azure-blob-transport v1.0.0

azure-blob-transport

This is a fork of winston-azure-storage-transport.

Azure Storage transports for winston >= 3.

Install

npm install winston azure-blob-transport

Usage

import { transports, createLogger, format } from 'winston';
import { BlobService } from 'azure-storage';
import { AzureBlobTransport } from 'azure-blob-transport';

const azureBlobTransport = new AzureBlobTransport({
  blobs: new BlobService(process.env['AzureWebJobsStorage'] || ''),
  containerName: 'mylogs',
  blobName: 'myappendblob'
});

const logger = createLogger({
  exitOnError: false,
  level: 'info',
  format: format.json(),
  transports: [new transports.Console({}), azureBlobTransport]
});

export { logger };

You can write logs 'silently' so that calls to the logger do not block the callback chain. In this case, listen for 'error' events on your AzureBlobTransport to handle IO errors.

const blobTransport = new AzureBlobTransport({
  blobs: new BlobService(),
  containerName: 'mylogs',
  blobName: 'myappendblob.log',
  silent: true,
}).on('error', console.error);

You can customize the blob name using a callback function. The blob will be created if it does not exist.

const blobTransport = new AzureBlobTransport({
  blobs: new BlobService(),
  containerName: 'mylogs',
  blobName: () => {
    const d = new Date();
    return [
      d.getFullYear(),
      d.getMonth() + 1,
      d.getDate(),
      'myappendblob.log',
    ].join('/');
  },
});