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import com.google.api.gax.core.FixedCredentialsProvider;
import com.google.auth.oauth2.GoogleCredentials;
import com.google.protobuf.FieldMask;
import com.google.shopping.merchant.datasources.v1.DataSourceName;
import com.google.shopping.merchant.products.v1.Availability;
import com.google.shopping.merchant.products.v1.Condition;
import com.google.shopping.merchant.products.v1.ProductAttributes;
import com.google.shopping.merchant.products.v1.ProductInput;
import com.google.shopping.merchant.products.v1.ProductInputName;
import com.google.shopping.merchant.products.v1.ProductInputsServiceClient;
import com.google.shopping.merchant.products.v1.ProductInputsServiceSettings;
import com.google.shopping.merchant.products.v1.UpdateProductInputRequest;
import com.google.shopping.type.CustomAttribute;
import shopping.merchant.samples.utils.Authenticator;
import shopping.merchant.samples.utils.Config;

/** This class demonstrates how to update a product input */
public class UpdateProductInputSample {

  public static void updateProductInput(Config config, String productId, String dataSourceId)
      throws Exception {

    // Obtains OAuth token based on the user's configuration.
    GoogleCredentials credential = new Authenticator().authenticate();

    // Creates service settings using the credentials retrieved above.
    ProductInputsServiceSettings productInputsServiceSettings =
        ProductInputsServiceSettings.newBuilder()
            .setCredentialsProvider(FixedCredentialsProvider.create(credential))
            .build();

    // Creates product name to identify product.
    String name =
        ProductInputName.newBuilder()
            .setAccount(config.getAccountId().toString())
            .setProductinput(productId)
            .build()
            .toString();

    // Just productAttributes and customAttributes can be updated
    FieldMask fieldMask =
        FieldMask.newBuilder()
            .addPaths("product_attributes.title")
            .addPaths("product_attributes.description")
            .addPaths("product_attributes.link")
            .addPaths("product_attributes.image_link")
            .addPaths("product_attributes.availability")
            .addPaths("product_attributes.condition")
            .addPaths("product_attributes.gtins")
            .addPaths("custom_attributes.mycustomattribute")
            .build();

    // Calls the API and catches and prints any network failures/errors.
    try (ProductInputsServiceClient productInputsServiceClient =
        ProductInputsServiceClient.create(productInputsServiceSettings)) {

      ProductAttributes attributes =
          ProductAttributes.newBuilder()
              .setTitle("A Tale of Two Cities")
              .setDescription("A classic novel about the French Revolution")
              .setLink("https://exampleWebsite.com/tale-of-two-cities.html")
              .setImageLink("https://exampleWebsite.com/tale-of-two-cities.jpg")
              .setAvailability(Availability.IN_STOCK)
              .setCondition(Condition.NEW)
              .addGtins("9780007350896")
              .build();

      // The datasource can be either a primary or supplemental datasource.
      String dataSource =
          DataSourceName.newBuilder()
              .setAccount(config.getAccountId().toString())
              .setDatasource(dataSourceId)
              .build()
              .toString();

      UpdateProductInputRequest request =
          UpdateProductInputRequest.newBuilder()
              .setUpdateMask(fieldMask)
              // You can only update product attributes and custom_attributes
              .setDataSource(dataSource)
              .setProductInput(
                  ProductInput.newBuilder()
                      .setName(name)
                      .setProductAttributes(attributes)
                      .addCustomAttributes(
                          CustomAttribute.newBuilder()
                              .setName("mycustomattribute")
                              .setValue("Example value")
                              .build())
                      .build())
              .build();

      System.out.println("Sending update ProductInput request");
      ProductInput response = productInputsServiceClient.updateProductInput(request);
      System.out.println("Updated ProductInput Name below");
      // The last part of the product name will be the product ID assigned to a product by Google.
      // Product ID has the format `contentLanguage~feedLabel~offerId`
      System.out.println(response.getName());
      System.out.println("Updated Product below");
      System.out.println(response);
    } catch (Exception e) {
      System.out.println(e);
    }
  }

  public static void main(String[] args) throws Exception {
    Config config = Config.load();
    // An ID assigned to a product by Google. In the format
    // contentLanguage~feedLabel~offerId
    String productId = "en~label~sku123"; // Replace with your product ID.

