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f3fb3c6f56
When adding Avatar email-hash pairs we simply want the DB table to represent a Set. We don't care if the hash-pair is already present, so we just simply Insert and ignore the error. Unfortunately this seems to cause some DBs to log the duplicate insert to their logs - looking like a bug a in Gitea. Now, there is no standard way in SQL to say Insert but if there's an error ignore it. MySQL has INSERT IGNORE, PostgreSQL >= 9.5 has INSERT ... ON CONFLICT DO NOTHING, but I do not believe that SQLite or MSSQL have variants. This PR places the insert in a transaction which we are happy to fail if there is an error - hopefully this will stop the unnecessary logging. Signed-off-by: Andrew Thornton <art27@cantab.net> Co-authored-by: techknowlogick <techknowlogick@gitea.io>
60 lines
1.7 KiB
Go
60 lines
1.7 KiB
Go
// Copyright 2020 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package models
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import (
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"crypto/md5"
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"fmt"
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"net/url"
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"strings"
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"code.gitea.io/gitea/modules/cache"
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"code.gitea.io/gitea/modules/setting"
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)
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// EmailHash represents a pre-generated hash map
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type EmailHash struct {
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Hash string `xorm:"pk varchar(32)"`
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Email string `xorm:"UNIQUE NOT NULL"`
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}
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// GetEmailForHash converts a provided md5sum to the email
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func GetEmailForHash(md5Sum string) (string, error) {
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return cache.GetString("Avatar:"+md5Sum, func() (string, error) {
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emailHash := EmailHash{
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Hash: strings.ToLower(strings.TrimSpace(md5Sum)),
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}
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_, err := x.Get(&emailHash)
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return emailHash.Email, err
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})
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}
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// AvatarLink returns an avatar link for a provided email
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func AvatarLink(email string) string {
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lowerEmail := strings.ToLower(strings.TrimSpace(email))
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sum := fmt.Sprintf("%x", md5.Sum([]byte(lowerEmail)))
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_, _ = cache.GetString("Avatar:"+sum, func() (string, error) {
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emailHash := &EmailHash{
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Email: lowerEmail,
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Hash: sum,
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}
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// OK we're going to open a session just because I think that that might hide away any problems with postgres reporting errors
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sess := x.NewSession()
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defer sess.Close()
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if err := sess.Begin(); err != nil {
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// we don't care about any DB problem just return the lowerEmail
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return lowerEmail, nil
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}
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_, _ = sess.Insert(emailHash)
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if err := sess.Commit(); err != nil {
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// Seriously we don't care about any DB problems just return the lowerEmail - we expect the transaction to fail most of the time
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return lowerEmail, nil
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}
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return lowerEmail, nil
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})
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return setting.AppSubURL + "/avatar/" + url.PathEscape(sum)
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}
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