Merge pull request #618 from restic/rework-ci-fuse-tests

Cleanup CI tests for fuse

.travis.yml

@@ -3,16 +3,29 @@ sudo: false
 
 go:
   - 1.6.3
-  - 1.7
+  - 1.7.1
 
 os:
   - linux
   - osx
 
+env:
+  matrix:
+    RESTIC_TEST_FUSE=0
+
 matrix:
   exclude:
     - os: osx
       go: 1.6.3
+    - os: linux
+      go: 1.7.1
+  include:
+    - os: linux
+      go: 1.7.1
+      sudo: true
+      env:
+        RESTIC_TEST_FUSE=1
+
 
 notifications:
   irc:

run_integration_tests.go

@@ -165,19 +165,6 @@ func (env *TravisEnvironment) Prepare() error {
 		return err
 	}
 
-	if runtime.GOOS == "darwin" {
-		// install the libraries necessary for fuse
-		for _, cmd := range [][]string{
-			{"brew", "update"},
-			{"brew", "tap", "caskroom/cask"},
-			{"brew", "cask", "install", "osxfuse"},
-		} {
-			if err := run(cmd[0], cmd[1:]...); err != nil {
-				return err
-			}
-		}
-	}
-
 	if *runCrossCompile && !(runtime.Version() < "go1.7") {
 		// only test cross compilation on linux with Travis
 		if err := run("go", "get", "github.com/mitchellh/gox"); err != nil {
@@ -314,8 +301,8 @@ func StartBackgroundCommand(env map[string]string, cmd string, args ...string) (
 
 // RunTests starts the tests for Travis.
 func (env *TravisEnvironment) RunTests() error {
-	// run fuse tests on darwin
-	if runtime.GOOS != "darwin" {
+	// do not run fuse tests on darwin
+	if runtime.GOOS == "darwin" {
 		msg("skip fuse integration tests on %v\n", runtime.GOOS)
 		os.Setenv("RESTIC_TEST_FUSE", "0")
 	}

src/cmds/restic/cleanup.go

@@ -32,6 +32,9 @@ func AddCleanupHandler(f func() error) {
 	cleanupHandlers.Lock()
 	defer cleanupHandlers.Unlock()
 
+	// reset the done flag for integration tests
+	cleanupHandlers.done = false
+
 	cleanupHandlers.list = append(cleanupHandlers.list, f)
 }
 
@@ -51,6 +54,7 @@ func RunCleanupHandlers() {
 			fmt.Fprintf(stderr, "error in cleanup handler: %v\n", err)
 		}
 	}
+	cleanupHandlers.list = nil
 }
 
 // CleanupHandler handles the SIGINT signal.

src/cmds/restic/cmd_mount.go

@@ -6,6 +6,7 @@ package main
 import (
 	"os"
 
+	"restic/debug"
 	"restic/errors"
 
 	resticfs "restic/fs"
@@ -19,8 +20,6 @@ type CmdMount struct {
 	Root bool `long:"owner-root" description:"use 'root' as the owner of files and dirs" default:"false"`
 
 	global *GlobalOptions
-	ready  chan struct{}
-	done   chan struct{}
 }
 
 func init() {
@@ -29,8 +28,6 @@ func init() {
 		"The mount command mounts a repository read-only to a given directory",
 		&CmdMount{
 			global: &globalOpts,
-			ready:  make(chan struct{}, 1),
-			done:   make(chan struct{}),
 		})
 	if err != nil {
 		panic(err)
@@ -41,10 +38,9 @@ func (cmd CmdMount) Usage() string {
 	return "MOUNTPOINT"
 }
 
-func (cmd CmdMount) Execute(args []string) error {
-	if len(args) == 0 {
-		return errors.Fatalf("wrong number of parameters, Usage: %s", cmd.Usage())
-	}
+func (cmd CmdMount) Mount(mountpoint string) error {
+	debug.Log("mount", "start mount")
+	defer debug.Log("mount", "finish mount")
 
 	repo, err := cmd.global.OpenRepository()
 	if err != nil {
@@ -56,7 +52,6 @@ func (cmd CmdMount) Execute(args []string) error {
 		return err
 	}
 
-	mountpoint := args[0]
 	if _, err := resticfs.Stat(mountpoint); os.IsNotExist(errors.Cause(err)) {
 		cmd.global.Verbosef("Mountpoint %s doesn't exist, creating it\n", mountpoint)
 		err = resticfs.Mkdir(mountpoint, os.ModeDir|0700)
@@ -76,34 +71,38 @@ func (cmd CmdMount) Execute(args []string) error {
 	root := fs.Tree{}
 	root.Add("snapshots", fuse.NewSnapshotsDir(repo, cmd.Root))
 
