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feat: don't require docker (#16) 

The only reason docker is really required by now, is that act_runner ping docker.
This change only pings docker if a label with `docker://` is added to the runner.

Plain labels without `:` like `self-hosted` are run directly on the system. Previously the pseudo non docker label `-self-hosted` have been required like this `self-hosted:docker://-self-hosted`, but due to docker ping this still required a dockerd to be pingable.

Co-authored-by: Christopher Homberger <christopher.homberger@web.de>
Reviewed-on: https://gitea.com/gitea/act_runner/pulls/16
Reviewed-by: Jason Song <i@wolfogre.com>
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: ChristopherHX <christopherhx@noreply.gitea.io>
Co-committed-by: ChristopherHX <christopherhx@noreply.gitea.io>
This commit is contained in:
ChristopherHX 2023-01-27 20:42:02 +08:00 committed by Lunny Xiao
parent f7a52789d9
commit 990cf93c71
5 changed files with 28 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
README.md
View File

@ -39,7 +39,7 @@ INFO Enter the runner token:
fe884e8027dc292970d4e0303fe82b14xxxxxxxx
INFO Enter the runner name (if set empty, use hostname:Test.local ):
INFO Enter the runner labels, leave blank to use the default labels (comma-separated, for example, ubuntu-20.04:docker://node:16-bullseye,ubuntu-18.04:docker://node:16-buster):
INFO Enter the runner labels, leave blank to use the default labels (comma-separated, for example, self-hosted,ubuntu-20.04:docker://node:16-bullseye,ubuntu-18.04:docker://node:16-buster):
INFO Registering runner, name=Test.local, instance=http://192.168.8.8:3000/, labels=[ubuntu-latest:docker://node:16-bullseye ubuntu-22.04:docker://node:16-bullseye ubuntu-20.04:docker://node:16-bullseye ubuntu-18.04:docker://node:16-buster].
DEBU Successfully pinged the Gitea instance server

21
cmd/daemon.go
View File

@ -3,6 +3,7 @@ package cmd
import (
"context"
"os"
"strings"
"gitea.com/gitea/act_runner/client"
"gitea.com/gitea/act_runner/config"
@ -30,10 +31,22 @@ func runDaemon(ctx context.Context, envFile string) func(cmd *cobra.Command, arg
initLogging(cfg)
// try to connect to docker daemon
// if failed, exit with error
if err := engine.Start(ctx); err != nil {
log.WithError(err).Fatalln("failed to connect docker daemon engine")
// require docker if a runner label uses a docker backend
needsDocker := false
for _, l := range cfg.Runner.Labels {
splits := strings.SplitN(l, ":", 2)
if len(splits) == 2 && strings.HasPrefix(splits[1], "docker://") {
needsDocker = true
break
}
}
if needsDocker {
// try to connect to docker daemon
// if failed, exit with error
if err := engine.Start(ctx); err != nil {
log.WithError(err).Fatalln("failed to connect docker daemon engine")
}
}
var g errgroup.Group

5
cmd/register.go
View File

@ -119,9 +119,10 @@ func (r *registerInputs) validate() error {
func validateLabels(labels []string) error {
for _, label := range labels {
values := strings.SplitN(label, ":", 2)
if len(values) != 2 {
if len(values) > 2 {
return fmt.Errorf("Invalid label: %s", label)
}
// len(values) == 1, label for non docker execution environment
// TODO: validate value format, like docker://node:16-buster
}
return nil
@ -227,7 +228,7 @@ func printStageHelp(stage registerStage) {
hostname, _ := os.Hostname()
log.Infof("Enter the runner name (if set empty, use hostname:%s ):\n", hostname)
case StageInputCustomLabels:
log.Infoln("Enter the runner labels, leave blank to use the default labels (comma-separated, for example, ubuntu-20.04:docker://node:16-bullseye,ubuntu-18.04:docker://node:16-buster):")
log.Infoln("Enter the runner labels, leave blank to use the default labels (comma-separated, for example, self-hosted,ubuntu-20.04:docker://node:16-bullseye,ubuntu-18.04:docker://node:16-buster):")
case StageWaitingForRegistration:
log.Infoln("Waiting for registration...")
}

2
cmd/register_test.go
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@ -3,7 +3,7 @@ package cmd
import "testing"
func TestValidateLabels(t *testing.T) {
labels := []string{"ubuntu-latest:docker://node:16-buster"}
labels := []string{"ubuntu-latest:docker://node:16-buster", "self-hosted"}
if err := validateLabels(labels); err != nil {
t.Errorf("validateLabels() error = %v", err)
}

6
runtime/runtime.go
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@ -24,11 +24,17 @@ func (s *Runner) Run(ctx context.Context, task *runnerv1.Task) error {
func (s *Runner) platformPicker(labels []string) string {
// "ubuntu-18.04:docker://node:16-buster"
// "self-hosted"
platforms := make(map[string]string, len(labels))
for _, l := range s.Labels {
// "ubuntu-18.04:docker://node:16-buster"
splits := strings.SplitN(l, ":", 2)
if len(splits) == 1 {
// identifier for non docker execution environment
platforms[splits[0]] = "-self-hosted"
continue
}
// ["ubuntu-18.04", "docker://node:16-buster"]
k, v := splits[0], splits[1]