services/provisioning-service/src/main/java/com/epam/datalab/backendapi/resources/aws/ComputationalResourceAws.java

/*
 * 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.resources.aws;

import com.epam.datalab.auth.UserInfo;
import com.epam.datalab.backendapi.core.Directories;
import com.epam.datalab.backendapi.core.FileHandlerCallback;
import com.epam.datalab.backendapi.core.commands.DockerAction;
import com.epam.datalab.backendapi.core.commands.DockerCommands;
import com.epam.datalab.backendapi.core.commands.RunDockerCommand;
import com.epam.datalab.backendapi.core.response.handlers.ComputationalCallbackHandler;
import com.epam.datalab.backendapi.core.response.handlers.ComputationalConfigure;
import com.epam.datalab.backendapi.service.impl.DockerService;
import com.epam.datalab.backendapi.service.impl.SparkClusterService;
import com.epam.datalab.dto.aws.computational.AwsComputationalTerminateDTO;
import com.epam.datalab.dto.aws.computational.ComputationalCreateAws;
import com.epam.datalab.dto.aws.computational.SparkComputationalCreateAws;
import com.epam.datalab.dto.base.DataEngineType;
import com.epam.datalab.dto.base.computational.ComputationalBase;
import com.epam.datalab.dto.computational.ComputationalClusterConfigDTO;
import com.epam.datalab.dto.computational.ComputationalStartDTO;
import com.epam.datalab.dto.computational.ComputationalStopDTO;
import com.epam.datalab.exceptions.DatalabException;
import com.epam.datalab.rest.contracts.ComputationalAPI;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.google.inject.Inject;
import io.dropwizard.auth.Auth;
import lombok.extern.slf4j.Slf4j;

import javax.ws.rs.Consumes;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;

import static com.epam.datalab.backendapi.core.commands.DockerAction.CREATE;
import static com.epam.datalab.backendapi.core.commands.DockerAction.TERMINATE;

@Path("/")
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
@Slf4j
public class ComputationalResourceAws extends DockerService implements DockerCommands {

    private static final DataEngineType EMR_DATA_ENGINE = DataEngineType.CLOUD_SERVICE;
    @Inject
    private ComputationalConfigure computationalConfigure;
    @Inject
    private SparkClusterService sparkClusterService;

    @POST
    @Path(ComputationalAPI.COMPUTATIONAL_CREATE_CLOUD_SPECIFIC)
    public String create(@Auth UserInfo ui, ComputationalCreateAws dto) {

        log.info("Create computational resources {} for user {}: {}", dto.getComputationalName(), ui.getName(), dto);
        String uuid = DockerCommands.generateUUID();
        folderListenerExecutor.start(configuration.getImagesDirectory(),
                configuration.getResourceStatusPollTimeout(),
                getFileHandlerCallback(CREATE, uuid, dto));
        try {
            long timeout = configuration.getResourceStatusPollTimeout().toSeconds();
            commandExecutor.executeAsync(
                    ui.getName(),
                    uuid,
                    commandBuilder.buildCommand(
                            new RunDockerCommand()
                                    .withInteractive()
                                    .withName(nameContainer(dto.getEdgeUserName(), CREATE, dto.getExploratoryName(),
                                            dto.getComputationalName()))
                                    .withVolumeForRootKeys(configuration.getKeyDirectory())
                                    .withVolumeForResponse(configuration.getImagesDirectory())
                                    .withVolumeForLog(configuration.getDockerLogDirectory(), EMR_DATA_ENGINE.getName())
                                    .withResource(EMR_DATA_ENGINE.getName())
                                    .withRequestId(uuid)
                                    .withEc2Role(configuration.getEmrEC2RoleDefault())
                                    .withEmrTimeout(Long.toString(timeout))
                                    .withServiceRole(configuration.getEmrServiceRoleDefault())
                                    .withConfKeyName(configuration.getAdminKey())
                                    .withActionCreate(DataEngineType.getDockerImageName(EMR_DATA_ENGINE)),
                            dto
                    )
            );
        } catch (Exception t) {
            throw new DatalabException("Could not create computational resource cluster", t);
        }
        return uuid;
    }

