mirror of
https://codeberg.org/forgejo/forgejo.git
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Pooled and buffered gzip implementation (#5722)
* Pooled and buffered gzip implementation * Add test for gzip * Add integration test * Ensure lfs check within transaction The previous code made it possible for a race condition to occur whereby a LFSMetaObject could be checked into the database twice. We should check if the LFSMetaObject is within the database and insert it if not in one transaction. * Try to avoid primary key problem in postgres The integration tests are being affected by https://github.com/go-testfixtures/testfixtures/issues/39 if we set the primary key high enough, keep a count of this and remove at the end of each test we shouldn't be affected by this.
This commit is contained in:
parent
075649572d
commit
7d434376f1
6 changed files with 598 additions and 10 deletions
129
integrations/lfs_getobject_test.go
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129
integrations/lfs_getobject_test.go
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@ -0,0 +1,129 @@
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// Copyright 2019 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package integrations
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import (
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"archive/zip"
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"bytes"
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"crypto/sha256"
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"encoding/hex"
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"io"
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"io/ioutil"
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"net/http"
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"testing"
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"code.gitea.io/gitea/models"
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"code.gitea.io/gitea/modules/gzip"
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"code.gitea.io/gitea/modules/lfs"
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"code.gitea.io/gitea/modules/setting"
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"github.com/stretchr/testify/assert"
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gzipp "github.com/klauspost/compress/gzip"
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)
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func GenerateLFSOid(content io.Reader) (string, error) {
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h := sha256.New()
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if _, err := io.Copy(h, content); err != nil {
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return "", err
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}
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sum := h.Sum(nil)
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return hex.EncodeToString(sum), nil
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}
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var lfsID = int64(20000)
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func storeObjectInRepo(t *testing.T, repositoryID int64, content *[]byte) string {
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oid, err := GenerateLFSOid(bytes.NewReader(*content))
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assert.NoError(t, err)
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var lfsMetaObject *models.LFSMetaObject
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if setting.UsePostgreSQL {
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lfsMetaObject = &models.LFSMetaObject{ID: lfsID, Oid: oid, Size: int64(len(*content)), RepositoryID: repositoryID}
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} else {
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lfsMetaObject = &models.LFSMetaObject{Oid: oid, Size: int64(len(*content)), RepositoryID: repositoryID}
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}
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lfsID = lfsID + 1
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lfsMetaObject, err = models.NewLFSMetaObject(lfsMetaObject)
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assert.NoError(t, err)
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contentStore := &lfs.ContentStore{BasePath: setting.LFS.ContentPath}
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if !contentStore.Exists(lfsMetaObject) {
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err := contentStore.Put(lfsMetaObject, bytes.NewReader(*content))
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assert.NoError(t, err)
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}
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return oid
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}
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func doLfs(t *testing.T, content *[]byte, expectGzip bool) {
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prepareTestEnv(t)
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repo, err := models.GetRepositoryByOwnerAndName("user2", "repo1")
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assert.NoError(t, err)
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oid := storeObjectInRepo(t, repo.ID, content)
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defer repo.RemoveLFSMetaObjectByOid(oid)
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session := loginUser(t, "user2")
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// Request OID
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req := NewRequest(t, "GET", "/user2/repo1.git/info/lfs/objects/"+oid+"/test")
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req.Header.Set("Accept-Encoding", "gzip")
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resp := session.MakeRequest(t, req, http.StatusOK)
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contentEncoding := resp.Header().Get("Content-Encoding")
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if !expectGzip || !setting.EnableGzip {
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assert.NotContains(t, contentEncoding, "gzip")
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result := resp.Body.Bytes()
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assert.Equal(t, *content, result)
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} else {
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assert.Contains(t, contentEncoding, "gzip")
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gzippReader, err := gzipp.NewReader(resp.Body)
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assert.NoError(t, err)
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result, err := ioutil.ReadAll(gzippReader)
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assert.NoError(t, err)
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assert.Equal(t, *content, result)
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}
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}
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func TestGetLFSSmall(t *testing.T) {
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content := []byte("A very small file\n")
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doLfs(t, &content, false)
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}
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func TestGetLFSLarge(t *testing.T) {
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content := make([]byte, gzip.MinSize*10)
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for i := range content {
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content[i] = byte(i % 256)
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}
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doLfs(t, &content, true)
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}
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func TestGetLFSGzip(t *testing.T) {
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b := make([]byte, gzip.MinSize*10)
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for i := range b {
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b[i] = byte(i % 256)
