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 * Contributors: 017 * bdelbosc 018 */ 019package org.nuxeo.lib.stream.computation; 020 021import java.util.HashMap; 022import java.util.Map; 023 024/** 025 * Settings defines stream's partitions and computation's concurrency. 026 * 027 * @since 9.3 028 */ 029public class Settings { 030 protected final int defaultConcurrency; 031 032 protected final int defaultPartitions; 033 034 protected final Map<String, Integer> concurrencies = new HashMap<>(); 035 036 protected final Map<String, Integer> partitions = new HashMap<>(); 037 038 /** 039 * Default concurrency and partition to use if not specified explicitly 040 */ 041 public Settings(int defaultConcurrency, int defaultPartitions) { 042 this.defaultConcurrency = defaultConcurrency; 043 this.defaultPartitions = defaultPartitions; 044 } 045 046 /** 047 * Set the computation thread pool size. 048 */ 049 public Settings setConcurrency(String computationName, int concurrency) { 050 concurrencies.put(computationName, concurrency); 051 return this; 052 } 053 054 public int getConcurrency(String computationName) { 055 return concurrencies.getOrDefault(computationName, defaultConcurrency); 056 } 057 058 /** 059 * Set the number of partitions for a stream. 060 */ 061 public Settings setPartitions(String streamName, int partitions) { 062 this.partitions.put(streamName, partitions); 063 return this; 064 } 065 066 public int getPartitions(String streamName) { 067 return partitions.getOrDefault(streamName, defaultPartitions); 068 } 069 070}