act_runner/internal/pkg/labels/labels.go

85 lines
1.8 KiB
Go

// Copyright 2023 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package labels
import (
"fmt"
"strings"
)
const (
SchemeHost = "host"
SchemeDocker = "docker"
)
type Label struct {
Name string
Schema string
Arg string
}
func Parse(str string) (*Label, error) {
splits := strings.SplitN(str, ":", 3)
label := &Label{
Name: splits[0],
Schema: "host",
Arg: "",
}
if len(splits) >= 2 {
label.Schema = splits[1]
}
if len(splits) >= 3 {
label.Arg = splits[2]
}
if label.Schema != SchemeHost && label.Schema != SchemeDocker {
return nil, fmt.Errorf("unsupported schema: %s", label.Schema)
}
return label, nil
}
type Labels []*Label
func (l Labels) RequireDocker() bool {
for _, label := range l {
if label.Schema == SchemeDocker {
return true
}
}
return false
}
func (l Labels) PickPlatform(runsOn []string) string {
platforms := make(map[string]string, len(l))
for _, label := range l {
switch label.Schema {
case SchemeDocker:
// "//" will be ignored
// TODO maybe we should use 'ubuntu-18.04:docker:node:16-buster' instead
platforms[label.Name] = strings.TrimPrefix(label.Arg, "//")
case SchemeHost:
platforms[label.Name] = "-self-hosted"
default:
// It should not happen, because Parse has checked it.
continue
}
}
for _, v := range runsOn {
if v, ok := platforms[v]; ok {
return v
}
}
// TODO: support multiple labels
// like:
// ["ubuntu-22.04"] => "ubuntu:22.04"
// ["with-gpu"] => "linux:with-gpu"
// ["ubuntu-22.04", "with-gpu"] => "ubuntu:22.04_with-gpu"
// return default.
// So the runner receives a task with a label that the runner doesn't have,
// it happens when the user have edited the label of the runner in the web UI.
// TODO: it may be not correct, what if the runner is used as host mode only?
return "node:16-bullseye"
}