log4js-azure-append-blob-appender

Write log to Microsoft Azure Storage (append blob)

You should known when use this appender

• if Azure Storage blob container do not exist, create it
• if Azure Storage blob do not exist, create it
• Check blob properties when writing text to the blob for the first time
• This appender will append EOL symbol for every write operation, so you can view log file line by line
• By default, this appender use basic log4js layout

Getting Started

installation

npm install log4js --save
npm install log4js-azure-append-blob-appender --save

usage:

This appender is compitable with log4js configuration file. for example, in your log4js configuration file (log4js.cfg.json)

{
    "appenders": [
        {
            "type": "console"
        },
        {
            "type": "log4js-azure-append-blob-appender",
            "category": "YOUR_CATEGORY",
            "azureStorageConnectionString": "DefaultEndpointsProtocol=https;AccountName=YOUR_ACCOUNT;AccountKey=YOUR_KEY",
            "container": "log4test",
            "appendBlob": "my.log",
            "layout": {
              "type":"basic"
            }
        }
    ],
    "replaceConsole": true
}

    var log4js = require('log4js');
    var cfg = require("./log4js.cfg.json");
    log4js.configure(cfg);
    
    var log = log4js.getLogger("YOUR_CATEGORY");
    
    log.debug("my msg", "data1");
    

About Configuration

Required configuration item

• type
• azureStorageConnectionString
• container
• appendBlob

Best Practice about this appender

Write json (instead of plain text) as every log line, so you can do more things (eg. use HDInsight to analyse log)

• log4js-json-layout

Update log

• 1.0.1 (June 07 2016)
  • improve test
  • add gemfury version tag in readme.md
• 1.0.0 (June 06 2016)
  • azure append validation
  • add test, improve readme
• 0.0.1 (June 02 2016)
  • basic appender implement