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|
package main
import (
"context"
"flag"
"fmt"
"os"
"time"
"github.com/go-enry/go-license-detector/v4/licensedb"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promauto"
log "github.com/sirupsen/logrus"
"gitlab.com/gitlab-org/gitaly/v15/client"
"gitlab.com/gitlab-org/gitaly/v15/internal/backchannel"
"gitlab.com/gitlab-org/gitaly/v15/internal/bootstrap"
"gitlab.com/gitlab-org/gitaly/v15/internal/bootstrap/starter"
"gitlab.com/gitlab-org/gitaly/v15/internal/cache"
"gitlab.com/gitlab-org/gitaly/v15/internal/cgroups"
"gitlab.com/gitlab-org/gitaly/v15/internal/git"
"gitlab.com/gitlab-org/gitaly/v15/internal/git/catfile"
"gitlab.com/gitlab-org/gitaly/v15/internal/git/housekeeping"
"gitlab.com/gitlab-org/gitaly/v15/internal/git/localrepo"
"gitlab.com/gitlab-org/gitaly/v15/internal/git/repository"
"gitlab.com/gitlab-org/gitaly/v15/internal/git/updateref"
"gitlab.com/gitlab-org/gitaly/v15/internal/git2go"
"gitlab.com/gitlab-org/gitaly/v15/internal/gitaly/config"
"gitlab.com/gitlab-org/gitaly/v15/internal/gitaly/config/sentry"
"gitlab.com/gitlab-org/gitaly/v15/internal/gitaly/hook"
"gitlab.com/gitlab-org/gitaly/v15/internal/gitaly/linguist"
"gitlab.com/gitlab-org/gitaly/v15/internal/gitaly/maintenance"
"gitlab.com/gitlab-org/gitaly/v15/internal/gitaly/rubyserver"
"gitlab.com/gitlab-org/gitaly/v15/internal/gitaly/server"
"gitlab.com/gitlab-org/gitaly/v15/internal/gitaly/service"
"gitlab.com/gitlab-org/gitaly/v15/internal/gitaly/service/setup"
"gitlab.com/gitlab-org/gitaly/v15/internal/gitaly/storage"
"gitlab.com/gitlab-org/gitaly/v15/internal/gitaly/transaction"
"gitlab.com/gitlab-org/gitaly/v15/internal/gitlab"
"gitlab.com/gitlab-org/gitaly/v15/internal/helper"
"gitlab.com/gitlab-org/gitaly/v15/internal/helper/env"
glog "gitlab.com/gitlab-org/gitaly/v15/internal/log"
"gitlab.com/gitlab-org/gitaly/v15/internal/middleware/limithandler"
"gitlab.com/gitlab-org/gitaly/v15/internal/streamcache"
"gitlab.com/gitlab-org/gitaly/v15/internal/tempdir"
"gitlab.com/gitlab-org/gitaly/v15/internal/version"
"gitlab.com/gitlab-org/labkit/fips"
"gitlab.com/gitlab-org/labkit/monitoring"
"gitlab.com/gitlab-org/labkit/tracing"
"google.golang.org/grpc"
)
var flagVersion = flag.Bool("version", false, "Print version and exit")
func loadConfig(configPath string) (config.Cfg, error) {
cfgFile, err := os.Open(configPath)
if err != nil {
return config.Cfg{}, err
}
defer cfgFile.Close()
cfg, err := config.Load(cfgFile)
if err != nil {
return config.Cfg{}, err
}
if err := cfg.Validate(); err != nil {
return config.Cfg{}, fmt.Errorf("invalid config: %w", err)
}
return cfg, nil
}
func flagUsage() {
fmt.Println(version.GetVersionString())
fmt.Printf("Usage: %v [OPTIONS] configfile\n", os.Args[0])
flag.PrintDefaults()
}
func main() {
flag.Usage = flagUsage
flag.Parse()
// If invoked with -version
if *flagVersion {
fmt.Println(version.GetVersionString())
os.Exit(0)
}
if flag.NArg() != 1 || flag.Arg(0) == "" {
flag.Usage()
os.Exit(2)
}
log.Infof("Starting %s", version.GetVersionString())
fips.Check()
cfg, err := configure(flag.Arg(0))
if err != nil {
log.Fatal(err)
}
log.WithError(run(cfg)).Error("shutting down")
log.Info("Gitaly stopped")
}
func configure(configPath string) (config.Cfg, error) {
cfg, err := loadConfig(configPath)
if err != nil {
return config.Cfg{}, fmt.Errorf("load config: config_path %q: %w", configPath, err)
}
glog.Configure(glog.Loggers, cfg.Logging.Format, cfg.Logging.Level)
if err := cgroups.NewManager(cfg.Cgroups).Setup(); err != nil {
return config.Cfg{}, fmt.Errorf("failed setting up cgroups: %w", err)
}
sentry.ConfigureSentry(version.GetVersion(), sentry.Config(cfg.Logging.Sentry))
cfg.Prometheus.Configure()
tracing.Initialize(tracing.WithServiceName("gitaly"))
preloadLicenseDatabase()
return cfg, nil
}
func preloadLicenseDatabase() {
// the first call to `licensedb.Detect` could be too long
// https://github.com/go-enry/go-license-detector/issues/13
// this is why we're calling it here to preload license database
// on server startup to avoid long initialization on gRPC
// method handling.
