Change Status Service

Change Status provides a means to keep track of changes to an account, such as campaigns and ads, over a given time period. This can be used for a multitude of purposes, for example: keeping synchronized with a local copy, simple auditing, or ensuring than an automated process is performing as expected.

Change Status Types

The Change Service currently tracks changes of the following resource types:

Resource Type Value
Ad groups AD_GROUP
Ad group ads AD_GROUP_AD
Ad group criteria AD_GROUP_CRITERION
Campaigns CAMPAIGN
Campaign criteria CAMPAIGN_CRITERION

Tracking of additional resource types will be available in the future.

Getting changes

The list of changes can be filtered by date as well as by resource type. The operation on a given resource will be one of ADDED, CHANGED, or REMOVED.

It is possible to retrieve the list of all changes for all resource types. The returned resource_type is the field that changed. Any parent fields are also populated. For example, if the ad_group_criterion changed, then the ad_group field will also be populated.

Java

private void runExample(GoogleAdsClient googleAdsClient, long customerId) {
  String query =
      "SELECT change_status.resource_name, "
          + "change_status.last_change_date_time, "
          + "change_status.resource_type, "
          + "change_status.campaign, "
          + "change_status.ad_group, "
          + "change_status.resource_status, "
          + "change_status.ad_group_ad, "
          + "change_status.ad_group_criterion, "
          + "change_status.campaign_criterion "
          + "FROM change_status "
          + "WHERE change_status.last_change_date_time DURING LAST_7_DAYS "
          + "ORDER BY change_status.last_change_date_time";

  try (GoogleAdsServiceClient client = googleAdsClient.getLatestVersion().createGoogleAdsServiceClient()) {
    SearchPagedResponse response = client.search(String.valueOf(customerId), query);

    for (GoogleAdsRow row : response.iterateAll()) {
      Optional<String> resourceNameOfChangedEntity =
          getResourceNameForResourceType(row.getChangeStatus());

      System.out.printf(
          "On '%s', change status '%s' shows a resource type of '%s' "
              + "with resource name '%s' was '%s'.%n",
          row.getChangeStatus().getLastChangeDateTime().getValue(),
          row.getChangeStatus().getResourceName(),
          row.getChangeStatus().getResourceType().name(),
          resourceNameOfChangedEntity.orElse(""),
          row.getChangeStatus().getResourceStatus().name());
    }
  }
}

C#

public void Run(GoogleAdsClient client, long customerId)
{
    // Get the GoogleAdsService.
    GoogleAdsServiceClient googleAdsService = client.GetService(
        Services.V1.GoogleAdsService);

    string searchQuery = "SELECT change_status.resource_name, " +
        "change_status.last_change_date_time, change_status.resource_type, " +
        "change_status.campaign, change_status.ad_group, change_status.resource_status, " +
        "change_status.ad_group_ad, change_status.ad_group_criterion, " +
        "change_status.campaign_criterion FROM change_status " +
        "WHERE change_status.last_change_date_time DURING LAST_7_DAYS " +
        "ORDER BY change_status.last_change_date_time";

    // Create a request that will retrieve all changes using pages of the specified
    // page size.
    SearchGoogleAdsRequest request = new SearchGoogleAdsRequest()
    {
        PageSize = PAGE_SIZE,
        Query = searchQuery,
        CustomerId = customerId.ToString()
    };

    try
    {
        // Issue the search request.
        PagedEnumerable<SearchGoogleAdsResponse, GoogleAdsRow> searchPagedResponse =
            googleAdsService.Search(request);

        // Iterate over all rows in all pages and prints the requested field values for the
        // campaign in each row.
        foreach (GoogleAdsRow googleAdsRow in searchPagedResponse)
        {
            Console.WriteLine("Last change: {0}, Resource type: {1}, " +
                "Resource name: {2}, Resource status: {3}, Specific resource name: {4}",
                googleAdsRow.ChangeStatus.LastChangeDateTime,
                googleAdsRow.ChangeStatus.ResourceType,
                googleAdsRow.ChangeStatus.ResourceName,
                googleAdsRow.ChangeStatus.ResourceStatus,
                SpecificResourceName(googleAdsRow.ChangeStatus.ResourceType,
                    googleAdsRow));
        }
    }
    catch (GoogleAdsException e)
    {
        Console.WriteLine("Failure:");
        Console.WriteLine($"Message: {e.Message}");
        Console.WriteLine($"Failure: {e.Failure}");
        Console.WriteLine($"Request ID: {e.RequestId}");
    }
}

