| /* |
| * 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.storm.scheduler.resource.normalization; |
| |
| import java.util.Map; |
| import org.apache.storm.Constants; |
| import org.apache.storm.generated.WorkerResources; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * An offer of resources with normalized resource names. |
| */ |
| public class NormalizedResourceOffer implements NormalizedResourcesWithMemory { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(NormalizedResourceOffer.class); |
| private final NormalizedResources normalizedResources; |
| private double totalMemoryMb; |
| |
| /** |
| * Create a new normalized resource offer. |
| * |
| * @param resources the resources to be normalized. |
| */ |
| public NormalizedResourceOffer(Map<String, ? extends Number> resources) { |
| Map<String, Double> normalizedResourceMap = NormalizedResources.RESOURCE_NAME_NORMALIZER.normalizedResourceMap(resources); |
| totalMemoryMb = normalizedResourceMap.getOrDefault(Constants.COMMON_TOTAL_MEMORY_RESOURCE_NAME, 0.0); |
| this.normalizedResources = new NormalizedResources(normalizedResourceMap); |
| } |
| |
| /** |
| * Create an offer with all resources set to 0. |
| */ |
| public NormalizedResourceOffer() { |
| normalizedResources = new NormalizedResources(); |
| totalMemoryMb = 0.0; |
| } |
| |
| /** |
| * Copy Constructor. |
| * @param other what to copy. |
| */ |
| public NormalizedResourceOffer(NormalizedResourceOffer other) { |
| this.totalMemoryMb = other.totalMemoryMb; |
| this.normalizedResources = new NormalizedResources(other.normalizedResources); |
| } |
| |
| @Override |
| public double getTotalMemoryMb() { |
| return totalMemoryMb; |
| } |
| |
| /** |
| * Return these resources as a normalized map. |
| * @return the normalized map. |
| */ |
| public Map<String, Double> toNormalizedMap() { |
| Map<String, Double> ret = normalizedResources.toNormalizedMap(); |
| ret.put(Constants.COMMON_TOTAL_MEMORY_RESOURCE_NAME, totalMemoryMb); |
| return ret; |
| } |
| |
| public void add(NormalizedResourcesWithMemory other) { |
| normalizedResources.add(other.getNormalizedResources()); |
| totalMemoryMb += other.getTotalMemoryMb(); |
| } |
| |
| /** |
| * Remove the resources in other from this. |
| * @param other the resources to be removed. |
| * @param resourceMetrics The resource related metrics |
| * @return true if one or more resources in other were larger than available resources in this, else false. |
| */ |
| public boolean remove(NormalizedResourcesWithMemory other, ResourceMetrics resourceMetrics) { |
| boolean negativeResources = normalizedResources.remove(other.getNormalizedResources(), resourceMetrics); |
| totalMemoryMb -= other.getTotalMemoryMb(); |
| if (totalMemoryMb < 0.0) { |
| negativeResources = true; |
| if (resourceMetrics != null) { |
| resourceMetrics.getNegativeResourceEventsMeter().mark(); |
| } |
| totalMemoryMb = 0.0; |
| } |
| return negativeResources; |
| } |
| |
| public boolean remove(NormalizedResourcesWithMemory other) { |
| return remove(other, null); |
| } |
| |
| /** |
| * Remove the resources in other from this. |
| * @param other the resources to be removed. |
| * @param resourceMetrics The resource related metrics |
| * @return true if one or more resources in other were larger than available resources in this, else false. |
| */ |
| public boolean remove(WorkerResources other, ResourceMetrics resourceMetrics) { |
| boolean negativeResources = normalizedResources.remove(other); |
| totalMemoryMb -= (other.get_mem_off_heap() + other.get_mem_on_heap()); |
| if (totalMemoryMb < 0.0) { |
| negativeResources = true; |
| resourceMetrics.getNegativeResourceEventsMeter().mark(); |
| totalMemoryMb = 0.0; |
| } |
