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[WIP] [POC] YARN UI3 POC #8330

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[WIP] [POC] YARN UI3 POC #8330

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2 changes: 2 additions & 0 deletions ...emanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/RMWebApp.java
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,7 @@
import org.apache.hadoop.ha.HAServiceProtocol.HAServiceState;
import org.apache.hadoop.yarn.conf.YarnConfiguration;
import org.apache.hadoop.yarn.server.resourcemanager.webapp.jsonprovider.JsonProviderFeature;
import org.apache.hadoop.yarn.server.resourcemanager.webapp.ui3.RMUI3Services;
import org.apache.hadoop.yarn.util.RMHAUtils;
import org.apache.hadoop.yarn.server.resourcemanager.RMContext;
import org.apache.hadoop.yarn.server.resourcemanager.ResourceManager;
Expand Down Expand Up @@ -63,6 +64,7 @@ public ResourceConfig resourceConfig(Configuration config) {
resourceConfig.register(webService);
LOG.debug("Registered webservice class is {}", webService.getName());

resourceConfig.register(RMUI3Services.class);
resourceConfig.register(GenericExceptionHandler.class);
resourceConfig.register(JsonProviderFeature.class);
resourceConfig.register(JAXBContextResolver.class);
Expand Down
63 changes: 63 additions & 0 deletions ...src/main/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/ui3/RMUI3Services.java
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Original file line number Diff line number Diff line change
@@ -0,0 +1,63 @@
package org.apache.hadoop.yarn.server.resourcemanager.webapp.ui3;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;
import java.util.stream.Collectors;
import javax.inject.Inject;
import javax.inject.Singleton;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;

import org.apache.hadoop.yarn.server.resourcemanager.ResourceManager;
import org.apache.hadoop.yarn.server.resourcemanager.webapp.dao.ClusterInfo;

@Singleton
@Path("/ui3")
public class RMUI3Services {

private final ResourceManager rm;

@Inject
public RMUI3Services(ResourceManager rm) {
this.rm = rm;
}

@GET
@Produces("text/css")
@Path("css")
public Response css() {
try (
InputStream inputStream = RMUI3Services.class.getClassLoader().getResourceAsStream("bulma.min.css");
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, StandardCharsets.UTF_8))
) {
String css = reader.lines().collect(Collectors.joining("\n"));
return Response.ok(css)
.header("Cache-Control", "max-age=86400, public") // 1 day
.header("Pragma", "public")
.build();
} catch (Exception e) {
throw new RuntimeException("Failed to load CSS", e);
}
}

@GET
@Produces(MediaType.TEXT_HTML)
public String get() {
return String.format("""
<!DOCTYPE html>
<html>
<head>
<title>UI3-POC</title>
<link rel="stylesheet" href="ui3/css">
</head>
<body>
<h1 class="title">Hello, Hadoop %s!</h1>
</body>
</html>""", new ClusterInfo(rm).getHadoopVersionBuiltOn());
}
}
3 changes: 3 additions & 0 deletions ...rn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/resources/bulma.min.css
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