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aiceflower pushed a commit to branch release-0.9.4
in repository https://gitbox.apache.org/repos/asf/linkis.git

commit ab994be708203d1948ae0b3064bbf7ed4513044d
Author: kantlin <[email protected]>
AuthorDate: Fri Feb 28 22:51:58 2020 +0800

    Fixed #301
---
 datasource/metadatamanager/elasticsearch/pom.xml   |  78 ++++++++++++
 .../metadatamanager/service/ElasticConnection.java | 140 +++++++++++++++++++++
 .../service/ElasticMetaService.java                |  87 +++++++++++++
 .../service/ElasticParamsMapper.java               |  32 +++++
 .../src/main/resources/application.yml             |  23 ++++
 .../src/main/resources/linkis.properties           |  21 ++++
 .../src/main/resources/log4j.properties            |  33 +++++
 .../elasticsearch/src/main/resources/log4j2.xml    |  35 ++++++
 .../service/receiver/ElasticReceiver.scala         |  29 +++++
 9 files changed, 478 insertions(+)

diff --git a/datasource/metadatamanager/elasticsearch/pom.xml 
b/datasource/metadatamanager/elasticsearch/pom.xml
new file mode 100644
index 0000000000..4727619725
--- /dev/null
+++ b/datasource/metadatamanager/elasticsearch/pom.xml
@@ -0,0 +1,78 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<!--
+  ~ Copyright 2019 WeBank
+  ~ 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.
+  -->
+
+<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";>
+  <parent>
+    <artifactId>linkis</artifactId>
+    <groupId>com.webank.wedatasphere.linkis</groupId>
+    <version>0.9.3</version>
+  </parent>
+  <modelVersion>4.0.0</modelVersion>
+
+  <artifactId>linkis-metadatamanager-service-es</artifactId>
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    <es.version>6.7.1</es.version>
+  </properties>
+
+  <dependencies>
+    <dependency>
+      <groupId>com.webank.wedatasphere.linkis</groupId>
+      <artifactId>linkis-metadatamanager-common</artifactId>
+      <version>${linkis.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>com.webank.wedatasphere.linkis</groupId>
+      <artifactId>linkis-module</artifactId>
+      <version>${linkis.version}</version>
+      <exclusions>
+        <exclusion>
+          <artifactId>asm</artifactId>
+          <groupId>org.ow2.asm</groupId>
+        </exclusion>
+      </exclusions>
+    </dependency>
+    <dependency>
+      <groupId>org.elasticsearch.client</groupId>
+      <artifactId>elasticsearch-rest-client</artifactId>
+      <version>${es.version}</version>
+    </dependency>
+  </dependencies>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-deploy-plugin</artifactId>
+      </plugin>
+
+      <plugin>
+        <groupId>net.alchim31.maven</groupId>
+        <artifactId>scala-maven-plugin</artifactId>
+      </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-jar-plugin</artifactId>
+      </plugin>
+    </plugins>
+    <resources>
+      <resource>
+        <directory>src/main/resources</directory>
+      </resource>
+    </resources>
+    <finalName>${project.artifactId}-${project.version}</finalName>
+  </build>
+</project>
diff --git 
a/datasource/metadatamanager/elasticsearch/src/main/java/com/webank/wedatasphere/linkis/metadatamanager/service/ElasticConnection.java
 
b/datasource/metadatamanager/elasticsearch/src/main/java/com/webank/wedatasphere/linkis/metadatamanager/service/ElasticConnection.java
new file mode 100644
index 0000000000..b485c69a3a
--- /dev/null
+++ 
b/datasource/metadatamanager/elasticsearch/src/main/java/com/webank/wedatasphere/linkis/metadatamanager/service/ElasticConnection.java
@@ -0,0 +1,140 @@
+/*
+ * Copyright 2019 WeBank
+ * 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.webank.wedatasphere.linkis.metadatamanager.service;
+
+import com.webank.wedatasphere.linkis.metadatamanager.common.Json;
+import org.apache.commons.lang.StringUtils;
+import org.apache.http.HttpHost;
+import org.apache.http.auth.AuthScope;