    @POST
    @Path(ComputationalAPI.COMPUTATIONAL_TERMINATE_CLOUD_SPECIFIC)
    public String terminate(@Auth UserInfo ui, AwsComputationalTerminateDTO dto) {

        log.debug("Terminate computational resources {} for user {}: {}", dto.getComputationalName(), ui.getName(),
                dto);
        String uuid = DockerCommands.generateUUID();
        folderListenerExecutor.start(configuration.getImagesDirectory(),
                configuration.getResourceStatusPollTimeout(),
                getFileHandlerCallback(TERMINATE, uuid, dto));
        try {
            commandExecutor.executeAsync(
                    ui.getName(),
                    uuid,
                    commandBuilder.buildCommand(
                            new RunDockerCommand()
                                    .withInteractive()
                                    .withName(nameContainer(dto.getEdgeUserName(), TERMINATE,
                                            dto.getExploratoryName(), dto.getComputationalName()))
                                    .withVolumeForRootKeys(configuration.getKeyDirectory())
                                    .withVolumeForResponse(configuration.getImagesDirectory())
                                    .withVolumeForLog(configuration.getDockerLogDirectory(), EMR_DATA_ENGINE.getName())
                                    .withResource(EMR_DATA_ENGINE.getName())
                                    .withRequestId(uuid)
                                    .withConfKeyName(configuration.getAdminKey())
                                    .withActionTerminate(DataEngineType.getDockerImageName(EMR_DATA_ENGINE)),
                            dto
                    )
            );
        } catch (JsonProcessingException t) {
            throw new DatalabException("Could not terminate computational resources cluster", t);
        }

        return uuid;
    }

    @POST
    @Path(ComputationalAPI.COMPUTATIONAL_CREATE_SPARK)
    public String createSparkCluster(@Auth UserInfo ui, SparkComputationalCreateAws dto) {
        log.debug("Create computational Spark resources {} for user {}: {}", dto.getComputationalName(), ui.getName(),
                dto);

        return sparkClusterService.create(ui, dto);
    }


    @POST
    @Path(ComputationalAPI.COMPUTATIONAL_TERMINATE_SPARK)
    public String terminateSparkCluster(@Auth UserInfo ui, AwsComputationalTerminateDTO dto) {
        log.debug("Terminate computational Spark resource {} for user {}: {}", dto.getComputationalName(), ui.getName
                (), dto);

        return sparkClusterService.terminate(ui, dto);
    }

    @POST
    @Path(ComputationalAPI.COMPUTATIONAL_STOP_SPARK)
    public String stopSparkCluster(@Auth UserInfo ui, ComputationalStopDTO dto) {
        log.debug("Stop computational Spark resources {} for user {}: {}",
                dto.getComputationalName(), ui.getName(), dto);

        return sparkClusterService.stop(ui, dto);
    }

    @POST
    @Path(ComputationalAPI.COMPUTATIONAL_START_SPARK)
    public String startSparkCluster(@Auth UserInfo ui, ComputationalStartDTO dto) {
        log.debug("Start computational Spark resource {} for user {}: {}",
                dto.getComputationalName(), ui.getName(), dto);

        return sparkClusterService.start(ui, dto);
    }

    @POST
    @Path(ComputationalAPI.COMPUTATIONAL_RECONFIGURE_SPARK)
    public String reconfigureSparkCluster(@Auth UserInfo ui, ComputationalClusterConfigDTO config) {
        log.debug("User is reconfiguring {} spark cluster for exploratory {}", ui.getName(),
                config.getComputationalName(), config.getNotebookInstanceName());
        return sparkClusterService.updateConfig(ui, config);
    }

    private FileHandlerCallback getFileHandlerCallback(DockerAction action, String uuid, ComputationalBase<?> dto) {
        return new ComputationalCallbackHandler(computationalConfigure, selfService, action, uuid, dto);
    }

    private String nameContainer(String user, DockerAction action, String exploratoryName, String name) {
        return nameContainer(user, action.toString(), "computational", exploratoryName, name);
    }

    public String getResourceType() {
        return Directories.DATA_ENGINE_SERVICE_LOG_DIRECTORY;
    }
}