mirror of
https://github.com/superseriousbusiness/gotosocial
synced 2024-11-26 22:30:25 +00:00
[bugfix] Close reader gracefully when streaming recache of remote media to fileserver api caller (#1281)
* close pipereader on failed data function * gently slurp the bytes * readability updates * go fmt * tidy up file server tests + add more cases * start moving io wrappers to separate iotools package. Remove use of buffering while piping recache stream Signed-off-by: kim <grufwub@gmail.com> * add license text Signed-off-by: kim <grufwub@gmail.com> Co-authored-by: kim <grufwub@gmail.com>
This commit is contained in:
tobi
GitHub
parent
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commit
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8 changed files with 503 additions and 214 deletions
109
internal/api/client/fileserver/fileserver_test.go
Normal file
109
internal/api/client/fileserver/fileserver_test.go
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@ -0,0 +1,109 @@
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/*
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GoToSocial
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Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package fileserver_test
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import (
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"context"
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"github.com/stretchr/testify/suite"
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"github.com/superseriousbusiness/gotosocial/internal/api/client/fileserver"
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"github.com/superseriousbusiness/gotosocial/internal/concurrency"
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"github.com/superseriousbusiness/gotosocial/internal/db"
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"github.com/superseriousbusiness/gotosocial/internal/email"
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"github.com/superseriousbusiness/gotosocial/internal/federation"
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"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
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"github.com/superseriousbusiness/gotosocial/internal/log"
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"github.com/superseriousbusiness/gotosocial/internal/media"
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"github.com/superseriousbusiness/gotosocial/internal/messages"
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"github.com/superseriousbusiness/gotosocial/internal/oauth"
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"github.com/superseriousbusiness/gotosocial/internal/processing"
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"github.com/superseriousbusiness/gotosocial/internal/storage"
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"github.com/superseriousbusiness/gotosocial/internal/typeutils"
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"github.com/superseriousbusiness/gotosocial/testrig"
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)
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type FileserverTestSuite struct {
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// standard suite interfaces
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suite.Suite
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db db.DB
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storage *storage.Driver
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federator federation.Federator
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tc typeutils.TypeConverter
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processor processing.Processor
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mediaManager media.Manager
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oauthServer oauth.Server
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emailSender email.Sender
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// standard suite models
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testTokens map[string]*gtsmodel.Token
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testClients map[string]*gtsmodel.Client
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testApplications map[string]*gtsmodel.Application
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testUsers map[string]*gtsmodel.User
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testAccounts map[string]*gtsmodel.Account
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testAttachments map[string]*gtsmodel.MediaAttachment
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// item being tested
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fileServer *fileserver.FileServer
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}
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/*
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TEST INFRASTRUCTURE
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*/
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func (suite *FileserverTestSuite) SetupSuite() {
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testrig.InitTestConfig()
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testrig.InitTestLog()
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fedWorker := concurrency.NewWorkerPool[messages.FromFederator](-1, -1)
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clientWorker := concurrency.NewWorkerPool[messages.FromClientAPI](-1, -1)
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suite.db = testrig.NewTestDB()
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suite.storage = testrig.NewInMemoryStorage()
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suite.federator = testrig.NewTestFederator(suite.db, testrig.NewTestTransportController(testrig.NewMockHTTPClient(nil, "../../../../testrig/media"), suite.db, fedWorker), suite.storage, suite.mediaManager, fedWorker)
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suite.emailSender = testrig.NewEmailSender("../../../../web/template/", nil)
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suite.processor = testrig.NewTestProcessor(suite.db, suite.storage, suite.federator, suite.emailSender, testrig.NewTestMediaManager(suite.db, suite.storage), clientWorker, fedWorker)
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suite.tc = testrig.NewTestTypeConverter(suite.db)
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suite.mediaManager = testrig.NewTestMediaManager(suite.db, suite.storage)
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suite.oauthServer = testrig.NewTestOauthServer(suite.db)
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suite.fileServer = fileserver.New(suite.processor).(*fileserver.FileServer)
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}
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func (suite *FileserverTestSuite) SetupTest() {
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testrig.StandardDBSetup(suite.db, nil)
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testrig.StandardStorageSetup(suite.storage, "../../../../testrig/media")
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suite.testTokens = testrig.NewTestTokens()
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suite.testClients = testrig.NewTestClients()
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suite.testApplications = testrig.NewTestApplications()
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suite.testUsers = testrig.NewTestUsers()
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suite.testAccounts = testrig.NewTestAccounts()
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suite.testAttachments = testrig.NewTestAttachments()
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}
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func (suite *FileserverTestSuite) TearDownSuite() {
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if err := suite.db.Stop(context.Background()); err != nil {
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log.Panicf("error closing db connection: %s", err)
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}
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}
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func (suite *FileserverTestSuite) TearDownTest() {
