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+/*
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+ * Licensed to the Apache Software Foundation (ASF) under one
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+ * or more contributor license agreements. See the NOTICE file
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+ * distributed with this work for additional information
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+ * regarding copyright ownership. The ASF licenses this file
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+ * to you under the Apache License, Version 2.0 (the
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+ * "License"); you may not use this file except in compliance
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+ * with the License. You may obtain a copy of the License at
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+ * http://www.apache.org/licenses/LICENSE-2.0
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+ * Unless required by applicable law or agreed to in writing, software
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+ * distributed under the License is distributed on an "AS IS" BASIS,
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+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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+ * See the License for the specific language governing permissions and
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+ * limitations under the License.
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+ */
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+
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+package org.apache.hadoop.yarn.util.resource;
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+
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+import com.google.common.collect.Lists;
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+import org.apache.hadoop.conf.Configuration;
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+import org.apache.hadoop.yarn.LocalConfigurationProvider;
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+import org.apache.hadoop.yarn.api.protocolrecords.ResourceTypes;
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+import org.apache.hadoop.yarn.api.records.ResourceInformation;
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+import org.apache.hadoop.yarn.conf.YarnConfiguration;
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+import org.apache.hadoop.yarn.exceptions.YarnException;
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+
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+import java.io.ByteArrayInputStream;
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+import java.io.IOException;
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+import java.io.InputStream;
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+import java.util.HashMap;
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+import java.util.List;
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+import java.util.Map;
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+import java.util.stream.Collectors;
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+import java.util.stream.IntStream;
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+
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+import static java.util.stream.Collectors.toList;
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+
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+/**
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+ * This class can generate an XML configuration file of custom resource types.
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+ * See createInitial ResourceTypes for the default values. All custom resource
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+ * type is prefixed with CUSTOM_RESOURCE_PREFIX. Please use the
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+ * getConfigurationInputStream method to get an InputStream of the XML.
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+ *
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+ */
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+public class CustomResourceTypesConfigurationProvider
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+ extends LocalConfigurationProvider {
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+
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+ @Override
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+ public InputStream getConfigurationInputStream(Configuration bootstrapConf,
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+ String name) throws YarnException, IOException {
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+ if (YarnConfiguration.RESOURCE_TYPES_CONFIGURATION_FILE.equals(name)) {
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+ return new ByteArrayInputStream(
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+ customResourceTypes.getXml().getBytes());
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+ } else {
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+ return super.getConfigurationInputStream(bootstrapConf, name);
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+ }
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+ }
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+
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+ private static final String CUSTOM_RESOURCE_PREFIX = "custom-resource-";
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+ private static final String UNIT_KILO = "k";
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+ private static CustomResourceTypes customResourceTypes =
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+ createCustomResourceTypes(2, UNIT_KILO);
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+
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+ public static void initResourceTypes(Map<String, String> resourcesWithUnits) {
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+ CustomResourceTypesConfigurationProvider.setResourceTypes(
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+ resourcesWithUnits);
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+ initResourceTypesInternal();
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+ }
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+
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+ public static void initResourceTypes(int count, String units) {
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+ CustomResourceTypesConfigurationProvider.setResourceTypes(count, units);
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+ initResourceTypesInternal();
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+ }
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+
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+ public static void initResourceTypes(String... resourceTypes) {
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+ // Initialize resource map
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+ Map<String, ResourceInformation> riMap = new HashMap<>();
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+
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+ // Initialize mandatory resources
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+ riMap.put(ResourceInformation.MEMORY_URI, ResourceInformation.MEMORY_MB);
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+ riMap.put(ResourceInformation.VCORES_URI, ResourceInformation.VCORES);
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+
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+ for (String newResource : resourceTypes) {
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+ riMap.put(newResource, ResourceInformation
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+ .newInstance(newResource, "", 0, ResourceTypes.COUNTABLE, 0,
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+ Integer.MAX_VALUE));
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+ }
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+
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+ ResourceUtils.initializeResourcesFromResourceInformationMap(riMap);
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+ }
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+
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+ private static void initResourceTypesInternal() {
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+ Configuration configuration = new Configuration();
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+ configuration.set(YarnConfiguration.RM_CONFIGURATION_PROVIDER_CLASS,
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+ CustomResourceTypesConfigurationProvider.class.getName());
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+ ResourceUtils.resetResourceTypes(configuration);
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+ }
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+
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+ private static CustomResourceTypes createCustomResourceTypes(
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+ int count, String units) {
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+ List<String> resourceNames = generateResourceTypeNames(count);
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+ Map<String, String> resourcesWithUnits = resourceNames.stream().collect(
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+ Collectors.toMap(e -> e, e -> units));
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+ return createCustomResourceTypes(resourcesWithUnits);
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+ }
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+
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+ private static CustomResourceTypes createCustomResourceTypes(
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+ Map<String, String> resourcesWithUnits) {
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+ int count = resourcesWithUnits.size();
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+ List<String> resourceNames = Lists.newArrayList(
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+ resourcesWithUnits.keySet());
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+
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+ List<String> resourceUnitXmlElements = IntStream.range(0, count)
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+ .boxed()
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+ .map(i -> getResourceUnitsXml(resourceNames.get(i),
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+ resourcesWithUnits.get(resourceNames.get(i))))
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+ .collect(toList());
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+
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+ StringBuilder sb = new StringBuilder("<configuration>\n");
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+ sb.append(getResourceTypesXml(resourceNames));
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+
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+ for (String resourceUnitXml : resourceUnitXmlElements) {
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+ sb.append(resourceUnitXml);
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+
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+ }
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+ sb.append("</configuration>");
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+
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+ return new CustomResourceTypes(sb.toString(), count);
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+ }
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+
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+ private static List<String> generateResourceTypeNames(int count) {
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+ return IntStream.range(0, count)
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+ .boxed()
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+ .map(i -> CUSTOM_RESOURCE_PREFIX + (i + 1))
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+ .collect(toList());
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+ }
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+
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+ private static String getResourceUnitsXml(String resource, String units) {
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+ return "<property>\n" +
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+ "<name>yarn.resource-types." + resource+ ".units</name>\n" +
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+ "<value>" + units + "</value>\n" +
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+ "</property>\n";
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+ }
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+
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+ private static String getResourceTypesXml(List<String> resources) {
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+ final String resourceTypes = String.join(",", resources);
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+
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+ return "<property>\n" +
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+ "<name>yarn.resource-types</name>\n" +
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+ "<value>" + resourceTypes + "</value>\n" + "</property>\n";
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+ }
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+
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+ public static void reset() {
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+ customResourceTypes = createCustomResourceTypes(2, UNIT_KILO);
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+ }
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+
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+ public static void setResourceTypes(int count, String units) {
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+ customResourceTypes = createCustomResourceTypes(count, units);
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+ }
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+
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+ public static void setResourceTypes(Map<String, String> resourcesWithUnits) {
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+ customResourceTypes = createCustomResourceTypes(resourcesWithUnits);
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+ }
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+
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+ public static List<String> getCustomResourceTypes() {
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+ return generateResourceTypeNames(customResourceTypes.getCount());
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+ }
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+
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+ private static class CustomResourceTypes {
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+ private int count;
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+ private String xml;
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+
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+ CustomResourceTypes(String xml, int count) {
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+ this.xml = xml;
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+ this.count = count;
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+ }
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+
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+ public int getCount() {
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+ return count;
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+ }
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+ public String getXml() {
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+ return xml;
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+ }
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+ }
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+
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+}
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