PLT-2241 Refactored statuses into a more real-time system (#3573)

* Refactored statuses into a more real-time system

* Updated package.json with correct commit and fixed minor bug

* Minor updates to statuses based on feedback

* When setting status online, update only LastActivityAt if status already exists

store/sql_status_store.go

@@ -0,0 +1,166 @@
+// Copyright (c) 2016 Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package store
+
+import (
+	"database/sql"
+	"github.com/mattermost/platform/model"
+)
+
+const (
+	MISSING_STATUS_ERROR = "store.sql_status.get.missing.app_error"
+)
+
+type SqlStatusStore struct {
+	*SqlStore
+}
+
+func NewSqlStatusStore(sqlStore *SqlStore) StatusStore {
+	s := &SqlStatusStore{sqlStore}
+
+	for _, db := range sqlStore.GetAllConns() {
+		table := db.AddTableWithName(model.Status{}, "Status").SetKeys(false, "UserId")
+		table.ColMap("UserId").SetMaxSize(26)
+		table.ColMap("Status").SetMaxSize(32)
+	}
+
+	return s
+}
+
+func (s SqlStatusStore) UpgradeSchemaIfNeeded() {
+}
+
+func (s SqlStatusStore) CreateIndexesIfNotExists() {
+	s.CreateIndexIfNotExists("idx_status_user_id", "Status", "UserId")
+	s.CreateIndexIfNotExists("idx_status_status", "Status", "Status")
+}
+
+func (s SqlStatusStore) SaveOrUpdate(status *model.Status) StoreChannel {
+	storeChannel := make(StoreChannel)
+
+	go func() {
+		result := StoreResult{}
+
+		if err := s.GetReplica().SelectOne(&model.Status{}, "SELECT * FROM Status WHERE UserId = :UserId", map[string]interface{}{"UserId": status.UserId}); err == nil {
+			if _, err := s.GetMaster().Update(status); err != nil {
+				result.Err = model.NewLocAppError("SqlStatusStore.SaveOrUpdate", "store.sql_status.update.app_error", nil, "")
+			}
+		} else {
+			if err := s.GetMaster().Insert(status); err != nil {
+				result.Err = model.NewLocAppError("SqlStatusStore.SaveOrUpdate", "store.sql_status.save.app_error", nil, "")
+			}
+		}
+
+		storeChannel <- result
+		close(storeChannel)
+	}()
+
+	return storeChannel
+}
+
+func (s SqlStatusStore) Get(userId string) StoreChannel {
+	storeChannel := make(StoreChannel)
+
+	go func() {
+		result := StoreResult{}
+
+		var status model.Status
+
+		if err := s.GetReplica().SelectOne(&status,
+			`SELECT
+				*
+			FROM
+				Status
+			WHERE
+				UserId = :UserId`, map[string]interface{}{"UserId": userId}); err != nil {
+			if err == sql.ErrNoRows {
+				result.Err = model.NewLocAppError("SqlStatusStore.Get", MISSING_STATUS_ERROR, nil, err.Error())
+			} else {
+				result.Err = model.NewLocAppError("SqlStatusStore.Get", "store.sql_status.get.app_error", nil, err.Error())
+			}
+		} else {
+			result.Data = &status
+		}
+
+		storeChannel <- result
+		close(storeChannel)
+	}()
+
+	return storeChannel
+}
+
+func (s SqlStatusStore) GetOnlineAway() StoreChannel {
+	storeChannel := make(StoreChannel)
+
+	go func() {
+		result := StoreResult{}
+
+		var statuses []*model.Status
+		if _, err := s.GetReplica().Select(&statuses, "SELECT * FROM Status WHERE Status = :Online OR Status = :Away", map[string]interface{}{"Online": model.STATUS_ONLINE, "Away": model.STATUS_AWAY}); err != nil {
+			result.Err = model.NewLocAppError("SqlStatusStore.GetOnline", "store.sql_status.get_online_away.app_error", nil, err.Error())
+		} else {
+			result.Data = statuses
+		}
+
+		storeChannel <- result
+		close(storeChannel)
+	}()
+
+	return storeChannel
+}
+
+func (s SqlStatusStore) ResetAll() StoreChannel {
+	storeChannel := make(StoreChannel)
+
+	go func() {
+		result := StoreResult{}
+
+		if _, err := s.GetMaster().Exec("UPDATE Status SET Status = :Status", map[string]interface{}{"Status": model.STATUS_OFFLINE}); err != nil {
+			result.Err = model.NewLocAppError("SqlStatusStore.ResetAll", "store.sql_status.reset_all.app_error", nil, "")
+		}
+
+		storeChannel <- result
+		close(storeChannel)
+	}()
+
+	return storeChannel
+}
+
+func (s SqlStatusStore) GetTotalActiveUsersCount() StoreChannel {
+	storeChannel := make(StoreChannel)
+
+	go func() {
+		result := StoreResult{}
+
+		time := model.GetMillis() - (1000 * 60 * 60 * 24)
+
+		if count, err := s.GetReplica().SelectInt("SELECT COUNT(UserId) FROM Status WHERE LastActivityAt > :Time", map[string]interface{}{"Time": time}); err != nil {
+			result.Err = model.NewLocAppError("SqlStatusStore.GetTotalActiveUsersCount", "store.sql_status.get_total_active_users_count.app_error", nil, err.Error())
+		} else {
+			result.Data = count
+		}
+
+		storeChannel <- result
+		close(storeChannel)
+	}()
+
+	return storeChannel
+}
+
+func (s SqlStatusStore) UpdateLastActivityAt(userId string, lastActivityAt int64) StoreChannel {
+	storeChannel := make(StoreChannel)
+
+	go func() {
+		result := StoreResult{}
+
+		if _, err := s.GetMaster().Exec("UPDATE Status SET LastActivityAt = :Time WHERE UserId = :UserId", map[string]interface{}{"UserId": userId, "Time": lastActivityAt}); err != nil {
+			result.Err = model.NewLocAppError("SqlStatusStore.UpdateLastActivityAt", "store.sql_status.update_last_activity_at.app_error", nil, "")
+		}
+
+		storeChannel <- result
+		close(storeChannel)
+	}()
+
+	return storeChannel
+}