kyper-matter/src/utils/logger.js

Library to provide simple application functionality like authentication and local/session/token storage for Tesselate applications.

import config from '../config'
import {
  each,
  omit,
  keys,
  isObject,
  isString
} from 'lodash'

let logger = {
  log (logData) {
    const msgArgs = buildMessageArgs(logData)
    if (config.logLevel === 'trace') {
      runConsoleMethod('log', msgArgs)
    }
  },
  debug (logData) {
    const msgArgs = buildMessageArgs(logData)
    if (config.logLevel === 'trace' || config.logLevel === 'debug') {
      runConsoleMethod('debug', msgArgs)
    }
  },
  info (logData) {
    if (config.logLevel === 'trace' || config.logLevel === 'debug' || config.logLevel === 'info') {
      const msgArgs = buildMessageArgs(logData)
      runConsoleMethod('info', msgArgs)
    }
  },
  warn (logData) {
    const msgArgs = buildMessageArgs(logData)
    if (config.logLevel === 'trace' || config.logLevel === 'debug' || config.logLevel === 'info' || config.logLevel === 'warn') {
      runConsoleMethod('warn', msgArgs)
    }
  },
  error (logData) {
    const msgArgs = buildMessageArgs(logData)
    if (config.logLevel === 'trace' || config.logLevel === 'debug' || config.logLevel === 'info' || config.logLevel === 'warn' || config.logLevel === 'error' || config.logLevel === 'fatal') {
      runConsoleMethod('error', msgArgs)
    }
  }
}

export default logger

function runConsoleMethod (methodName, methodData) {
  // Safley run console methods or use console log
  if (methodName && console[methodName]) {
    return console[methodName].apply(console, methodData)
  } else {
    return console.log.apply(console, methodData)
  }
}
function buildMessageArgs (logData) {
  let msgStr = ''
  let msgObj = {}
  // TODO: Attach time stamp
  // Attach location information to the beginning of message
  if (isObject(logData)) {
    if (logData.func) {
      if (logData.obj) {
        // Object and function provided
        msgStr += `[${logData.obj}.${logData.func}()]\n `
      } else if (logData.file) {
        msgStr += `[${logData.file} > ${logData.func}()]\n `
      } else {
        msgStr += `[${logData.func}()]\n `
      }
    }
    const hideList = ['func', 'obj', 'file']
    // Print each key and its value other than obj and func
    each(omit(keys(logData), hideList), key => {
      if (hideList.indexOf(key) === -1) {
        if (key === 'description' || key === 'message') {
          msgStr += logData[key]
          return msgStr
        }
        msgObj[key] = logData[key]
      }
    })
    msgStr += '\n'
  } else if (isString(logData)) {
    msgStr = logData
  }
  return [msgStr, msgObj]
}