forked from vikunja/vikunja
konrad
584e3af237
Fix getting avatar based on email Remove avatarUrl from user struct Fix staticcheck Add default avatar size Add config option for caching avatars go mod vendor Add swagger docs Add proxying gravatar requests for user avatars Co-authored-by: kolaente <k@knt.li> Reviewed-on: vikunja/api#148
80 lines
2.5 KiB
Go
80 lines
2.5 KiB
Go
// Vikunja is a to-do-list application to facilitate your life.
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// Copyright 2018-2020 Vikunja and contributors. All rights reserved.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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package gravatar
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import (
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"code.vikunja.io/api/pkg/config"
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"code.vikunja.io/api/pkg/log"
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"code.vikunja.io/api/pkg/user"
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"code.vikunja.io/api/pkg/utils"
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"io/ioutil"
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"net/http"
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"strconv"
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"time"
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)
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type avatar struct {
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content []byte
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loadedAt time.Time
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}
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// Provider is the gravatar provider
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type Provider struct {
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}
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// avatars is a global map which contains cached avatars of the users
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var avatars map[string]*avatar
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func init() {
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avatars = make(map[string]*avatar)
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}
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// GetAvatar implements getting the avatar for the user
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func (g *Provider) GetAvatar(user *user.User, size int64) ([]byte, string, error) {
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sizeString := strconv.FormatInt(size, 10)
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cacheKey := user.Username + "_" + sizeString
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a, exists := avatars[cacheKey]
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var needsRefetch bool
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if exists {
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// elaped is alway < 0 so the next check would always succeed.
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// To have it make sense, we flip that.
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elapsed := time.Until(a.loadedAt) * -1
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needsRefetch = elapsed > time.Duration(config.ServiceGravatarExpiration.GetInt64())*time.Second
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if needsRefetch {
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log.Debugf("Refetching avatar for user %d after %v", user.ID, elapsed)
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} else {
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log.Debugf("Serving avatar for user %d from cache", user.ID)
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}
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}
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if !exists || needsRefetch {
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log.Debugf("Gravatar for user %d with size %d not cached, requesting from gravatar...", user.ID, size)
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resp, err := http.Get("https://www.gravatar.com/avatar/" + utils.Md5String(user.Email) + "?s=" + sizeString + "&d=mp")
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if err != nil {
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return nil, "", err
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}
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avatarContent, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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return nil, "", err
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}
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avatars[cacheKey] = &avatar{
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content: avatarContent,
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loadedAt: time.Now(),
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}
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}
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return avatars[cacheKey].content, "image/jpg", nil
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}
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