從 Amazon Redshift 載入資料

安排從 Amazon Redshift 傳輸至 BigQuery 的週期性載入作業。

深入探索

如需包含這個程式碼範例的詳細說明文件，請參閱下列內容：

• 從 Amazon Redshift 遷移結構定義和資料

程式碼範例

Java

在試行這個範例之前，請先按照 BigQuery 快速入門導覽課程：使用用戶端程式庫中的 Java 設定說明進行操作。詳情請參閱 BigQuery Java API 參考說明文件。

如要向 BigQuery 進行驗證，請設定應用程式預設憑證。 詳情請參閱「設定用戶端程式庫的驗證機制」。

import com.google.api.gax.rpc.ApiException;
import com.google.cloud.bigquery.datatransfer.v1.CreateTransferConfigRequest;
import com.google.cloud.bigquery.datatransfer.v1.DataTransferServiceClient;
import com.google.cloud.bigquery.datatransfer.v1.ProjectName;
import com.google.cloud.bigquery.datatransfer.v1.TransferConfig;
import com.google.protobuf.Struct;
import com.google.protobuf.Value;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

// Sample to create redshift transfer config
public class CreateRedshiftTransfer {

  public static void main(String[] args) throws IOException {
    // TODO(developer): Replace these variables before running the sample.
    final String projectId = "MY_PROJECT_ID";
    String datasetId = "MY_DATASET_ID";
    String datasetRegion = "US";
    String jdbcUrl = "MY_JDBC_URL_CONNECTION_REDSHIFT";
    String dbUserName = "MY_USERNAME";
    String dbPassword = "MY_PASSWORD";
    String accessKeyId = "MY_AWS_ACCESS_KEY_ID";
    String secretAccessId = "MY_AWS_SECRET_ACCESS_ID";
    String s3Bucket = "MY_S3_BUCKET_URI";
    String redShiftSchema = "MY_REDSHIFT_SCHEMA";
    String tableNamePatterns = "*";
    String vpcAndReserveIpRange = "MY_VPC_AND_IP_RANGE";
    Map<String, Value> params = new HashMap<>();
    params.put("jdbc_url", Value.newBuilder().setStringValue(jdbcUrl).build());
    params.put("database_username", Value.newBuilder().setStringValue(dbUserName).build());
    params.put("database_password", Value.newBuilder().setStringValue(dbPassword).build());
    params.put("access_key_id", Value.newBuilder().setStringValue(accessKeyId).build());
    params.put("secret_access_key", Value.newBuilder().setStringValue(secretAccessId).build());
    params.put("s3_bucket", Value.newBuilder().setStringValue(s3Bucket).build());
    params.put("redshift_schema", Value.newBuilder().setStringValue(redShiftSchema).build());
    params.put("table_name_patterns", Value.newBuilder().setStringValue(tableNamePatterns).build());
    params.put(
        "migration_infra_cidr", Value.newBuilder().setStringValue(vpcAndReserveIpRange).build());
    TransferConfig transferConfig =
        TransferConfig.newBuilder()
            .setDestinationDatasetId(datasetId)
            .setDatasetRegion(datasetRegion)
            .setDisplayName("Your Redshift Config Name")
            .setDataSourceId("redshift")
            .setParams(Struct.newBuilder().putAllFields(params).build())
            .setSchedule("every 24 hours")
            .build();
    createRedshiftTransfer(projectId, transferConfig);
  }

  public static void createRedshiftTransfer(String projectId, TransferConfig transferConfig)
      throws IOException {
    try (DataTransferServiceClient client = DataTransferServiceClient.create()) {
      ProjectName parent = ProjectName.of(projectId);
      CreateTransferConfigRequest request =
          CreateTransferConfigRequest.newBuilder()
              .setParent(parent.toString())
              .setTransferConfig(transferConfig)
              .build();
      TransferConfig config = client.createTransferConfig(request);
      System.out.println("Cloud redshift transfer created successfully :" + config.getName());
    } catch (ApiException ex) {
      System.out.print("Cloud redshift transfer was not created." + ex.toString());
    }
  }
}

後續步驟

如要搜尋及篩選其他 Google Cloud 產品的程式碼範例，請參閱Google Cloud 範例瀏覽器。