[MM-56757] Expand NotificationsLog to include websocket and email, adding much more varied logging across the entire process (#26273)

* [MM-56757] Expand NotificationsLog to include websocket and email, adding much more varied logging across the entire process

* Rework the status/notify prop calls

* Avoid some repetition in the logging calls

* Fix one log

* Wrap error

---------

Co-authored-by: Mattermost Build <build@mattermost.com>

server/channels/app/post.go

@@ -357,6 +357,13 @@ func (a *App) CreatePost(c request.CTX, post *model.Post, channel *model.Channel
 
 	if rpost.RootId != "" {
 		if appErr := a.ResolvePersistentNotification(c, parentPostList.Posts[post.RootId], rpost.UserId); appErr != nil {
+			a.NotificationsLog().Error("Error resolving persistent notification",
+				mlog.String("sender_id", rpost.UserId),
+				mlog.String("post_id", post.RootId),
+				mlog.String("status", model.StatusServerError),
+				mlog.String("reason", model.ReasonFetchError),
+				mlog.Err(appErr),
+			)
 			return nil, appErr
 		}
 	}
@@ -480,6 +487,12 @@ func (a *App) handlePostEvents(c request.CTX, post *model.Post, user *model.User
 	if channel.TeamId != "" {
 		t, err := a.Srv().Store().Team().Get(channel.TeamId)
 		if err != nil {
+			a.NotificationsLog().Error("Missing team",
+				mlog.String("post_id", post.Id),
+				mlog.String("status", model.StatusServerError),
+				mlog.String("reason", model.ReasonFetchError),
+				mlog.Err(err),
+			)
 			return err
 		}
 		team = t
@@ -764,10 +777,23 @@ func (a *App) publishWebsocketEventForPermalinkPost(c request.CTX, post *model.P
 	if val, ok := post.GetProp(model.PostPropsPreviewedPost).(string); ok {
 		previewedPostID = val
 	} else {
+		a.NotificationsLog().Warn("Failed to get permalink post prop",
+			mlog.String("type", model.TypeWebsocket),
+			mlog.String("post_id", post.Id),
+			mlog.String("status", model.StatusServerError),
+			mlog.String("reason", model.ReasonServerError),
+		)
 		return false, nil
 	}
 
 	if !model.IsValidId(previewedPostID) {
+		a.NotificationsLog().Warn("Invalid post prop id for permalink post",
+			mlog.String("type", model.TypeWebsocket),
+			mlog.String("post_id", post.Id),
+			mlog.String("status", model.StatusServerError),
+			mlog.String("reason", model.ReasonServerError),
+			mlog.String("prop_value", previewedPostID),
+		)
 		c.Logger().Warn("invalid post prop value", mlog.String("prop_key", model.PostPropsPreviewedPost), mlog.String("prop_value", previewedPostID))
 		return false, nil
 	}
@@ -775,6 +801,13 @@ func (a *App) publishWebsocketEventForPermalinkPost(c request.CTX, post *model.P
 	previewedPost, err := a.GetSinglePost(previewedPostID, false)
 	if err != nil {
 		if err.StatusCode == http.StatusNotFound {
+			a.NotificationsLog().Warn("permalink post not found",
+				mlog.String("type", model.TypeWebsocket),
+				mlog.String("post_id", post.Id),
+				mlog.String("status", model.StatusServerError),
+				mlog.String("reason", model.ReasonServerError),
+				mlog.String("referenced_post_id", previewedPostID),
+			)
 			c.Logger().Warn("permalinked post not found", mlog.String("referenced_post_id", previewedPostID))
 			return false, nil
 		}