+import org.apache.http.auth.UsernamePasswordCredentials;
+import org.apache.http.client.CredentialsProvider;
+import org.apache.http.impl.client.BasicCredentialsProvider;
+import org.apache.http.impl.nio.reactor.IOReactorConfig;
+import org.elasticsearch.client.Request;
+import org.elasticsearch.client.Response;
+import org.elasticsearch.client.RestClient;
+import org.elasticsearch.client.RestClientBuilder;
+
+import java.io.Closeable;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * @author davidhua
+ * 2020/02/14
+ */
+public class ElasticConnection implements Closeable {
+
+    public static final String DEFAULT_TYPE_NAME = "type";
+
+    private static final String DEFAULT_MAPPING_NAME = "mappings";
+    private static final String DEFAULT_INDEX_NAME = "index";
+    private static final String FIELD_PROPS = "properties";
+
+    private RestClient restClient;
+
+    public ElasticConnection(String[] endPoints, String username, String 
password) throws IOException {
+        HttpHost[] httpHosts = new HttpHost[endPoints.length];
+        for(int i = 0; i < endPoints.length; i++){
+            httpHosts[i] = HttpHost.create(endPoints[i]);
+        }
+        RestClientBuilder restClientBuilder = RestClient.builder(httpHosts);
+        CredentialsProvider credentialsProvider = null;
+        if(StringUtils.isNotBlank(username) && 
StringUtils.isNotBlank(password)){
+            credentialsProvider = new BasicCredentialsProvider();
+            credentialsProvider.setCredentials(AuthScope.ANY,
+                    new UsernamePasswordCredentials(username, password));
+        }
+        //set only one thread
+        CredentialsProvider finalCredentialsProvider = credentialsProvider;
+        restClientBuilder.setHttpClientConfigCallback(httpClientBuilder -> {
+            if(null != finalCredentialsProvider){
+                httpClientBuilder
+                        
.setDefaultCredentialsProvider(finalCredentialsProvider);
+            }
+            return 
httpClientBuilder.setDefaultIOReactorConfig(IOReactorConfig.custom().setIoThreadCount(1).build());
+        });
+        this.restClient = restClientBuilder.build();
+        //Try to test connection
+        ping();
+    }
+
+    public List<String> getAllIndices() throws IOException {
+        List<String> indices = new ArrayList<>();
+        Request request = new Request("GET", "_cat/indices");
+        request.addParameter("format", "JSON");
+        Response response = restClient.performRequest(request);
+        List<Map<String, Object>> list = 
Json.fromJson(response.getEntity().getContent(), Map.class);
+        list.forEach( v ->{
+            String index = String.valueOf(v.getOrDefault(DEFAULT_INDEX_NAME, 
""));
+            if(StringUtils.isNotBlank(index) && !index.startsWith(".")){
+                indices.add(index);
+            }
+        });
+        return indices;
+    }
+
+    public List<String> getTypes(String index) throws IOException{
+        List<String> types = new ArrayList<>();
+        Request request = new Request("GET", index +"/_mappings");
+        Response response = restClient.performRequest(request);
+        Map<String, Map<String, Object>> result =
+                Json.fromJson(response.getEntity().getContent(), Map.class);
+        Map<String, Object> indexMap = result.get(index);
+        Object props = indexMap.get(DEFAULT_MAPPING_NAME);
+        if(props instanceof Map){
+            Set keySet = ((Map)props).keySet();
+            for(Object v : keySet){
+                types.add(String.valueOf(v));
+            }
+        }
+        return types;
+    }
+
+    public Map<Object, Object> getProps(String index, String type) throws 
IOException{
+        Request request = new Request("GET", index + "/_mappings/" + type);
+        Response response = restClient.performRequest(request);
