001/* 002 * (C) Copyright 2017 Nuxeo SA (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 * 017 * Contributors: 018 * bdelbosc 019 */ 020package org.nuxeo.runtime.stream; 021 022import java.lang.reflect.InvocationTargetException; 023import java.util.ArrayList; 024import java.util.HashMap; 025import java.util.List; 026import java.util.Map; 027 028import org.nuxeo.common.xmap.annotation.XNode; 029import org.nuxeo.common.xmap.annotation.XNodeList; 030import org.nuxeo.common.xmap.annotation.XNodeMap; 031import org.nuxeo.common.xmap.annotation.XObject; 032import org.nuxeo.lib.stream.computation.Settings; 033import org.nuxeo.lib.stream.computation.Topology; 034 035@SuppressWarnings("CanBeFinal") 036@XObject("streamProcessor") 037public class StreamProcessorDescriptor { 038 public static final Integer DEFAULT_CONCURRENCY = 4; 039 040 @XNode("@name") 041 public String name; 042 043 @XNode("@logConfig") 044 public String config; 045 046 @XNode("@class") 047 public Class<? extends StreamProcessorTopology> klass; 048 049 @XNode("@defaultConcurrency") 050 public Integer defaultConcurrency = DEFAULT_CONCURRENCY; 051 052 @XNode("@defaultPartitions") 053 public Integer defaultPartitions = DEFAULT_CONCURRENCY; 054 055 @XNodeMap(value = "option", key = "@name", type = HashMap.class, componentType = String.class) 056 public Map<String, String> options = new HashMap<>(); 057 058 @XNodeList(value = "computation", type = ArrayList.class, componentType = ComputationDescriptor.class) 059 public List<ComputationDescriptor> computations = new ArrayList<>(0); 060 061 @XNodeList(value = "stream", type = ArrayList.class, componentType = StreamDescriptor.class) 062 public List<StreamDescriptor> streams = new ArrayList<>(0); 063 064 public String getName() { 065 return name; 066 } 067 068 public Settings getSettings() { 069 Settings settings = new Settings(defaultConcurrency, defaultPartitions); 070 computations.forEach(comp -> settings.setConcurrency(comp.name, comp.concurrency)); 071 streams.forEach(stream -> settings.setPartitions(stream.name, stream.partitions)); 072 return settings; 073 } 074 075 public Topology getTopology() { 076 try { 077 return klass.getDeclaredConstructor().newInstance().getTopology(options); 078 } catch (InstantiationException | IllegalAccessException | InvocationTargetException 079 | NoSuchMethodException e) { 080 throw new RuntimeException("Can not create topology for processor: " + name, e); 081 } 082 083 } 084 085 @SuppressWarnings("CanBeFinal") 086 @XObject(value = "computation") 087 public static class ComputationDescriptor { 088 @XNode("@name") 089 public String name; 090 091 @XNode("@concurrency") 092 public Integer concurrency = DEFAULT_CONCURRENCY; 093 094 public ComputationDescriptor() { 095 } 096 } 097 098 @SuppressWarnings("CanBeFinal") 099 @XObject(value = "stream") 100 public static class StreamDescriptor { 101 102 @XNode("@name") 103 public String name; 104 105 @XNode("@partitions") 106 public Integer partitions = DEFAULT_CONCURRENCY; 107 108 public StreamDescriptor() { 109 } 110 } 111}