[MM-64686] Expose audit logging functionality via plugin API (#31204)

This commit exposes audit logging functionality to plugins via the plugin API, allowing plugins to create and log audit records. Additionally, it addresses a gob encoding issue that could cause plugin crashes when audit data contains nil pointers or unregistered types.

server/channels/api4/compliance.go

@@ -12,7 +12,6 @@ import (
 
 	"github.com/mattermost/mattermost/server/public/model"
 	"github.com/mattermost/mattermost/server/public/shared/mlog"
-	"github.com/mattermost/mattermost/server/v8/channels/audit"
 )
 
 func (api *API) InitCompliance() {
@@ -29,8 +28,8 @@ func createComplianceReport(c *Context, w http.ResponseWriter, r *http.Request)
 		return
 	}
 
-	auditRec := c.MakeAuditRecord("createComplianceReport", audit.Fail)
-	audit.AddEventParameterAuditable(auditRec, "compliance", &job)
+	auditRec := c.MakeAuditRecord("createComplianceReport", model.AuditStatusFail)
+	model.AddEventParameterAuditableToAuditRec(auditRec, "compliance", &job)
 	defer c.LogAuditRec(auditRec)
 
 	if !c.App.SessionHasPermissionTo(*c.AppContext.Session(), model.PermissionCreateComplianceExportJob) {
@@ -65,7 +64,7 @@ func getComplianceReports(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	auditRec := c.MakeAuditRecord("getComplianceReports", audit.Fail)
+	auditRec := c.MakeAuditRecord("getComplianceReports", model.AuditStatusFail)
 	defer c.LogAuditRec(auditRec)
 
 	crs, err := c.App.GetComplianceReports(c.Params.Page, c.Params.PerPage)
@@ -86,7 +85,7 @@ func getComplianceReport(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	auditRec := c.MakeAuditRecord("getComplianceReport", audit.Fail)
+	auditRec := c.MakeAuditRecord("getComplianceReport", model.AuditStatusFail)
 	defer c.LogAuditRec(auditRec)
 
 	if !c.App.SessionHasPermissionTo(*c.AppContext.Session(), model.PermissionReadComplianceExportJob) {
@@ -94,7 +93,7 @@ func getComplianceReport(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	audit.AddEventParameter(auditRec, "report_id", c.Params.ReportId)
+	model.AddEventParameterToAuditRec(auditRec, "report_id", c.Params.ReportId)
 	job, err := c.App.GetComplianceReport(c.Params.ReportId)
 	if err != nil {
 		c.Err = err
@@ -116,9 +115,9 @@ func downloadComplianceReport(c *Context, w http.ResponseWriter, r *http.Request
 		return
 	}
 
-	auditRec := c.MakeAuditRecord("downloadComplianceReport", audit.Fail)
+	auditRec := c.MakeAuditRecord("downloadComplianceReport", model.AuditStatusFail)
 	defer c.LogAuditRec(auditRec)
-	audit.AddEventParameter(auditRec, "compliance_id", c.Params.ReportId)
+	model.AddEventParameterToAuditRec(auditRec, "compliance_id", c.Params.ReportId)
 
 	if !c.App.SessionHasPermissionTo(*c.AppContext.Session(), model.PermissionDownloadComplianceExportResult) {
 		c.SetPermissionError(model.PermissionDownloadComplianceExportResult)