distribution/storagedriver/testsuites/testsuites.go
Stephen J Day 2037b1d6bf Update testsuite with storagedriver interface changes
This change updates the testsuite to migrate to the new driver interface. This
includes the new Stat call, changes to int64 over uint64 and the changes to the
WriteStream signature. Several test cases have been added to vet
implementations against various assumptions.
2014-12-03 16:37:46 -08:00

570 lines
18 KiB
Go

package testsuites
import (
"bytes"
"io/ioutil"
"math/rand"
"os"
"path"
"sort"
"sync"
"testing"
"time"
"github.com/docker/docker-registry/storagedriver"
"github.com/docker/docker-registry/storagedriver/ipc"
"gopkg.in/check.v1"
)
// Test hooks up gocheck into the "go test" runner.
func Test(t *testing.T) { check.TestingT(t) }
// RegisterInProcessSuite registers an in-process storage driver test suite with
// the go test runner.
func RegisterInProcessSuite(driverConstructor DriverConstructor, skipCheck SkipCheck) {
check.Suite(&DriverSuite{
Constructor: driverConstructor,
SkipCheck: skipCheck,
})
}
// RegisterIPCSuite registers a storage driver test suite which runs the named
// driver as a child process with the given parameters.
func RegisterIPCSuite(driverName string, ipcParams map[string]string, skipCheck SkipCheck) {
suite := &DriverSuite{
Constructor: func() (storagedriver.StorageDriver, error) {
d, err := ipc.NewDriverClient(driverName, ipcParams)
if err != nil {
return nil, err
}
err = d.Start()
if err != nil {
return nil, err
}
return d, nil
},
SkipCheck: skipCheck,
}
suite.Teardown = func() error {
if suite.StorageDriver == nil {
return nil
}
driverClient := suite.StorageDriver.(*ipc.StorageDriverClient)
return driverClient.Stop()
}
check.Suite(suite)
}
// SkipCheck is a function used to determine if a test suite should be skipped.
// If a SkipCheck returns a non-empty skip reason, the suite is skipped with
// the given reason.
type SkipCheck func() (reason string)
// NeverSkip is a default SkipCheck which never skips the suite.
var NeverSkip SkipCheck = func() string { return "" }
// DriverConstructor is a function which returns a new
// storagedriver.StorageDriver.
type DriverConstructor func() (storagedriver.StorageDriver, error)
// DriverTeardown is a function which cleans up a suite's
// storagedriver.StorageDriver.
type DriverTeardown func() error
// DriverSuite is a gocheck test suite designed to test a
// storagedriver.StorageDriver.
// The intended way to create a DriverSuite is with RegisterInProcessSuite or
// RegisterIPCSuite.
type DriverSuite struct {
Constructor DriverConstructor
Teardown DriverTeardown
SkipCheck
storagedriver.StorageDriver
}
// SetUpSuite sets up the gocheck test suite.
func (suite *DriverSuite) SetUpSuite(c *check.C) {
if reason := suite.SkipCheck(); reason != "" {
c.Skip(reason)
}
d, err := suite.Constructor()
c.Assert(err, check.IsNil)
suite.StorageDriver = d
}
// TearDownSuite tears down the gocheck test suite.
func (suite *DriverSuite) TearDownSuite(c *check.C) {
if suite.Teardown != nil {
err := suite.Teardown()
c.Assert(err, check.IsNil)
}
}
// TestWriteRead1 tests a simple write-read workflow.
func (suite *DriverSuite) TestWriteRead1(c *check.C) {
filename := randomString(32)
contents := []byte("a")
suite.writeReadCompare(c, filename, contents)
}
// TestWriteRead2 tests a simple write-read workflow with unicode data.
func (suite *DriverSuite) TestWriteRead2(c *check.C) {
filename := randomString(32)
contents := []byte("\xc3\x9f")
suite.writeReadCompare(c, filename, contents)
}
// TestWriteRead3 tests a simple write-read workflow with a small string.
func (suite *DriverSuite) TestWriteRead3(c *check.C) {
filename := randomString(32)
contents := []byte(randomString(32))
suite.writeReadCompare(c, filename, contents)
}
// TestWriteRead4 tests a simple write-read workflow with 1MB of data.
func (suite *DriverSuite) TestWriteRead4(c *check.C) {
filename := randomString(32)
contents := []byte(randomString(1024 * 1024))
suite.writeReadCompare(c, filename, contents)
}
// TestReadNonexistent tests reading content from an empty path.
