com.edmunds.rest.databricks.service.LibraryServiceImpl Maven / Gradle / Ivy

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A simple java rest client to interact with the Databricks Rest Service https://docs.databricks.com/api/latest/index.html
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/*
 * Copyright 2018 Edmunds.com, Inc.
 *
 *    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 com.edmunds.rest.databricks.service;

import com.edmunds.rest.databricks.DTO.libraries.ClusterLibraryStatusesDTO;
import com.edmunds.rest.databricks.DTO.libraries.LibraryDTO;
import com.edmunds.rest.databricks.DTO.libraries.LibraryFullStatusDTO;
import com.edmunds.rest.databricks.DatabricksRestException;
import com.edmunds.rest.databricks.RequestMethod;
import com.edmunds.rest.databricks.restclient.DatabricksRestClient;
import com.fasterxml.jackson.core.type.TypeReference;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

/**
 * Implementation of LibraryService.
 */
public final class LibraryServiceImpl extends DatabricksService implements LibraryService {

  private static Logger log = LogManager.getLogger(LibraryServiceImpl.class);

  public LibraryServiceImpl(final DatabricksRestClient client) {
    super(client);
  }

  @Override
  public ClusterLibraryStatusesDTO[] allClusterStatuses()
      throws IOException, DatabricksRestException {
    byte[] response = client
        .performQuery(RequestMethod.GET, "/libraries/all-cluster-statuses", null);
    Map jsonObject = this.mapper.readValue(response, new
        TypeReference>() {
        });
    return jsonObject.get("statuses");
  }

  @Override
  public ClusterLibraryStatusesDTO clusterStatus(String clusterId)
      throws IOException, DatabricksRestException {
    Map data = new HashMap<>();
    data.put("cluster_id", clusterId);
    byte[] response = client.performQuery(RequestMethod.GET, "/libraries/cluster-status", data);
    return this.mapper.readValue(response, ClusterLibraryStatusesDTO.class);
  }

  @Override
  public void install(String clusterId, LibraryDTO[] libraries)
      throws IOException, DatabricksRestException {
    Map data = new HashMap<>();
    data.put("cluster_id", clusterId);
    data.put("libraries", libraries);

    client.performQuery(RequestMethod.POST, "/libraries/install", data);
  }

  @Override
  public void uninstall(String clusterId, LibraryDTO[] libraries)
      throws IOException, DatabricksRestException {
    Map data = new HashMap<>();
    data.put("cluster_id", clusterId);
    data.put("libraries", libraries);

    client.performQuery(RequestMethod.POST, "/libraries/uninstall", data);
  }

  @Override
  public void uninstallAll(String clusterId) throws IOException, DatabricksRestException {
    ClusterLibraryStatusesDTO clusterStatuses = clusterStatus(clusterId);
    List librariesToUninstall = new ArrayList<>();
    for (LibraryFullStatusDTO libraryStatusDTO : clusterStatuses.getLibraryFullStatuses()) {
      log.info("Found Library: " + libraryStatusDTO.getLibrary().toString());
      librariesToUninstall.add(libraryStatusDTO.getLibrary());
    }
    try {
      uninstall(clusterId,
          librariesToUninstall.toArray(new LibraryDTO[librariesToUninstall.size()]));
    } catch (DatabricksRestException e) {
      log.error(e);
      throw new DatabricksRestException("Error uninstalling libraries");
    }
  }
}