| /** |
| * Licensed 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.aurora.scheduler; |
| |
| import java.util.Map; |
| import java.util.Optional; |
| |
| import javax.inject.Inject; |
| |
| import com.google.common.annotations.VisibleForTesting; |
| import com.google.common.base.Strings; |
| import com.google.common.collect.ImmutableMap; |
| |
| import org.apache.aurora.scheduler.storage.entities.ITaskConfig; |
| import org.codehaus.jackson.annotate.JsonCreator; |
| import org.codehaus.jackson.annotate.JsonProperty; |
| |
| import static java.util.Objects.requireNonNull; |
| |
| import static com.google.common.base.Preconditions.checkArgument; |
| |
| /** |
| * Translates job tier configuration into a set of task traits/attributes. |
| */ |
| public interface TierManager { |
| |
| /** |
| * Gets {@link TierInfo} instance representing task's tier details. |
| * |
| * @param taskConfig Task configuration to get tier for. |
| * @return {@link TierInfo} for the given {@code taskConfig}. |
| */ |
| TierInfo getTier(ITaskConfig taskConfig); |
| |
| /** |
| * Gets name of the default tier. |
| * |
| * @return Name for the default tier. |
| */ |
| String getDefaultTierName(); |
| |
| /** |
| * Gets the map of tier name to {@link TierInfo} instance. |
| * |
| * @return A readonly view of all tiers. |
| */ |
| Map<String, TierInfo> getTiers(); |
| |
| class TierManagerImpl implements TierManager { |
| private final TierConfig tierConfig; |
| |
| @VisibleForTesting |
| public static class TierConfig { |
| private final String defaultTier; |
| private final Map<String, TierInfo> tiers; |
| |
| @VisibleForTesting |
| @JsonCreator |
| public TierConfig( |
| @JsonProperty("default") String defaultTier, |
| @JsonProperty("tiers") Map<String, TierInfo> tiers) { |
| |
| checkArgument(!Strings.isNullOrEmpty(defaultTier), "Default tier name cannot be empty."); |
| checkArgument(!tiers.isEmpty(), "Tiers cannot be empty."); |
| checkArgument( |
| tiers.containsKey(defaultTier), |
| "Default tier name should match supplied tiers."); |
| this.defaultTier = defaultTier; |
| this.tiers = ImmutableMap.copyOf(tiers); |
| } |
| |
| @VisibleForTesting |
| public String getDefault() { |
| return defaultTier; |
| } |
| |
| @VisibleForTesting |
| public Map<String, TierInfo> getTiers() { |
| return tiers; |
| } |
| } |
| |
| @VisibleForTesting |
| @Inject |
| public TierManagerImpl(TierConfig tierConfig) { |
| this.tierConfig = requireNonNull(tierConfig); |
| } |
| |
| @Override |
| public TierInfo getTier(ITaskConfig taskConfig) { |
| checkArgument( |
| !taskConfig.isSetTier() || tierConfig.tiers.containsKey(taskConfig.getTier()), |
| "Invalid tier '%s' in TaskConfig.", taskConfig.getTier()); |
| |
| return tierConfig.tiers.get( |
| Optional.ofNullable(taskConfig.getTier()).orElse(tierConfig.defaultTier)); |
| } |
| |
| @Override |
| public String getDefaultTierName() { |
| return tierConfig.defaultTier; |
| } |
| |
| @Override |
| public Map<String, TierInfo> getTiers() { |
| return tierConfig.tiers; |
| } |
| } |
| } |