func (suite *DriverSuite) TestReadNonexistent(c *check.C) {
filename := randomString(32)
_, err := suite.StorageDriver.GetContent(filename)
c.Assert(err, check.NotNil)
c.Assert(err, check.FitsTypeOf, storagedriver.PathNotFoundError{})
}
// TestWriteReadStreams1 tests a simple write-read streaming workflow.
func (suite *DriverSuite) TestWriteReadStreams1(c *check.C) {
filename := randomString(32)
contents := []byte("a")
suite.writeReadCompareStreams(c, filename, contents)
}
// TestWriteReadStreams2 tests a simple write-read streaming workflow with
// unicode data.
func (suite *DriverSuite) TestWriteReadStreams2(c *check.C) {
filename := randomString(32)
contents := []byte("\xc3\x9f")
suite.writeReadCompareStreams(c, filename, contents)
}
// TestWriteReadStreams3 tests a simple write-read streaming workflow with a
// small amount of data.
func (suite *DriverSuite) TestWriteReadStreams3(c *check.C) {
filename := randomString(32)
contents := []byte(randomString(32))
suite.writeReadCompareStreams(c, filename, contents)
}
// TestWriteReadStreams4 tests a simple write-read streaming workflow with 1MB
// of data.
func (suite *DriverSuite) TestWriteReadStreams4(c *check.C) {
filename := randomString(32)
contents := []byte(randomString(1024 * 1024))
suite.writeReadCompareStreams(c, filename, contents)
}
// TestReadStreamWithOffset tests that the appropriate data is streamed when
// reading with a given offset.
func (suite *DriverSuite) TestReadStreamWithOffset(c *check.C) {
filename := randomString(32)
defer suite.StorageDriver.Delete(filename)
chunkSize := int64(32)
contentsChunk1 := []byte(randomString(chunkSize))
contentsChunk2 := []byte(randomString(chunkSize))
contentsChunk3 := []byte(randomString(chunkSize))
err := suite.StorageDriver.PutContent(filename, append(append(contentsChunk1, contentsChunk2...), contentsChunk3...))
c.Assert(err, check.IsNil)
reader, err := suite.StorageDriver.ReadStream(filename, 0)
c.Assert(err, check.IsNil)
defer reader.Close()
readContents, err := ioutil.ReadAll(reader)
c.Assert(err, check.IsNil)
c.Assert(readContents, check.DeepEquals, append(append(contentsChunk1, contentsChunk2...), contentsChunk3...))
reader, err = suite.StorageDriver.ReadStream(filename, chunkSize)
c.Assert(err, check.IsNil)
defer reader.Close()
readContents, err = ioutil.ReadAll(reader)
c.Assert(err, check.IsNil)
c.Assert(readContents, check.DeepEquals, append(contentsChunk2, contentsChunk3...))
reader, err = suite.StorageDriver.ReadStream(filename, chunkSize*2)
c.Assert(err, check.IsNil)
defer reader.Close()
readContents, err = ioutil.ReadAll(reader)
c.Assert(err, check.IsNil)
c.Assert(readContents, check.DeepEquals, contentsChunk3)
}
// TestContinueStreamAppend tests that a stream write can be appended to without
// corrupting the data.
func (suite *DriverSuite) TestContinueStreamAppend(c *check.C) {
filename := randomString(32)
defer suite.StorageDriver.Delete(filename)
chunkSize := int64(10 * 1024 * 1024)
contentsChunk1 := []byte(randomString(chunkSize))
contentsChunk2 := []byte(randomString(chunkSize))
contentsChunk3 := []byte(randomString(chunkSize))
contentsChunk4 := []byte(randomString(chunkSize))
zeroChunk := make([]byte, int64(chunkSize))
fullContents := append(append(contentsChunk1, contentsChunk2...), contentsChunk3...)
