31 lines
986 B
TypeScript
31 lines
986 B
TypeScript
import { GetObjectCommand } from "@aws-sdk/client-s3"
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import { s3 } from "./s3"
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import { secrets } from "./secrets"
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export const streamToBuffer = async (stream: any, maxBytes = Infinity): Promise<Buffer> => {
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const chunks: Buffer[] = []
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let size = 0
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for await (const chunk of stream) {
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const buffer = Buffer.isBuffer(chunk) ? chunk : Buffer.from(chunk)
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size += buffer.length
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if (size > maxBytes) throw new Error("Die Datei ist für Base64 zu groß. Bitte den Download mit format: url verwenden.")
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chunks.push(buffer)
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}
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return Buffer.concat(chunks)
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}
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export const loadFileBuffer = async (path: string, maxBytes = Infinity): Promise<Buffer> => {
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const response = await s3.send(new GetObjectCommand({
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Bucket: secrets.S3_BUCKET,
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Key: path,
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}))
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if (!response.Body) {
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throw new Error(`S3-Datei '${path}' enthält keinen lesbaren Inhalt.`)
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}
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return streamToBuffer(response.Body, maxBytes)
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}
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