {
@Override
public void flatMap(ConsumerRecord<String, String> record, Collector<Row> out) throws Exception {
// System.out.println("record ===> " +record); // 测试
String value = record.value();
try {
HashMap<String, Object> infoMap = JSON.parseObject(value, HashMap.class);
// 处理dataListMap中的数据
for (Map.Entry<String, String> entry : dataListMap.entrySet()) {
String key = entry.getKey();
String value1 = entry.getValue();
resultMap.put(key.toLowerCase(), value1);
}
Row row = TableEnv.getRowBySchemaPo1(resultMap, schemaPos);
out.collect(row);
} catch (Exception e) {
e.printStackTrace();
System.out.printf("数据异常，原因是%s,topic为%s,key为%s,value为%s%n", e.getMessage(), record.topic(), record.key(), record.value());
}
}
};
}
}