BigQuery Data Transfer Service API Client Libraries

This page shows how to get started with the Cloud Client Libraries for the BigQuery Data Transfer API. Client libraries make it easier to access Google Cloud APIs from a supported language. Although you can use Google Cloud APIs directly by making raw requests to the server, client libraries provide simplifications that significantly reduce the amount of code you need to write.

Read more about the Cloud Client Libraries and the older Google API Client Libraries in Client libraries explained.

Install the client library

C#

Install-Package Google.Cloud.BigQuery.DataTransfer.V1 -Pre

For more information, see Setting Up a C# Development Environment.

Go

go get cloud.google.com/go/bigquery/datatransfer/apiv1

For more information, see Setting Up a Go Development Environment.

Java

If you are using Maven, add the following to your pom.xml file. For more information about BOMs, see The Google Cloud Platform Libraries BOM.

<dependencyManagement>
  <dependencies>
    <dependency>
      <groupId>com.google.cloud</groupId>
      <artifactId>libraries-bom</artifactId>
      <version>26.50.0</version>
      <type>pom</type>
      <scope>import</scope>
    </dependency>
  </dependencies>
</dependencyManagement>

<dependencies>
  <dependency>
    <groupId>com.google.cloud</groupId>
    <artifactId>google-cloud-bigquerydatatransfer</artifactId>
  </dependency>
</dependencies>

If you are using Gradle, add the following to your dependencies:

implementation 'com.google.cloud:google-cloud-bigquerydatatransfer:2.53.0'

If you are using sbt, add the following to your dependencies:

libraryDependencies += "com.google.cloud" % "google-cloud-bigquerydatatransfer" % "2.53.0"

If you're using Visual Studio Code, IntelliJ, or Eclipse, you can add client libraries to your project using the following IDE plugins:

• Cloud Code for VS Code
• Cloud Code for IntelliJ
• Cloud Tools for Eclipse

The plugins provide additional functionality, such as key management for service accounts. Refer to each plugin's documentation for details.

Note: Cloud Java client libraries do not currently support Android.

For more information, see Setting Up a Java Development Environment.

Node.js

npm install --save @google-cloud/bigquery-data-transfer

For more information, see Setting Up a Node.js Development Environment.

PHP

composer require google/cloud-bigquerydatatransfer

For more information, see Using PHP on Google Cloud.

Python

pip install --upgrade google-cloud-bigquery-datatransfer

For more information, see Setting Up a Python Development Environment.

Ruby

gem install google-cloud-bigquery-data_transfer

For more information, see Setting Up a Ruby Development Environment.

Set up authentication

To authenticate calls to Google Cloud APIs, client libraries support Application Default Credentials (ADC); the libraries look for credentials in a set of defined locations and use those credentials to authenticate requests to the API. With ADC, you can make credentials available to your application in a variety of environments, such as local development or production, without needing to modify your application code.

For production environments, the way you set up ADC depends on the service and context. For more information, see Set up Application Default Credentials.

For a local development environment, you can set up ADC with the credentials that are associated with your Google Account:

1. Install the Google Cloud CLI, then initialize it by running the following command:

   gcloud init

2. If you're using a local shell, then create local authentication credentials for your user account:

   gcloud auth application-default login

   You don't need to do this if you're using Cloud Shell.

   A sign-in screen appears. After you sign in, your credentials are stored in the local credential file used by ADC.

Use the client library

The following example shows how to use the client library.

