@seasketch/geoprocessing/dist/src/aws/dynamodb/scanTasks.js

Geoprocessing and reporting framework for SeaSketch 2.0

import { paginateScan, } from "@aws-sdk/lib-dynamodb";
export function scanTasks(
/** DynamoDB Document client */
docClient, 
/** Task table name */
tableName, 
/** Optional serviceName to filter by */
serviceName) {
    // Get all task keys.
    const paginatorConfig = {
        client: docClient,
        pageSize: 25,
    };
    let query = {
        TableName: tableName,
        ProjectionExpression: "id, service",
    };
    if (serviceName && serviceName !== "all") {
        query = {
            TableName: tableName,
            ProjectionExpression: "id, service",
            FilterExpression: "service = :serviceName OR begins_with(service, :serviceNameChunked)",
            ExpressionAttributeValues: {
                ":serviceName": serviceName,
                ":serviceNameChunked": `${serviceName}-chunk`,
            },
        };
    }
    // Pager will return a variable number of items, up to 1MB of data
    const pager = paginateScan(paginatorConfig, query);
    return pager;
}
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