/
main.go
174 lines (138 loc) · 4.08 KB
/
main.go
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package werf
import (
"context"
"fmt"
"os"
"path/filepath"
"runtime"
"github.com/werf/lockgate"
"github.com/werf/lockgate/pkg/file_lock"
"github.com/werf/lockgate/pkg/file_locker"
"github.com/werf/logboek"
)
var Version = "dev"
var (
tmpDir, homeDir string
sharedContextDir string
localCacheDir string
serviceDir string
hostLocker lockgate.Locker
)
func GetSharedContextDir() string {
if sharedContextDir == "" {
panic("bug: init required!")
}
return sharedContextDir
}
func GetLocalCacheDir() string {
if localCacheDir == "" {
panic("bug: init required!")
}
return localCacheDir
}
func GetServiceDir() string {
if serviceDir == "" {
panic("bug: init required!")
}
return serviceDir
}
func GetHomeDir() string {
if homeDir == "" {
panic("bug: init required!")
}
return homeDir
}
func GetTmpDir() string {
if tmpDir == "" {
panic("bug: init required!")
}
return tmpDir
}
func GetStagesStorageCacheDir() string {
return filepath.Join(GetSharedContextDir(), "storage", "stages_storage_cache", "1")
}
func GetHostLocker() lockgate.Locker {
return hostLocker
}
func SetupLockerDefaultOptions(ctx context.Context, opts lockgate.AcquireOptions) lockgate.AcquireOptions {
if opts.OnWaitFunc == nil {
opts.OnWaitFunc = DefaultLockerOnWait(ctx)
}
if opts.OnLostLeaseFunc == nil {
opts.OnLostLeaseFunc = DefaultLockerOnLostLease
}
return opts
}
func WithHostLock(ctx context.Context, lockName string, opts lockgate.AcquireOptions, f func() error) error {
return lockgate.WithAcquire(GetHostLocker(), lockName, SetupLockerDefaultOptions(ctx, opts), func(_ bool) error {
return f()
})
}
func AcquireHostLock(ctx context.Context, lockName string, opts lockgate.AcquireOptions) (bool, lockgate.LockHandle, error) {
return GetHostLocker().Acquire(lockName, SetupLockerDefaultOptions(ctx, opts))
}
func ReleaseHostLock(lock lockgate.LockHandle) error {
return GetHostLocker().Release(lock)
}
func DefaultLockerOnWait(ctx context.Context) func(lockName string, doWait func() error) error {
return func(lockName string, doWait func() error) error {
logProcessMsg := fmt.Sprintf("Waiting for locked %q", lockName)
return logboek.Context(ctx).Info().LogProcessInline(logProcessMsg).DoError(doWait)
}
}
func DefaultLockerOnLostLease(lock lockgate.LockHandle) error {
panic(fmt.Sprintf("Locker has lost lease for locked %q uuid %s. Will crash current process immediately!", lock.LockName, lock.UUID))
}
func Init(tmpDirOption, homeDirOption string) error {
val, ok := os.LookupEnv("WERF_TMP_DIR")
switch {
case ok:
tmpDir = val
case tmpDirOption != "":
tmpDir = tmpDirOption
default:
tmpDir = os.TempDir()
}
if runtime.GOOS == "darwin" || runtime.GOOS == "windows" {
dir, err := filepath.EvalSymlinks(tmpDir)
if err != nil {
return fmt.Errorf("eval symlinks of path %s failed: %w", tmpDir, err)
}
tmpDir = dir
}
val, ok = os.LookupEnv("WERF_HOME")
switch {
case ok:
homeDir = val
case homeDirOption != "":
homeDir = homeDirOption
default:
userHomeDir, err := os.UserHomeDir()
if err != nil {
return fmt.Errorf("get user home dir failed: %w", err)
}
homeDir = filepath.Join(userHomeDir, ".werf")
}
// TODO: options + update purgeHomeWerfFiles
sharedContextDir = filepath.Join(homeDir, "shared_context")
localCacheDir = filepath.Join(homeDir, "local_cache")
serviceDir = filepath.Join(homeDir, "service")
file_lock.LegacyHashFunction = true
if locker, err := file_locker.NewFileLocker(filepath.Join(serviceDir, "locks")); err != nil {
return fmt.Errorf("error creating werf host file locker: %w", err)
} else {
hostLocker = locker
}
if err := SetWerfFirstRunAt(context.Background()); err != nil {
return fmt.Errorf("error setting werf first run at timestamp: %w", err)
}
if err := SetWerfLastRunAt(context.Background()); err != nil {
return fmt.Errorf("error setting werf last run at timestamp: %w", err)
}
if os.Getenv("WERF_ORIGINAL_EXECUTABLE") == "" {
if err := os.Setenv("WERF_ORIGINAL_EXECUTABLE", os.Args[0]); err != nil {
return fmt.Errorf("error setting werf original args env var: %w", err)
}
}
return nil
}