The following code examples show how to use UpdateTable.
Action examples are code excerpts from larger programs and must be run in context. You can see this action in context in the following code example:
- SDK for C++
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Note
There's more on GitHub. Find the complete example and learn how to set up and run in the AWS Code Examples Repository
. //! Update a DynamoDB table. /*! \sa updateTable() \param tableName: Name for the DynamoDB table. \param readCapacity: Provisioned read capacity. \param writeCapacity: Provisioned write capacity. \param clientConfiguration: AWS client configuration. \return bool: Function succeeded. */ bool AwsDoc::DynamoDB::updateTable(const Aws::String &tableName, long long readCapacity, long long writeCapacity, const Aws::Client::ClientConfiguration &clientConfiguration) { Aws::DynamoDB::DynamoDBClient dynamoClient(clientConfiguration); std::cout << "Updating " << tableName << " with new provisioned throughput values" << std::endl; std::cout << "Read capacity : " << readCapacity << std::endl; std::cout << "Write capacity: " << writeCapacity << std::endl; Aws::DynamoDB::Model::UpdateTableRequest request; Aws::DynamoDB::Model::ProvisionedThroughput provisionedThroughput; provisionedThroughput.WithReadCapacityUnits(readCapacity).WithWriteCapacityUnits( writeCapacity); request.WithProvisionedThroughput(provisionedThroughput).WithTableName(tableName); const Aws::DynamoDB::Model::UpdateTableOutcome &outcome = dynamoClient.UpdateTable( request); if (outcome.IsSuccess()) { std::cout << "Successfully updated the table." << std::endl; } else { const Aws::DynamoDB::DynamoDBError &error = outcome.GetError(); if (error.GetErrorType() == Aws::DynamoDB::DynamoDBErrors::VALIDATION && error.GetMessage().find("The provisioned throughput for the table will not change") != std::string::npos) { std::cout << "The provisioned throughput for the table will not change." << std::endl; } else { std::cerr << outcome.GetError().GetMessage() << std::endl; return false; } } return waitTableActive(tableName, dynamoClient); }Code that waits for the table to become active.
//! Query a newly created DynamoDB table until it is active. /*! \sa waitTableActive() \param waitTableActive: The DynamoDB table's name. \param dynamoClient: A DynamoDB client. \return bool: Function succeeded. */ bool AwsDoc::DynamoDB::waitTableActive(const Aws::String &tableName, const Aws::DynamoDB::DynamoDBClient &dynamoClient) { // Repeatedly call DescribeTable until table is ACTIVE. const int MAX_QUERIES = 20; Aws::DynamoDB::Model::DescribeTableRequest request; request.SetTableName(tableName); int count = 0; while (count < MAX_QUERIES) { const Aws::DynamoDB::Model::DescribeTableOutcome &result = dynamoClient.DescribeTable( request); if (result.IsSuccess()) { Aws::DynamoDB::Model::TableStatus status = result.GetResult().GetTable().GetTableStatus(); if (Aws::DynamoDB::Model::TableStatus::ACTIVE != status) { std::this_thread::sleep_for(std::chrono::seconds(1)); } else { return true; } } else { std::cerr << "Error DynamoDB::waitTableActive " << result.GetError().GetMessage() << std::endl; return false; } count++; } return false; }-
For API details, see UpdateTable in AWS SDK for C++ API Reference.
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For a complete list of AWS SDK developer guides and code examples, see Using DynamoDB with an AWS SDK. This topic also includes information about getting started and details about previous SDK versions.