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testrig.StandardDBTeardown(suite.db)
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testrig.StandardStorageTeardown(suite.storage)
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}
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@ -19,7 +19,9 @@
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package fileserver
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import (
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"bytes"
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"fmt"
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"io"
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"net/http"
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"strconv"
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@ -120,5 +122,14 @@ func (m *FileServer) ServeFile(c *gin.Context) {
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return
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}
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c.DataFromReader(http.StatusOK, content.ContentLength, format, content.Content, nil)
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// try to slurp the first few bytes to make sure we have something
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b := bytes.NewBuffer(make([]byte, 0, 64))
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if _, err := io.CopyN(b, content.Content, 64); err != nil {
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err = fmt.Errorf("ServeFile: error reading from content: %w", err)
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api.ErrorHandler(c, gtserror.NewErrorNotFound(err, err.Error()), m.processor.InstanceGet)
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return
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}
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// we're good, return the slurped bytes + the rest of the content
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c.DataFromReader(http.StatusOK, content.ContentLength, format, io.MultiReader(b, content.Content), nil)
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}
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@ -20,196 +20,251 @@ package fileserver_test
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import (
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"context"
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"fmt"
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"io/ioutil"
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"net/http"
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"net/http/httptest"
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"testing"
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"github.com/gin-gonic/gin"
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"github.com/stretchr/testify/suite"
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"github.com/superseriousbusiness/gotosocial/internal/api/client/fileserver"
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"github.com/superseriousbusiness/gotosocial/internal/concurrency"
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"github.com/superseriousbusiness/gotosocial/internal/db"
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"github.com/superseriousbusiness/gotosocial/internal/email"
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"github.com/superseriousbusiness/gotosocial/internal/federation"
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"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
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"github.com/superseriousbusiness/gotosocial/internal/log"
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"github.com/superseriousbusiness/gotosocial/internal/media"
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"github.com/superseriousbusiness/gotosocial/internal/messages"
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"github.com/superseriousbusiness/gotosocial/internal/oauth"
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"github.com/superseriousbusiness/gotosocial/internal/processing"
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"github.com/superseriousbusiness/gotosocial/internal/storage"
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"github.com/superseriousbusiness/gotosocial/internal/typeutils"
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"github.com/superseriousbusiness/gotosocial/testrig"
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)
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type ServeFileTestSuite struct {
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// standard suite interfaces
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suite.Suite
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db db.DB
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storage *storage.Driver
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federator federation.Federator
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tc typeutils.TypeConverter
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processor processing.Processor
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mediaManager media.Manager
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oauthServer oauth.Server
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emailSender email.Sender
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// standard suite models
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testTokens map[string]*gtsmodel.Token
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testClients map[string]*gtsmodel.Client
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testApplications map[string]*gtsmodel.Application
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testUsers map[string]*gtsmodel.User
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testAccounts map[string]*gtsmodel.Account
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testAttachments map[string]*gtsmodel.MediaAttachment
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// item being tested
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fileServer *fileserver.FileServer
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FileserverTestSuite
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}
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/*
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TEST INFRASTRUCTURE
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*/
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func (suite *ServeFileTestSuite) SetupSuite() {
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// setup standard items
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testrig.InitTestConfig()
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testrig.InitTestLog()
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fedWorker := concurrency.NewWorkerPool[messages.FromFederator](-1, -1)
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clientWorker := concurrency.NewWorkerPool[messages.FromClientAPI](-1, -1)
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suite.db = testrig.NewTestDB()
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suite.storage = testrig.NewInMemoryStorage()
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suite.federator = testrig.NewTestFederator(suite.db, testrig.NewTestTransportController(testrig.NewMockHTTPClient(nil, "../../../../testrig/media"), suite.db, fedWorker), suite.storage, suite.mediaManager, fedWorker)
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suite.emailSender = testrig.NewEmailSender("../../../../web/template/", nil)
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suite.processor = testrig.NewTestProcessor(suite.db, suite.storage, suite.federator, suite.emailSender, testrig.NewTestMediaManager(suite.db, suite.storage), clientWorker, fedWorker)
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suite.tc = testrig.NewTestTypeConverter(suite.db)
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suite.mediaManager = testrig.NewTestMediaManager(suite.db, suite.storage)
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suite.oauthServer = testrig.NewTestOauthServer(suite.db)
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// setup module being tested
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suite.fileServer = fileserver.New(suite.processor).(*fileserver.FileServer)
