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link_metadata_store.go
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link_metadata_store.go
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// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
package sqlstore
import (
"database/sql"
"net/http"
"github.com/mattermost/mattermost-server/model"
"github.com/mattermost/mattermost-server/store"
)
type SqlLinkMetadataStore struct {
SqlStore
}
func NewSqlLinkMetadataStore(sqlStore SqlStore) store.LinkMetadataStore {
s := &SqlLinkMetadataStore{sqlStore}
for _, db := range sqlStore.GetAllConns() {
table := db.AddTableWithName(model.LinkMetadata{}, "LinkMetadata").SetKeys(false, "Hash")
table.ColMap("URL").SetMaxSize(2048)
table.ColMap("Type").SetMaxSize(16)
table.ColMap("Data").SetMaxSize(4096)
}
return s
}
func (s SqlLinkMetadataStore) CreateIndexesIfNotExists() {
if s.DriverName() == model.DATABASE_DRIVER_MYSQL {
s.CreateCompositeIndexIfNotExists("idx_link_metadata_url_timestamp", "LinkMetadata", []string{"URL(512)", "Timestamp"})
} else {
s.CreateCompositeIndexIfNotExists("idx_link_metadata_url_timestamp", "LinkMetadata", []string{"URL", "Timestamp"})
}
}
func (s SqlLinkMetadataStore) Save(metadata *model.LinkMetadata) store.StoreChannel {
return store.Do(func(result *store.StoreResult) {
if result.Err = metadata.IsValid(); result.Err != nil {
return
}
metadata.PreSave()
err := s.GetMaster().Insert(metadata)
if err != nil {
result.Err = model.NewAppError("SqlLinkMetadataStore.Save", "store.sql_link_metadata.save.app_error", nil, "url="+metadata.URL+", "+err.Error(), http.StatusInternalServerError)
return
}
result.Data = metadata
})
}
func (s SqlLinkMetadataStore) Get(url string, timestamp int64) store.StoreChannel {
return store.Do(func(result *store.StoreResult) {
var metadata *model.LinkMetadata
err := s.GetReplica().SelectOne(&metadata,
`SELECT
*
FROM
LinkMetadata
WHERE
URL = :URL
AND Timestamp = :Timestamp`, map[string]interface{}{"URL": url, "Timestamp": timestamp})
if err != nil {
result.Err = model.NewAppError("SqlLinkMetadataStore.Get", "store.sql_link_metadata.get.app_error", nil, "url="+url+", "+err.Error(), http.StatusInternalServerError)
if err == sql.ErrNoRows {
result.Err.StatusCode = http.StatusNotFound
}
return
}
err = metadata.DeserializeDataToConcreteType()
if err != nil {
result.Err = model.NewAppError("SqlLinkMetadataStore.Get", "store.sql_link_metadata.get.app_error", nil, "url="+url+", "+err.Error(), http.StatusInternalServerError)
return
}
result.Data = metadata
})
}