Use standalone @xpring-eng/logger (#620)

Now that @xpring-eng/logger is a standalone library, use it in the PayID repo.

Author: 0xCLARITY

package-lock.json

@@ -37,10 +37,10 @@
   "dependencies": {
     "@hapi/boom": "^9.1.0",
     "@xpring-eng/http-status": "^1.0.0",
+    "@xpring-eng/logger": "^1.0.0",
     "express": "^4.17.1",
     "knex": "^0.21.1",
     "knex-stringcase": "^1.4.1",
-    "log4js": "^6.3.0",
     "pg": "8.2.1",
     "prom-client": "^12.0.0",
     "semver": "^7.3.2",

package.json

@@ -1,81 +1,7 @@
-import { configure, getLogger } from 'log4js'
+import createLogger from '@xpring-eng/logger'
 
 import config from '../config'
 
-// Log Levels
-//
-// OFF    Designates no log messages should be shown
-// MARK   Designates an event that will almost always be logged. Useful for temporary logging.
-// FATAL  Designates very severe error events that will presumably lead the application to abort.
-// ERROR  Designates error events that might still allow the application to continue running.
-// WARN   Designates potentially harmful situations.
-// INFO   Designates informational messages that highlight the progress of the application at coarse-grained level.
-// DEBUG  Designates fine-grained informational events that are most useful to debug an application.
-// TRACE  Designates finer-grained informational events than the DEBUG.
-// ALL    Designates all log events should be shown (equivalent to TRACE)
-
-enum LogLevel {
-  OFF = 'OFF',
-  MARK = 'MARK',
-  FATAL = 'FATAL',
-  ERROR = 'ERROR',
-  WARN = 'WARN',
-  INFO = 'INFO',
-  DEBUG = 'DEBUG',
-  TRACE = 'TRACE',
-  ALL = 'ALL',
-}
-
-// Get the current log level from configuration
-const LOG_LEVEL = config.app.logLevel.toUpperCase()
-
-if (!isLogLevel(LOG_LEVEL)) {
-  throw new Error(
-    `The log level '${LOG_LEVEL}' specified in config is not an acceptable log level`,
-  )
-}
-
-configure({
-  appenders: {
-    out: {
-      type: 'stdout',
-
-      // Pattern Format documentation: https://github.com/log4js-node/log4js-node/blob/master/docs/layouts.md#pattern-format
-      layout: { type: 'pattern', pattern: '%[%-5p%] %m' },
-    },
-
-    // Define a custom pattern to use when LOG_LEVEL=TRACE that includes filenames and line numbers in the log
-    trace: {
-      type: 'stdout',
-      layout: { type: 'pattern', pattern: '%[%-5p %f:%-3l%]\t%m' },
-    },
-  },
-  categories: {
-    default: { appenders: ['out'], level: LOG_LEVEL },
-    trace: { appenders: ['trace'], level: LOG_LEVEL, enableCallStack: true },
-  },
-})
-
-let logCategory = 'default'
-
-// If LOG_LEVEL = TRACE|ALL, use the logger that shows filenames and line numbers
-if ([LogLevel.TRACE, LogLevel.ALL].includes(LOG_LEVEL)) {
-  logCategory = 'trace'
-}
-
-const logger = getLogger(logCategory)
+const logger = createLogger(config.app.logLevel)
 
 export default logger
-
-// HELPER FUNCTIONS
-// TODO:(hbergren) Could possibly make this a generic (for stringy enums, but not numeric enums)
-/**
- * A type guard function that determines if a provided string is a LogLevel enum member.
- *
- * @param member - A string which may or may not be a LogLevel.
- *
- * @returns A type predicate (boolean for type narrowing) indicating whether the string is a LogLevel.
- */
-function isLogLevel(member: string): member is LogLevel {
-  return Object.values(LogLevel).includes(member as LogLevel)
-}