@aws-sdk/client-dynamodb
Version:
AWS SDK for JavaScript Dynamodb Client for Node.js, Browser and React Native
120 lines • 6.26 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.TransactWriteItemsCommand = void 0;
const models_0_1 = require("../models/models_0");
const Aws_json1_0_1 = require("../protocols/Aws_json1_0");
const middleware_serde_1 = require("@aws-sdk/middleware-serde");
const smithy_client_1 = require("@aws-sdk/smithy-client");
/**
* <p>
* <code>TransactWriteItems</code> is a synchronous write operation that groups up to 25
* action requests. These actions can target items in different tables, but not in
* different AWS accounts or Regions, and no two actions can target the same item. For
* example, you cannot both <code>ConditionCheck</code> and <code>Update</code> the same
* item. The aggregate size of the items in the transaction cannot exceed 4 MB.</p>
*
* <p>The actions are completed atomically so that either all of
* them succeed, or all of them fail. They are defined by the following objects:</p>
*
* <ul>
* <li>
* <p>
* <code>Put</code> Initiates a <code>PutItem</code> operation to write a new
* item. This structure specifies the primary key of the item to be written, the
* name of the table to write it in, an optional condition expression that must be
* satisfied for the write to succeed, a list of the item's attributes, and a field
* indicating whether to retrieve the item's attributes if the condition is not
* met.</p>
* </li>
* <li>
* <p>
* <code>Update</code> Initiates an <code>UpdateItem</code> operation to
* update an existing item. This structure specifies the primary key of the item to
* be updated, the name of the table where it resides, an optional condition
* expression that must be satisfied for the update to succeed, an expression that
* defines one or more attributes to be updated, and a field indicating whether to
* retrieve the item's attributes if the condition is not met.</p>
* </li>
* <li>
* <p>
* <code>Delete</code> Initiates a <code>DeleteItem</code> operation to
* delete an existing item. This structure specifies the primary key of the item to
* be deleted, the name of the table where it resides, an optional condition
* expression that must be satisfied for the deletion to succeed, and a field
* indicating whether to retrieve the item's attributes if the condition is not
* met.</p>
* </li>
* <li>
* <p>
* <code>ConditionCheck</code> Applies a condition to an item that is not
* being modified by the transaction. This structure specifies the primary key of
* the item to be checked, the name of the table where it resides, a condition
* expression that must be satisfied for the transaction to succeed, and a field
* indicating whether to retrieve the item's attributes if the condition is not
* met.</p>
* </li>
* </ul>
*
* <p>DynamoDB rejects the entire <code>TransactWriteItems</code> request if any of the following is true:</p>
* <ul>
* <li>
* <p>A condition in one of the condition expressions is not met.</p>
* </li>
* <li>
* <p>An ongoing operation is in the process of updating the same
* item.</p>
* </li>
* <li>
* <p>There is insufficient provisioned capacity for the transaction
* to be completed.</p>
* </li>
* <li>
* <p>An item size becomes too large (bigger than 400 KB), a local secondary index (LSI) becomes too
* large, or a similar validation error occurs because of changes made by the
* transaction.</p>
* </li>
* <li>
* <p>The aggregate size of the items in the transaction exceeds 4 MB.</p>
* </li>
* <li>
* <p>There is a user error, such as an invalid data format.</p>
* </li>
* </ul>
*/
class TransactWriteItemsCommand extends smithy_client_1.Command {
// Start section: command_properties
// End section: command_properties
constructor(input) {
// Start section: command_constructor
super();
this.input = input;
// End section: command_constructor
}
/**
* @internal
*/
resolveMiddleware(clientStack, configuration, options) {
this.middlewareStack.use(middleware_serde_1.getSerdePlugin(configuration, this.serialize, this.deserialize));
const stack = clientStack.concat(this.middlewareStack);
const { logger } = configuration;
const clientName = "DynamoDBClient";
const commandName = "TransactWriteItemsCommand";
const handlerExecutionContext = {
logger,
clientName,
commandName,
inputFilterSensitiveLog: models_0_1.TransactWriteItemsInput.filterSensitiveLog,
outputFilterSensitiveLog: models_0_1.TransactWriteItemsOutput.filterSensitiveLog,
};
const { requestHandler } = configuration;
return stack.resolve((request) => requestHandler.handle(request.request, options || {}), handlerExecutionContext);
}
serialize(input, context) {
return Aws_json1_0_1.serializeAws_json1_0TransactWriteItemsCommand(input, context);
}
deserialize(output, context) {
return Aws_json1_0_1.deserializeAws_json1_0TransactWriteItemsCommand(output, context);
}
}
exports.TransactWriteItemsCommand = TransactWriteItemsCommand;
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