diff options
Diffstat (limited to 'core/src/main/scala/org/apache/spark/metrics/sink/MetricsServlet.scala')
-rw-r--r-- | core/src/main/scala/org/apache/spark/metrics/sink/MetricsServlet.scala | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/core/src/main/scala/org/apache/spark/metrics/sink/MetricsServlet.scala b/core/src/main/scala/org/apache/spark/metrics/sink/MetricsServlet.scala new file mode 100644 index 0000000000..4e90dd4323 --- /dev/null +++ b/core/src/main/scala/org/apache/spark/metrics/sink/MetricsServlet.scala @@ -0,0 +1,55 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You 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 org.apache.spark.metrics.sink + +import com.codahale.metrics.MetricRegistry +import com.codahale.metrics.json.MetricsModule + +import com.fasterxml.jackson.databind.ObjectMapper + +import java.util.Properties +import java.util.concurrent.TimeUnit +import javax.servlet.http.HttpServletRequest + +import org.eclipse.jetty.server.Handler + +import org.apache.spark.ui.JettyUtils + +class MetricsServlet(val property: Properties, val registry: MetricRegistry) extends Sink { + val SERVLET_KEY_URI = "uri" + val SERVLET_KEY_SAMPLE = "sample" + + val servletURI = property.getProperty(SERVLET_KEY_URI) + + val servletShowSample = property.getProperty(SERVLET_KEY_SAMPLE).toBoolean + + val mapper = new ObjectMapper().registerModule( + new MetricsModule(TimeUnit.SECONDS, TimeUnit.MILLISECONDS, servletShowSample)) + + def getHandlers = Array[(String, Handler)]( + (servletURI, JettyUtils.createHandler(request => getMetricsSnapshot(request), "text/json")) + ) + + def getMetricsSnapshot(request: HttpServletRequest): String = { + mapper.writeValueAsString(registry) + } + + override def start() { } + + override def stop() { } +} |