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}
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func (suite *ServeFileTestSuite) TearDownSuite() {
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if err := suite.db.Stop(context.Background()); err != nil {
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log.Panicf("error closing db connection: %s", err)
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}
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}
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func (suite *ServeFileTestSuite) SetupTest() {
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testrig.StandardDBSetup(suite.db, nil)
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testrig.StandardStorageSetup(suite.storage, "../../../../testrig/media")
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suite.testTokens = testrig.NewTestTokens()
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suite.testClients = testrig.NewTestClients()
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suite.testApplications = testrig.NewTestApplications()
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suite.testUsers = testrig.NewTestUsers()
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suite.testAccounts = testrig.NewTestAccounts()
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suite.testAttachments = testrig.NewTestAttachments()
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}
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func (suite *ServeFileTestSuite) TearDownTest() {
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testrig.StandardDBTeardown(suite.db)
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testrig.StandardStorageTeardown(suite.storage)
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}
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/*
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ACTUAL TESTS
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*/
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func (suite *ServeFileTestSuite) TestServeOriginalFileSuccessful() {
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targetAttachment, ok := suite.testAttachments["admin_account_status_1_attachment_1"]
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suite.True(ok)
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suite.NotNil(targetAttachment)
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// GetFile is just a convenience function to save repetition in this test suite.
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// It takes the required params to serve a file, calls the handler, and returns
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// the http status code, the response headers, and the parsed body bytes.
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func (suite *ServeFileTestSuite) GetFile(
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accountID string,
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mediaType media.Type,
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mediaSize media.Size,
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filename string,
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) (code int, headers http.Header, body []byte) {
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recorder := httptest.NewRecorder()
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ctx, _ := testrig.CreateGinTestContext(recorder, nil)
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ctx.Request = httptest.NewRequest(http.MethodGet, targetAttachment.URL, nil)
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ctx.Request.Header.Set("accept", "*/*")
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// normally the router would populate these params from the path values,
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// but because we're calling the ServeFile function directly, we need to set them manually.
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ctx.Params = gin.Params{
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gin.Param{
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Key: fileserver.AccountIDKey,
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Value: targetAttachment.AccountID,
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},
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gin.Param{
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Key: fileserver.MediaTypeKey,
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Value: string(media.TypeAttachment),
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},
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gin.Param{
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Key: fileserver.MediaSizeKey,
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Value: string(media.SizeOriginal),
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},
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gin.Param{
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Key: fileserver.FileNameKey,
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Value: fmt.Sprintf("%s.jpeg", targetAttachment.ID),
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},
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ctx, _ := testrig.CreateGinTestContext(recorder, nil)
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ctx.Request = httptest.NewRequest(http.MethodGet, "http://localhost:8080/whatever", nil)
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ctx.Request.Header.Set("accept", "*/*")
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ctx.AddParam(fileserver.AccountIDKey, accountID)
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ctx.AddParam(fileserver.MediaTypeKey, string(mediaType))
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ctx.AddParam(fileserver.MediaSizeKey, string(mediaSize))
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ctx.AddParam(fileserver.FileNameKey, filename)
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suite.fileServer.ServeFile(ctx)
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code = recorder.Code
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headers = recorder.Result().Header
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var err error
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body, err = ioutil.ReadAll(recorder.Body)
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if err != nil {
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suite.FailNow(err.Error())
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}
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// call the function we're testing and check status code
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suite.fileServer.ServeFile(ctx)
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suite.EqualValues(http.StatusOK, recorder.Code)
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suite.EqualValues("image/jpeg", recorder.Header().Get("content-type"))
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b, err := ioutil.ReadAll(recorder.Body)
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suite.NoError(err)
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suite.NotNil(b)
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fileInStorage, err := suite.storage.Get(ctx, targetAttachment.File.Path)
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suite.NoError(err)
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suite.NotNil(fileInStorage)
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suite.Equal(b, fileInStorage)
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return
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}
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func (suite *ServeFileTestSuite) TestServeSmallFileSuccessful() {
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targetAttachment, ok := suite.testAttachments["admin_account_status_1_attachment_1"]
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suite.True(ok)
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suite.NotNil(targetAttachment)
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// UncacheAttachment is a convenience function that uncaches the targetAttachment by
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// removing its associated files from storage, and updating the database.