nn, err := suite.StorageDriver.WriteStream(filename, 0, bytes.NewReader(contentsChunk1))
c.Assert(err, check.IsNil)
c.Assert(nn, check.Equals, int64(len(contentsChunk1)))
fi, err := suite.StorageDriver.Stat(filename)
c.Assert(err, check.IsNil)
c.Assert(fi, check.NotNil)
c.Assert(fi.Size(), check.Equals, int64(len(contentsChunk1)))
if fi.Size() > chunkSize {
c.Fatalf("Offset too large, %d > %d", fi.Size(), chunkSize)
}
nn, err = suite.StorageDriver.WriteStream(filename, fi.Size(), bytes.NewReader(contentsChunk2))
c.Assert(err, check.IsNil)
c.Assert(nn, check.Equals, int64(len(contentsChunk2)))
fi, err = suite.StorageDriver.Stat(filename)
c.Assert(err, check.IsNil)
c.Assert(fi, check.NotNil)
c.Assert(fi.Size(), check.Equals, 2*chunkSize)
if fi.Size() > 2*chunkSize {
c.Fatalf("Offset too large, %d > %d", fi.Size(), 2*chunkSize)
}
nn, err = suite.StorageDriver.WriteStream(filename, fi.Size(), bytes.NewReader(fullContents[fi.Size():]))
c.Assert(err, check.IsNil)
c.Assert(nn, check.Equals, int64(len(fullContents[fi.Size():])))
received, err := suite.StorageDriver.GetContent(filename)
c.Assert(err, check.IsNil)
c.Assert(received, check.DeepEquals, fullContents)
// Writing past size of file extends file (no offest error). We would like
// to write chunk 4 one chunk length past chunk 3. It should be successful
// and the resulting file will be 5 chunks long, with a chunk of all
// zeros.
fullContents = append(fullContents, zeroChunk...)
fullContents = append(fullContents, contentsChunk4...)
nn, err = suite.StorageDriver.WriteStream(filename, int64(len(fullContents))-chunkSize, bytes.NewReader(contentsChunk4))
c.Assert(err, check.IsNil)
c.Assert(nn, check.Equals, chunkSize)
fi, err = suite.StorageDriver.Stat(filename)
c.Assert(err, check.IsNil)
c.Assert(fi, check.NotNil)
c.Assert(fi.Size(), check.Equals, int64(len(fullContents)))
received, err = suite.StorageDriver.GetContent(filename)
c.Assert(err, check.IsNil)
c.Assert(len(received), check.Equals, len(fullContents))
c.Assert(received[chunkSize*3:chunkSize*4], check.DeepEquals, zeroChunk)
c.Assert(received[chunkSize*4:chunkSize*5], check.DeepEquals, contentsChunk4)
c.Assert(received, check.DeepEquals, fullContents)
// Ensure that negative offsets return correct error.
nn, err = suite.StorageDriver.WriteStream(filename, -1, bytes.NewReader(zeroChunk))
c.Assert(err, check.NotNil)
c.Assert(err, check.FitsTypeOf, storagedriver.InvalidOffsetError{})
c.Assert(err.(storagedriver.InvalidOffsetError).Path, check.Equals, filename)
c.Assert(err.(storagedriver.InvalidOffsetError).Offset, check.Equals, int64(-1))
}
// TestReadNonexistentStream tests that reading a stream for a nonexistent path
// fails.
func (suite *DriverSuite) TestReadNonexistentStream(c *check.C) {
filename := randomString(32)
_, err := suite.StorageDriver.ReadStream(filename, 0)
c.Assert(err, check.NotNil)
c.Assert(err, check.FitsTypeOf, storagedriver.PathNotFoundError{})
}
// TestList checks the returned list of keys after populating a directory tree.
func (suite *DriverSuite) TestList(c *check.C) {
rootDirectory := "/" + randomString(int64(8+rand.Intn(8)))
defer suite.StorageDriver.Delete(rootDirectory)
parentDirectory := rootDirectory + "/" + randomString(int64(8+rand.Intn(8)))
childFiles := make([]string, 50)
for i := 0; i < len(childFiles); i++ {
childFile := parentDirectory + "/" + randomString(int64(8+rand.Intn(8)))
childFiles[i] = childFile
err := suite.StorageDriver.PutContent(childFile, []byte(randomString(32)))
c.Assert(err, check.IsNil)
}
sort.Strings(childFiles)
keys, err := suite.StorageDriver.List("/")
c.Assert(err, check.IsNil)
c.Assert(keys, check.DeepEquals, []string{rootDirectory})
keys, err = suite.StorageDriver.List(rootDirectory)
c.Assert(err, check.IsNil)
c.Assert(keys, check.DeepEquals, []string{parentDirectory})
keys, err = suite.StorageDriver.List(parentDirectory)
c.Assert(err, check.IsNil)
sort.Strings(keys)
c.Assert(keys, check.DeepEquals, childFiles)
}
// TestMove checks that a moved object no longer exists at the source path and
// does exist at the destination.
