tailscale/cmd/tailscale/cli/version.go
David Anderson 54e6c3a290 version: use OSS repo's version when building.
When building with redo, also include the git commit hash
from the proprietary repo, so that we have a precise commit
that identifies all build info (including Go toolchain version).

Add a top-level build script demonstrating to downstream distros
how to burn the right information into builds.

Adjust `tailscale version` to print commit hashes when available.

Fixes #841.

Signed-off-by: David Anderson <danderson@tailscale.com>
2020-10-28 16:17:21 -07:00

71 lines
1.4 KiB
Go

// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cli
import (
"context"
"flag"
"fmt"
"log"
"github.com/peterbourgon/ff/v2/ffcli"
"tailscale.com/ipn"
"tailscale.com/version"
)
var versionCmd = &ffcli.Command{
Name: "version",
ShortUsage: "version [flags]",
ShortHelp: "Print Tailscale version",
FlagSet: (func() *flag.FlagSet {
fs := flag.NewFlagSet("version", flag.ExitOnError)
fs.BoolVar(&versionArgs.daemon, "daemon", false, "also print local node's daemon version")
return fs
})(),
Exec: runVersion,
}
var versionArgs struct {
daemon bool // also check local node's daemon version
}
func runVersion(ctx context.Context, args []string) error {
if len(args) > 0 {
log.Fatalf("too many non-flag arguments: %q", args)
}
if !versionArgs.daemon {
fmt.Println(version.String())
return nil
}
fmt.Printf("Client: %s\n", version.String())
c, bc, ctx, cancel := connect(ctx)
defer cancel()
bc.AllowVersionSkew = true
done := make(chan struct{})
bc.SetNotifyCallback(func(n ipn.Notify) {
if n.ErrMessage != nil {
log.Fatal(*n.ErrMessage)
}
if n.Status != nil {
fmt.Printf("Daemon: %s\n", n.Version)
close(done)
}
})
go pump(ctx, bc, c)
bc.RequestStatus()
select {
case <-done:
return nil
case <-ctx.Done():
return ctx.Err()
}
}