MM-22785 audit server CLI (#14144)

Add auditing to server CLI.

Also:
- simplify auditing in API layer
- reduce number of AddMeta calls
- have models serialize themselves
- more consistent field naming

web/context.go

@@ -29,7 +29,7 @@ func (c *Context) LogAuditRec(rec *audit.Record) {
 	c.LogAuditRecWithLevel(rec, app.RestLevel)
 }
 
-// LogAuditRec logs an audit record using specificed Level.
+// LogAuditRec logs an audit record using specified Level.
 func (c *Context) LogAuditRecWithLevel(rec *audit.Record, level audit.Level) {
 	if rec == nil {
 		return
@@ -42,15 +42,12 @@ func (c *Context) LogAuditRecWithLevel(rec *audit.Record, level audit.Level) {
 		}
 		rec.Fail()
 	}
-	if cid := c.App.GetClusterId(); cid != "" {
-		rec.AddMeta(audit.KeyClusterID, cid)
-	}
 	c.App.Srv().Audit.LogRecord(level, *rec)
 }
 
 // MakeAuditRecord creates a audit record pre-populated with data from this context.
 func (c *Context) MakeAuditRecord(event string, initialStatus string) *audit.Record {
-	return &audit.Record{
+	rec := &audit.Record{
 		APIPath:   c.App.Path(),
 		Event:     event,
 		Status:    initialStatus,
@@ -58,8 +55,11 @@ func (c *Context) MakeAuditRecord(event string, initialStatus string) *audit.Rec
 		SessionID: c.App.Session().Id,
 		Client:    c.App.UserAgent(),
 		IPAddress: c.App.IpAddress(),
-		Meta:      audit.Meta{},
+		Meta:      audit.Meta{audit.KeyClusterID: c.App.GetClusterId()},
 	}
+	rec.AddMetaTypeConverter(model.AuditModelTypeConv)
+
+	return rec
 }
 
 func (c *Context) LogAudit(extraInfo string) {