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// Copyright 2022 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package cmd
import (
"context"
"fmt"
"os"
"path"
"path/filepath"
"runtime"
"strconv"
"strings"
"connectrpc.com/connect"
"github.com/mattn/go-isatty"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
"gitea.com/gitea/act_runner/internal/app/poll"
"gitea.com/gitea/act_runner/internal/app/run"
"gitea.com/gitea/act_runner/internal/pkg/client"
"gitea.com/gitea/act_runner/internal/pkg/config"
"gitea.com/gitea/act_runner/internal/pkg/envcheck"
"gitea.com/gitea/act_runner/internal/pkg/labels"
"gitea.com/gitea/act_runner/internal/pkg/ver"
)
func runDaemon(ctx context.Context, configFile *string) func(cmd *cobra.Command, args []string) error {
return func(cmd *cobra.Command, args []string) error {
cfg, err := config.LoadDefault(*configFile)
if err != nil {
return fmt.Errorf("invalid configuration: %w", err)
}
initLogging(cfg)
log.Infoln("Starting runner daemon")
reg, err := config.LoadRegistration(cfg.Runner.File)
if os.IsNotExist(err) {
log.Error("registration file not found, please register the runner first")
return err
} else if err != nil {
return fmt.Errorf("failed to load registration file: %w", err)
}
cfg.Tune(reg.Address)
lbls := reg.Labels
if len(cfg.Runner.Labels) > 0 {
lbls = cfg.Runner.Labels
}
ls := labels.Labels{}
for _, l := range lbls {
label, err := labels.Parse(l)
if err != nil {
log.WithError(err).Warnf("ignored invalid label %q", l)
continue
}
ls = append(ls, label)
}
if len(ls) == 0 {
log.Warn("no labels configured, runner may not be able to pick up jobs")
}
if ls.RequireDocker() {
dockerSocketPath, err := getDockerSocketPath(cfg.Container.DockerHost)
if err != nil {
return err
}
if err := envcheck.CheckIfDockerRunning(ctx, dockerSocketPath); err != nil {
return err
}
// if dockerSocketPath passes the check, override DOCKER_HOST with dockerSocketPath
os.Setenv("DOCKER_HOST", dockerSocketPath)
// empty cfg.Container.DockerHost means act_runner need to find an available docker host automatically
// and assign the path to cfg.Container.DockerHost
if cfg.Container.DockerHost == "" {
cfg.Container.DockerHost = dockerSocketPath
}
// check the scheme, if the scheme is not npipe or unix
// set cfg.Container.DockerHost to "-" because it can't be mounted to the job container
if protoIndex := strings.Index(cfg.Container.DockerHost, "://"); protoIndex != -1 {
scheme := cfg.Container.DockerHost[:protoIndex]
if !strings.EqualFold(scheme, "npipe") && !strings.EqualFold(scheme, "unix") {
cfg.Container.DockerHost = "-"
}
}
}
cli := client.New(
reg.Address,
cfg.Runner.Insecure,
reg.UUID,
reg.Token,
ver.Version(),
)
runner := run.NewRunner(cfg, reg, cli)
// declare the labels of the runner before fetching tasks
resp, err := runner.Declare(ctx, ls.Names())
if err != nil && connect.CodeOf(err) == connect.CodeUnimplemented {
// Gitea instance is older version. skip declare step.
log.Warn("Because the Forgejo instance is an old version, skipping declaring the labels and version.")
} else if err != nil {
log.WithError(err).Error("fail to invoke Declare")
return err
} else {
log.Infof("runner: %s, with version: %s, with labels: %v, declared successfully",
resp.Msg.Runner.Name, resp.Msg.Runner.Version, resp.Msg.Runner.Labels)
// if declared successfully, override the labels in the.runner file with valid labels in the config file (if specified)
runner.Update(ctx, ls)
reg.Labels = ls.ToStrings()
if err := config.SaveRegistration(cfg.Runner.File, reg); err != nil {
return fmt.Errorf("failed to save runner config: %w", err)
}
}
poller := poll.New(cfg, cli, runner)
go poller.Poll()
<-ctx.Done()
log.Infof("runner: %s shutdown initiated, waiting [runner].shutdown_timeout=%s for running jobs to complete before shutting down", resp.Msg.Runner.Name, cfg.Runner.ShutdownTimeout)
ctx, cancel := context.WithTimeout(context.Background(), cfg.Runner.ShutdownTimeout)
defer cancel()
err = poller.Shutdown(ctx)
if err != nil {
log.Warnf("runner: %s cancelled in progress jobs during shutdown", resp.Msg.Runner.Name)
}
return nil
}
}
// initLogging setup the global logrus logger.
func initLogging(cfg *config.Config) {
isTerm := isatty.IsTerminal(os.Stdout.Fd())
format := &log.TextFormatter{
DisableColors: !isTerm,
FullTimestamp: true,
}
log.SetFormatter(format)
if l := cfg.Log.Level; l != "" {
level, err := log.ParseLevel(l)
if err != nil {
log.WithError(err).
Errorf("invalid log level: %q", l)
}
// debug level
if level == log.DebugLevel {
log.SetReportCaller(true)
format.CallerPrettyfier = func(f *runtime.Frame) (string, string) {
// get function name
s := strings.Split(f.Function, ".")
funcname := "[" + s[len(s)-1] + "]"
// get file name and line number
_, filename := path.Split(f.File)
filename = "[" + filename + ":" + strconv.Itoa(f.Line) + "]"
return funcname, filename
}
log.SetFormatter(format)
}
if log.GetLevel() != level {
log.Infof("log level changed to %v", level)
log.SetLevel(level)
}
}
}
var commonSocketPaths = []string{
"/var/run/docker.sock",
"/run/podman/podman.sock",
"$HOME/.colima/docker.sock",
"$XDG_RUNTIME_DIR/docker.sock",
"$XDG_RUNTIME_DIR/podman/podman.sock",
`\\.\pipe\docker_engine`,
"$HOME/.docker/run/docker.sock",
}
func getDockerSocketPath(configDockerHost string) (string, error) {
// a `-` means don't mount the docker socket to job containers
if configDockerHost != "" && configDockerHost != "-" {
return configDockerHost, nil
}
socket, found := os.LookupEnv("DOCKER_HOST")
if found {
return socket, nil
}
for _, p := range commonSocketPaths {
if _, err := os.Lstat(os.ExpandEnv(p)); err == nil {
if strings.HasPrefix(p, `\\.\`) {
return "npipe://" + filepath.ToSlash(os.ExpandEnv(p)), nil
}
return "unix://" + filepath.ToSlash(os.ExpandEnv(p)), nil
}
}
return "", fmt.Errorf("daemon Docker Engine socket not found and docker_host config was invalid")
}
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