C#

using Google.Api.Gax.ResourceNames;
using Google.Cloud.BigQuery.DataTransfer.V1;
using System;

namespace GoogleCloudSamples
{
    public class QuickStart
    {
        public static void Main(string[] args)
        {
            // Instantiates a client
            DataTransferServiceClient client = DataTransferServiceClient.Create();

            // Your Google Cloud Platform project ID
            string projectId = "YOUR-PROJECT-ID";

            ProjectName project = ProjectName.FromProject(projectId);
            var sources = client.ListDataSources(project);
            Console.WriteLine("Supported Data Sources:");
            foreach (DataSource source in sources)
            {
                Console.WriteLine(
                    $"{source.DataSourceId}: " +
                    $"{source.DisplayName} ({source.Description})");
            }
        }
    }
}

Go

// Sample bigquery-quickstart creates a Google BigQuery dataset.
package main

import (
	"fmt"
	"log"

	"golang.org/x/net/context"
	"google.golang.org/api/iterator"

	// Imports the BigQuery Data Transfer client package.
	datatransfer "cloud.google.com/go/bigquery/datatransfer/apiv1"
	datatransferpb "google.golang.org/genproto/googleapis/cloud/bigquery/datatransfer/v1"
)

func main() {
	ctx := context.Background()

	// Sets your Google Cloud Platform project ID.
	projectID := "YOUR_PROJECT_ID"

	// Creates a client.
	client, err := datatransfer.NewClient(ctx)
	if err != nil {
		log.Fatalf("Failed to create client: %v", err)
	}

	req := &datatransferpb.ListDataSourcesRequest{
		Parent: fmt.Sprintf("projects/%s", projectID),
	}
	it := client.ListDataSources(ctx, req)
	fmt.Println("Supported Data Sources:")
	for {
		ds, err := it.Next()
		if err == iterator.Done {
			break
		}
		if err != nil {
			log.Fatalf("Failed to list sources: %v", err)
		}
		fmt.Println(ds.DisplayName)
		fmt.Println("\tID: ", ds.DataSourceId)
		fmt.Println("\tFull path: ", ds.Name)
		fmt.Println("\tDescription: ", ds.Description)
	}
}

Java

// Imports the Google Cloud client library

import com.google.cloud.bigquery.datatransfer.v1.DataSource;
import com.google.cloud.bigquery.datatransfer.v1.DataTransferServiceClient;
import com.google.cloud.bigquery.datatransfer.v1.DataTransferServiceClient.ListDataSourcesPagedResponse;
import com.google.cloud.bigquery.datatransfer.v1.ListDataSourcesRequest;

public class QuickstartSample {
  /** List available data sources for the BigQuery Data Transfer service. */
  public static void main(String... args) throws Exception {
    // Sets your Google Cloud Platform project ID.
    // String projectId = "YOUR_PROJECT_ID";
    String projectId = args[0];

    // Instantiate a client. If you don't specify credentials when constructing a client, the
    // client library will look for credentials in the environment, such as the
    // GOOGLE_APPLICATION_CREDENTIALS environment variable.
    try (DataTransferServiceClient client = DataTransferServiceClient.create()) {
      // Request the list of available data sources.
      String parent = String.format("projects/%s", projectId);
      ListDataSourcesRequest request =
          ListDataSourcesRequest.newBuilder().setParent(parent).build();
      ListDataSourcesPagedResponse response = client.listDataSources(request);

      // Print the results.
      System.out.println("Supported Data Sources:");
      for (DataSource dataSource : response.iterateAll()) {
        System.out.println(dataSource.getDisplayName());
        System.out.printf("\tID: %s%n", dataSource.getDataSourceId());
        System.out.printf("\tFull path: %s%n", dataSource.getName());
        System.out.printf("\tDescription: %s%n", dataSource.getDescription());
      }
    }
  }
}

Node.js

const bigqueryDataTransfer = require('@google-cloud/bigquery-data-transfer');
const client = new bigqueryDataTransfer.v1.DataTransferServiceClient();

async function quickstart() {
  const projectId = await client.getProjectId();

  // Iterate over all elements.
  const formattedParent = client.projectPath(projectId, 'us-central1');
  let nextRequest = {parent: formattedParent};
  const options = {autoPaginate: false};
  console.log('Data sources:');
  do {
    // Fetch the next page.
    const responses = await client.listDataSources(nextRequest, options);
    // The actual resources in a response.
    const resources = responses[0];
    // The next request if the response shows that there are more responses.
    nextRequest = responses[1];
    // The actual response object, if necessary.
    // const rawResponse = responses[2];
    resources.forEach(resource => {
      console.log(`  ${resource.name}`);
    });
  } while (nextRequest);

  console.log('\n\n');
  console.log('Sources via stream:');

  client
    .listDataSourcesStream({parent: formattedParent})
    .on('data', element => {
      console.log(`  ${element.name}`);
    });
}
quickstart();

