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// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
package store
import (
"github.com/mattermost/gorp"
"github.com/mattermost/platform/einterfaces"
"github.com/mattermost/platform/model"
"github.com/mattermost/platform/utils"
l4g "github.com/alecthomas/log4go"
)
const (
REACTION_CACHE_SIZE = 20000
REACTION_CACHE_SEC = 1800 // 30 minutes
)
var reactionCache *utils.Cache = utils.NewLru(REACTION_CACHE_SIZE)
type SqlReactionStore struct {
SqlStore
}
func NewSqlReactionStore(sqlStore SqlStore) ReactionStore {
s := &SqlReactionStore{sqlStore}
for _, db := range sqlStore.GetAllConns() {
table := db.AddTableWithName(model.Reaction{}, "Reactions").SetKeys(false, "UserId", "PostId", "EmojiName")
table.ColMap("UserId").SetMaxSize(26)
table.ColMap("PostId").SetMaxSize(26)
table.ColMap("EmojiName").SetMaxSize(64)
}
return s
}
func (s SqlReactionStore) CreateIndexesIfNotExists() {
s.CreateIndexIfNotExists("idx_reactions_post_id", "Reactions", "PostId")
s.CreateIndexIfNotExists("idx_reactions_user_id", "Reactions", "UserId")
s.CreateIndexIfNotExists("idx_reactions_emoji_name", "Reactions", "EmojiName")
}
func (s SqlReactionStore) Save(reaction *model.Reaction) StoreChannel {
storeChannel := make(StoreChannel)
go func() {
result := StoreResult{}
reaction.PreSave()
if result.Err = reaction.IsValid(); result.Err != nil {
storeChannel <- result
close(storeChannel)
return
}
if transaction, err := s.GetMaster().Begin(); err != nil {
result.Err = model.NewLocAppError("SqlReactionStore.Save", "store.sql_reaction.save.begin.app_error", nil, err.Error())
} else {
err := saveReactionAndUpdatePost(transaction, reaction)
if err != nil {
transaction.Rollback()
// We don't consider duplicated save calls as an error
if !IsUniqueConstraintError(err.Error(), []string{"reactions_pkey", "PRIMARY"}) {
result.Err = model.NewLocAppError("SqlPreferenceStore.Save", "store.sql_reaction.save.save.app_error", nil, err.Error())
}
} else {
if err := transaction.Commit(); err != nil {
// don't need to rollback here since the transaction is already closed
result.Err = model.NewLocAppError("SqlPreferenceStore.Save", "store.sql_reaction.save.commit.app_error", nil, err.Error())
}
}
if result.Err == nil {
result.Data = reaction
}
}
storeChannel <- result
close(storeChannel)
}()
return storeChannel
}
func (s SqlReactionStore) Delete(reaction *model.Reaction) StoreChannel {
storeChannel := make(StoreChannel)
go func() {
result := StoreResult{}
if transaction, err := s.GetMaster().Begin(); err != nil {
result.Err = model.NewLocAppError("SqlReactionStore.Delete", "store.sql_reaction.delete.begin.app_error", nil, err.Error())
} else {
err := deleteReactionAndUpdatePost(transaction, reaction)
if err != nil {
transaction.Rollback()
result.Err = model.NewLocAppError("SqlPreferenceStore.Delete", "store.sql_reaction.delete.app_error", nil, err.Error())
} else if err := transaction.Commit(); err != nil {
// don't need to rollback here since the transaction is already closed
result.Err = model.NewLocAppError("SqlPreferenceStore.Delete", "store.sql_reaction.delete.commit.app_error", nil, err.Error())
} else {
result.Data = reaction
}
}
storeChannel <- result
close(storeChannel)
}()
return storeChannel
}
func saveReactionAndUpdatePost(transaction *gorp.Transaction, reaction *model.Reaction) error {
if err := transaction.Insert(reaction); err != nil {
return err
}
return updatePostForReactions(transaction, reaction.PostId)
}
func deleteReactionAndUpdatePost(transaction *gorp.Transaction, reaction *model.Reaction) error {
if _, err := transaction.Exec(
`DELETE FROM
Reactions
WHERE
PostId = :PostId AND
UserId = :UserId AND
