| 1 | import * as AWS from "@/AWS"; |
| 2 | import * as Context from "effect/Context"; |
| 3 | import * as Effect from "effect/Effect"; |
| 4 | import * as Layer from "effect/Layer"; |
| 5 | import * as Stream from "effect/Stream"; |
| 6 | import * as HttpServerResponse from "effect/http/HttpServerResponse"; |
| 7 | |
| 8 | export class KinesisStreamFunction extends AWS.Lambda.Function<AWS.Lambda.Function>()( |
| 9 | "KinesisStreamFunction", |
| 10 | ) {} |
| 11 | |
| 12 | export class StreamAndQueue extends Context.Service< |
| 13 | StreamAndQueue, |
| 14 | { |
| 15 | stream: AWS.Kinesis.Stream; |
| 16 | queue: AWS.SQS.Queue; |
| 17 | } |
| 18 | >()("StreamAndQueue") {} |
| 19 | |
| 20 | export const StreamAndQueueLive = Layer.effect( |
| 21 | StreamAndQueue, |
| 22 | Effect.gen(function* () { |
| 23 | const stream = yield* AWS.Kinesis.Stream("EventSourceStream", { |
| 24 | streamMode: "PROVISIONED", |
| 25 | shardCount: 1, |
| 26 | }); |
| 27 | const queue = yield* AWS.SQS.Queue("KinesisEventSinkQueue"); |
| 28 | |
| 29 | return { |
| 30 | stream, |
| 31 | queue, |
| 32 | }; |
| 33 | }), |
| 34 | ); |
| 35 | export default KinesisStreamFunction.make( |
| 36 | { |
| 37 | main: import.meta.url, |
| 38 | functionUrl: true, |
| 39 | }, |
| 40 | Effect.gen(function* () { |
| 41 | const { stream, queue } = yield* StreamAndQueue; |
| 42 | const sink = yield* AWS.SQS.QueueSink(queue); |
| 43 | |
| 44 | yield* AWS.Kinesis.consumeStreamRecords( |
| 45 | stream, |
| 46 | { |
| 47 | startingPosition: "LATEST", |
| 48 | batchSize: 10, |
| 49 | }, |
| 50 | (records) => |
| 51 | records.pipe( |
| 52 | Stream.map((record) => ({ |
| 53 | MessageBody: JSON.stringify({ |
| 54 | partitionKey: record.kinesis.partitionKey, |
| 55 | data: Buffer.from(record.kinesis.data, "base64").toString("utf8"), |
| 56 | eventID: record.eventID, |
| 57 | }), |
| 58 | })), |
| 59 | Stream.run(sink), |
| 60 | Effect.orDie, |
| 61 | ), |
| 62 | ); |
| 63 | |
| 64 | const streamName = yield* stream.streamName; |
| 65 | const streamArn = yield* stream.streamArn; |
| 66 | const queueUrl = yield* queue.queueUrl; |
| 67 | |
| 68 | return { |
| 69 | fetch: Effect.gen(function* () { |
| 70 | return yield* HttpServerResponse.json({ |
| 71 | ok: true, |
| 72 | streamArn: yield* streamArn, |
| 73 | streamName: yield* streamName, |
| 74 | queueUrl: yield* queueUrl, |
| 75 | }); |
| 76 | }), |
| 77 | }; |
| 78 | }).pipe( |
| 79 | Effect.provide( |
| 80 | Layer.provideMerge( |
| 81 | Layer.mergeAll(AWS.Lambda.StreamEventSource, AWS.SQS.QueueSinkHttp), |
| 82 | Layer.mergeAll(AWS.SQS.SendMessageBatchHttp, StreamAndQueueLive), |
| 83 | ), |
| 84 | ), |
| 85 | ), |
| 86 | ); |