@ydbjs/topic/dist/reader/_topics_config.js

YDB Topics client for publish-subscribe messaging. Provides at-least-once delivery, exactly-once publishing, FIFO guarantees, and scalable message processing for unstructured data.

import { create, protoInt64 } from "@bufbuild/protobuf";
import { DurationSchema, timestampFromDate } from "@bufbuild/protobuf/wkt";
import { StreamReadMessage_InitRequest_TopicReadSettingsSchema } from "@ydbjs/api/topic";
import ms from "ms";
export let _parse_topics_read_settings = function parse_topics_read_settings(topic) {
    let settings = [];
    let parseDuration = function parseDuration(duration) {
        if (typeof duration === 'string') {
            duration = ms(duration);
        }
        if (typeof duration === 'number') {
            let seconds = Math.floor(duration / 1000);
            return create(DurationSchema, {
                seconds: protoInt64.parse(seconds),
                nanos: (duration - seconds * 1000) * 1_000_000,
            });
        }
        return duration;
    };
    let parseTimestamp = function parseTimestamp(timestamp) {
        if (typeof timestamp === 'number') {
            timestamp = new Date(timestamp);
        }
        if (timestamp instanceof Date) {
            timestamp = timestampFromDate(timestamp);
        }
        return timestamp;
    };
    if (typeof topic === "string") {
        settings.push(create(StreamReadMessage_InitRequest_TopicReadSettingsSchema, {
            path: topic
        }));
    }
    else if (!Array.isArray(topic)) {
        topic = [topic];
    }
    if (Array.isArray(topic)) {
        for (let topicSource of topic) {
            settings.push(create(StreamReadMessage_InitRequest_TopicReadSettingsSchema, {
                path: topicSource.path,
                ...(topicSource.maxLag && { maxLag: parseDuration(topicSource.maxLag) }),
                ...(topicSource.readFrom && { readFrom: parseTimestamp(topicSource.readFrom) }),
                ...(topicSource.partitionIds && { partitionIds: topicSource.partitionIds }),
            }));
        }
    }
    return settings;
};
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