EmojiName = :EmojiName`,
map[string]interface{}{"PostId": reaction.PostId, "UserId": reaction.UserId, "EmojiName": reaction.EmojiName}); err != nil {
return err
}
return updatePostForReactions(transaction, reaction.PostId)
}
const (
// Set HasReactions = true if and only if the post has reactions, update UpdateAt only if HasReactions changes
UPDATE_POST_HAS_REACTIONS_QUERY = `UPDATE
Posts
SET
UpdateAt = (CASE
WHEN HasReactions != (SELECT count(0) > 0 FROM Reactions WHERE PostId = :PostId) THEN :UpdateAt
ELSE UpdateAt
END),
HasReactions = (SELECT count(0) > 0 FROM Reactions WHERE PostId = :PostId)
WHERE
Id = :PostId`
)
func updatePostForReactions(transaction *gorp.Transaction, postId string) error {
_, err := transaction.Exec(UPDATE_POST_HAS_REACTIONS_QUERY, map[string]interface{}{"PostId": postId, "UpdateAt": model.GetMillis()})
return err
}
func (s SqlReactionStore) InvalidateCacheForPost(postId string) {
reactionCache.Remove(postId)
}
func (s SqlReactionStore) InvalidateCache() {
reactionCache.Purge()
}
func (s SqlReactionStore) GetForPost(postId string, allowFromCache bool) StoreChannel {
storeChannel := make(StoreChannel)
go func() {
result := StoreResult{}
metrics := einterfaces.GetMetricsInterface()
if allowFromCache {
if cacheItem, ok := reactionCache.Get(postId); ok {
if metrics != nil {
metrics.IncrementMemCacheHitCounter("Reactions")
}
result.Data = cacheItem.([]*model.Reaction)
storeChannel <- result
close(storeChannel)
return
} else {
if metrics != nil {
metrics.IncrementMemCacheMissCounter("Reactions")
}
}
} else {
if metrics != nil {
metrics.IncrementMemCacheMissCounter("Reactions")
}
}
var reactions []*model.Reaction
if _, err := s.GetReplica().Select(&reactions,
`SELECT
*
FROM
Reactions
WHERE
PostId = :PostId
ORDER BY
CreateAt`, map[string]interface{}{"PostId": postId}); err != nil {
result.Err = model.NewLocAppError("SqlReactionStore.GetForPost", "store.sql_reaction.get_for_post.app_error", nil, "")
} else {
result.Data = reactions
reactionCache.AddWithExpiresInSecs(postId, reactions, REACTION_CACHE_SEC)
}
storeChannel <- result
close(storeChannel)
}()
return storeChannel
}
func (s SqlReactionStore) DeleteAllWithEmojiName(emojiName string) StoreChannel {
storeChannel := make(StoreChannel)
go func() {
result := StoreResult{}
// doesn't use a transaction since it's better for this to half-finish than to not commit anything
var reactions []*model.Reaction
if _, err := s.GetReplica().Select(&reactions,
`SELECT
*
FROM
Reactions
WHERE
EmojiName = :EmojiName`, map[string]interface{}{"EmojiName": emojiName}); err != nil {
result.Err = model.NewLocAppError("SqlReactionStore.DeleteAllWithEmojiName",
"store.sql_reaction.delete_all_with_emoji_name.get_reactions.app_error", nil,
"emoji_name="+emojiName+", error="+err.Error())
storeChannel <- result
close(storeChannel)
return
}
if _, err := s.GetMaster().Exec(
`DELETE FROM
Reactions
WHERE
EmojiName = :EmojiName`, map[string]interface{}{"EmojiName": emojiName}); err != nil {
result.Err = model.NewLocAppError("SqlReactionStore.DeleteAllWithEmojiName",
"store.sql_reaction.delete_all_with_emoji_name.delete_reactions.app_error", nil,
"emoji_name="+emojiName+", error="+err.Error())
storeChannel <- result
close(storeChannel)
return
}
for _, reaction := range reactions {
if _, err := s.GetMaster().Exec(UPDATE_POST_HAS_REACTIONS_QUERY,
map[string]interface{}{"PostId": reaction.PostId, "UpdateAt": model.GetMillis()}); err != nil {
l4g.Warn(utils.T("store.sql_reaction.delete_all_with_emoji_name.update_post.warn"), reaction.PostId, err.Error())
}
}
storeChannel <- result
close(storeChannel)
}()
return storeChannel
}
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