licensedb.Preload()
log.Info("License database preloaded")
}
func run(cfg config.Cfg) error {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
runtimeDir, err := config.SetupRuntimeDirectory(cfg, os.Getpid())
if err != nil {
return fmt.Errorf("setup runtime directory: %w", err)
}
cfg.RuntimeDir = runtimeDir
defer func() {
if err := os.RemoveAll(cfg.RuntimeDir); err != nil {
log.Warn("could not clean up runtime dir")
}
}()
b, err := bootstrap.New(promauto.NewCounterVec(
prometheus.CounterOpts{
Name: "gitaly_connections_total",
Help: "Total number of connections to Gitaly",
},
[]string{"type"},
))
if err != nil {
return fmt.Errorf("init bootstrap: %w", err)
}
skipHooks, _ := env.GetBool("GITALY_TESTING_NO_GIT_HOOKS", false)
var commandFactoryOpts []git.ExecCommandFactoryOption
if skipHooks {
commandFactoryOpts = append(commandFactoryOpts, git.WithSkipHooks())
}
gitCmdFactory, cleanup, err := git.NewExecCommandFactory(cfg, commandFactoryOpts...)
if err != nil {
return fmt.Errorf("creating Git command factory: %w", err)
}
defer cleanup()
gitVersion, err := gitCmdFactory.GitVersion(ctx)
if err != nil {
return fmt.Errorf("git version detection: %w", err)
}
if !gitVersion.IsSupported() {
return fmt.Errorf("unsupported Git version: %q", gitVersion)
}
registry := backchannel.NewRegistry()
transactionManager := transaction.NewManager(cfg, registry)
prometheus.MustRegister(transactionManager)
housekeepingManager := housekeeping.NewManager(cfg.Prometheus, transactionManager)
prometheus.MustRegister(housekeepingManager)
hookManager := hook.Manager(hook.DisabledManager{})
locator := config.NewLocator(cfg)
tempdir.StartCleaning(locator, cfg.Storages, time.Hour)
prometheus.MustRegister(gitCmdFactory)
if skipHooks {
log.Warn("skipping GitLab API client creation since hooks are bypassed via GITALY_TESTING_NO_GIT_HOOKS")
} else {
gitlabClient, err := gitlab.NewHTTPClient(glog.Default(), cfg.Gitlab, cfg.TLS, cfg.Prometheus)
if err != nil {
return fmt.Errorf("could not create GitLab API client: %w", err)
}
prometheus.MustRegister(gitlabClient)
hm := hook.NewManager(cfg, locator, gitCmdFactory, transactionManager, gitlabClient)
hookManager = hm
}
conns := client.NewPoolWithOptions(
client.WithDialer(client.HealthCheckDialer(client.DialContext)),
client.WithDialOptions(client.FailOnNonTempDialError()...),
)
defer conns.Close()
catfileCache := catfile.NewCache(cfg)
defer catfileCache.Stop()
prometheus.MustRegister(catfileCache)
diskCache := cache.New(cfg, locator)
prometheus.MustRegister(diskCache)
if err := diskCache.StartWalkers(); err != nil {
return fmt.Errorf("disk cache walkers: %w", err)
}
concurrencyLimitHandler := limithandler.New(
cfg,
limithandler.LimitConcurrencyByRepo,
limithandler.WithConcurrencyLimiters,
)
rateLimitHandler := limithandler.New(
cfg,
limithandler.LimitConcurrencyByRepo,
limithandler.WithRateLimiters(ctx),
)
prometheus.MustRegister(concurrencyLimitHandler, rateLimitHandler)
gitalyServerFactory := server.NewGitalyServerFactory(
cfg,
glog.Default(),
registry,
diskCache,
[]*limithandler.LimiterMiddleware{concurrencyLimitHandler, rateLimitHandler},
)
defer gitalyServerFactory.Stop()
ling, err := linguist.New(cfg, gitCmdFactory)
if err != nil {
return fmt.Errorf("linguist instance creation: %w", err)