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func (suite *ServeFileTestSuite) UncacheAttachment(targetAttachment *gtsmodel.MediaAttachment) {
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ctx := context.Background()
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recorder := httptest.NewRecorder()
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ctx, _ := testrig.CreateGinTestContext(recorder, nil)
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ctx.Request = httptest.NewRequest(http.MethodGet, targetAttachment.Thumbnail.URL, nil)
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ctx.Request.Header.Set("accept", "*/*")
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cached := false
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targetAttachment.Cached = &cached
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// normally the router would populate these params from the path values,
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// but because we're calling the ServeFile function directly, we need to set them manually.
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ctx.Params = gin.Params{
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gin.Param{
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Key: fileserver.AccountIDKey,
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Value: targetAttachment.AccountID,
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},
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gin.Param{
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Key: fileserver.MediaTypeKey,
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Value: string(media.TypeAttachment),
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},
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gin.Param{
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Key: fileserver.MediaSizeKey,
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Value: string(media.SizeSmall),
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},
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gin.Param{
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Key: fileserver.FileNameKey,
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Value: fmt.Sprintf("%s.jpeg", targetAttachment.ID),
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},
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if err := suite.db.UpdateByID(ctx, targetAttachment, targetAttachment.ID, "cached"); err != nil {
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suite.FailNow(err.Error())
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}
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if err := suite.storage.Delete(ctx, targetAttachment.File.Path); err != nil {
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suite.FailNow(err.Error())
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}
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if err := suite.storage.Delete(ctx, targetAttachment.Thumbnail.Path); err != nil {
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suite.FailNow(err.Error())
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}
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}
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func (suite *ServeFileTestSuite) TestServeOriginalLocalFileOK() {
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targetAttachment := >smodel.MediaAttachment{}
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*targetAttachment = *suite.testAttachments["admin_account_status_1_attachment_1"]
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fileInStorage, err := suite.storage.Get(context.Background(), targetAttachment.File.Path)
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if err != nil {
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suite.FailNow(err.Error())
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}
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// call the function we're testing and check status code
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suite.fileServer.ServeFile(ctx)
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suite.EqualValues(http.StatusOK, recorder.Code)
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suite.EqualValues("image/jpeg", recorder.Header().Get("content-type"))
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code, headers, body := suite.GetFile(
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targetAttachment.AccountID,
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media.TypeAttachment,
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media.SizeOriginal,
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targetAttachment.ID+".jpeg",
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)
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b, err := ioutil.ReadAll(recorder.Body)
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suite.NoError(err)
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suite.NotNil(b)
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suite.Equal(http.StatusOK, code)
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suite.Equal("image/jpeg", headers.Get("content-type"))
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suite.Equal(fileInStorage, body)
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}
