| /* |
| * 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 com.epam.datalab.backendapi.core; |
| |
| import com.epam.datalab.backendapi.ProvisioningServiceApplicationConfiguration; |
| import com.epam.datalab.backendapi.core.commands.DockerCommands; |
| import com.epam.datalab.backendapi.core.commands.ICommandExecutor; |
| import com.epam.datalab.backendapi.core.commands.RunDockerCommand; |
| import com.epam.datalab.backendapi.core.response.folderlistener.FolderListenerExecutor; |
| import com.epam.datalab.dto.imagemetadata.ComputationalMetadataDTO; |
| import com.epam.datalab.dto.imagemetadata.ExploratoryMetadataDTO; |
| import com.epam.datalab.dto.imagemetadata.ImageMetadataDTO; |
| import com.epam.datalab.dto.imagemetadata.ImageType; |
| import com.epam.datalab.process.model.ProcessInfo; |
| import com.fasterxml.jackson.annotation.JsonCreator; |
| import com.fasterxml.jackson.annotation.JsonProperty; |
| import com.fasterxml.jackson.databind.JsonNode; |
| import com.google.inject.Inject; |
| import com.google.inject.Singleton; |
| import io.dropwizard.lifecycle.Managed; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.IOException; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.UUID; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.stream.Collectors; |
| |
| @Singleton |
| public class DockerWarmuper implements Managed, DockerCommands, MetadataHolder { |
| private static final Logger LOGGER = LoggerFactory.getLogger(DockerWarmuper.class); |
| public static final String EXPLORATORY_RESPONSE_MARKER = "exploratory_environment_shapes"; |
| |
| @Inject |
| private ProvisioningServiceApplicationConfiguration configuration; |
| @Inject |
| private FolderListenerExecutor folderListenerExecutor; |
| @Inject |
| private ICommandExecutor commandExecutor; |
| private Map<String, String> imageList = new ConcurrentHashMap<>(); |
| private Set<ImageMetadataDTO> metadataDTOs = ConcurrentHashMap.newKeySet(); |
| |
| |
| @Override |
| public void start() throws Exception { |
| LOGGER.debug("warming up docker"); |
| final ProcessInfo processInfo = commandExecutor.executeSync("warmup", DockerCommands.generateUUID(), |
| GET_IMAGES); |
| List<String> images = Arrays.asList(processInfo.getStdOut().split("\n")); |
| for (String image : images) { |
| String uuid = UUID.randomUUID().toString(); |
| LOGGER.debug("warming up image: {} with uid {}", image, uuid); |
| imageList.put(uuid, image); |
| folderListenerExecutor.start(configuration.getWarmupDirectory(), |
| configuration.getWarmupPollTimeout(), |
| getFileHandlerCallback(uuid)); |
| String command = new RunDockerCommand() |
| .withVolumeForRootKeys(configuration.getKeyDirectory()) |
| .withVolumeForResponse(configuration.getWarmupDirectory()) |
| .withVolumeForLog(configuration.getDockerLogDirectory(), getResourceType()) |
| .withResource(getResourceType()) |
| .withRequestId(uuid) |
| .withActionDescribe(image) |
| .toCMD(); |
| commandExecutor.executeAsync("warmup", uuid, command); |
| } |
| } |
| |
| public class DockerFileHandlerCallback implements FileHandlerCallback { |
| private final String uuid; |
| |
| @JsonCreator |
| public DockerFileHandlerCallback(@JsonProperty("uuid") String uuid) { |
| this.uuid = uuid; |
| } |
| |
| @Override |
| public String getUUID() { |
| return uuid; |
| } |
| |
| @Override |
| public boolean checkUUID(String uuid) { |
| return this.uuid.equals(uuid); |
| } |
| |
| @Override |
| public boolean handle(String fileName, byte[] content) { |
| String uuid = DockerCommands.extractUUID(fileName); |
| try { |
| LOGGER.debug("processing response file {} with content {}", fileName, new String(content)); |
| addMetadata(content, uuid); |
| } catch (IOException e) { |
| LOGGER.error("processing response file {} fails", fileName, e); |
| return false; |
| } |
| return true; |
| } |
| |
| @Override |
| public void handleError(String errorMessage) { |
| LOGGER.warn("docker warmupper returned no result: {}", errorMessage); |
| } |
| |
| @Override |
| public String getUser() { |
| return "DATALAB"; |
| } |
| } |
| |
| public DockerFileHandlerCallback getFileHandlerCallback(String uuid) { |
| return new DockerFileHandlerCallback(uuid); |
| } |
| |
| private void addMetadata(byte[] content, String uuid) throws IOException { |
| final JsonNode jsonNode = MAPPER.readTree(content); |
| ImageMetadataDTO metadata; |
| if (jsonNode.has(EXPLORATORY_RESPONSE_MARKER)) { |
| metadata = MAPPER.readValue(content, ExploratoryMetadataDTO.class); |
| metadata.setImageType(ImageType.EXPLORATORY); |
| } else { |
| metadata = MAPPER.readValue(content, ComputationalMetadataDTO.class); |
| metadata.setImageType(ImageType.COMPUTATIONAL); |
| } |
| String image = imageList.get(uuid); |
| metadata.setImage(image); |
| LOGGER.debug("caching metadata for image {}: {}", image, metadata); |
| metadataDTOs.add(metadata); |
| } |
| |
| @Override |
| public void stop() throws Exception { |
| //do nothing |
| } |
| |
| public Map<String, String> getUuids() { |
| return Collections.unmodifiableMap(imageList); |
| } |
| |
| public Set<ImageMetadataDTO> getMetadata(ImageType type) { |
| return metadataDTOs.stream().filter(m -> m.getImageType().equals(type)) |
| .collect(Collectors.toSet()); |
| } |
| |
| @Override |
| public String getResourceType() { |
| return Directories.NOTEBOOK_LOG_DIRECTORY; |
| } |
| } |