n8n/packages/nodes-base/nodes/ReadBinaryFiles.node.ts
2019-07-26 11:41:08 +02:00

81 lines
1.9 KiB
TypeScript

import { IExecuteFunctions } from 'n8n-core';
import {
INodeExecutionData,
INodeType,
INodeTypeDescription,
} from 'n8n-workflow';
import * as glob from 'glob-promise';
import * as path from 'path';
import {
readFile as fsReadFile,
} from 'fs';
import { promisify } from "util";
const fsReadFileAsync = promisify(fsReadFile);
export class ReadBinaryFiles implements INodeType {
description: INodeTypeDescription = {
displayName: 'Read Binary Files',
name: 'readBinaryFiles',
icon: 'fa:file-import',
group: ['input'],
version: 1,
description: 'Reads binary files from disk',
defaults: {
name: 'Read Binary Files',
color: '#44AA44',
},
inputs: ['main'],
outputs: ['main'],
properties: [
{
displayName: 'File Selector',
name: 'fileSelector',
type: 'string',
default: '',
required: true,
placeholder: '*.jpg',
description: 'Pattern for files to read.',
},
{
displayName: 'Property Name',
name: 'dataPropertyName',
type: 'string',
default: 'data',
required: true,
description: 'Name of the binary property to which to<br />write the data of the read files.',
},
]
};
async execute(this: IExecuteFunctions): Promise<INodeExecutionData[][]> {
const fileSelector = this.getNodeParameter('fileSelector', 0) as string;
const dataPropertyName = this.getNodeParameter('dataPropertyName', 0) as string;
const files = await glob(fileSelector);
const items: INodeExecutionData[] = [];
let item: INodeExecutionData;
let data: Buffer;
let fileName: string;
for (const filePath of files) {
data = await fsReadFileAsync(filePath) as Buffer;
fileName = path.parse(filePath).base;
item = {
binary: {
[dataPropertyName]: await this.helpers.prepareBinaryData(data, fileName)
},
json: {},
};
items.push(item);
}
return this.prepareOutputData(items);
}
}