ZaneRay Node Logging

• A wrapper around Winston
• Supports logging to Google StackDriver for deployed applications
• Provides logger 'Singleton' for convenience
• Provides configurable logging 'Singleton', to provide custom-configured loggers

Definitions

Environments

• development
• test
• staging
• production

Transports (transports.js)

• defines where to log in each Environment
• development->Console
• test->Google Stackdriver
• staging->Google Stackdriver
• production->Google Stackdriver

Options (options.js)

• defines how to log in each Environment
• development->Timstamp Level Message
• test->JSON
• staging->JSON
• production->JSON

Log Levels - from Winston

• 0: error
• 1: warn
• 2: info
• 3: verbose
• 4: debug
• 5: silly

Usage (see test/loggingTest.js)

in your node project

npm install --save @zaneray/gcp-node-logging

in your application code

const {logger} = require("@zaneray/gcp-node-logging");
// Writes some log entries
logger.info("here's some information");
logger.warn("something might be wrong");
logger.error("something is wrong, seriously");

//change log level to log warn and above
logging.setLevel("warn");
//show the current level
logger.warn(logging.getLevel());

// Writes some log entries
logger.info("here's some information");
logger.warn("something might be wrong");
logger.error("something is wrong, seriously");

to configure different transports, or formats, the 'logging' object is also esposed.

const logging = require("@zaneray/nodejs-logging");
let transports = [new winston.transports.Console({level: "silly",handleExceptions: true})];
let format = format.json();

// set process.env.NODE_ENV in the runtime
// logger level and output method is determined by environment (see transports.js and options.js)
const logger = logging.createWithTransportsAndFormat(transports,format);

// Writes some log entries
logger.info("here's some information");
logger.warn("something might be wrong");
logger.error("something is wrong, seriously");