refactor: Updated pino instrumentation to separate the wrapping of as…

…Json into its own function (#2464)

lib/instrumentation/pino/pino.js

@@ -15,7 +15,6 @@ const {
 } = require('../../util/application-logging')
 const semver = require('semver')
 
-// eslint-disable-next-line sonarjs/cognitive-complexity
 module.exports = function instrument(shim, tools) {
   const pinoVersion = shim.pkgVersion
 
@@ -35,7 +34,20 @@ module.exports = function instrument(shim, tools) {
   const metrics = agent.metrics
   createModuleUsageMetric('pino', metrics)
 
+  wrapAsJson({ shim, tools })
+}
+
+/**
+ * Wraps `asJson` to properly decorate and forward logs
+ *
+ * @param {object} params to function
+ * @param {Shim} params.shim instance of shim
+ * @param {object} params.tools exported `pino/lib/tools`
+ */
+function wrapAsJson({ shim, tools }) {
   const symbols = shim.require('./lib/symbols')
+  const { agent } = shim
+  const { config, metrics } = agent
 
   shim.wrap(tools, 'asJson', function wrapJson(shim, asJson) {
     /**
@@ -98,16 +110,14 @@ module.exports = function instrument(shim, tools) {
  * reformats error and assigns NR context data
  * to log line
  *
- * @param logLine.logLine
- * @param {object} logLine log line
- * @param {object} metadata NR context data
- * @param {string} chindings serialized string of all common log line data
- * @param logLine.args
- * @param logLine.agent
- * @param logLine.chindings
- * @param logLine.msg
- * @param logLine.level
- * @param logLine.logger
+ * @param {object} params to function
+ * @param {object} params.logLine log line
+ * @param {string} params.msg message of log line
+ * @param {object} params.agent instance of agent
+ * @param {string} params.chindings serialized string of all common log line data
+ * @param {string} params.level log level
+ * @param {object} params.logger instance of agent logger
+ * @returns {function} wrapped log formatter function
  */
 function reformatLogLine({ logLine, msg, agent, chindings = '', level, logger }) {
   const metadata = agent.getLinkingMetadata()