func (suite *DriverSuite) TestMove(c *check.C) {
contents := []byte(randomString(32))
sourcePath := randomString(32)
destPath := randomString(32)
defer suite.StorageDriver.Delete(sourcePath)
defer suite.StorageDriver.Delete(destPath)
err := suite.StorageDriver.PutContent(sourcePath, contents)
c.Assert(err, check.IsNil)
err = suite.StorageDriver.Move(sourcePath, destPath)
c.Assert(err, check.IsNil)
received, err := suite.StorageDriver.GetContent(destPath)
c.Assert(err, check.IsNil)
c.Assert(received, check.DeepEquals, contents)
_, err = suite.StorageDriver.GetContent(sourcePath)
c.Assert(err, check.NotNil)
c.Assert(err, check.FitsTypeOf, storagedriver.PathNotFoundError{})
}
// TestMoveNonexistent checks that moving a nonexistent key fails
func (suite *DriverSuite) TestMoveNonexistent(c *check.C) {
sourcePath := randomString(32)
destPath := randomString(32)
err := suite.StorageDriver.Move(sourcePath, destPath)
c.Assert(err, check.NotNil)
c.Assert(err, check.FitsTypeOf, storagedriver.PathNotFoundError{})
}
// TestDelete checks that the delete operation removes data from the storage
// driver
func (suite *DriverSuite) TestDelete(c *check.C) {
filename := randomString(32)
contents := []byte(randomString(32))
defer suite.StorageDriver.Delete(filename)
err := suite.StorageDriver.PutContent(filename, contents)
c.Assert(err, check.IsNil)
err = suite.StorageDriver.Delete(filename)
c.Assert(err, check.IsNil)
_, err = suite.StorageDriver.GetContent(filename)
c.Assert(err, check.NotNil)
c.Assert(err, check.FitsTypeOf, storagedriver.PathNotFoundError{})
}
// TestDeleteNonexistent checks that removing a nonexistent key fails.
func (suite *DriverSuite) TestDeleteNonexistent(c *check.C) {
filename := randomString(32)
err := suite.StorageDriver.Delete(filename)
c.Assert(err, check.NotNil)
c.Assert(err, check.FitsTypeOf, storagedriver.PathNotFoundError{})
}
// TestDeleteFolder checks that deleting a folder removes all child elements.
func (suite *DriverSuite) TestDeleteFolder(c *check.C) {
dirname := randomString(32)
filename1 := randomString(32)
filename2 := randomString(32)
contents := []byte(randomString(32))
defer suite.StorageDriver.Delete(path.Join(dirname, filename1))
defer suite.StorageDriver.Delete(path.Join(dirname, filename2))
err := suite.StorageDriver.PutContent(path.Join(dirname, filename1), contents)
c.Assert(err, check.IsNil)
err = suite.StorageDriver.PutContent(path.Join(dirname, filename2), contents)
c.Assert(err, check.IsNil)
err = suite.StorageDriver.Delete(dirname)
c.Assert(err, check.IsNil)
_, err = suite.StorageDriver.GetContent(path.Join(dirname, filename1))
c.Assert(err, check.NotNil)
c.Assert(err, check.FitsTypeOf, storagedriver.PathNotFoundError{})
_, err = suite.StorageDriver.GetContent(path.Join(dirname, filename2))
c.Assert(err, check.NotNil)
c.Assert(err, check.FitsTypeOf, storagedriver.PathNotFoundError{})
}
func (suite *DriverSuite) TestStatCall(c *check.C) {
content := randomString(4096)
dirPath := randomString(32)
fileName := randomString(32)
filePath := path.Join(dirPath, fileName)
// Call on non-existent file/dir, check error.
