duenamodb
Version:
Simple, strongly-typed helpers around the AWS SDK DynamoDB client.
55 lines • 2.01 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.scanItems = exports.createScanOptions = exports.createScanItems = void 0;
const client_dynamodb_1 = require("@aws-sdk/client-dynamodb");
const util_dynamodb_1 = require("@aws-sdk/util-dynamodb");
const client_1 = require("./client");
const expression_1 = require("./expression");
const createScanItems = (options) => {
const { tablename } = options;
return ({ filter, dynamodbOptions } = {}) => {
const scanOptions = (0, exports.createScanOptions)(filter);
return (0, exports.scanItems)(tablename, {
...scanOptions,
...dynamodbOptions,
});
};
};
exports.createScanItems = createScanItems;
const createScanOptions = (filter) => {
if (!filter || Object.keys(filter).length === 0) {
return {};
}
const { attributeNames: filterNames, attributeValues: filterValues, expression: filterExpression, } = (0, expression_1.createConditionExpression)(filter);
return {
ExpressionAttributeValues: { ...(0, util_dynamodb_1.marshall)(filterValues) },
ExpressionAttributeNames: { ...filterNames },
FilterExpression: filterExpression,
};
};
exports.createScanOptions = createScanOptions;
const scanItems = async (tablename, options) => {
const command = new client_dynamodb_1.ScanCommand({
...options,
TableName: tablename,
});
const res = await client_1.DDBClient.instance.send(command);
if (res.$metadata.httpStatusCode !== 200) {
throw res;
}
if (!res.Items) {
return [];
}
const paginatedResults = res.LastEvaluatedKey
? await (0, exports.scanItems)(tablename, {
...options,
ExclusiveStartKey: res.LastEvaluatedKey,
})
: [];
return [
...paginatedResults,
...res.Items.map((item) => (0, util_dynamodb_1.unmarshall)(item)),
];
};
exports.scanItems = scanItems;
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