func mkTestTagStore(root string, t *testing.T) *TagStore {
driver, err := graphdriver.New(root, nil, nil, nil)
if err != nil {
t.Fatal(err)
}
graph, err := NewGraph(root, driver, nil, nil)
if err != nil {
t.Fatal(err)
}
trust, err := trust.NewStore(root + "/trust")
if err != nil {
t.Fatal(err)
}
tagCfg := &TagStoreConfig{
Graph: graph,
Events: events.New(),
Trust: trust,
}
store, err := NewTagStore(path.Join(root, "tags"), tagCfg)
if err != nil {
t.Fatal(err)
}
officialArchive, err := fakeTar()
if err != nil {
t.Fatal(err)
}
img := &image.Image{ID: testOfficialImageID}
if err := graph.Register(img, officialArchive); err != nil {
t.Fatal(err)
}
if err := store.Tag(testOfficialImageName, "", testOfficialImageID, false); err != nil {
t.Fatal(err)
}
privateArchive, err := fakeTar()
if err != nil {
t.Fatal(err)
}
img = &image.Image{ID: testPrivateImageID}
if err := graph.Register(img, privateArchive); err != nil {
t.Fatal(err)
}
if err := store.Tag(testPrivateImageName, "", testPrivateImageID, false); err != nil {
t.Fatal(err)
}
if err := store.SetDigest(testPrivateImageName, testPrivateImageDigest, testPrivateImageID); err != nil {
t.Fatal(err)
}
return store
}
// NewDaemon sets up everything for the daemon to be able to service
// requests from the webserver.
func NewDaemon(config *Config, registryService *registry.Service) (daemon *Daemon, err error) {
setDefaultMtu(config)
// Ensure we have compatible configuration options
if err := checkConfigOptions(config); err != nil {
return nil, err
}
// Do we have a disabled network?
config.DisableBridge = isBridgeNetworkDisabled(config)
// Verify the platform is supported as a daemon
if !platformSupported {
return nil, errSystemNotSupported
}
// Validate platform-specific requirements
if err := checkSystem(); err != nil {
return nil, err
}
// set up SIGUSR1 handler on Unix-like systems, or a Win32 global event
// on Windows to dump Go routine stacks
setupDumpStackTrap()
// get the canonical path to the Docker root directory
var realRoot string
if _, err := os.Stat(config.Root); err != nil && os.IsNotExist(err) {
realRoot = config.Root
} else {
realRoot, err = fileutils.ReadSymlinkedDirectory(config.Root)
if err != nil {
return nil, fmt.Errorf("Unable to get the full path to root (%s): %s", config.Root, err)
}
}
config.Root = realRoot
// Create the root directory if it doesn't exists
if err := system.MkdirAll(config.Root, 0700); err != nil {
return nil, err
}
// set up the tmpDir to use a canonical path
tmp, err := tempDir(config.Root)
if err != nil {
return nil, fmt.Errorf("Unable to get the TempDir under %s: %s", config.Root, err)
}
realTmp, err := fileutils.ReadSymlinkedDirectory(tmp)
if err != nil {
return nil, fmt.Errorf("Unable to get the full path to the TempDir (%s): %s", tmp, err)
}
os.Setenv("TMPDIR", realTmp)
// Set the default driver
graphdriver.DefaultDriver = config.GraphDriver
// Load storage driver
driver, err := graphdriver.New(config.Root, config.GraphOptions)
if err != nil {
return nil, fmt.Errorf("error initializing graphdriver: %v", err)
}
logrus.Debugf("Using graph driver %s", driver)
d := &Daemon{}
d.driver = driver
// Ensure the graph driver is shutdown at a later point
defer func() {
if err != nil {
if err := d.Shutdown(); err != nil {
logrus.Error(err)
}
}
}()
// Verify logging driver type
if config.LogConfig.Type != "none" {
if _, err := logger.GetLogDriver(config.LogConfig.Type); err != nil {
return nil, fmt.Errorf("error finding the logging driver: %v", err)
}
}
logrus.Debugf("Using default logging driver %s", config.LogConfig.Type)
// Configure and validate the kernels security support
if err := configureKernelSecuritySupport(config, d.driver.String()); err != nil {
return nil, err
}
daemonRepo := filepath.Join(config.Root, "containers")
if err := system.MkdirAll(daemonRepo, 0700); err != nil {
return nil, err
}
// Migrate the container if it is aufs and aufs is enabled
if err := migrateIfDownlevel(d.driver, config.Root); err != nil {
return nil, err
}
logrus.Debug("Creating images graph")
g, err := graph.NewGraph(filepath.Join(config.Root, "graph"), d.driver)
if err != nil {
return nil, err
}
// Configure the volumes driver
volStore, err := configureVolumes(config)
if err != nil {
return nil, err
}
trustKey, err := api.LoadOrCreateTrustKey(config.TrustKeyPath)
if err != nil {
return nil, err
}
trustDir := filepath.Join(config.Root, "trust")
if err := system.MkdirAll(trustDir, 0700); err != nil {
return nil, err
}
trustService, err := trust.NewStore(trustDir)
if err != nil {
return nil, fmt.Errorf("could not create trust store: %s", err)
}
eventsService := events.New()
logrus.Debug("Creating repository list")
tagCfg := &graph.TagStoreConfig{
Graph: g,
Key: trustKey,
Registry: registryService,
Events: eventsService,
Trust: trustService,
}
repositories, err := graph.NewTagStore(filepath.Join(config.Root, "repositories-"+d.driver.String()), tagCfg)
if err != nil {
return nil, fmt.Errorf("Couldn't create Tag store repositories-%s: %s", d.driver.String(), err)
}
if restorer, ok := d.driver.(graphdriver.ImageRestorer); ok {
if _, err := restorer.RestoreCustomImages(repositories, g); err != nil {
return nil, fmt.Errorf("Couldn't restore custom images: %s", err)
}
}
d.netController, err = initNetworkController(config)
if err != nil {
return nil, fmt.Errorf("Error initializing network controller: %v", err)
}
graphdbPath := filepath.Join(config.Root, "linkgraph.db")
graph, err := graphdb.NewSqliteConn(graphdbPath)
if err != nil {
return nil, err
}
d.containerGraphDB = graph
var sysInitPath string
if config.ExecDriver == "lxc" {
initPath, err := configureSysInit(config)
if err != nil {
return nil, err
}
sysInitPath = initPath
}
sysInfo := sysinfo.New(false)
// Check if Devices cgroup is mounted, it is hard requirement for container security,
// on Linux/FreeBSD.
if runtime.GOOS != "windows" && !sysInfo.CgroupDevicesEnabled {
return nil, fmt.Errorf("Devices cgroup isn't mounted")
}
ed, err := execdrivers.NewDriver(config.ExecDriver, config.ExecOptions, config.ExecRoot, config.Root, sysInitPath, sysInfo)
if err != nil {
return nil, err
}
d.ID = trustKey.PublicKey().KeyID()
d.repository = daemonRepo
d.containers = &contStore{s: make(map[string]*Container)}
d.execCommands = newExecStore()
d.graph = g
d.repositories = repositories
d.idIndex = truncindex.NewTruncIndex([]string{})
d.configStore = config
d.sysInitPath = sysInitPath
d.execDriver = ed
d.statsCollector = newStatsCollector(1 * time.Second)
d.defaultLogConfig = config.LogConfig
d.RegistryService = registryService
d.EventsService = eventsService
d.volumes = volStore
d.root = config.Root
go d.execCommandGC()
if err := d.restore(); err != nil {
return nil, err
}
return d, nil
}