fi, err := suite.StorageDriver.Stat(filePath)
c.Assert(err, check.NotNil)
c.Assert(err, check.FitsTypeOf, storagedriver.PathNotFoundError{})
c.Assert(fi, check.IsNil)
err = suite.StorageDriver.PutContent(filePath, []byte(content))
c.Assert(err, check.IsNil)
// Call on regular file, check results
start := time.Now().Truncate(time.Second) // truncated for filesystem
fi, err = suite.StorageDriver.Stat(filePath)
c.Assert(err, check.IsNil)
expectedModTime := time.Now()
c.Assert(fi, check.NotNil)
c.Assert(fi.Path(), check.Equals, filePath)
c.Assert(fi.Size(), check.Equals, int64(len(content)))
c.Assert(fi.IsDir(), check.Equals, false)
if start.After(fi.ModTime()) {
c.Fatalf("modtime %s before file created (%v)", fi.ModTime(), start)
}
if fi.ModTime().After(expectedModTime) {
c.Fatalf("modtime %s after file created (%v)", fi.ModTime(), expectedModTime)
}
// Call on directory
start = time.Now().Truncate(time.Second)
fi, err = suite.StorageDriver.Stat(dirPath)
c.Assert(err, check.IsNil)
expectedModTime = time.Now()
c.Assert(fi, check.NotNil)
c.Assert(fi.Path(), check.Equals, dirPath)
c.Assert(fi.Size(), check.Equals, int64(0))
c.Assert(fi.IsDir(), check.Equals, true)
if start.After(fi.ModTime()) {
c.Fatalf("modtime %s before file created (%v)", fi.ModTime(), start)
}
if fi.ModTime().After(expectedModTime) {
c.Fatalf("modtime %s after file created (%v)", fi.ModTime(), expectedModTime)
}
}
// TestConcurrentFileStreams checks that multiple *os.File objects can be passed
// in to WriteStream concurrently without hanging.
// TODO(bbland): fix this test...
func (suite *DriverSuite) TestConcurrentFileStreams(c *check.C) {
if _, isIPC := suite.StorageDriver.(*ipc.StorageDriverClient); isIPC {
c.Skip("Need to fix out-of-process concurrency")
}
var wg sync.WaitGroup
testStream := func(size int64) {
defer wg.Done()
suite.testFileStreams(c, size)
}
wg.Add(6)
go testStream(8 * 1024 * 1024)
go testStream(4 * 1024 * 1024)
go testStream(2 * 1024 * 1024)
go testStream(1024 * 1024)
go testStream(1024)
go testStream(64)
wg.Wait()
}
func (suite *DriverSuite) testFileStreams(c *check.C, size int64) {
tf, err := ioutil.TempFile("", "tf")
c.Assert(err, check.IsNil)
defer os.Remove(tf.Name())
tfName := path.Base(tf.Name())
defer suite.StorageDriver.Delete(tfName)
contents := []byte(randomString(size))
_, err = tf.Write(contents)
c.Assert(err, check.IsNil)
tf.Sync()
tf.Seek(0, os.SEEK_SET)
nn, err := suite.StorageDriver.WriteStream(tfName, 0, tf)
c.Assert(err, check.IsNil)
c.Assert(nn, check.Equals, size)
reader, err := suite.StorageDriver.ReadStream(tfName, 0)
c.Assert(err, check.IsNil)
defer reader.Close()
readContents, err := ioutil.ReadAll(reader)
c.Assert(err, check.IsNil)
c.Assert(readContents, check.DeepEquals, contents)
}
func (suite *DriverSuite) writeReadCompare(c *check.C, filename string, contents []byte) {
defer suite.StorageDriver.Delete(filename)
err := suite.StorageDriver.PutContent(filename, contents)
c.Assert(err, check.IsNil)
readContents, err := suite.StorageDriver.GetContent(filename)
c.Assert(err, check.IsNil)
c.Assert(readContents, check.DeepEquals, contents)
}
func (suite *DriverSuite) writeReadCompareStreams(c *check.C, filename string, contents []byte) {
defer suite.StorageDriver.Delete(filename)
nn, err := suite.StorageDriver.WriteStream(filename, 0, bytes.NewReader(contents))
c.Assert(err, check.IsNil)
c.Assert(nn, check.Equals, int64(len(contents)))
reader, err := suite.StorageDriver.ReadStream(filename, 0)
c.Assert(err, check.IsNil)
defer reader.Close()
readContents, err := ioutil.ReadAll(reader)
c.Assert(err, check.IsNil)
c.Assert(readContents, check.DeepEquals, contents)
}
var pathChars = []byte("abcdefghijklmnopqrstuvwxyz")
func randomString(length int64) string {
b := make([]byte, length)
for i := range b {
b[i] = pathChars[rand.Intn(len(pathChars))]
}
return string(b)
}