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fileInStorage, err := suite.storage.Get(ctx, targetAttachment.Thumbnail.Path)
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suite.NoError(err)
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suite.NotNil(fileInStorage)
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suite.Equal(b, fileInStorage)
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func (suite *ServeFileTestSuite) TestServeSmallLocalFileOK() {
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targetAttachment := >smodel.MediaAttachment{}
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*targetAttachment = *suite.testAttachments["admin_account_status_1_attachment_1"]
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fileInStorage, err := suite.storage.Get(context.Background(), targetAttachment.Thumbnail.Path)
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if err != nil {
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suite.FailNow(err.Error())
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}
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code, headers, body := suite.GetFile(
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targetAttachment.AccountID,
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media.TypeAttachment,
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media.SizeSmall,
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targetAttachment.ID+".jpeg",
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)
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suite.Equal(http.StatusOK, code)
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suite.Equal("image/jpeg", headers.Get("content-type"))
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suite.Equal(fileInStorage, body)
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}
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func (suite *ServeFileTestSuite) TestServeOriginalRemoteFileOK() {
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targetAttachment := >smodel.MediaAttachment{}
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*targetAttachment = *suite.testAttachments["remote_account_1_status_1_attachment_1"]
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fileInStorage, err := suite.storage.Get(context.Background(), targetAttachment.File.Path)
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if err != nil {
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suite.FailNow(err.Error())
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}
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code, headers, body := suite.GetFile(
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targetAttachment.AccountID,
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media.TypeAttachment,
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media.SizeOriginal,
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targetAttachment.ID+".jpeg",
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)
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||||
|
||||
suite.Equal(http.StatusOK, code)
|
||||
suite.Equal("image/jpeg", headers.Get("content-type"))
|
||||
suite.Equal(fileInStorage, body)
|
||||
}
|
||||
|
||||
func (suite *ServeFileTestSuite) TestServeSmallRemoteFileOK() {
|
||||
targetAttachment := >smodel.MediaAttachment{}
|
||||
*targetAttachment = *suite.testAttachments["remote_account_1_status_1_attachment_1"]
|
||||
fileInStorage, err := suite.storage.Get(context.Background(), targetAttachment.Thumbnail.Path)
|
||||
if err != nil {
|
||||
suite.FailNow(err.Error())
|
||||
}
|
||||
|
||||
code, headers, body := suite.GetFile(
|
||||
targetAttachment.AccountID,
|
||||
media.TypeAttachment,
|
||||
media.SizeSmall,
|
||||
targetAttachment.ID+".jpeg",
|
||||
)
|
||||
|
||||
suite.Equal(http.StatusOK, code)
|
||||
suite.Equal("image/jpeg", headers.Get("content-type"))
|
||||
suite.Equal(fileInStorage, body)
|
||||
}
|
||||
|
||||
func (suite *ServeFileTestSuite) TestServeOriginalRemoteFileRecache() {
|
||||
targetAttachment := >smodel.MediaAttachment{}
|
||||
*targetAttachment = *suite.testAttachments["remote_account_1_status_1_attachment_1"]
|
||||
fileInStorage, err := suite.storage.Get(context.Background(), targetAttachment.File.Path)
|
||||
if err != nil {
|
||||
suite.FailNow(err.Error())
|
||||
}
|
||||
|
||||
// uncache the attachment so we'll have to refetch it from the 'remote' instance
|
||||
suite.UncacheAttachment(targetAttachment)
|
||||
|
||||
code, headers, body := suite.GetFile(
|
||||
targetAttachment.AccountID,
|
||||
media.TypeAttachment,
|
||||
media.SizeOriginal,
|
||||
targetAttachment.ID+".jpeg",
|
||||
)
|
||||
|
||||
suite.Equal(http.StatusOK, code)
|
||||
suite.Equal("image/jpeg", headers.Get("content-type"))
|
||||
suite.Equal(fileInStorage, body)
|
||||
}
|
||||
|
||||
func (suite *ServeFileTestSuite) TestServeSmallRemoteFileRecache() {
|
||||
targetAttachment := >smodel.MediaAttachment{}
|
||||
*targetAttachment = *suite.testAttachments["remote_account_1_status_1_attachment_1"]
|
||||
fileInStorage, err := suite.storage.Get(context.Background(), targetAttachment.Thumbnail.Path)
|
||||
if err != nil {
|
||||
suite.FailNow(err.Error())
|
||||
}
|
||||
|
||||
// uncache the attachment so we'll have to refetch it from the 'remote' instance
|
||||
suite.UncacheAttachment(targetAttachment)
