Structured logging (#8673)

* Implementing structured logging

* Changes to en.json to allow refactor to run.

* Fixing global logger

* Structured logger initalization.

* Add caller.

* Do some log redirection.

* Auto refactor

* Cleaning up l4g reference and removing dependancy.

* Removing junk.

* Copyright headers.

* Fixing tests

* Revert "Changes to en.json to allow refactor to run."

This reverts commit fd8249e99bcad0231e6ea65cd77c32aae9a54026.

* Fixing some auto refactor strangeness and typo.

* Making keys more human readable.

app/diagnostics.go

@@ -5,11 +5,10 @@ package app
 
 import (
 	"encoding/json"
-	"log"
-	"os"
 	"runtime"
 	"sync/atomic"
 
+	"github.com/mattermost/mattermost-server/mlog"
 	"github.com/mattermost/mattermost-server/model"
 	"github.com/segmentio/analytics-go"
 )
@@ -69,12 +68,12 @@ func (a *App) SendDailyDiagnostics() {
 func (a *App) initDiagnostics(endpoint string) {
 	if client == nil {
 		client = analytics.New(SEGMENT_KEY)
+		client.Logger = a.Log.StdLog(mlog.String("source", "segment"))
 		// For testing
 		if endpoint != "" {
 			client.Endpoint = endpoint
 			client.Verbose = true
 			client.Size = 1
-			client.Logger = log.New(os.Stdout, "segment ", log.LstdFlags)
 		}
 		client.Identify(&analytics.Identify{
 			UserId: a.DiagnosticId(),
@@ -299,10 +298,11 @@ func (a *App) trackConfig() {
 	a.SendDiagnostic(TRACK_CONFIG_LOG, map[string]interface{}{
 		"enable_console":           cfg.LogSettings.EnableConsole,
 		"console_level":            cfg.LogSettings.ConsoleLevel,
+		"console_json":             *cfg.LogSettings.ConsoleJson,
 		"enable_file":              cfg.LogSettings.EnableFile,
 		"file_level":               cfg.LogSettings.FileLevel,
+		"file_json":                cfg.LogSettings.FileJson,
 		"enable_webhook_debugging": cfg.LogSettings.EnableWebhookDebugging,
-		"isdefault_file_format":    isDefault(cfg.LogSettings.FileFormat, ""),
 		"isdefault_file_location":  isDefault(cfg.LogSettings.FileLocation, ""),
 	})