PHP

# Includes the autoloader for libraries installed with composer
require __DIR__ . '/vendor/autoload.php';

# Imports the Google Cloud client library
use Google\Cloud\BigQuery\DataTransfer\V1\DataTransferServiceClient;

# Instantiates a client
$bqdtsClient = new DataTransferServiceClient();

# Your Google Cloud Platform project ID
$projectId = 'YOUR_PROJECT_ID';
$parent = sprintf('projects/%s/locations/us', $projectId);

try {
    echo 'Supported Data Sources:', PHP_EOL;
    $pagedResponse = $bqdtsClient->listDataSources($parent);
    foreach ($pagedResponse->iterateAllElements() as $dataSource) {
        echo 'Data source: ', $dataSource->getDisplayName(), PHP_EOL;
        echo 'ID: ', $dataSource->getDataSourceId(), PHP_EOL;
        echo 'Full path: ', $dataSource->getName(), PHP_EOL;
        echo 'Description: ', $dataSource->getDescription(), PHP_EOL;
    }
} finally {
    $bqdtsClient->close();
}

Python

from google.cloud import bigquery_datatransfer

client = bigquery_datatransfer.DataTransferServiceClient()

# TODO: Update to your project ID.
project_id = "my-project"

# Get the full path to your project.
parent = client.common_project_path(project_id)

print("Supported Data Sources:")

# Iterate over all possible data sources.
for data_source in client.list_data_sources(parent=parent):
    print("{}:".format(data_source.display_name))
    print("\tID: {}".format(data_source.data_source_id))
    print("\tFull path: {}".format(data_source.name))
    print("\tDescription: {}".format(data_source.description))

Ruby

# Imports the Google Cloud client library
require "google/cloud/bigquery/data_transfer"

# Your Google Cloud Platform project ID
# project_id = "YOUR_PROJECT_ID"

# Instantiate a client
data_transfer = Google::Cloud::Bigquery::DataTransfer.data_transfer_service

# Get the full path to your project.
project_path = data_transfer.project_path project: project_id

puts "Supported Data Sources:"

# Iterate over all possible data sources.
data_transfer.list_data_sources(parent: project_path).each do |data_source|
  puts "Data source: #{data_source.display_name}"
  puts "ID: #{data_source.data_source_id}"
  puts "Full path: #{data_source.name}"
  puts "Description: #{data_source.description}"
end

Additional resources

C#

The following list contains links to more resources related to the client library for C#:

• API reference
• Client libraries best practices
• Issue tracker
• google-bigquery on Stack Overflow
• Source code

Go

The following list contains links to more resources related to the client library for Go:

• API reference
• Client libraries best practices
• Issue tracker
• google-bigquery on Stack Overflow
• Source code

Java

The following list contains links to more resources related to the client library for Java:

• API reference
• Client libraries best practices
• Issue tracker
• google-bigquery on Stack Overflow
• Source code

Node.js

The following list contains links to more resources related to the client library for Node.js:

• API reference
• Client libraries best practices
• Issue tracker
• google-bigquery on Stack Overflow
• Source code

PHP

The following list contains links to more resources related to the client library for PHP:

• API reference
• Client libraries best practices
• Issue tracker
• google-bigquery on Stack Overflow
• Source code

Python

The following list contains links to more resources related to the client library for Python:

• API reference
• Client libraries best practices
• Issue tracker
• google-bigquery on Stack Overflow
• Source code

Ruby

The following list contains links to more resources related to the client library for Ruby:

• API reference
• Client libraries best practices
• Issue tracker
• google-bigquery on Stack Overflow
• Source code