|
||||
|
||||
code, headers, body := suite.GetFile(
|
||||
targetAttachment.AccountID,
|
||||
media.TypeAttachment,
|
||||
media.SizeSmall,
|
||||
targetAttachment.ID+".jpeg",
|
||||
)
|
||||
|
||||
suite.Equal(http.StatusOK, code)
|
||||
suite.Equal("image/jpeg", headers.Get("content-type"))
|
||||
suite.Equal(fileInStorage, body)
|
||||
}
|
||||
|
||||
func (suite *ServeFileTestSuite) TestServeOriginalRemoteFileRecacheNotFound() {
|
||||
targetAttachment := >smodel.MediaAttachment{}
|
||||
*targetAttachment = *suite.testAttachments["remote_account_1_status_1_attachment_1"]
|
||||
|
||||
// uncache the attachment *and* set the remote URL to something that will return a 404
|
||||
suite.UncacheAttachment(targetAttachment)
|
||||
targetAttachment.RemoteURL = "http://nothing.at.this.url/weeeeeeeee"
|
||||
if err := suite.db.UpdateByID(context.Background(), targetAttachment, targetAttachment.ID, "remote_url"); err != nil {
|
||||
suite.FailNow(err.Error())
|
||||
}
|
||||
|
||||
code, _, _ := suite.GetFile(
|
||||
targetAttachment.AccountID,
|
||||
media.TypeAttachment,
|
||||
media.SizeOriginal,
|
||||
targetAttachment.ID+".jpeg",
|
||||
)
|
||||
|
||||
suite.Equal(http.StatusNotFound, code)
|
||||
}
|
||||
|
||||
func (suite *ServeFileTestSuite) TestServeSmallRemoteFileRecacheNotFound() {
|
||||
targetAttachment := >smodel.MediaAttachment{}
|
||||
*targetAttachment = *suite.testAttachments["remote_account_1_status_1_attachment_1"]
|
||||
|
||||
// uncache the attachment *and* set the remote URL to something that will return a 404
|
||||
suite.UncacheAttachment(targetAttachment)
|
||||
targetAttachment.RemoteURL = "http://nothing.at.this.url/weeeeeeeee"
|
||||
if err := suite.db.UpdateByID(context.Background(), targetAttachment, targetAttachment.ID, "remote_url"); err != nil {
|
||||
suite.FailNow(err.Error())
|
||||
}
|
||||
|
||||
code, _, _ := suite.GetFile(
|
||||
targetAttachment.AccountID,
|
||||
media.TypeAttachment,
|
||||
media.SizeSmall,
|
||||
targetAttachment.ID+".jpeg",
|
||||
)
|
||||
|
||||
suite.Equal(http.StatusNotFound, code)
|
||||
}
|
||||
|
||||
// Callers trying to get some random-ass file that doesn't exist should just get a 404
|
||||
func (suite *ServeFileTestSuite) TestServeFileNotFound() {
|
||||
code, _, _ := suite.GetFile(
|
||||
"01GMMY4G9B0QEG0PQK5Q5JGJWZ",
|
||||
media.TypeAttachment,
|
||||
media.SizeOriginal,
|
||||
"01GMMY68Y7E5DJ3CA3Y9SS8524.jpeg",
|
||||
)
|
||||
|
||||
suite.Equal(http.StatusNotFound, code)
|
||||
}
|
||||
|
||||
func TestServeFileTestSuite(t *testing.T) {
|
||||
|
|
|
|||
121
internal/iotools/io.go
Normal file
121
internal/iotools/io.go
Normal file
|
|
@ -0,0 +1,121 @@
|
|||
/*
|
||||
GoToSocial
|
||||
Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
|
||||
|
||||
This program is free software: you can redistribute it and/or modify
|
||||
it under the terms of the GNU Affero General Public License as published by
|
||||
the Free Software Foundation, either version 3 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU Affero General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Affero General Public License
|
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
package iotools
|
||||
|
||||
import (
|
||||
"io"
|
||||
)
|
||||
|
||||
// ReadFnCloser takes an io.Reader and wraps it to use the provided function to implement io.Closer.
|
||||
func ReadFnCloser(r io.Reader, close func() error) io.ReadCloser {
|
||||
return &readFnCloser{
|
||||
Reader: r,
|
||||
close: close,
|
||||
}
|
||||
}
|
||||
|
||||
type readFnCloser struct {
|
||||
io.Reader
|
||||
close func() error
|
||||
}
|
||||
|
||||
func (r *readFnCloser) Close() error {
|
||||
return r.close()
|
||||
}
|
||||
|
||||
// WriteFnCloser takes an io.Writer and wraps it to use the provided function to implement io.Closer.
|
||||
func WriteFnCloser(w io.Writer, close func() error) io.WriteCloser {
|
||||
return &writeFnCloser{
|
||||
Writer: w,
|
||||
close: close,
|
||||
}
|
||||
}
|
||||
|
||||
type writeFnCloser struct {
|
||||
io.Writer
|
||||
close func() error
|
||||
}
|
||||
|
||||
func (r *writeFnCloser) Close() error {
|
||||
return r.close()
|
||||
}
|
||||
|
||||
// SilentReader wraps an io.Reader to silence any
|
||||
// error output during reads. Instead they are stored
|
||||
// and accessible (not concurrency safe!) via .Error().
|
||||
type SilentReader struct {
|
||||
io.Reader
|
||||
err error
|
||||
}
|
||||
|
||||
// SilenceReader wraps an io.Reader within SilentReader{}.
|
||||
func SilenceReader(r io.Reader) *SilentReader {
|
||||
return &SilentReader{Reader: r}
|
||||
}
|
||||
|
||||
func (r *SilentReader) Read(b []byte) (int, error) {
|
||||
n, err := r.Reader.Read(b)
|
||||
if err != nil {
|
||||
// Store error for now
|
||||
if r.err == nil {
|
||||
r.err = err
|
||||
}
|
||||
|
||||
// Pretend we're happy
|
||||
// to continue reading.
|
||||
n = len(b)
|
||||
}
|
||||
return n, nil
|
||||
}
|
||||
|
||||
func (r *SilentReader) Error() error {
|
||||
return r.err
|
||||
}
|
||||
|
||||
// SilentWriter wraps an io.Writer to silence any
|
||||
// error output during writes. Instead they are stored
|
||||
// and accessible (not concurrency safe!) via .Error().
|
||||
type SilentWriter struct {
|
||||
io.Writer
|
||||
err error
|
||||
}
|
||||
|
||||
// SilenceWriter wraps an io.Writer within SilentWriter{}.