    // Identifies the data source that will own the product input.
    String dataSourceId = "{INSERT_DATASOURCE_ID}"; // Replace with your datasource ID.

    updateProductInput(config, productId, dataSourceId);
  }
}
UpdateProductInputSample.java

use Google\ApiCore\ApiException;
use Google\Protobuf\FieldMask;
use Google\Shopping\Merchant\Products\V1\Availability;
use Google\Shopping\Merchant\Products\V1\Condition;
use Google\Shopping\Merchant\Products\V1\ProductAttributes;
use Google\Shopping\Merchant\Products\V1\Client\ProductInputsServiceClient;
use Google\Shopping\Merchant\Products\V1\ProductInput;
use Google\Shopping\Merchant\Products\V1\UpdateProductInputRequest;
use Google\Shopping\Type\CustomAttribute;

/**
 * This class demonstrates how to update a product input.
 */
class UpdateProductInputSample
{
    // An ID assigned to a product by Google. In the format
    // contentLanguage~feedLabel~offerId
    // Please ensure this product ID exists for the update to succeed.
    private const PRODUCT_ID = "online~en~label~sku123";

    // Identifies the data source that will own the product input.
    // Please ensure this data source ID exists.
    private const DATASOURCE_ID = "<INSERT_DATASOURCE_ID>";

    /**
     * Helper function to construct the full product input resource name.
     *
     * @param string $accountId The merchant account ID.
     * @param string $productInputId The product input ID (e.g., "online~en~label~sku123").
     * @return string The full product input resource name.
     */
    private static function getProductInputName(string $accountId, string $productInputId): string
    {
        return sprintf("accounts/%s/productInputs/%s", $accountId, $productInputId);
    }

    /**
     * Helper function to construct the full data source resource name.
     *
     * @param string $accountId The merchant account ID.
     * @param string $dataSourceId The data source ID.
     * @return string The full data source resource name.
     */
    private static function getDataSourceName(string $accountId, string $dataSourceId): string
    {
        return sprintf("accounts/%s/dataSources/%s", $accountId, $dataSourceId);
    }

    /**
     * Updates an existing product input in your Merchant Center account.
     *
     * @param array $config The configuration array containing the account ID.
     * @param string $productId The ID of the product input to update.
     * @param string $dataSourceId The ID of the data source.
     */
    public static function updateProductInput(
        array $config,
        string $productId,
        string $dataSourceId
    ): void {
        // Gets the OAuth credentials to make the request.
        $credentials = Authentication::useServiceAccountOrTokenFile();

        // Creates options config containing credentials for the client to use.
        $options = ['credentials' => $credentials];

        // Creates a ProductInputsServiceClient.
        $productInputsServiceClient = new ProductInputsServiceClient($options);

        // Construct the full resource name of the product input to be updated.
        $name = self::getProductInputName($config['accountId'], $productId);

        // Define the FieldMask to specify which fields to update.
        // Only 'attributes' and 'custom_attributes' can be specified in the
        // FieldMask for product input updates.
        $fieldMask = new FieldMask([
            'paths' => [
                "product_attributes.title",
                "product_attributes.description",
                "product_attributes.link",
                "product_attributes.image_link",
                "product_attributes.availability",
                "product_attributes.condition",
                "product_attributes.gtin",
                "custom_attributes.mycustomattribute" // Path for a specific custom attribute
            ]
        ]);

        // Calls the API and handles any network failures or errors.
        try {
            // Define the new attributes for the product.
            $attributes = new ProductAttributes([
                'title' => 'A Tale of Two Cities 3',
                'description' => 'A classic novel about the French Revolution',
                'link' => 'https://exampleWebsite.com/tale-of-two-cities.html',
                'image_link' => 'https://exampleWebsite.com/tale-of-two-cities.jpg',
                'availability' => Availability::IN_STOCK,
                'condition' => Condition::PBNEW,
                'gtins' => ['9780007350896'] // GTIN is a repeated field.
            ]);

            // Construct the full data source name.
            // This specifies the data source context for the update.
            $dataSource = self::getDataSourceName($config['accountId'], $dataSourceId);

            // Create the ProductInput object with the desired updates.
            // The 'name' field must match the product input being updated.
            $productInput = new ProductInput([
                'name' => $name,
                'product_attributes' => $attributes,
                'custom_attributes' => [ // Provide the list of custom attributes.
                    new CustomAttribute([
                        'name' => 'mycustomattribute',
                        'value' => 'Example value'
                    ])
                ]
            ]);

            // Create the UpdateProductInputRequest.
            $request = new UpdateProductInputRequest([
                'update_mask' => $fieldMask,
                'data_source' => $dataSource,
                'product_input' => $productInput
            ]);

            print "Sending update ProductInput request\n";
            // Make the API call to update the product input.
            $response = $productInputsServiceClient->updateProductInput($request);

            print "Updated ProductInput Name below\n";
            // The name of the updated product input.
            // The last part of the product name is the product ID (e.g., contentLanguage~feedLabel~offerId).
            print $response->getName() . "\n";
            print "Updated Product below\n";
            // Print the full updated product input object.
            print_r($response);

        } catch (ApiException $e) {
            printf("ApiException caught: %s\n", $e->getMessage());
        }
    }

