Linkis 提供了方便的JAVA和SCALA调用的接口,只需要引入ujes-client的模块就可以进行使用
1. 引入依赖模块
<dependency>
<groupId>com.webank.wedatasphere.Linkis</groupId>
<artifactId>Linkis-ujes-client</artifactId>
<version>0.6.0</version>
</dependency>
2. 建立测试类
建立Java的测试类UJESClientImplTestJ,具体接口含义可以见注释:
package com.webank.bdp.dataworkcloud.ujes.client;
import com.webank.wedatasphere.Linkis.common.utils.Utils;
import com.webank.wedatasphere.Linkis.httpclient.dws.authentication.StaticAuthenticationStrategy;
import com.webank.wedatasphere.Linkis.httpclient.dws.config.DWSClientConfig;
import com.webank.wedatasphere.Linkis.httpclient.dws.config.DWSClientConfigBuilder;
import com.webank.wedatasphere.Linkis.ujes.client.UJESClient;
import com.webank.wedatasphere.Linkis.ujes.client.UJESClientImpl;
import com.webank.wedatasphere.Linkis.ujes.client.request.JobExecuteAction;
import com.webank.wedatasphere.Linkis.ujes.client.request.ResultSetAction;
import com.webank.wedatasphere.Linkis.ujes.client.response.JobExecuteResult;
import com.webank.wedatasphere.Linkis.ujes.client.response.JobInfoResult;
import com.webank.wedatasphere.Linkis.ujes.client.response.JobProgressResult;
import com.webank.wedatasphere.Linkis.ujes.client.response.JobStatusResult;
import org.apache.commons.io.IOUtils;
import java.util.concurrent.TimeUnit;
public class UJESClientImplTestJ{
public static void main(String[] args){
// 1. 配置DWSClientBuilder,通过DWSClientBuilder获取一个DWSClientConfig
DWSClientConfig clientConfig = ((DWSClientConfigBuilder) (DWSClientConfigBuilder.newBuilder()
.addUJESServerUrl("http://${ip}:${port}") //指定ServerUrl,Linkis服务器端网关的地址,如http://{ip}:{port}
.connectionTimeout(30000) //connectionTimeOut 客户端连接超时时间
.discoveryEnabled(true).discoveryFrequency(1, TimeUnit.MINUTES) //是否启用注册发现,如果启用,会自动发现新启动的Gateway
.loadbalancerEnabled(true) // 是否启用负载均衡,如果不启用注册发现,则负载均衡没有意义
.maxConnectionSize(5) //指定最大连接数,即最大并发数
.retryEnabled(false).readTimeout(30000) //执行失败,是否允许重试
.setAuthenticationStrategy(new StaticAuthenticationStrategy()) //AuthenticationStrategy Linkis认证方式
.setAuthTokenKey("${username}").setAuthTokenValue("${password}"))) //认证key,一般为用户名; 认证value,一般为用户名对应的密码
.setDWSVersion("v1").build(); //Linkis后台协议的版本,当前版本为v1
// 2. 通过DWSClientConfig获取一个UJESClient
UJESClient client = new UJESClientImpl(clientConfig);
// 3. 开始执行代码
JobExecuteResult jobExecuteResult = client.execute(JobExecuteAction.builder()
.setCreator("LinkisClient-Test") //creator,请求Linkis的客户端的系统名,用于做系统级隔离
.addExecuteCode("show tables") //ExecutionCode 请求执行的代码
.setEngineType(JobExecuteAction.EngineType$.MODULE$.HIVE()) // 希望请求的Linkis的执行引擎类型,如Spark hive等
.setUser("johnnwang") //User,请求用户;用于做用户级多租户隔离
.build());
System.out.println("execId: " + jobExecuteResult.getExecID() + ", taskId: " + jobExecuteResult.taskID());
// 4. 获取脚本的执行状态
JobStatusResult status = client.status(jobExecuteResult);
while(!status.isCompleted()) {
// 5. 获取脚本的执行进度
JobProgressResult progress = client.progress(jobExecuteResult);
Utils.sleepQuietly(500);
status = client.status(jobExecuteResult);
}
// 6. 获取脚本的Job信息