|
||||
func SilenceWriter(w io.Writer) *SilentWriter {
|
||||
return &SilentWriter{Writer: w}
|
||||
}
|
||||
|
||||
func (w *SilentWriter) Write(b []byte) (int, error) {
|
||||
n, err := w.Writer.Write(b)
|
||||
if err != nil {
|
||||
// Store error for now
|
||||
if w.err == nil {
|
||||
w.err = err
|
||||
}
|
||||
|
||||
// Pretend we're happy
|
||||
// to continue writing.
|
||||
n = len(b)
|
||||
}
|
||||
return n, nil
|
||||
}
|
||||
|
||||
func (w *SilentWriter) Error() error {
|
||||
return w.err
|
||||
}
|
||||
|
|
@ -19,7 +19,6 @@
|
|||
package media
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"context"
|
||||
"fmt"
|
||||
"io"
|
||||
|
|
@ -29,7 +28,7 @@ import (
|
|||
apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
|
||||
"github.com/superseriousbusiness/gotosocial/internal/gtserror"
|
||||
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
|
||||
"github.com/superseriousbusiness/gotosocial/internal/log"
|
||||
"github.com/superseriousbusiness/gotosocial/internal/iotools"
|
||||
"github.com/superseriousbusiness/gotosocial/internal/media"
|
||||
"github.com/superseriousbusiness/gotosocial/internal/transport"
|
||||
"github.com/superseriousbusiness/gotosocial/internal/uris"
|
||||
|
|
@ -135,7 +134,6 @@ func (p *processor) getAttachmentContent(ctx context.Context, requestingAccount
|
|||
}
|
||||
|
||||
var data media.DataFunc
|
||||
var postDataCallback media.PostDataCallbackFunc
|
||||
|
||||
if mediaSize == media.SizeSmall {
|
||||
// if it's the thumbnail that's requested then the user will have to wait a bit while we process the
|
||||
|
|
@ -155,7 +153,7 @@ func (p *processor) getAttachmentContent(ctx context.Context, requestingAccount
|
|||
//
|
||||
// this looks a bit like this:
|
||||
//
|
||||
// http fetch buffered pipe
|
||||
// http fetch pipe
|
||||
// remote server ------------> data function ----------------> api caller
|
||||
// |
|
||||
// | tee
|
||||
|
|
@ -163,54 +161,58 @@ func (p *processor) getAttachmentContent(ctx context.Context, requestingAccount
|
|||
// ▼
|
||||
// instance storage
|
||||
|
||||
// Buffer each end of the pipe, so that if the caller drops the connection during the flow, the tee
|
||||
// reader can continue without having to worry about tee-ing into a closed or blocked pipe.
|
||||
// This pipe will connect the caller to the in-process media retrieval...
|
||||
pipeReader, pipeWriter := io.Pipe()
|
||||
bufferedWriter := bufio.NewWriterSize(pipeWriter, int(attachmentContent.ContentLength))
|
||||
bufferedReader := bufio.NewReaderSize(pipeReader, int(attachmentContent.ContentLength))
|
||||
|
||||
// the caller will read from the buffered reader, so it doesn't matter if they drop out without reading everything
|
||||
attachmentContent.Content = io.NopCloser(bufferedReader)
|
||||
// Wrap the output pipe to silence any errors during the actual media
|
||||
// streaming process. We catch the error later but they must be silenced
|
||||
// during stream to prevent interruptions to storage of the actual media.
|
||||
silencedWriter := iotools.SilenceWriter(pipeWriter)
|
||||
|
||||
// Pass the reader side of the pipe to the caller to slurp from.
|
||||
attachmentContent.Content = pipeReader
|
||||
|
||||
// Create a data function which injects the writer end of the pipe
|
||||
// into the data retrieval process. If something goes wrong while
|
||||
// doing the data retrieval, we hang up the underlying pipeReader
|
||||
// to indicate to the caller that no data is available. It's up to
|
||||
// the caller of this processor function to handle that gracefully.
|
||||
data = func(innerCtx context.Context) (io.ReadCloser, int64, error) {
|
||||
t, err := p.transportController.NewTransportForUsername(innerCtx, requestingUsername)
|
||||
if err != nil {
|
||||
// propagate the transport error to read end of pipe.
|
||||
_ = pipeWriter.CloseWithError(fmt.Errorf("error getting transport for user: %w", err))
|
||||
return nil, 0, err
|
||||
}
|
||||
|
||||
readCloser, fileSize, err := t.DereferenceMedia(transport.WithFastfail(innerCtx), remoteMediaIRI)
|
||||
if err != nil {
|
||||
// propagate the dereference error to read end of pipe.