-	cmd.global.Printf("Now serving %s at %s\n", repo.Backend().Location(), mountpoint)
-	cmd.global.Printf("Don't forget to umount after quitting!\n")
-
-	AddCleanupHandler(func() error {
-		return systemFuse.Unmount(mountpoint)
-	})
-
-	cmd.ready <- struct{}{}
-
-	errServe := make(chan error)
-	go func() {
+	debug.Log("mount", "serving mount at %v", mountpoint)
 	err = fs.Serve(c, &root)
 	if err != nil {
-			errServe <- err
+		return err
 	}
 
 	<-c.Ready
-		errServe <- c.MountError
-	}()
+	return c.MountError
+}
 
-	select {
-	case err := <-errServe:
-		return err
-	case <-cmd.done:
-		err := systemFuse.Unmount(mountpoint)
+func (cmd CmdMount) Umount(mountpoint string) error {
+	return systemFuse.Unmount(mountpoint)
+}
+
+func (cmd CmdMount) Execute(args []string) error {
+	if len(args) == 0 {
+		return errors.Fatalf("wrong number of parameters, Usage: %s", cmd.Usage())
+	}
+
+	mountpoint := args[0]
+
+	AddCleanupHandler(func() error {
+		debug.Log("mount", "running umount cleanup handler for mount at %v", mountpoint)
+		err := cmd.Umount(mountpoint)
 		if err != nil {
-			cmd.global.Printf("Error umounting: %s\n", err)
-		}
-		return c.Close()
+			cmd.global.Warnf("unable to umount (maybe already umounted?): %v\n", err)
 		}
+		return nil
+	})
+
+	cmd.global.Printf("Now serving the repository at %s\n", mountpoint)
+	cmd.global.Printf("Don't forget to umount after quitting!\n")
+
+	return cmd.Mount(mountpoint)
 }

src/cmds/restic/integration_fuse_test.go

@@ -10,8 +10,6 @@ import (
 	"testing"
 	"time"
 
-	"restic/errors"
-
 	"restic"
 	"restic/repository"
 	. "restic/test"
@@ -23,46 +21,66 @@ const (
 	mountTestSubdir = "snapshots"
 )
 
+func snapshotsDirExists(t testing.TB, dir string) bool {
+	f, err := os.Open(filepath.Join(dir, mountTestSubdir))
+	if err != nil && os.IsNotExist(err) {
+		return false
+	}
+
+	if err != nil {
+		t.Error(err)
+	}
+
+	if err := f.Close(); err != nil {
+		t.Error(err)
+	}
+
+	return true
+}
+
 // waitForMount blocks (max mountWait * mountSleep) until the subdir
 // "snapshots" appears in the dir.
-func waitForMount(dir string) error {
+func waitForMount(t testing.TB, dir string) {
 	for i := 0; i < mountWait; i++ {
-		f, err := os.Open(dir)
-		if err != nil {
-			return err
-		}
-
-		names, err := f.Readdirnames(-1)
-		if err != nil {
-			return err
-		}
-
-		if err = f.Close(); err != nil {
-			return err
-		}
-
-		for _, name := range names {
-			if name == mountTestSubdir {
-				return nil
-			}
+		if snapshotsDirExists(t, dir) {
+			t.Log("mounted directory is ready")
+			return
 		}
 
 		time.Sleep(mountSleep)
 	}
 
-	return errors.Fatalf("subdir %q of dir %s never appeared", mountTestSubdir, dir)
+	t.Errorf("subdir %q of dir %s never appeared", mountTestSubdir, dir)
 }
 
-func cmdMount(t testing.TB, global GlobalOptions, dir string, ready, done chan struct{}) {
-	defer func() {
-		ready <- struct{}{}
-	}()
-
-	cmd := &CmdMount{global: &global, ready: ready, done: done}
-	OK(t, cmd.Execute([]string{dir}))
-	if TestCleanupTempDirs {
-		RemoveAll(t, dir)
+func mount(t testing.TB, global GlobalOptions, dir string) {
+	cmd := &CmdMount{global: &global}
+	OK(t, cmd.Mount(dir))
 }
+
+func umount(t testing.TB, global GlobalOptions, dir string) {
+	cmd := &CmdMount{global: &global}
+
+	var err error
+	for i := 0; i < mountWait; i++ {
+		if err = cmd.Umount(dir); err == nil {
+			t.Logf("directory %v umounted", dir)
+			return
+		}
+
+		time.Sleep(mountSleep)
+	}
+
+	t.Errorf("unable to umount dir %v, last error was: %v", dir, err)
+}
+
+func listSnapshots(t testing.TB, dir string) []string {
+	snapshotsDir, err := os.Open(filepath.Join(dir, "snapshots"))
+	OK(t, err)
+	names, err := snapshotsDir.Readdirnames(-1)
+	OK(t, err)
+	OK(t, snapshotsDir.Close())
+	return names
 }
 
 func TestMount(t *testing.T) {
@@ -70,11 +88,22 @@ func TestMount(t *testing.T) {
 		t.Skip("Skipping fuse tests")
 	}
 