}
git2goExecutor := git2go.NewExecutor(cfg, gitCmdFactory, locator)
updaterWithHooks := updateref.NewUpdaterWithHooks(cfg, locator, hookManager, gitCmdFactory, catfileCache)
rubySrv := rubyserver.New(cfg, gitCmdFactory)
if err := rubySrv.Start(); err != nil {
return fmt.Errorf("initialize gitaly-ruby: %v", err)
}
defer rubySrv.Stop()
streamCache := streamcache.New(cfg.PackObjectsCache, glog.Default())
for _, c := range []starter.Config{
{Name: starter.Unix, Addr: cfg.SocketPath, HandoverOnUpgrade: true},
{Name: starter.Unix, Addr: cfg.InternalSocketPath(), HandoverOnUpgrade: false},
{Name: starter.TCP, Addr: cfg.ListenAddr, HandoverOnUpgrade: true},
{Name: starter.TLS, Addr: cfg.TLSListenAddr, HandoverOnUpgrade: true},
} {
if c.Addr == "" {
continue
}
var srv *grpc.Server
if c.HandoverOnUpgrade {
srv, err = gitalyServerFactory.CreateExternal(c.IsSecure())
if err != nil {
return fmt.Errorf("create external gRPC server: %w", err)
}
} else {
srv, err = gitalyServerFactory.CreateInternal()
if err != nil {
return fmt.Errorf("create internal gRPC server: %w", err)
}
}
setup.RegisterAll(srv, &service.Dependencies{
Cfg: cfg,
RubyServer: rubySrv,
GitalyHookManager: hookManager,
TransactionManager: transactionManager,
StorageLocator: locator,
ClientPool: conns,
GitCmdFactory: gitCmdFactory,
Linguist: ling,
CatfileCache: catfileCache,
DiskCache: diskCache,
PackObjectsCache: streamCache,
Git2goExecutor: git2goExecutor,
UpdaterWithHooks: updaterWithHooks,
HousekeepingManager: housekeepingManager,
})
b.RegisterStarter(starter.New(c, srv))
}
if addr := cfg.PrometheusListenAddr; addr != "" {
b.RegisterStarter(func(listen bootstrap.ListenFunc, _ chan<- error, _ *prometheus.CounterVec) error {
l, err := listen("tcp", addr)
if err != nil {
return err
}
log.WithField("address", addr).Info("starting prometheus listener")
go func() {
if err := monitoring.Start(
monitoring.WithListener(l),
monitoring.WithBuildInformation(
version.GetVersion(),
version.GetBuildTime()),
monitoring.WithBuildExtraLabels(
map[string]string{"git_version": gitVersion.String()},
)); err != nil {
log.WithError(err).Error("Unable to serve prometheus")
}
}()
return nil
})
}
for _, shard := range cfg.Storages {
if err := storage.WriteMetadataFile(shard.Path); err != nil {
// TODO should this be a return? https://gitlab.com/gitlab-org/gitaly/issues/1893
log.WithError(err).Error("Unable to write gitaly metadata file")
}
}
if err := b.Start(); err != nil {
return fmt.Errorf("unable to start the bootstrap: %v", err)
}
shutdownWorkers, err := maintenance.StartWorkers(
ctx,
glog.Default(),
maintenance.DailyOptimizationWorker(cfg, maintenance.OptimizerFunc(func(ctx context.Context, repo repository.GitRepo) error {
return housekeepingManager.OptimizeRepository(ctx, localrepo.New(locator, gitCmdFactory, catfileCache, repo))
})),
)
if err != nil {
return fmt.Errorf("initialize auxiliary workers: %v", err)
}
defer shutdownWorkers()
defer func() {
if err := cgroups.NewManager(cfg.Cgroups).Cleanup(); err != nil {
log.WithError(err).Warn("error cleaning up cgroups")
}
}()
gracefulStopTicker := helper.NewTimerTicker(cfg.GracefulRestartTimeout.Duration())
defer gracefulStopTicker.Stop()
return b.Wait(gracefulStopTicker, gitalyServerFactory.GracefulStop)
}
|