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}
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outputBuffer := bytes.NewBuffer([]byte{})
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gzippWriter := gzipp.NewWriter(outputBuffer)
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gzippWriter.Write(b)
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gzippWriter.Close()
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content := outputBuffer.Bytes()
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doLfs(t, &content, false)
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}
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func TestGetLFSZip(t *testing.T) {
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b := make([]byte, gzip.MinSize*10)
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for i := range b {
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b[i] = byte(i % 256)
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}
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outputBuffer := bytes.NewBuffer([]byte{})
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zipWriter := zip.NewWriter(outputBuffer)
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fileWriter, err := zipWriter.Create("default")
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assert.NoError(t, err)
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fileWriter.Write(b)
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zipWriter.Close()
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content := outputBuffer.Bytes()
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doLfs(t, &content, false)
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}
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@ -30,6 +30,7 @@ LFS_CONTENT_PATH = data/lfs-sqlite
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OFFLINE_MODE = false
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LFS_JWT_SECRET = Tv_MjmZuHqpIY6GFl12ebgkRAMt4RlWt0v4EHKSXO0w
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APP_DATA_PATH = integrations/gitea-integration-sqlite/data
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ENABLE_GZIP = true
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[mailer]
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ENABLED = false
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@ -44,20 +44,20 @@ const (
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func NewLFSMetaObject(m *LFSMetaObject) (*LFSMetaObject, error) {
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var err error
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has, err := x.Get(m)
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sess := x.NewSession()
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defer sess.Close()
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if err = sess.Begin(); err != nil {
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return nil, err
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}
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has, err := sess.Get(m)
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if err != nil {
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return nil, err
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}
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if has {
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m.Existing = true
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return m, nil
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}
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sess := x.NewSession()
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defer sess.Close()
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if err = sess.Begin(); err != nil {
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return nil, err
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return m, sess.Commit()
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}
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if _, err = sess.Insert(m); err != nil {
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327
modules/gzip/gzip.go
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327
modules/gzip/gzip.go
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// Copyright 2019 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package gzip
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import (
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"bufio"
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"fmt"
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"io"
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"net"
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"net/http"
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"regexp"
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"strconv"
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"strings"
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"sync"
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"github.com/klauspost/compress/gzip"
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"gopkg.in/macaron.v1"
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)
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const (
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acceptEncodingHeader = "Accept-Encoding"
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contentEncodingHeader = "Content-Encoding"
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contentLengthHeader = "Content-Length"
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contentTypeHeader = "Content-Type"
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rangeHeader = "Range"
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varyHeader = "Vary"
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)
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const (
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// MinSize is the minimum size of content we will compress
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MinSize = 1400
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)
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// noopClosers are io.Writers with a shim to prevent early closure
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type noopCloser struct {
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io.Writer
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}
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func (noopCloser) Close() error { return nil }
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// WriterPool is a gzip writer pool to reduce workload on creation of
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// gzip writers
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type WriterPool struct {
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pool sync.Pool
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compressionLevel int
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}
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// NewWriterPool creates a new pool
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func NewWriterPool(compressionLevel int) *WriterPool {
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return &WriterPool{pool: sync.Pool{
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// New will return nil, we'll manage the creation of new
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// writers in the middleware
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New: func() interface{} { return nil },
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},
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compressionLevel: compressionLevel}
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}
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// Get a writer from the pool - or create one if not available
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func (wp *WriterPool) Get(rw macaron.ResponseWriter) *gzip.Writer {
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ret := wp.pool.Get()
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if ret == nil {
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ret, _ = gzip.NewWriterLevel(rw, wp.compressionLevel)
