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Simplify data verification with HashReader. (#5071)

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Verify() was being called by caller after the data
has been successfully read after io.EOF. This disconnection
opens a race under concurrent access to such an object.
Verification is not necessary outside of Read() call,
we can simply just do checksum verification right inside
Read() call at io.EOF.

This approach simplifies the usage.
This commit is contained in:
Harshavardhana
2017-10-21 22:30:34 -07:00
committed by Nitish Tiwari
parent 65a817fe8c
commit 1d8a8c63db
51 changed files with 749 additions and 499 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
cmd/web-handlers_test.go
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@@ -38,6 +38,7 @@ import (
humanize "github.com/dustin/go-humanize"
"github.com/minio/minio-go/pkg/policy"
"github.com/minio/minio-go/pkg/set"
"github.com/minio/minio/pkg/hash"
)
// Tests private function writeWebErrorResponse.
@@ -61,7 +62,7 @@ func TestWriteWebErrorResponse(t *testing.T) {
apiErrCode: ErrInvalidBucketName,
},
{
webErr: BadDigest{},
webErr: hash.BadDigest{},
apiErrCode: ErrBadDigest,
},
{
@@ -383,7 +384,7 @@ func testListObjectsWebHandler(obj ObjectLayer, instanceType string, t TestErrHa
data := bytes.Repeat([]byte("a"), objectSize)
metadata := map[string]string{"etag": "c9a34cfc85d982698c6ac89f76071abd"}
_, err = obj.PutObject(bucketName, objectName, NewHashReader(bytes.NewReader(data), int64(len(data)), metadata["etag"], ""), metadata)
_, err = obj.PutObject(bucketName, objectName, mustGetHashReader(t, bytes.NewReader(data), int64(len(data)), metadata["etag"], ""), metadata)
if err != nil {
t.Fatalf("Was not able to upload an object, %v", err)
@@ -477,14 +478,14 @@ func testRemoveObjectWebHandler(obj ObjectLayer, instanceType string, t TestErrH
data := bytes.Repeat([]byte("a"), objectSize)
metadata := map[string]string{"etag": "c9a34cfc85d982698c6ac89f76071abd"}
_, err = obj.PutObject(bucketName, objectName, NewHashReader(bytes.NewReader(data), int64(len(data)), metadata["etag"], ""), metadata)
_, err = obj.PutObject(bucketName, objectName, mustGetHashReader(t, bytes.NewReader(data), int64(len(data)), metadata["etag"], ""), metadata)
if err != nil {
t.Fatalf("Was not able to upload an object, %v", err)
}
objectName = "a/object"
metadata = map[string]string{"etag": "c9a34cfc85d982698c6ac89f76071abd"}
_, err = obj.PutObject(bucketName, objectName, NewHashReader(bytes.NewReader(data), int64(len(data)), metadata["etag"], ""), metadata)
_, err = obj.PutObject(bucketName, objectName, mustGetHashReader(t, bytes.NewReader(data), int64(len(data)), metadata["etag"], ""), metadata)
if err != nil {
t.Fatalf("Was not able to upload an object, %v", err)
}
@@ -865,7 +866,7 @@ func testDownloadWebHandler(obj ObjectLayer, instanceType string, t TestErrHandl
content := []byte("temporary file's content")
metadata := map[string]string{"etag": "01ce59706106fe5e02e7f55fffda7f34"}
_, err = obj.PutObject(bucketName, objectName, NewHashReader(bytes.NewReader(content), int64(len(content)), metadata["etag"], ""), metadata)
_, err = obj.PutObject(bucketName, objectName, mustGetHashReader(t, bytes.NewReader(content), int64(len(content)), metadata["etag"], ""), metadata)
if err != nil {
t.Fatalf("Was not able to upload an object, %v", err)
}
@@ -957,9 +958,9 @@ func testWebHandlerDownloadZip(obj ObjectLayer, instanceType string, t TestErrHa
t.Fatalf("%s : %s", instanceType, err)
}
obj.PutObject(bucket, "a/one", NewHashReader(strings.NewReader(fileOne), int64(len(fileOne)), "", ""), nil)
obj.PutObject(bucket, "a/b/two", NewHashReader(strings.NewReader(fileTwo), int64(len(fileTwo)), "", ""), nil)
obj.PutObject(bucket, "a/c/three", NewHashReader(strings.NewReader(fileThree), int64(len(fileThree)), "", ""), nil)
obj.PutObject(bucket, "a/one", mustGetHashReader(t, strings.NewReader(fileOne), int64(len(fileOne)), "", ""), nil)
obj.PutObject(bucket, "a/b/two", mustGetHashReader(t, strings.NewReader(fileTwo), int64(len(fileTwo)), "", ""), nil)
obj.PutObject(bucket, "a/c/three", mustGetHashReader(t, strings.NewReader(fileThree), int64(len(fileThree)), "", ""), nil)
test := func(token string) (int, []byte) {
rec := httptest.NewRecorder()
@@ -1044,7 +1045,7 @@ func testWebPresignedGetHandler(obj ObjectLayer, instanceType string, t TestErrH
data := bytes.Repeat([]byte("a"), objectSize)
metadata := map[string]string{"etag": "c9a34cfc85d982698c6ac89f76071abd"}
_, err = obj.PutObject(bucketName, objectName, NewHashReader(bytes.NewReader(data), int64(len(data)), metadata["etag"], ""), metadata)
_, err = obj.PutObject(bucketName, objectName, mustGetHashReader(t, bytes.NewReader(data), int64(len(data)), metadata["etag"], ""), metadata)
if err != nil {
t.Fatalf("Was not able to upload an object, %v", err)
}