001/* 002 * (C) Copyright 2020 Nuxeo (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * bdelbosc 018 */ 019package org.nuxeo.runtime.stream; 020 021import static org.nuxeo.lib.stream.computation.AbstractComputation.INPUT_1; 022import static org.nuxeo.lib.stream.computation.AbstractComputation.INPUT_NULL; 023 024import java.time.Duration; 025import java.util.Arrays; 026import java.util.Collections; 027import java.util.List; 028import java.util.Map; 029import java.util.stream.Collectors; 030 031import org.nuxeo.lib.stream.computation.Topology; 032import org.nuxeo.runtime.api.Framework; 033import org.nuxeo.runtime.services.config.ConfigurationService; 034 035/** 036 * A processor fetching stream metrics populating Dropwizard metrics. 037 * 038 * @since 11.1 039 */ 040public class StreamMetricsProcessor implements StreamProcessorTopology { 041 042 protected static final Duration DEFAULT_INTERVAL = Duration.ofMinutes(1); 043 044 protected static final String STREAM_METRICS_FETCH_INTERVAL = "metrics.streams.interval"; 045 046 protected static final String STREAM_METRICS_LIST = "metrics.streams.list"; 047 048 @Override 049 public Topology getTopology(Map<String, String> options) { 050 ConfigurationService confService = Framework.getService(ConfigurationService.class); 051 Duration interval = confService.getDuration(STREAM_METRICS_FETCH_INTERVAL, DEFAULT_INTERVAL); 052 String streams = confService.getString(STREAM_METRICS_LIST, null); 053 List<String> inputStreams = parseInputStreams(streams); 054 return Topology.builder() 055 .addComputation(() -> new StreamMetricsComputation(interval, inputStreams), 056 Collections.singletonList(INPUT_1 + ":" + INPUT_NULL)) 057 .build(); 058 } 059 060 protected List<String> parseInputStreams(String streams) { 061 if (streams == null || streams.isBlank()) { 062 return null; 063 } 064 return Arrays.stream(streams.split(",")).map(String::trim).collect(Collectors.toList()); 065 } 066}