    /**
     * Executes the UpdateProductInput sample.
     */
    public function callSample(): void
    {
        $config = Config::generateConfig();
        $productId = self::PRODUCT_ID;
        $dataSourceId = self::DATASOURCE_ID;

        self::updateProductInput($config, $productId, $dataSourceId);
    }
}

// Run the script.
$sample = new UpdateProductInputSample();
$sample->callSample();
UpdateProductInputSample.php

"""A module to update a product input."""

from examples.authentication import configuration
from examples.authentication import generate_user_credentials
from google.protobuf import field_mask_pb2
from google.shopping.merchant_products_v1 import Availability
from google.shopping.merchant_products_v1 import Condition
from google.shopping.merchant_products_v1 import ProductAttributes
from google.shopping.merchant_products_v1 import ProductInput
from google.shopping.merchant_products_v1 import ProductInputsServiceClient
from google.shopping.merchant_products_v1 import UpdateProductInputRequest
from google.shopping.type import CustomAttribute


# Fetches the Merchant Center account ID from the authentication examples.
# This ID is needed to construct resource names for the API.
_ACCOUNT_ID = configuration.Configuration().read_merchant_info()


def update_product_input(account_id: str, product_id: str, data_source_id: str):
  """Updates an existing product input for a specific account.

  Args:
    account_id: The Merchant Center account ID.
    product_id: The ID of the product input to update. This ID is assigned by
      Google and has the format `contentLanguage~feedLabel~offerId`.
    data_source_id: The ID of the data source that owns the product input.
  """

  # Obtains OAuth credentials for authentication.
  credentials = generate_user_credentials.main()

  # Creates a ProductInputsServiceClient instance.
  client = ProductInputsServiceClient(credentials=credentials)

  # Constructs the full resource name for the product input.
  # Format: accounts/{account}/productInputs/{productinput}
  name = f"accounts/{account_id}/productInputs/{product_id}"

  # Defines the FieldMask to specify which fields of the product input
  # are being updated. Only 'attributes' and 'custom_attributes' can be updated.
  field_mask = field_mask_pb2.FieldMask(
      paths=[
          "product_attributes.title",
          "product_attributes.description",
          "product_attributes.link",
          "product_attributes.image_link",
          "product_attributes.availability",
          "product_attributes.condition",
          "product_attributes.gtins",
          "custom_attributes.mycustomattribute",
      ]
  )

  # Prepares the new attribute values for the product.
  attributes = ProductAttributes(
      title="A Tale of Two Cities updated",
      description="A classic novel about the French Revolution",
      link="https://exampleWebsite.com/tale-of-two-cities.html",
      image_link="https://exampleWebsite.com/tale-of-two-cities.jpg",
      availability=Availability.IN_STOCK,
      condition=Condition.NEW,
      gtins=["9780007350896"],  # GTIN is a repeated field.
  )

  # Constructs the full resource name for the data source.
  # The data source can be primary or supplemental.
  # Format: accounts/{account}/dataSources/{datasource}
  data_source = f"accounts/{account_id}/dataSources/{data_source_id}"

  # Prepares the ProductInput object with the updated information.
  product_input_data = ProductInput(
      name=name,
      product_attributes=attributes,
      custom_attributes=[
          CustomAttribute(
              name="mycustomattribute", value="Example value"
          )
      ],
  )

  # Creates the UpdateProductInputRequest.
  request = UpdateProductInputRequest(
      update_mask=field_mask,
      data_source=data_source,
      product_input=product_input_data,
  )

  # Sends the update request to the API.
  try:
    print("Sending update ProductInput request")
    response = client.update_product_input(request=request)
    print("Updated ProductInput Name below")
    # The response includes the name of the updated product input.
    # The last part of the product name is the product ID assigned by Google.
    print(response.name)
    print("Updated Product below")
    print(response)
  except RuntimeError as e:
    # Catches and prints any errors that occur during the API call.
    print(e)


if __name__ == "__main__":
  # The ID of the product to be updated.
  # This ID is assigned by Google and typically follows the format:
  # contentLanguage~feedLabel~offerId
  # Replace with an actual product ID from your Merchant Center account.
  product_id_to_update = "online~en~label~sku123"

  # The ID of the data source that will own the updated product input.
  # Replace with an actual data source ID from your Merchant Center account.
  data_source_id_for_update = "<INSERT_DATA_SOURCE_ID>"

  update_product_input(
      _ACCOUNT_ID, product_id_to_update, data_source_id_for_update
  )
update_product_input_sample.py

curl --location --request PATCH 'https://merchantapi.googleapis.com/products/v1/accounts/{ACCOUNT_ID}/productInputs/en~US~SKU12345?updateMask=productAttributes.title,productAttributes.description&dataSource=accounts/{ACCOUNT_ID}/dataSources/{DATASOURCE_ID}' \
--header 'Authorization: Bearer <API_TOKEN>' \
--header 'Content-Type: application/json' \
--data '{
   "productAttributes": {
       "title": "A Tale of Two Cities",
       "description": "A classic novel about the French Revolution"
   }
}'