| /* |
| * 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.pulsar.functions.worker; |
| |
| import java.io.IOException; |
| import java.util.Map; |
| import org.apache.pulsar.common.util.SimpleTextOutputStream; |
| import org.apache.pulsar.functions.runtime.Runtime; |
| import org.apache.pulsar.functions.runtime.RuntimeSpawner; |
| import org.apache.pulsar.functions.runtime.kubernetes.KubernetesRuntimeFactory; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * A class to generate stats for pulsar functions running on this broker. |
| */ |
| public class FunctionsStatsGenerator { |
| |
| private static final Logger log = LoggerFactory.getLogger(FunctionsStatsGenerator.class); |
| |
| public static void generate(PulsarWorkerService workerService, SimpleTextOutputStream out) { |
| // only when worker service is initialized, we generate the stats. otherwise we will get bunch of NPE. |
| if (workerService != null && workerService.isInitialized()) { |
| |
| /* worker internal stats */ |
| |
| try { |
| out.write(workerService.getWorkerStatsManager().getStatsAsString()); |
| } catch (IOException e) { |
| log.warn("Encountered error when generating metrics for worker {}", |
| workerService.getWorkerConfig().getWorkerId(), e); |
| } |
| |
| /* function stats */ |
| |
| // kubernetes runtime factory doesn't support stats collection through worker service |
| if (workerService.getFunctionRuntimeManager().getRuntimeFactory() instanceof KubernetesRuntimeFactory) { |
| return; |
| } |
| |
| Map<String, FunctionRuntimeInfo> functionRuntimes = |
| workerService.getFunctionRuntimeManager().getFunctionRuntimeInfos(); |
| |
| for (Map.Entry<String, FunctionRuntimeInfo> entry : functionRuntimes.entrySet()) { |
| String fullyQualifiedInstanceName = entry.getKey(); |
| FunctionRuntimeInfo functionRuntimeInfo = entry.getValue(); |
| RuntimeSpawner functionRuntimeSpawner = functionRuntimeInfo.getRuntimeSpawner(); |
| |
| if (functionRuntimeSpawner != null) { |
| Runtime functionRuntime = functionRuntimeSpawner.getRuntime(); |
| if (functionRuntime != null) { |
| try { |
| |
| String prometheusMetrics = functionRuntime.getPrometheusMetrics(); |
| if (prometheusMetrics != null) { |
| out.write(prometheusMetrics); |
| } |
| |
| } catch (IOException e) { |
| log.warn("Failed to collect metrics for function instance {}", |
| fullyQualifiedInstanceName, e); |
| } |
| } |
| } |
| } |
| } |
| } |
| } |