Perf optimization, fix #130

Author: terehov

src/LoggerWithoutCallSite.ts

@@ -51,7 +51,8 @@ export class LoggerWithoutCallSite {
   public constructor(settings?: ISettingsParam, parentSettings?: ISettings) {
     this._parentOrDefaultSettings = {
       type: "pretty",
-      instanceName: hostname(),
+      instanceName: undefined,
+      hostname: parentSettings?.hostname ?? hostname(),
       name: undefined,
       setCallerAsLoggerName: false,
       requestId: undefined,
@@ -163,6 +164,9 @@ export class LoggerWithoutCallSite {
         this.settings.colorizePrettyLogs;
     }
 
+    this._mySettings.instanceName =
+      this._mySettings.instanceName ?? this._mySettings.hostname;
+
     this._mySettings.name =
       this._mySettings.name ??
       (this._mySettings.setCallerAsLoggerName
@@ -396,7 +400,7 @@ export class LoggerWithoutCallSite {
     const logObject: ILogObject = {
       instanceName: this.settings.instanceName,
       loggerName: this.settings.name,
-      hostname: hostname(),
+      hostname: this.settings.hostname,
       requestId,
       date: new Date(),
       logLevel: logLevel,

src/interfaces.ts

@@ -53,6 +53,9 @@ export interface ISettingsParam {
   /** Name of the instance name, default: _host name_ */
   instanceName?: string;
 
+  /** Name of the host, default: _host name_ */
+  hostname?: string;
+
   /** Use the name of the caller type as the name of the logger, default: `false` */
   setCallerAsLoggerName?: boolean;
 
@@ -164,6 +167,7 @@ export interface ISettingsParam {
 export interface ISettings extends ISettingsParam {
   type: "json" | "pretty" | "hidden";
   instanceName?: string;
+  hostname: string;
   setCallerAsLoggerName: boolean;
   name?: string;
   requestId?: string | TRequestIdFunction;