Files
gluetun/internal/version/version.go
2021-02-06 16:26:23 +00:00

73 lines
2.3 KiB
Go

// Package version implements functions to fetch information from
// Github on newer version of the program available.
package version
import (
"context"
"fmt"
"net/http"
"time"
"github.com/qdm12/gluetun/internal/logging"
"github.com/qdm12/gluetun/internal/models"
)
// GetMessage returns a message for the user describing if there is a newer version
// available. It should only be called once the tunnel is established.
func GetMessage(ctx context.Context, buildInfo models.BuildInformation,
client *http.Client) (message string, err error) {
if buildInfo.Version == "latest" {
// Find # of commits between current commit and latest commit
commitsSince, err := getCommitsSince(ctx, client, buildInfo.Commit)
if err != nil {
return "", fmt.Errorf("cannot get version information: %w", err)
} else if commitsSince == 0 {
return fmt.Sprintf("You are running on the bleeding edge of %s!", buildInfo.Version), nil
}
commits := "commits"
if commitsSince == 1 {
commits = "commit"
}
return fmt.Sprintf("You are running %d %s behind the most recent %s", commitsSince, commits, buildInfo.Version), nil
}
tagName, name, releaseTime, err := getLatestRelease(ctx, client)
if err != nil {
return "", fmt.Errorf("cannot get version information: %w", err)
}
if tagName == buildInfo.Version {
return fmt.Sprintf("You are running the latest release %s", buildInfo.Version), nil
}
timeSinceRelease := logging.FormatDuration(time.Since(releaseTime))
return fmt.Sprintf("There is a new release %s (%s) created %s ago",
tagName, name, timeSinceRelease),
nil
}
func getLatestRelease(ctx context.Context, client *http.Client) (tagName, name string, time time.Time, err error) {
releases, err := getGithubReleases(ctx, client)
if err != nil {
return "", "", time, err
}
for _, release := range releases {
if release.Prerelease {
continue
}
return release.TagName, release.Name, release.PublishedAt, nil
}
return "", "", time, fmt.Errorf("no releases found")
}
func getCommitsSince(ctx context.Context, client *http.Client, commitShort string) (n int, err error) {
commits, err := getGithubCommits(ctx, client)
if err != nil {
return 0, err
}
for i := range commits {
if commits[i].Sha[:7] == commitShort {
return n, nil
}
n++
}
return 0, fmt.Errorf("no commit matching %q was found", commitShort)
}