|
||||
_ = pipeWriter.CloseWithError(fmt.Errorf("error dereferencing media: %w", err))
|
||||
return nil, 0, err
|
||||
}
|
||||
|
||||
// Make a TeeReader so that everything read from the readCloser by the media manager will be written into the bufferedWriter.
|
||||
// We wrap this in a teeReadCloser which implements io.ReadCloser, so that whoever uses the teeReader can close the readCloser
|
||||
// when they're done with it.
|
||||
trc := teeReadCloser{
|
||||
teeReader: io.TeeReader(readCloser, bufferedWriter),
|
||||
close: readCloser.Close,
|
||||
}
|
||||
// Make a TeeReader so that everything read from the readCloser,
|
||||
// aka the remote instance, will also be written into the pipe.
|
||||
teeReader := io.TeeReader(readCloser, silencedWriter)
|
||||
|
||||
return trc, fileSize, nil
|
||||
}
|
||||
|
||||
// close the pipewriter after data has been piped into it, so the reader on the other side doesn't block;
|
||||
// we don't need to close the reader here because that's the caller's responsibility
|
||||
postDataCallback = func(innerCtx context.Context) error {
|
||||
// close the underlying pipe writer when we're done with it
|
||||
// Wrap teereader to implement original readcloser's close,
|
||||
// and also ensuring that we close the pipe from write end.
|
||||
return iotools.ReadFnCloser(teeReader, func() error {
|
||||
defer func() {
|
||||
if err := pipeWriter.Close(); err != nil {
|
||||
log.Errorf("getAttachmentContent: error closing pipeWriter: %s", err)
|
||||
}
|
||||
// We use the error (if any) encountered by the
|
||||
// silenced writer to close connection to make sure it
|
||||
// gets propagated to the attachment.Content reader.
|
||||
_ = pipeWriter.CloseWithError(silencedWriter.Error())
|
||||
}()
|
||||
|
||||
// and flush the buffered writer into the buffer of the reader
|
||||
return bufferedWriter.Flush()
|
||||
return readCloser.Close()
|
||||
}), fileSize, nil
|
||||
}
|
||||
}
|
||||
|
||||
// put the media recached in the queue
|
||||
processingMedia, err := p.mediaManager.RecacheMedia(ctx, data, postDataCallback, wantedMediaID)
|
||||
processingMedia, err := p.mediaManager.RecacheMedia(ctx, data, nil, wantedMediaID)
|
||||
if err != nil {
|
||||
return nil, gtserror.NewErrorNotFound(fmt.Errorf("error recaching media: %s", err))
|
||||
}
|
||||
|
|
|
|||
|
|
@ -19,6 +19,7 @@
|
|||
package media_test
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"context"
|
||||
"io"
|
||||
"path"
|
||||
|
|
@ -143,9 +144,13 @@ func (suite *GetFileTestSuite) TestGetRemoteFileUncachedInterrupted() {
|
|||
suite.NotNil(content)
|
||||
|
||||
// only read the first kilobyte and then stop
|
||||
b := make([]byte, 1024)
|
||||
_, err = content.Content.Read(b)
|
||||
suite.NoError(err)
|
||||
b := make([]byte, 0, 1024)
|
||||
if !testrig.WaitFor(func() bool {
|
||||
read, err := io.CopyN(bytes.NewBuffer(b), content.Content, 1024)
|
||||
return err == nil && read == 1024
|
||||
}) {
|
||||
suite.FailNow("timed out trying to read first 1024 bytes")
|
||||
}
|
||||
|
||||
// close the reader
|
||||
suite.NoError(content.Content.Close())
|
||||
|
|
|
|||
|
|
@ -20,7 +20,6 @@ package media
|
|||
|
||||
import (
|
||||
"fmt"
|
||||
"io"
|
||||
"strconv"
|
||||
"strings"
|
||||
)
|
||||
|
|
@ -62,16 +61,3 @@ func parseFocus(focus string) (focusx, focusy float32, err error) {
|
|||
focusy = float32(fy)
|
||||
return
|
||||
}
|
||||
|
||||
type teeReadCloser struct {
|
||||
teeReader io.Reader
|
||||
close func() error
|
||||
}
|
||||
|
||||
func (t teeReadCloser) Read(p []byte) (n int, err error) {
|
||||
return t.teeReader.Read(p)
|
||||
}
|
||||
|
||||
func (t teeReadCloser) Close() error {
|
||||
return t.close()
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue