YARN-6626. Embed REST API service into RM. Contributed by Eric Yang
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Jian He
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8851209788
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@ -336,6 +336,8 @@ public class YarnConfiguration extends Configuration {
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public static final String YARN_WEBAPP_UI2_WARFILE_PATH = "yarn."
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+ "webapp.ui2.war-file-path";
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public static final String YARN_API_SERVICES_ENABLE = "yarn."
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+ "webapp.api-service.enable";
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public static final String RM_RESOURCE_TRACKER_ADDRESS =
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RM_PREFIX + "resource-tracker.address";
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@ -17,6 +17,7 @@
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package org.apache.hadoop.yarn.service.webapp;
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import com.google.inject.Inject;
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import com.google.inject.Singleton;
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import org.apache.hadoop.conf.Configuration;
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import org.apache.hadoop.util.VersionInfo;
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@ -57,6 +58,12 @@ import static org.apache.hadoop.yarn.service.conf.RestApiConstants.*;
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@Singleton
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@Path(CONTEXT_ROOT)
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public class ApiServer {
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@Inject
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public ApiServer(Configuration conf) {
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super();
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}
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private static final Logger LOG =
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LoggerFactory.getLogger(ApiServer.class);
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private static Configuration YARN_CONFIG = new YarnConfiguration();
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@ -244,12 +244,6 @@
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.apache.hadoop</groupId>
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<artifactId>hadoop-yarn-server-resourcemanager</artifactId>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.apache.curator</groupId>
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<artifactId>curator-test</artifactId>
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@ -23,6 +23,9 @@ import io.swagger.annotations.ApiModelProperty;
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import java.io.Serializable;
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import java.util.Objects;
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import javax.xml.bind.annotation.XmlEnum;
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import javax.xml.bind.annotation.XmlType;
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import com.fasterxml.jackson.annotation.JsonInclude;
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import com.fasterxml.jackson.annotation.JsonProperty;
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import com.fasterxml.jackson.annotation.JsonValue;
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@ -42,6 +45,11 @@ public class Artifact implements Serializable {
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private String id = null;
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/**
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* Artifact Type. DOCKER, TARBALL or SERVICE
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**/
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@XmlType(name = "artifact_type")
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@XmlEnum
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public enum TypeEnum {
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DOCKER("DOCKER"), TARBALL("TARBALL"), SERVICE("SERVICE");
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@ -26,7 +26,10 @@ import org.apache.hadoop.classification.InterfaceAudience;
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import org.apache.hadoop.classification.InterfaceStability;
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import javax.xml.bind.annotation.XmlElement;
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import javax.xml.bind.annotation.XmlEnum;
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import javax.xml.bind.annotation.XmlRootElement;
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import javax.xml.bind.annotation.XmlType;
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import java.io.Serializable;
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import java.util.HashMap;
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import java.util.Map;
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@ -45,6 +48,11 @@ import java.util.Objects;
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public class ConfigFile implements Serializable {
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private static final long serialVersionUID = -7009402089417704612L;
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/**
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* Config Type. XML, JSON, YAML, TEMPLATE, ENV and HADOOP_XML are supported.
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**/
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@XmlType(name = "config_type")
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@XmlEnum
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public enum TypeEnum {
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XML("XML"), PROPERTIES("PROPERTIES"), JSON("JSON"), YAML("YAML"), TEMPLATE(
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"TEMPLATE"), ENV("ENV"), HADOOP_XML("HADOOP_XML"),;
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@ -25,6 +25,9 @@ import java.util.HashMap;
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import java.util.Map;
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import java.util.Objects;
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import javax.xml.bind.annotation.XmlEnum;
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import javax.xml.bind.annotation.XmlType;
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import com.fasterxml.jackson.annotation.JsonProperty;
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import com.fasterxml.jackson.annotation.JsonValue;
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import org.apache.hadoop.classification.InterfaceAudience;
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@ -43,6 +46,11 @@ import org.apache.hadoop.classification.InterfaceStability;
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public class ReadinessCheck implements Serializable {
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private static final long serialVersionUID = -3836839816887186801L;
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/**
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* Type. HTTP and PORT
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**/
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@XmlType(name = "type")
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@XmlEnum
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public enum TypeEnum {
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HTTP("HTTP"),
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PORT("PORT");
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@ -211,6 +211,14 @@
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<value></value>
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</property>
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<property>
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<description>
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Enable services rest api on ResourceManager.
