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28 lines
785 B
TypeScript
28 lines
785 B
TypeScript
import type { IExecuteFunctions } from 'n8n-workflow';
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/** Chunk size to use for streaming. 256Kb */
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const CHUNK_SIZE = 256 * 1024;
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/**
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* Gets the binary data file for the given item index and given property name.
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* Returns the file name, content type and the file content. Uses streaming
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* when possible.
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*/
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export async function getBinaryDataFile(
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ctx: IExecuteFunctions,
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itemIdx: number,
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binaryPropertyName: string,
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) {
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const binaryData = ctx.helpers.assertBinaryData(itemIdx, binaryPropertyName);
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const fileContent = binaryData.id
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? await ctx.helpers.getBinaryStream(binaryData.id, CHUNK_SIZE)
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: await ctx.helpers.getBinaryDataBuffer(itemIdx, binaryPropertyName);
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return {
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filename: binaryData.fileName,
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contentType: binaryData.mimeType,
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fileContent,
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};
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}
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