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How to use prepare_transact_write_item_records method in localstack

Best Python code snippet using localstack_python

dynamodb_listener.py

Source:dynamodb_listener.py

...155                record['dynamodb']['SizeBytes'] = len(json.dumps(updated_item))156        elif action == '%s.BatchWriteItem' % ACTION_PREFIX:157            records = self.prepare_batch_write_item_records(record, data)158        elif action == '%s.TransactWriteItems' % ACTION_PREFIX:159            records = self.prepare_transact_write_item_records(record, data)160        elif action == '%s.PutItem' % ACTION_PREFIX:161            if response.status_code == 200:162                existing_item = self._thread_local('existing_item')163                record['eventName'] = 'INSERT' if not existing_item else 'MODIFY'164                keys = dynamodb_extract_keys(item=data['Item'], table_name=data['TableName'])165                if isinstance(keys, Response):166                    return keys167                record['dynamodb']['Keys'] = keys168                record['dynamodb']['NewImage'] = data['Item']169                record['dynamodb']['SizeBytes'] = len(json.dumps(data['Item']))170                if existing_item:171                    record['dynamodb']['OldImage'] = existing_item172        elif action == '%s.GetItem' % ACTION_PREFIX:173            if response.status_code == 200:174                content = json.loads(to_str(response.content))175                # make sure we append 'ConsumedCapacity', which is properly176                # returned by dynalite, but not by AWS's DynamoDBLocal177                if 'ConsumedCapacity' not in content and data.get('ReturnConsumedCapacity') in ('TOTAL', 'INDEXES'):178                    content['ConsumedCapacity'] = {179                        'CapacityUnits': 0.5,  # TODO hardcoded180                        'TableName': data['TableName']181                    }182                    response._content = json.dumps(content)183                    fix_headers_for_updated_response(response)184        elif action == '%s.DeleteItem' % ACTION_PREFIX:185            if response.status_code == 200:186                old_item = self._thread_local('existing_item')187                record['eventName'] = 'REMOVE'188                record['dynamodb']['Keys'] = data['Key']189                record['dynamodb']['OldImage'] = old_item190        elif action == '%s.CreateTable' % ACTION_PREFIX:191            if 'StreamSpecification' in data:192                create_dynamodb_stream(data)193            event_publisher.fire_event(event_publisher.EVENT_DYNAMODB_CREATE_TABLE,194                payload={'n': event_publisher.get_hash(data['TableName'])})195            return196        elif action == '%s.DeleteTable' % ACTION_PREFIX:197            event_publisher.fire_event(event_publisher.EVENT_DYNAMODB_DELETE_TABLE,198                payload={'n': event_publisher.get_hash(data['TableName'])})199            return200        elif action == '%s.UpdateTable' % ACTION_PREFIX:201            if 'StreamSpecification' in data:202                create_dynamodb_stream(data)203            return204        else:205            # nothing to do206            return207        if len(records) > 0 and 'eventName' in records[0]:208            if 'TableName' in data:209                records[0]['eventSourceARN'] = aws_stack.dynamodb_table_arn(data['TableName'])210            forward_to_lambda(records)211            forward_to_ddb_stream(records)212    def prepare_batch_write_item_records(self, record, data):213        records = []214        i = 0215        for table_name in sorted(data['RequestItems'].keys()):216            for request in data['RequestItems'][table_name]:217                put_request = request.get('PutRequest')218                if put_request:219                    existing_item = self._thread_local('existing_items')[i]220                    keys = dynamodb_extract_keys(item=put_request['Item'], table_name=table_name)221                    if isinstance(keys, Response):222                        return keys223                    new_record = clone(record)224                    new_record['eventName'] = 'INSERT' if not existing_item else 'MODIFY'225                    new_record['dynamodb']['Keys'] = keys226                    new_record['dynamodb']['NewImage'] = put_request['Item']227                    if existing_item:228                        new_record['dynamodb']['OldImage'] = existing_item229                    new_record['eventSourceARN'] = aws_stack.dynamodb_table_arn(table_name)230                    records.append(new_record)231                delete_request = request.get('DeleteRequest')232                if delete_request:233                    keys = delete_request['Key']234                    if isinstance(keys, Response):235                        return keys236                    new_record = clone(record)237                    new_record['eventName'] = 'REMOVE'238                    new_record['dynamodb']['Keys'] = keys239                    new_record['dynamodb']['OldImage'] = self._thread_local('existing_items')[i]240                    new_record['eventSourceARN'] = aws_stack.dynamodb_table_arn(table_name)241                    records.append(new_record)242                i += 1243        return records244    def prepare_transact_write_item_records(self, record, data):245        records = []246        for i, request in enumerate(data['TransactItems']):247            put_request = request.get('Put')248            if put_request:249                existing_item = self._thread_local('existing_items')[i]250                table_name = put_request['TableName']251                keys = dynamodb_extract_keys(item=put_request['Item'], table_name=table_name)252                if isinstance(keys, Response):253                    return keys254                new_record = clone(record)255                new_record['eventName'] = 'INSERT' if not existing_item else 'MODIFY'256                new_record['dynamodb']['Keys'] = keys257                new_record['dynamodb']['NewImage'] = put_request['Item']258                if existing_item:...

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