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forgejo/modules/updatechecker/update_checker.go
wxiaoguang 960c322586
Refactor update checker to use AppState (#17387)
We have the `AppState` module now, it can store app related data easily. We do not need to create separate tables for each feature.

So the update checker can use `AppState` instead of a one-row dedicate table.

And the code of update checker is moved from `models` to `modules`.
2021-10-21 17:10:49 +01:00

98 lines
2.3 KiB
Go

// Copyright 2021 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package updatechecker
import (
"encoding/json"
"io/ioutil"
"net/http"
"code.gitea.io/gitea/modules/appstate"
"code.gitea.io/gitea/modules/proxy"
"code.gitea.io/gitea/modules/setting"
"github.com/hashicorp/go-version"
)
// CheckerState stores the remote version from the JSON endpoint
type CheckerState struct {
LatestVersion string
}
// Name returns the name of the state item for update checker
func (r *CheckerState) Name() string {
return "update-checker"
}
// GiteaUpdateChecker returns error when new version of Gitea is available
func GiteaUpdateChecker(httpEndpoint string) error {
httpClient := &http.Client{
Transport: &http.Transport{
Proxy: proxy.Proxy(),
},
}
req, err := http.NewRequest("GET", httpEndpoint, nil)
if err != nil {
return err
}
resp, err := httpClient.Do(req)
if err != nil {
return err
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return err
}
type respType struct {
Latest struct {
Version string `json:"version"`
} `json:"latest"`
}
respData := respType{}
err = json.Unmarshal(body, &respData)
if err != nil {
return err
}
return UpdateRemoteVersion(respData.Latest.Version)
}
// UpdateRemoteVersion updates the latest available version of Gitea
func UpdateRemoteVersion(version string) (err error) {
return appstate.AppState.Set(&CheckerState{LatestVersion: version})
}
// GetRemoteVersion returns the current remote version (or currently installed verson if fail to fetch from DB)
func GetRemoteVersion() string {
item := new(CheckerState)
if err := appstate.AppState.Get(item); err != nil {
return ""
}
return item.LatestVersion
}
// GetNeedUpdate returns true whether a newer version of Gitea is available
func GetNeedUpdate() bool {
curVer, err := version.NewVersion(setting.AppVer)
if err != nil {
// return false to fail silently
return false
}
remoteVerStr := GetRemoteVersion()
if remoteVerStr == "" {
// no remote version is known
return false
}
remoteVer, err := version.NewVersion(remoteVerStr)
if err != nil {
// return false to fail silently
return false
}
return curVer.LessThan(remoteVer)
}