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} else {
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ret.(*gzip.Writer).Reset(rw)
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}
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return ret.(*gzip.Writer)
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}
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// Put returns a writer to the pool
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func (wp *WriterPool) Put(w *gzip.Writer) {
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wp.pool.Put(w)
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}
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var writerPool WriterPool
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var regex regexp.Regexp
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// Options represents the configuration for the gzip middleware
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type Options struct {
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CompressionLevel int
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}
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func validateCompressionLevel(level int) bool {
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return level == gzip.DefaultCompression ||
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level == gzip.ConstantCompression ||
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(level >= gzip.BestSpeed && level <= gzip.BestCompression)
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}
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func validate(options []Options) Options {
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// Default to level 4 compression (Best results seem to be between 4 and 6)
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opt := Options{CompressionLevel: 4}
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if len(options) > 0 {
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opt = options[0]
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}
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if !validateCompressionLevel(opt.CompressionLevel) {
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opt.CompressionLevel = 4
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}
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return opt
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}
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// Middleware creates a macaron.Handler to proxy the response
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func Middleware(options ...Options) macaron.Handler {
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opt := validate(options)
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writerPool = *NewWriterPool(opt.CompressionLevel)
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regex := regexp.MustCompile(`bytes=(\d+)\-.*`)
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return func(ctx *macaron.Context) {
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// If the client won't accept gzip or x-gzip don't compress
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if !strings.Contains(ctx.Req.Header.Get(acceptEncodingHeader), "gzip") &&
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!strings.Contains(ctx.Req.Header.Get(acceptEncodingHeader), "x-gzip") {
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return
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}
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// If the client is asking for a specific range of bytes - don't compress
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if rangeHdr := ctx.Req.Header.Get(rangeHeader); rangeHdr != "" {
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match := regex.FindStringSubmatch(rangeHdr)
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if match != nil && len(match) > 1 {
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return
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}
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}
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// OK we should proxy the response writer
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// We are still not necessarily going to compress...
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proxyWriter := &ProxyResponseWriter{
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ResponseWriter: ctx.Resp,
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}
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defer proxyWriter.Close()
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ctx.Resp = proxyWriter
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ctx.MapTo(proxyWriter, (*http.ResponseWriter)(nil))
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// Check if render middleware has been registered,
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// if yes, we need to modify ResponseWriter for it as well.
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if _, ok := ctx.Render.(*macaron.DummyRender); !ok {
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ctx.Render.SetResponseWriter(proxyWriter)
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}
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ctx.Next()
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}
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}
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// ProxyResponseWriter is a wrapped macaron ResponseWriter that may compress its contents
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type ProxyResponseWriter struct {
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writer io.WriteCloser
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macaron.ResponseWriter
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stopped bool
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code int
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buf []byte
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}
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// Write appends data to the proxied gzip writer.
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func (proxy *ProxyResponseWriter) Write(b []byte) (int, error) {
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// if writer is initialized, use the writer
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if proxy.writer != nil {
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return proxy.writer.Write(b)
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}
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proxy.buf = append(proxy.buf, b...)
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var (
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contentLength, _ = strconv.Atoi(proxy.Header().Get(contentLengthHeader))
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contentType = proxy.Header().Get(contentTypeHeader)
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contentEncoding = proxy.Header().Get(contentEncodingHeader)
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)
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// OK if an encoding hasn't been chosen, and content length > 1400
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// and content type isn't a compressed type
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if contentEncoding == "" &&
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(contentLength == 0 || contentLength >= MinSize) &&
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(contentType == "" || !compressedContentType(contentType)) {
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// If current buffer is less than the min size and a Content-Length isn't set, then wait
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if len(proxy.buf) < MinSize && contentLength == 0 {
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return len(b), nil
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}
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// If the Content-Length is larger than minSize or the current buffer is larger than minSize, then continue.
