lock: new lock type "file"

it is a wrapper around containers/storage file locking.

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>

1 files changed, 74 insertions, 0 deletions

diff --git a/libpod/lock/file/file_lock_test.go b/libpod/lock/file/file_lock_test.go
new file mode 100644
index 000000000..6320d6b70
--- /dev/null
+++ b/libpod/lock/file/file_lock_test.go
@@ -0,0 +1,74 @@
+package file
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+// Test that creating and destroying locks work
+func TestCreateAndDeallocate(t *testing.T) {
+	d, err := ioutil.TempDir("", "filelock")
+	assert.NoError(t, err)
+	defer os.RemoveAll(d)
+
+	l, err := OpenFileLock(filepath.Join(d, "locks"))
+	assert.Error(t, err)
+
+	l, err = CreateFileLock(filepath.Join(d, "locks"))
+	assert.NoError(t, err)
+
+	lock, err := l.AllocateLock()
+	assert.NoError(t, err)
+
+	err = l.AllocateGivenLock(lock)
+	assert.Error(t, err)
+
+	err = l.DeallocateLock(lock)
+	assert.NoError(t, err)
+
+	err = l.AllocateGivenLock(lock)
+	assert.NoError(t, err)
+
+	err = l.DeallocateAllLocks()
+	assert.NoError(t, err)
+
+	err = l.AllocateGivenLock(lock)
+	assert.NoError(t, err)
+
+	err = l.DeallocateAllLocks()
+	assert.NoError(t, err)
+}
+
+// Test that creating and destroying locks work
+func TestLockAndUnlock(t *testing.T) {
+	d, err := ioutil.TempDir("", "filelock")
+	assert.NoError(t, err)
+	defer os.RemoveAll(d)
+
+	l, err := CreateFileLock(filepath.Join(d, "locks"))
+	assert.NoError(t, err)
+
+	lock, err := l.AllocateLock()
+	assert.NoError(t, err)
+
+	err = l.LockFileLock(lock)
+	assert.NoError(t, err)
+
+	lslocks, err := exec.LookPath("lslocks")
+	if err == nil {
+		lockPath := l.getLockPath(lock)
+		out, err := exec.Command(lslocks, "--json", "-p", fmt.Sprintf("%d", os.Getpid())).CombinedOutput()
+		assert.NoError(t, err)
+
+		assert.Contains(t, string(out), lockPath)
+	}
+
+	err = l.UnlockFileLock(lock)
+	assert.NoError(t, err)
+}