| return negativeResources; |
| } |
| |
| /** |
| * Calculate the average percentage used. |
| * @see NormalizedResources#calculateAveragePercentageUsedBy(org.apache.storm.scheduler.resource.normalization.NormalizedResources, |
| * double, double) |
| */ |
| public double calculateAveragePercentageUsedBy(NormalizedResourceOffer used) { |
| return normalizedResources.calculateAveragePercentageUsedBy( |
| used.getNormalizedResources(), getTotalMemoryMb(), used.getTotalMemoryMb()); |
| } |
| |
| /** |
| * Calculate the min percentage used of the resource. |
| * @see NormalizedResources#calculateMinPercentageUsedBy(org.apache.storm.scheduler.resource.normalization.NormalizedResources, double, |
| * double) |
| */ |
| public double calculateMinPercentageUsedBy(NormalizedResourceOffer used) { |
| return normalizedResources.calculateMinPercentageUsedBy(used.getNormalizedResources(), getTotalMemoryMb(), used.getTotalMemoryMb()); |
| } |
| |
| /** |
| * Check if resources might be able to fit. |
| * @see NormalizedResources#couldHoldIgnoringSharedMemory(org.apache.storm.scheduler.resource.normalization.NormalizedResources, double, |
| * double) |
| */ |
| public boolean couldHoldIgnoringSharedMemory(NormalizedResourcesWithMemory other) { |
| return normalizedResources.couldHoldIgnoringSharedMemory( |
| other.getNormalizedResources(), getTotalMemoryMb(), other.getTotalMemoryMb()); |
| } |
| |
| public boolean couldHoldIgnoringSharedMemoryAndCpu(NormalizedResourcesWithMemory other) { |
| return normalizedResources.couldHoldIgnoringSharedMemoryAndCpu( |
| other.getNormalizedResources(), getTotalMemoryMb(), other.getTotalMemoryMb()); |
| } |
| |
| public double getTotalCpu() { |
| return normalizedResources.getTotalCpu(); |
| } |
| |
| @Override |
| public NormalizedResources getNormalizedResources() { |
| return normalizedResources; |
| } |
| |
| @Override |
| public String toString() { |
| return "Normalized resources: " + toNormalizedMap(); |
| } |
| |
| /** |
| * If a node or rack has a kind of resource not in a request, make that resource negative so when sorting that node or rack will |
| * be less likely to be selected. |
| * @param requestedResources the requested resources. |
| */ |
| public void updateForRareResourceAffinity(NormalizedResourceRequest requestedResources) { |
| normalizedResources.updateForRareResourceAffinity(requestedResources.getNormalizedResources()); |
| } |
| |
| @Override |
| public void clear() { |
| this.totalMemoryMb = 0.0; |
| this.normalizedResources.clear(); |
| } |
| |
| @Override |
| public boolean areAnyOverZero() { |
| return totalMemoryMb > 0 || normalizedResources.areAnyOverZero(); |
| } |
| |
| /** |
| * Is there any possibility that a resource request could ever fit on this. |
| * @param minWorkerCpu the configured minimum worker CPU |
| * @param requestedResources the requested resources |
| * @return true if there is the possibility it might fit, no guarantee that it will, or false if there is no |
| * way it would ever fit. |
| */ |
| public boolean couldFit(double minWorkerCpu, NormalizedResourceRequest requestedResources) { |
| if (minWorkerCpu < 0.001) { |
| return this.couldHoldIgnoringSharedMemory(requestedResources); |
| } else { |
| // Assume that there could be a worker already on the node that is under the minWorkerCpu budget. |
| // It's possible we could combine with it. Let's disregard minWorkerCpu from the request |
| // and validate that CPU as a rough fit. |
| double requestedCpu = Math.max(requestedResources.getTotalCpu() - minWorkerCpu, 0.0); |
| if (requestedCpu > this.getTotalCpu()) { |
| return false; |
| } |
| // now check memory only |
| return this.couldHoldIgnoringSharedMemoryAndCpu(requestedResources); |
| } |
| } |
| } |