-	checkSnapshots := func(repo *repository.Repository, mountpoint string, snapshotIDs []restic.ID) {
-		snapshotsDir, err := os.Open(filepath.Join(mountpoint, "snapshots"))
-		OK(t, err)
-		namesInSnapshots, err := snapshotsDir.Readdirnames(-1)
-		OK(t, err)
+	withTestEnvironment(t, func(env *testEnvironment, global GlobalOptions) {
+		checkSnapshots := func(repo *repository.Repository, mountpoint string, snapshotIDs restic.IDs) {
+			t.Logf("checking for %d snapshots: %v", len(snapshotIDs), snapshotIDs)
+			go mount(t, global, mountpoint)
+			waitForMount(t, mountpoint)
+			defer umount(t, global, mountpoint)
+
+			if !snapshotsDirExists(t, mountpoint) {
+				t.Fatal(`virtual directory "snapshots" doesn't exist`)
+			}
+
+			ids := listSnapshots(t, env.repo)
+			t.Logf("found %v snapshots in repo: %v", len(ids), ids)
+
+			namesInSnapshots := listSnapshots(t, mountpoint)
+			t.Logf("found %v snapshots in fuse mount: %v", len(namesInSnapshots), namesInSnapshots)
 			Assert(t,
 				len(namesInSnapshots) == len(snapshotIDs),
 				"Invalid number of snapshots: expected %d, got %d", len(snapshotIDs), len(namesInSnapshots))
@@ -94,10 +123,8 @@ func TestMount(t *testing.T) {
 			for name, present := range namesMap {
 				Assert(t, present, "Directory %s is present in fuse dir but is not a snapshot", name)
 			}
-		OK(t, snapshotsDir.Close())
 		}
 
-	withTestEnvironment(t, func(env *testEnvironment, global GlobalOptions) {
 		cmdInit(t, global)
 		repo, err := global.OpenRepository()
 		OK(t, err)
@@ -108,32 +135,9 @@ func TestMount(t *testing.T) {
 		// We remove the mountpoint now to check that cmdMount creates it
 		RemoveAll(t, mountpoint)
 
-		ready := make(chan struct{}, 2)
-		done := make(chan struct{})
-		go cmdMount(t, global, mountpoint, ready, done)
-		<-ready
-		defer close(done)
-		OK(t, waitForMount(mountpoint))
-
-		mountpointDir, err := os.Open(mountpoint)
-		OK(t, err)
-		names, err := mountpointDir.Readdirnames(-1)
-		OK(t, err)
-		Assert(t, len(names) == 1 && names[0] == "snapshots", `The fuse virtual directory "snapshots" doesn't exist`)
-		OK(t, mountpointDir.Close())
-
 		checkSnapshots(repo, mountpoint, []restic.ID{})
 
-		datafile := filepath.Join("testdata", "backup-data.tar.gz")
-		fd, err := os.Open(datafile)
-		if os.IsNotExist(errors.Cause(err)) {
-			t.Skipf("unable to find data file %q, skipping", datafile)
-			return
-		}
-		OK(t, err)
-		OK(t, fd.Close())
-
-		SetupTarTestFixture(t, env.testdata, datafile)
+		SetupTarTestFixture(t, env.testdata, filepath.Join("testdata", "backup-data.tar.gz"))
 
 		// first backup
 		cmdBackup(t, global, []string{env.testdata}, nil)

src/restic/fuse/snapshot.go

@@ -4,6 +4,7 @@
 package fuse
 
 import (
+	"fmt"
 	"os"
 	"sync"
 	"time"
@@ -65,11 +66,24 @@ func (sn *SnapshotsDir) updateCache(ctx context.Context) error {
 	defer sn.Unlock()
 
 	for id := range sn.repo.List(restic.SnapshotFile, ctx.Done()) {
+		debug.Log("SnapshotsDir.List", "found snapshot id %v", id.Str())
 		snapshot, err := restic.LoadSnapshot(sn.repo, id)
 		if err != nil {
 			return err
 		}
-		sn.knownSnapshots[snapshot.Time.Format(time.RFC3339)] = SnapshotWithId{snapshot, id}
+
+		timestamp := snapshot.Time.Format(time.RFC3339)
+
+		for i := 1; ; i++ {
+			if _, ok := sn.knownSnapshots[timestamp]; !ok {
+				break
+			}
+
+			timestamp = fmt.Sprintf("%s-%d", snapshot.Time.Format(time.RFC3339), i)
+		}
+
+		debug.Log("SnapshotsDir.List", "  add %v as dir %v", id.Str(), timestamp)
+		sn.knownSnapshots[timestamp] = SnapshotWithId{snapshot, id}
 	}
 	return nil
 }