+        Map<String, Map<String, Object>> result =
+                Json.fromJson(response.getEntity().getContent(), Map.class);
+        Map mappings = (Map)result.get(index).get("mappings");
+        Map propsMap = mappings;
+        if(mappings.containsKey(type)){
+            Object typeMap = mappings.get(type);
+            if(typeMap instanceof Map){
+                propsMap = (Map)typeMap;
+            }
+        }
+        Object props = propsMap.get(FIELD_PROPS);
+        if(props instanceof Map){
+            return (Map)props;
+        }
+        return null;
+    }
+    public void ping() throws IOException{
+        Response response = restClient.performRequest(new Request("GET", "/"));
+        int code = response.getStatusLine().getStatusCode();
+        int successCode = 200;
+        if(code != successCode){
+            throw new RuntimeException("Ping to ElasticSearch ERROR, response 
code: " + code);
+        }
+    }
+
+    @Override
+    public void close() throws IOException {
+        this.restClient.close();
+    }
+}
diff --git 
a/datasource/metadatamanager/elasticsearch/src/main/java/com/webank/wedatasphere/linkis/metadatamanager/service/ElasticMetaService.java
 
b/datasource/metadatamanager/elasticsearch/src/main/java/com/webank/wedatasphere/linkis/metadatamanager/service/ElasticMetaService.java
new file mode 100644
index 0000000000..8778ba42eb
--- /dev/null
+++ 
b/datasource/metadatamanager/elasticsearch/src/main/java/com/webank/wedatasphere/linkis/metadatamanager/service/ElasticMetaService.java
@@ -0,0 +1,87 @@
+/*
+ * Copyright 2019 WeBank
+ * 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.webank.wedatasphere.linkis.metadatamanager.service;
+
+import com.webank.wedatasphere.linkis.metadatamanager.common.Json;
+import 
com.webank.wedatasphere.linkis.metadatamanager.common.domain.MetaColumnInfo;
+import 
com.webank.wedatasphere.linkis.metadatamanager.common.service.AbstractMetaService;
+import 
com.webank.wedatasphere.linkis.metadatamanager.common.service.MetadataConnection;
+import org.springframework.stereotype.Component;
+
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+/**
+ * @author davidhua
+ * 2020/02/14
+ */
+@Component
+public class ElasticMetaService extends AbstractMetaService<ElasticConnection> 
{
+    @Override
+    public MetadataConnection<ElasticConnection> getConnection(String 
operator, Map<String, Object> params)
+    throws Exception{
+        String[] endPoints = new String[]{};
+        Object urls = params.get(ElasticParamsMapper.PARAM_ES_URLS.getValue());
+        if(!(urls instanceof List)){
+            List<String> urlList = Json.fromJson(String.valueOf(urls), 
List.class, String.class);
+            assert urlList != null;
+            endPoints = urlList.toArray(endPoints);
+        }else{
+            endPoints = ((List<String>)urls).toArray(endPoints);
+        }
+        ElasticConnection conn = new ElasticConnection(endPoints, 
String.valueOf(params.getOrDefault(ElasticParamsMapper.PARAM_ES_USERNAME.getValue(),
 "")),
+                
String.valueOf(params.getOrDefault(ElasticParamsMapper.PARAM_ES_PASSWORD.getValue(),
 "")));
+        return new MetadataConnection<>(conn, false);
+    }
+
+    @Override
+    public List<String> queryDatabases(ElasticConnection connection) {
+        //Get indices
+        try{
+            return connection.getAllIndices();
+        }catch (Exception e){
+            throw new RuntimeException("Fail to get ElasticSearch 
indices(获取索引列表失败)", e);
+        }
+    }
+
+    @Override
+    public List<String> queryTables(ElasticConnection connection, String 
database) {
+        //Get types
+        try{
+            return connection.getTypes(database);
+        }catch (Exception e){
+            throw new RuntimeException("Fail to get ElasticSearch 
types(获取索引类型失败)", e);
+        }
+    }
+
+    @Override