/// <summary>
/// Return the name of the most specific resource that changed.
/// </summary>
/// <param name="resourceType">Type of the resource.</param>
/// <param name="row">Each returned row contains all possible changed fields</param>
/// <returns>The resource name of the changed field based on the resource type.
/// The changed field's parent is also populated, but is not used.</returns>
string SpecificResourceName(ChangeStatusResourceType resourceType, GoogleAdsRow row)
{
    string resourceName = "";

    switch (resourceType)
    {
        case ChangeStatusResourceType.AdGroup:
            resourceName = row.ChangeStatus.AdGroup;
            break;

        case ChangeStatusResourceType.AdGroupAd:
            resourceName = row.ChangeStatus.AdGroupAd;
            break;

        case ChangeStatusResourceType.AdGroupCriterion:
            resourceName = row.ChangeStatus.AdGroupCriterion;
            break;

        case ChangeStatusResourceType.Campaign:
            resourceName = row.ChangeStatus.Campaign;
            break;

        case ChangeStatusResourceType.CampaignCriterion:
            resourceName = row.ChangeStatus.CampaignCriterion;
            break;

        case ChangeStatusResourceType.Unknown:
        case ChangeStatusResourceType.Unspecified:
        default:
            resourceName = "";
            break;
    }
    return resourceName;
}

PHP

public static function runExample(GoogleAdsClient $googleAdsClient, $customerId)
{
    $googleAdsServiceClient = $googleAdsClient->getGoogleAdsServiceClient();
    // Creates a query that retrieves all change statuses.
    $query = 'SELECT change_status.resource_name, '
       . 'change_status.last_change_date_time, '
       . 'change_status.resource_type, '
       . 'change_status.campaign, '
       . 'change_status.ad_group, '
       . 'change_status.resource_status, '
       . 'change_status.ad_group_ad, '
       . 'change_status.ad_group_criterion, '
       . 'change_status.campaign_criterion '
       . 'FROM change_status '
       . 'WHERE change_status.last_change_date_time DURING LAST_7_DAYS '
       . 'ORDER BY change_status.last_change_date_time';

    // Issues a search request by specifying page size.
    $response =
        $googleAdsServiceClient->search($customerId, $query, ['pageSize' => self::PAGE_SIZE]);

    // Iterates over all rows in all pages and prints the requested field values for
    // the change status in each row.
    foreach ($response->iterateAllElements() as $googleAdsRow) {
        /** @var GoogleAdsRow $googleAdsRow */
        printf(
            "On %s, change status '%s' shows resource '%s' with type '%s' and status '%s'.%s",
            $googleAdsRow->getChangeStatus()->getLastChangeDateTimeValue(),
            $googleAdsRow->getChangeStatus()->getResourceName(),
            self::getResourceNameForResourceType($googleAdsRow->getChangeStatus()),
            ChangeStatusResourceType::name(
                $googleAdsRow->getChangeStatus()->getResourceType()
            ),
            ChangeStatusOperation::name($googleAdsRow->getChangeStatus()->getResourceStatus()),
            PHP_EOL
        );
    }
}

/**
 * Gets the resource name for the resource type of the change status object.
 *
 * Each returned row contains all possible changed resources, only one of which is populated
 * with the name of the changed resource. This function returns the resource name of the
 * changed resource based on the resource type.
 *
 * @param ChangeStatus $changeStatus the change status object for getting changed resource
 * @return string the name of the resource that changed
 */
private static function getResourceNameForResourceType(
    ChangeStatus $changeStatus
) {
    $resourceType = $changeStatus->getResourceType();
    $resourceName = ''; // Default value for UNSPECIFIED or UNKNOWN resource type.
    switch ($resourceType) {
        case ChangeStatusResourceType::AD_GROUP:
            $resourceName = $changeStatus->getAdGroupValue();
            break;
        case ChangeStatusResourceType::AD_GROUP_AD:
            $resourceName = $changeStatus->getAdGroupAdValue();
            break;
        case ChangeStatusResourceType::AD_GROUP_CRITERION:
            $resourceName = $changeStatus->getAdGroupCriterionValue();
            break;
        case ChangeStatusResourceType::CAMPAIGN:
            $resourceName = $changeStatus->getCampaignValue();
            break;
        case ChangeStatusResourceType::CAMPAIGN_CRITERION:
            $resourceName = $changeStatus->getCampaignCriterionValue();
            break;
    }

    return $resourceName;
}

Python

def resource_name_for_resource_type(resource_type, row):
  """Return the resource name for the resource type.

  Each returned row contains all possible changed fields. This function
  returns the resource name of the changed field based on the
  resource type. The changed field's parent is also populated but is not used.

  Args:
    resource_type: the string equivalent of the resource type
    row: a single row returned from the service

  Returns:
    The resource name of the field that changed.
  """
  resource_name = ''  # default for UNSPECIFIED or UNKNOWN
  if resource_type == 'AD_GROUP':
    resource_name = row.change_status.ad_group.value
  elif resource_type == 'AD_GROUP_AD':
    resource_name = row.change_status.ad_group_ad.value
  elif resource_type == 'AD_GROUP_CRITERION':
    resource_name = row.change_status.ad_group_criterion.value
  elif resource_type == 'CAMPAIGN':
    resource_name = row.change_status.campaign.value
  elif resource_type == 'CAMPAIGN_CRITERION':
    resource_name = row.change_status.campaign_criterion.value
  return resource_name

Keeping synchronized locally

Once the precise resource_name is retrieved, a new query with this resource name should be made to obtain all the current values of the resource. The Change Status Service does not track the specific resource's values that changed -- only which resources changed. Determining the difference between the prior and current values is the responsibility of the calling program.

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