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if contentLength >= MinSize || len(proxy.buf) >= MinSize {
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// if we don't know the content type, infer it
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if contentType == "" {
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contentType = http.DetectContentType(proxy.buf)
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proxy.Header().Set(contentTypeHeader, contentType)
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}
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// If the Content-Type is not compressed - Compress!
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if !compressedContentType(contentType) {
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if err := proxy.startGzip(); err != nil {
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return 0, err
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}
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return len(b), nil
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}
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}
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}
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// If we got here, we should not GZIP this response.
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if err := proxy.startPlain(); err != nil {
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return 0, err
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}
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return len(b), nil
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}
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func (proxy *ProxyResponseWriter) startGzip() error {
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// Set the content-encoding and vary headers.
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proxy.Header().Set(contentEncodingHeader, "gzip")
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proxy.Header().Set(varyHeader, acceptEncodingHeader)
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// if the Content-Length is already set, then calls to Write on gzip
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// will fail to set the Content-Length header since its already set
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// See: https://github.com/golang/go/issues/14975.
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proxy.Header().Del(contentLengthHeader)
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// Write the header to gzip response.
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if proxy.code != 0 {
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proxy.ResponseWriter.WriteHeader(proxy.code)
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// Ensure that no other WriteHeader's happen
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proxy.code = 0
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}
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// Initialize and flush the buffer into the gzip response if there are any bytes.
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// If there aren't any, we shouldn't initialize it yet because on Close it will
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// write the gzip header even if nothing was ever written.
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if len(proxy.buf) > 0 {
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// Initialize the GZIP response.
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proxy.writer = writerPool.Get(proxy.ResponseWriter)
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return proxy.writeBuf()
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}
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return nil
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}
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func (proxy *ProxyResponseWriter) startPlain() error {
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if proxy.code != 0 {
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proxy.ResponseWriter.WriteHeader(proxy.code)
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proxy.code = 0
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}
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proxy.stopped = true
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proxy.writer = noopCloser{proxy.ResponseWriter}
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return proxy.writeBuf()
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}
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func (proxy *ProxyResponseWriter) writeBuf() error {
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if proxy.buf == nil {
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return nil
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}
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n, err := proxy.writer.Write(proxy.buf)
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// This should never happen (per io.Writer docs), but if the write didn't
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// accept the entire buffer but returned no specific error, we have no clue
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// what's going on, so abort just to be safe.
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if err == nil && n < len(proxy.buf) {
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err = io.ErrShortWrite
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}
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proxy.buf = nil
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return err
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}
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// WriteHeader will ensure that we have setup the writer before we write the header
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func (proxy *ProxyResponseWriter) WriteHeader(code int) {
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if proxy.code == 0 {
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proxy.code = code
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}
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}
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|
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// Close the writer
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func (proxy *ProxyResponseWriter) Close() error {
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if proxy.stopped {
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return nil
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}
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if proxy.writer == nil {
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err := proxy.startPlain()
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if err != nil {
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err = fmt.Errorf("GzipMiddleware: write to regular responseWriter at close gets error: %q", err.Error())
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}
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}
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err := proxy.writer.Close()
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if poolWriter, ok := proxy.writer.(*gzip.Writer); ok {
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writerPool.Put(poolWriter)
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}
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proxy.writer = nil
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proxy.stopped = true
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return err
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}
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// Flush the writer
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func (proxy *ProxyResponseWriter) Flush() {
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if proxy.writer == nil {
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return
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}
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|
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if gw, ok := proxy.writer.(*gzip.Writer); ok {
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gw.Flush()
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}
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proxy.ResponseWriter.Flush()
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}
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|
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// Hijack implements http.Hijacker. If the underlying ResponseWriter is a
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// Hijacker, its Hijack method is returned. Otherwise an error is returned.
