awscdk-construct-scte-scheduler/lib/code/index.js

AWS CDK Construct for scheduling SCTE-35 events using the MediaLive schedule API

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.handler = handler;
const client_medialive_1 = require("@aws-sdk/client-medialive");
const client = new client_medialive_1.MediaLiveClient({ region: process.env.REGION });
const CHANNEL_ID = process.env.CHANNEL_ID;
const OFFSET = 30;
const AVAIL_LENGTH = process.env.AVAIL_LENGTH;
// Lambda function to insert SCTE-35 splice_insert() message using the MediaLive schedule API
async function handler(event) {
    await deleteSchedules();
    const startTime = new Date(Date.now() + (OFFSET * 1000));
    await scheduleEvent(Math.floor(startTime.getTime() / 1000), startTime);
    return { i: event.i + 1 };
}
function deleteSchedules() {
    const command = new client_medialive_1.DeleteScheduleCommand({ ChannelId: CHANNEL_ID });
    return client.send(command);
}
async function scheduleEvent(eventId, start) {
    const scte = createScteCommand(eventId, start, AVAIL_LENGTH);
    const command = new client_medialive_1.BatchUpdateScheduleCommand({ ChannelId: CHANNEL_ID, Creates: scte });
    const response = await client.send(command);
    console.log(JSON.stringify(response, null, 2));
}
function createScteCommand(eventId, start, durationInSeconds) {
    return {
        ScheduleActions: [
            {
                ActionName: `SCTE35_splice-insert_${eventId}`,
                ScheduleActionSettings: {
                    Scte35SpliceInsertSettings: {
                        SpliceEventId: eventId,
                        Duration: durationInSeconds * 90000, // 90kHz
                    },
                },
                ScheduleActionStartSettings: {
                    FixedModeScheduleActionStartSettings: {
                        Time: start.toISOString(),
                    },
                },
            },
        ],
    };
}
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