| /** |
| * 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.heron.apiserver.utils; |
| |
| import java.io.IOException; |
| import java.io.Reader; |
| import java.io.Writer; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.Properties; |
| |
| import org.yaml.snakeyaml.DumperOptions; |
| import org.yaml.snakeyaml.Yaml; |
| import org.yaml.snakeyaml.constructor.SafeConstructor; |
| |
| import org.apache.heron.api.exception.InvalidTopologyException; |
| import org.apache.heron.api.generated.TopologyAPI; |
| import org.apache.heron.api.utils.TopologyUtils; |
| import org.apache.heron.common.basics.SysUtils; |
| import org.apache.heron.scheduler.utils.SubmitterUtils; |
| import org.apache.heron.spi.common.Config; |
| import org.apache.heron.spi.common.ConfigLoader; |
| import org.apache.heron.spi.common.Key; |
| |
| public final class ConfigUtils { |
| |
| private static final String CONFIG_SUFFIX = ".yaml"; |
| |
| public static Config.Builder builder(Config baseConfiguration) { |
| return Config.newBuilder().putAll(baseConfiguration); |
| } |
| |
| public static String createOverrideConfiguration(Properties properties) throws IOException { |
| final Path overridesPath = Files.createTempFile("overrides-", CONFIG_SUFFIX); |
| try (Writer writer = Files.newBufferedWriter(overridesPath)) { |
| final Map<Object, Object> overrides = new HashMap<>(); |
| for (Map.Entry<Object, Object> entry : properties.entrySet()) { |
| overrides.put(entry.getKey(), entry.getValue()); |
| } |
| final Yaml yaml = newYaml(); |
| yaml.dump(overrides, writer); |
| |
| return overridesPath.toFile().getAbsolutePath(); |
| } finally { |
| overridesPath.toFile().deleteOnExit(); |
| } |
| } |
| |
| public static Config getBaseConfiguration(String heronDirectory, |
| String heronConfigDirectory, |
| String releaseFile, |
| String overrideConfigurationFile) { |
| // TODO add release file |
| Config config = ConfigLoader.loadConfig(heronDirectory, |
| heronConfigDirectory, |
| releaseFile, |
| overrideConfigurationFile); |
| // Put location of the override file in the config so that schedulers invoked by |
| // the API server can load the override configs if needed. OVERRIDE_YAML cannot be used |
| // to set this because then the location will get passed on to the heron executors |
| return Config.newBuilder() |
| .putAll(config) |
| .put(Key.APISERVER_OVERRIDE_YAML, overrideConfigurationFile) |
| .build(); |
| } |
| |
| public static Config getTopologyConfig(String topologyPackage, String topologyBinaryFile, |
| String topologyDefinitionFile) { |
| |
| final TopologyAPI.Topology topology; |
| try { |
| topology = TopologyUtils.getTopology(topologyDefinitionFile); |
| } catch (InvalidTopologyException e) { |
| throw new RuntimeException(e); |
| } |
| return SubmitterUtils.topologyConfigs( |
| topologyPackage, |
| topologyBinaryFile, |
| topologyDefinitionFile, |
| topology); |
| } |
| |
| @SuppressWarnings("unchecked") |
| public static void applyOverrides(Path overridesPath, Map<String, String> overrides) |
| throws IOException { |
| if (overrides.isEmpty()) { |
| return; |
| } |
| final Path tempOverridesPath = Files.createTempFile("overrides-", CONFIG_SUFFIX); |
| |
| Reader overrideReader = null; |
| try (Writer writer = Files.newBufferedWriter(tempOverridesPath)) { |
| overrideReader = Files.newBufferedReader(overridesPath); |
| final Map<String, Object> currentOverrides = |
| (Map<String, Object>) new Yaml(new SafeConstructor()).load(overrideReader); |
| currentOverrides.putAll(overrides); |
| |
| // write updated overrides |
| newYaml().dump(currentOverrides, writer); |
| |
| // close override file so we can replace it with the updated overrides |
| overrideReader.close(); |
| |
| FileHelper.copy(tempOverridesPath, overridesPath); |
| } finally { |
| tempOverridesPath.toFile().delete(); |
| SysUtils.closeIgnoringExceptions(overrideReader); |
| } |
| } |
| |
| // this is needed because the heron executor ignores the override.yaml |
| @SuppressWarnings("unchecked") |
| public static void applyOverridesToStateManagerConfig(Path overridesPath, |
| Path stateManagerPath) throws IOException { |
| final Path tempStateManagerPath = Files.createTempFile("statemgr-", CONFIG_SUFFIX); |
| Reader stateManagerReader = null; |
| try ( |
| Reader overrideReader = Files.newBufferedReader(overridesPath); |
| Writer writer = Files.newBufferedWriter(tempStateManagerPath); |
| ) { |
| stateManagerReader = Files.newBufferedReader(stateManagerPath); |
| |
| final Map<String, Object> overrides = (Map<String, Object>) new Yaml(new SafeConstructor()).load(overrideReader); |
| final Map<String, Object> stateMangerConfig = |
| (Map<String, Object>) new Yaml(new SafeConstructor()).load(stateManagerReader); |
| // update the state manager config with the overrides |
| for (Map.Entry<String, Object> entry : overrides.entrySet()) { |
| // does this key have an override? |
| if (stateMangerConfig.containsKey(entry.getKey())) { |
| stateMangerConfig.put(entry.getKey(), entry.getValue()); |
| } |
| } |
| |
| // write new state manager config |
| newYaml().dump(stateMangerConfig, writer); |
| |
| // close state manager file so we can replace it with the updated configuration |
| stateManagerReader.close(); |
| |
| FileHelper.copy(tempStateManagerPath, stateManagerPath); |
| } finally { |
| tempStateManagerPath.toFile().delete(); |
| SysUtils.closeIgnoringExceptions(stateManagerReader); |
| } |
| } |
| |
| private static Yaml newYaml() { |
| final DumperOptions options = new DumperOptions(); |
| options.setDefaultFlowStyle(DumperOptions.FlowStyle.BLOCK); |
| options.setPrettyFlow(true); |
| |
| return new Yaml(options); |
| } |
| |
| private ConfigUtils() { |
| } |
| } |