+    public List<MetaColumnInfo> queryColumns(ElasticConnection connection, 
String database, String table) {
+        try {
+            Map<Object, Object> props = connection.getProps(database, table);
+            return props.entrySet().stream().map(entry -> {
+                MetaColumnInfo info = new MetaColumnInfo();
+                info.setName(String.valueOf(entry.getKey()));
+                Object value = entry.getValue();
+                if(value instanceof Map){
+                    info.setType(String.valueOf(((Map)value)
+                            .getOrDefault(ElasticConnection.DEFAULT_TYPE_NAME, 
"")));
+                }
+                return info;
+            }).collect(Collectors.toList());
+        } catch (Exception e) {
+            throw new RuntimeException("Fail to get ElasticSearch 
columns(获取索引字段失败)", e);
+        }
+    }
+}
diff --git 
a/datasource/metadatamanager/elasticsearch/src/main/java/com/webank/wedatasphere/linkis/metadatamanager/service/ElasticParamsMapper.java
 
b/datasource/metadatamanager/elasticsearch/src/main/java/com/webank/wedatasphere/linkis/metadatamanager/service/ElasticParamsMapper.java
new file mode 100644
index 0000000000..3af7e8ad86
--- /dev/null
+++ 
b/datasource/metadatamanager/elasticsearch/src/main/java/com/webank/wedatasphere/linkis/metadatamanager/service/ElasticParamsMapper.java
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2019 WeBank
+ * 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.webank.wedatasphere.linkis.metadatamanager.service;
+
+import com.webank.wedatasphere.linkis.common.conf.CommonVars;
+
+/**
+ * Configuration
+ * @author davidhua
+ * 2020/02/14
+ */
+public class ElasticParamsMapper {
+    public static final CommonVars<String> PARAM_ES_URLS =
+            CommonVars.apply("wds.linkis.server.mdm.service.es.urls", 
"elasticUrls");
+
+    public static final CommonVars<String> PARAM_ES_USERNAME =
+            CommonVars.apply("wds.linkis.server.mdm.service.es.username", 
"username");
+
+    public static final CommonVars<String> PARAM_ES_PASSWORD =
+            CommonVars.apply("wds.linkis.server.mdm.service.es.password", 
"password");
+}
diff --git 
a/datasource/metadatamanager/elasticsearch/src/main/resources/application.yml 
b/datasource/metadatamanager/elasticsearch/src/main/resources/application.yml
new file mode 100644
index 0000000000..8b3f9ce44a
--- /dev/null
+++ 
b/datasource/metadatamanager/elasticsearch/src/main/resources/application.yml
@@ -0,0 +1,23 @@
+server:
+  port: 8295
+spring:
+  application:
+    name: mdm-service-elasticsearch
+
+eureka:
+  client:
+    serviceUrl:
+      defaultZone: http://${ip}:${port}/eureka/
+  instance:
+    metadata-map:
+      test: wedatasphere
+
+management:
+  endpoints:
+    web:
+      exposure:
+        include: refresh,info
+logging:
+  config: classpath:log4j2.xml
+
+
diff --git 
a/datasource/metadatamanager/elasticsearch/src/main/resources/linkis.properties 
b/datasource/metadatamanager/elasticsearch/src/main/resources/linkis.properties
new file mode 100644
index 0000000000..f83c10d281
--- /dev/null
+++ 
b/datasource/metadatamanager/elasticsearch/src/main/resources/linkis.properties
@@ -0,0 +1,21 @@
+#
+# Copyright 2019 WeBank
+# 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.
+#
+
+wds.linkis.server.mybatis.mapperLocations=
+wds.linkis.server.mybatis.typeAliasesPackage=
+wds.linkis.server.mybatis.BasePackage=
+wds.linkis.server.restful.scan.packages=
+
+#sit
+wds.linkis.server.version=v1
+
diff --git 
a/datasource/metadatamanager/elasticsearch/src/main/resources/log4j.properties 
b/datasource/metadatamanager/elasticsearch/src/main/resources/log4j.properties
new file mode 100644
index 0000000000..d5ee44b86b
--- /dev/null
+++ 
b/datasource/metadatamanager/elasticsearch/src/main/resources/log4j.properties
@@ -0,0 +1,33 @@
+#
+# Copyright 2019 WeBank
+# 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.
+#
+
+### set log levels ###
+
+log4j.rootCategory=INFO,console
+
+log4j.appender.console=org.apache.log4j.ConsoleAppender
+log4j.appender.console.Threshold=INFO
+log4j.appender.console.layout=org.apache.log4j.PatternLayout
+#log4j.appender.console.layout.ConversionPattern= %d{ISO8601} %-5p (%t) 
[%F:%M(%L)] - %m%n
+log4j.appender.console.layout.ConversionPattern= %d{ISO8601} %-5p (%t) %p 
%c{1} - %m%n
+
+
+log4j.appender.com.webank.bdp.ide.core=org.apache.log4j.DailyRollingFileAppender
+log4j.appender.com.webank.bdp.ide.core.Threshold=INFO
+log4j.additivity.com.webank.bdp.ide.core=false
+log4j.appender.com.webank.bdp.ide.core.layout=org.apache.log4j.PatternLayout
+log4j.appender.com.webank.bdp.ide.core.Append=true
+log4j.appender.com.webank.bdp.ide.core.File=logs/linkis.log
+log4j.appender.com.webank.bdp.ide.core.layout.ConversionPattern= %d{ISO8601} 
%-5p (%t) [%F:%M(%L)] - %m%n
+
+log4j.logger.org.springframework=INFO
\ No newline at end of file
diff --git 
a/datasource/metadatamanager/elasticsearch/src/main/resources/log4j2.xml 
b/datasource/metadatamanager/elasticsearch/src/main/resources/log4j2.xml
new file mode 100644
index 0000000000..1c68190669
--- /dev/null
+++ b/datasource/metadatamanager/elasticsearch/src/main/resources/log4j2.xml
@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Copyright 2019 WeBank
+  ~ 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.
+  -->
+
+<configuration status="error" monitorInterval="30">
+    <appenders>
+        <Console name="Console" target="SYSTEM_OUT">
+            <ThresholdFilter level="INFO" onMatch="ACCEPT" onMismatch="DENY"/>
+            <PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level [%t] 
%logger{36} %L %M - %msg%xEx%n"/>
+        </Console>
+        <RollingFile name="RollingFile" fileName="logs/linkis.log"
+                     
filePattern="logs/$${date:yyyy-MM}/linkis-log-%d{yyyy-MM-dd}-%i.log">
+            <PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%-5level] 
[%-40t] %c{1.} (%L) [%M] - %msg%xEx%n"/>
+            <SizeBasedTriggeringPolicy size="100MB"/>
+            <DefaultRolloverStrategy max="20"/>
+        </RollingFile>
+    </appenders>
+    <loggers>
+        <root level="INFO">
+            <appender-ref ref="RollingFile"/>
+            <appender-ref ref="Console"/>
+        </root>
+    </loggers>
+</configuration>
+
diff --git 
a/datasource/metadatamanager/elasticsearch/src/main/scala/com/webank/wedatasphere/linkis/metadatamanager/service/receiver/ElasticReceiver.scala
 
b/datasource/metadatamanager/elasticsearch/src/main/scala/com/webank/wedatasphere/linkis/metadatamanager/service/receiver/ElasticReceiver.scala
new file mode 100644
index 0000000000..dd3049f1de
--- /dev/null
+++ 
b/datasource/metadatamanager/elasticsearch/src/main/scala/com/webank/wedatasphere/linkis/metadatamanager/service/receiver/ElasticReceiver.scala
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2019 WeBank
+ * 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.webank.wedatasphere.linkis.metadatamanager.service.receiver
+
+import com.webank.wedatasphere.linkis.DataWorkCloudApplication
+import 
com.webank.wedatasphere.linkis.metadatamanager.common.service.MetadataService
+import 
com.webank.wedatasphere.linkis.metadatamanager.common.receiver.BaseMetaReceiver
+import 
com.webank.wedatasphere.linkis.metadatamanager.common.service.MetadataService
+import javax.annotation.PostConstruct
+import org.springframework.stereotype.Component
+
+@Component
+class ElasticReceiver extends BaseMetaReceiver{
+  @PostConstruct
+  def init(): Unit = {
+    metadataService = 
DataWorkCloudApplication.getApplicationContext.getBean(classOf[MetadataService])
+  }
+}


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