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func (proxy *ProxyResponseWriter) Hijack() (net.Conn, *bufio.ReadWriter, error) {
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hijacker, ok := proxy.ResponseWriter.(http.Hijacker)
|
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if !ok {
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return nil, nil, fmt.Errorf("the ResponseWriter doesn't support the Hijacker interface")
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}
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return hijacker.Hijack()
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}
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|
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// verify Hijacker interface implementation
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var _ http.Hijacker = &ProxyResponseWriter{}
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func compressedContentType(contentType string) bool {
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switch contentType {
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case "application/zip":
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return true
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||||
case "application/x-gzip":
|
||||
return true
|
||||
case "application/gzip":
|
||||
return true
|
||||
default:
|
||||
return false
|
||||
}
|
||||
}
|
131
modules/gzip/gzip_test.go
Normal file
131
modules/gzip/gzip_test.go
Normal file
|
@ -0,0 +1,131 @@
|
|||
// Copyright 2019 The Gitea Authors. All rights reserved.
|
||||
// Use of this source code is governed by a MIT-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package gzip
|
||||
|
||||
import (
|
||||
"archive/zip"
|
||||
"bytes"
|
||||
"io/ioutil"
|
||||
"net/http"
|
||||
"net/http/httptest"
|
||||
"testing"
|
||||
|
||||
gzipp "github.com/klauspost/compress/gzip"
|
||||
"github.com/stretchr/testify/assert"
|
||||
macaron "gopkg.in/macaron.v1"
|
||||
)
|
||||
|
||||
func setup(sampleResponse []byte) (*macaron.Macaron, *[]byte) {
|
||||
m := macaron.New()
|
||||
m.Use(Middleware())
|
||||
m.Get("/", func() *[]byte { return &sampleResponse })
|
||||
return m, &sampleResponse
|
||||
}
|
||||
|
||||
func reqNoAcceptGzip(t *testing.T, m *macaron.Macaron, sampleResponse *[]byte) {
|
||||
// Request without accept gzip: Should not gzip
|
||||
resp := httptest.NewRecorder()
|
||||
req, err := http.NewRequest("GET", "/", nil)
|
||||
assert.NoError(t, err)
|
||||
m.ServeHTTP(resp, req)
|
||||
|
||||
_, ok := resp.HeaderMap[contentEncodingHeader]
|
||||
assert.False(t, ok)
|
||||
|
||||
contentEncoding := resp.Header().Get(contentEncodingHeader)
|
||||
assert.NotContains(t, contentEncoding, "gzip")
|
||||
|
||||
result := resp.Body.Bytes()
|
||||
assert.Equal(t, *sampleResponse, result)
|
||||
}
|
||||
|
||||
func reqAcceptGzip(t *testing.T, m *macaron.Macaron, sampleResponse *[]byte, expectGzip bool) {
|
||||
// Request without accept gzip: Should not gzip
|
||||
resp := httptest.NewRecorder()
|
||||
req, err := http.NewRequest("GET", "/", nil)
|
||||
assert.NoError(t, err)
|
||||
req.Header.Set(acceptEncodingHeader, "gzip")
|
||||
m.ServeHTTP(resp, req)
|
||||
|
||||
_, ok := resp.HeaderMap[contentEncodingHeader]
|
||||
assert.Equal(t, ok, expectGzip)
|
||||
|
||||
contentEncoding := resp.Header().Get(contentEncodingHeader)
|
||||
if expectGzip {
|
||||
assert.Contains(t, contentEncoding, "gzip")
|
||||
gzippReader, err := gzipp.NewReader(resp.Body)
|
||||
assert.NoError(t, err)
|
||||
result, err := ioutil.ReadAll(gzippReader)
|
||||
assert.NoError(t, err)
|
||||
assert.Equal(t, *sampleResponse, result)
|
||||
} else {
|
||||
assert.NotContains(t, contentEncoding, "gzip")
|
||||
result := resp.Body.Bytes()
|
||||
assert.Equal(t, *sampleResponse, result)
|
||||
}
|
||||
}
|
||||
|
||||
func TestMiddlewareSmall(t *testing.T) {
|
||||
m, sampleResponse := setup([]byte("Small response"))
|
||||
|
||||
reqNoAcceptGzip(t, m, sampleResponse)
|
||||
|
||||
reqAcceptGzip(t, m, sampleResponse, false)
|
||||
}
|
||||
|
||||
func TestMiddlewareLarge(t *testing.T) {
|
||||
b := make([]byte, MinSize+1)
|
||||
for i := range b {
|
||||
b[i] = byte(i % 256)
|
||||
}
|
||||
m, sampleResponse := setup(b)
|
||||
|
||||
reqNoAcceptGzip(t, m, sampleResponse)
|
||||
|
||||
// This should be gzipped as we accept gzip
|
||||
reqAcceptGzip(t, m, sampleResponse, true)
|
||||
}
|
||||
|
||||
func TestMiddlewareGzip(t *testing.T) {
|
||||
b := make([]byte, MinSize*10)
|
||||
for i := range b {
|
||||
b[i] = byte(i % 256)
|
||||
}
|
||||
outputBuffer := bytes.NewBuffer([]byte{})
|
||||
gzippWriter := gzipp.NewWriter(outputBuffer)
|
||||
gzippWriter.Write(b)
|
||||
gzippWriter.Flush()
|
||||
gzippWriter.Close()
|
||||
output := outputBuffer.Bytes()
|
||||
|
||||
m, sampleResponse := setup(output)
|
||||
|
||||
reqNoAcceptGzip(t, m, sampleResponse)
|
||||
|
||||
// This should not be gzipped even though we accept gzip
|
||||
reqAcceptGzip(t, m, sampleResponse, false)
|
||||
}
|
||||
|
||||
func TestMiddlewareZip(t *testing.T) {
|
||||
b := make([]byte, MinSize*10)
|
||||
for i := range b {
|
||||
b[i] = byte(i % 256)
|
||||
}
|
||||
outputBuffer := bytes.NewBuffer([]byte{})
|
||||
zipWriter := zip.NewWriter(outputBuffer)
|
||||
fileWriter, err := zipWriter.Create("default")
|
||||
assert.NoError(t, err)
|
||||
fileWriter.Write(b)
|
||||
//fileWriter.Close()
|
||||
zipWriter.Close()
|
||||
output := outputBuffer.Bytes()
|
||||
|
||||
m, sampleResponse := setup(output)
|
||||
|
||||
reqNoAcceptGzip(t, m, sampleResponse)
|
||||
|
||||
// This should not be gzipped even though we accept gzip
|
||||
reqAcceptGzip(t, m, sampleResponse, false)
|
||||
}
|
|
@ -14,6 +14,7 @@ import (
|
|||
"code.gitea.io/gitea/models"
|
||||
"code.gitea.io/gitea/modules/auth"
|
||||
"code.gitea.io/gitea/modules/context"
|
||||
"code.gitea.io/gitea/modules/gzip"
|
||||
"code.gitea.io/gitea/modules/lfs"
|
||||
"code.gitea.io/gitea/modules/log"
|
||||
"code.gitea.io/gitea/modules/metrics"
|
||||
|
@ -36,7 +37,6 @@ import (
|
|||
"github.com/go-macaron/cache"
|
||||
"github.com/go-macaron/captcha"
|
||||
"github.com/go-macaron/csrf"
|
||||
"github.com/go-macaron/gzip"
|
||||
"github.com/go-macaron/i18n"
|
||||
"github.com/go-macaron/session"
|
||||
"github.com/go-macaron/toolbox"
|
||||
|
@ -54,7 +54,7 @@ func NewMacaron() *macaron.Macaron {
|
|||
}
|
||||
m.Use(macaron.Recovery())
|
||||
if setting.EnableGzip {
|
||||
m.Use(gzip.Gziper())
|
||||
m.Use(gzip.Middleware())
|
||||
}
|
||||
if setting.Protocol == setting.FCGI {
|
||||
m.SetURLPrefix(setting.AppSubURL)
|
||||
|
|
Loading…
Reference in a new issue