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</description>
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<name>yarn.webapp.api-service.enable</name>
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<value>false</value>
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</property>
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<property>
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<name>yarn.resourcemanager.resource-tracker.address</name>
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<value>${yarn.resourcemanager.hostname}:8031</value>
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@ -22,6 +22,8 @@ import static org.apache.hadoop.yarn.util.StringHelper.pajoin;
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import java.net.InetSocketAddress;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.apache.hadoop.ha.HAServiceProtocol.HAServiceState;
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import org.apache.hadoop.yarn.conf.YarnConfiguration;
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import org.apache.hadoop.yarn.util.RMHAUtils;
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@ -38,8 +40,12 @@ import com.sun.jersey.guice.spi.container.servlet.GuiceContainer;
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*/
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public class RMWebApp extends WebApp implements YarnWebParams {
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private static final Log LOG =
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LogFactory.getLog(RMWebApp.class.getName());
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private final ResourceManager rm;
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private boolean standby = false;
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private final static String APISERVER =
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"org.apache.hadoop.yarn.service.webapp.ApiServer";
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public RMWebApp(ResourceManager rm) {
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this.rm = rm;
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@ -53,6 +59,19 @@ public class RMWebApp extends WebApp implements YarnWebParams {
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bind(RMWebApp.class).toInstance(this);
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if (rm != null) {
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boolean enableServiceApi = rm.getConfig()
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.getBoolean(YarnConfiguration.YARN_API_SERVICES_ENABLE, false);
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if (enableServiceApi) {
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try {
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// Use reflection here to load ApiServer class,
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// this is done to avoid creating cyclic dependency
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// between maven projects.
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Class<?> apiServer = Class.forName(APISERVER);
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bind(apiServer);
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} catch (ClassNotFoundException e) {
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LOG.warn("ApiServer REST API is not activated.");
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}
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}
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bind(ResourceManager.class).toInstance(rm);
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}
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route("/", RmController.class);
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@ -101,17 +101,41 @@ yarn service destroy ${SERVICE_NAME}
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```
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## Manage services on YARN via REST API
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Below steps walk you through deploying services on YARN via REST API.
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Refer to [API doc](YarnServiceAPI.md) for the detailed API specificatiosn.
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### Start API-Server for deploying services on YARN
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API server is the service that sits in front of YARN ResourceManager and lets users submit their API specs via HTTP.
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YARN API Server REST API can be activated in two modes: embedded or standalone.
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### Start Embedded API-Server as part of ResourceManager
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For running inside ResourceManager, add this property to `yarn-site.xml` and restart ResourceManager.
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```
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<property>
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<description>
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Enable services rest api on ResourceManager.
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</description>
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<name>yarn.webapp.api-service.enable</name>
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<value>true</value>
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</property>
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```
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Services can be deployed on YARN through the ResourceManager web endpoint.
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### Start Standalone API-Server for deploying services on YARN
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API server is the service that sits in front of YARN ResourceManager and lets users submit their service specs via HTTP.
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```
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yarn --daemon start apiserver
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```
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The above command starts the API Server on the localhost at port 9191 by default.
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Refer to [API doc](YarnServiceAPI.md) for the detailed API specificatiosn.
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### Deploy a service
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POST the aforementioned example service definition to the api-server endpoint:
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POST the aforementioned example service definition to the ResourceManager api-server endpoint:
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```
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POST http://localhost:8088/ws/v1/services
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```
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Or standalone API server:
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```
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POST http://localhost:9191/ws/v1/services
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```
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