JobInfoResult jobInfo = client.getJobInfo(jobExecuteResult);
// 7. 获取结果集列表(如果用户一次提交多个SQL,会产生多个结果集)
String resultSet = jobInfo.getResultSetList(client)[0];
// 8. 通过一个结果集信息,获取具体的结果集
Object fileContents = client.resultSet(ResultSetAction.builder().setPath(resultSet).setUser(jobExecuteResult.getUser()).build()).getFileContent();
System.out.println("fileContents: " + fileContents);
IOUtils.closeQuietly(client);
}
}
运行上述的代码即可以和Linkis进行交互
3. Scala测试代码:
import java.util.concurrent.TimeUnit
import com.webank.wedatasphere.Linkis.common.utils.Utils
import com.webank.wedatasphere.Linkis.httpclient.dws.authentication.StaticAuthenticationStrategy
import com.webank.wedatasphere.Linkis.httpclient.dws.config.DWSClientConfigBuilder
import com.webank.wedatasphere.Linkis.ujes.client.request.JobExecuteAction.EngineType
import com.webank.wedatasphere.Linkis.ujes.client.request.{JobExecuteAction, ResultSetAction}
import org.apache.commons.io.IOUtils
object UJESClientImplTest extends App {
// 1. 配置DWSClientBuilder,通过DWSClientBuilder获取一个DWSClientConfig
val clientConfig = DWSClientConfigBuilder.newBuilder()
.addUJESServerUrl("http://${ip}:${port}") //指定ServerUrl,Linkis服务器端网关的地址,如http://{ip}:{port}
.connectionTimeout(30000) //connectionTimeOut 客户端连接超时时间
.discoveryEnabled(true).discoveryFrequency(1, TimeUnit.MINUTES) //是否启用注册发现,如果启用,会自动发现新启动的Gateway
.loadbalancerEnabled(true) // 是否启用负载均衡,如果不启用注册发现,则负载均衡没有意义
.maxConnectionSize(5) //指定最大连接数,即最大并发数
.retryEnabled(false).readTimeout(30000) //执行失败,是否允许重试
.setAuthenticationStrategy(new StaticAuthenticationStrategy()) //AuthenticationStrategy Linkis认证方式
.setAuthTokenKey("${username}").setAuthTokenValue("${password}") //认证key,一般为用户名; 认证value,一般为用户名对应的密码
.setDWSVersion("v1").build() //Linkis后台协议的版本,当前版本为v1
// 2. 通过DWSClientConfig获取一个UJESClient
val client = UJESClient(clientConfig)
// 3. 开始执行代码
val jobExecuteResult = client.execute(JobExecuteAction.builder()
.setCreator("LinkisClient-Test") //creator,请求Linkis的客户端的系统名,用于做系统级隔离
.addExecuteCode("show tables") //ExecutionCode 请求执行的代码
.setEngineType(EngineType.SPARK) // 希望请求的Linkis的执行引擎类型,如Spark hive等
.setUser("${username}").build()) //User,请求用户;用于做用户级多租户隔离
println("execId: " + jobExecuteResult.getExecID + ", taskId: " + jobExecuteResult.taskID)
// 4. 获取脚本的执行状态
var status = client.status(jobExecuteResult)
while(!status.isCompleted) {
// 5. 获取脚本的执行进度
val progress = client.progress(jobExecuteResult)
val progressInfo = if(progress.getProgressInfo != null) progress.getProgressInfo.toList else List.empty
println("progress: " + progress.getProgress + ", progressInfo: " + progressInfo)
Utils.sleepQuietly(500)
status = client.status(jobExecuteResult)
}
// 6. 获取脚本的Job信息
val jobInfo = client.getJobInfo(jobExecuteResult)
// 7. 获取结果集列表(如果用户一次提交多个SQL,会产生多个结果集)
val resultSet = jobInfo.getResultSetList(client).head
// 8. 通过一个结果集信息,获取具体的结果集
val fileContents = client.resultSet(ResultSetAction.builder().setPath(resultSet).setUser(jobExecuteResult.getUser).build()).getFileContent
println("fileContents: " + fileContents)
IOUtils.closeQuietly(client)
}