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Round 4 

Signed-off-by: Doug Davis <dug@us.ibm.com>
master
Doug Davis 2015-06-03 06:52:39 -07:00
parent b8b16b78f4
commit 56349665b7
13 changed files with 334 additions and 197 deletions
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242
docs/api/errcode/errors.go
View File

@ -1,106 +1,29 @@
package errcode
import (
"encoding/json"
"fmt"
"net/http"
"strings"
"sync"
)
// ErrorCoder is the base interface for ErrorCode and Error allowing
// users of each to just call ErrorCode to get the real ID of each
type ErrorCoder interface {
ErrorCode() ErrorCode
}
// ErrorCode represents the error type. The errors are serialized via strings
// and the integer format may change and should *never* be exported.
type ErrorCode int
// ErrorDescriptor provides relevant information about a given error code.
type ErrorDescriptor struct {
// Code is the error code that this descriptor describes.
Code ErrorCode
// Value provides a unique, string key, often captilized with
// underscores, to identify the error code. This value is used as the
// keyed value when serializing api errors.
Value string
// Message is a short, human readable decription of the error condition
// included in API responses.
Message string
// Description provides a complete account of the errors purpose, suitable
// for use in documentation.
Description string
// HTTPStatusCode provides the http status code that is associated with
// this error condition.
HTTPStatusCode int
// ErrorCode just returns itself
func (ec ErrorCode) ErrorCode() ErrorCode {
return ec
}
var (
errorCodeToDescriptors = map[ErrorCode]ErrorDescriptor{}
idToDescriptors = map[string]ErrorDescriptor{}
groupToDescriptors = map[string][]ErrorDescriptor{}
)
// ErrorCodeUnknown is a generic error that can be used as a last
// resort if there is no situation-specific error message that can be used
var ErrorCodeUnknown = Register("registry.api.errcode", ErrorDescriptor{
Value: "UNKNOWN",
Message: "unknown error",
Description: `Generic error returned when the error does not have an
API classification.`,
HTTPStatusCode: http.StatusInternalServerError,
})
var nextCode = 1000
var registerLock sync.Mutex
// Register will make the passed-in error known to the environment and
// return a new ErrorCode
func Register(group string, descriptor ErrorDescriptor) ErrorCode {
registerLock.Lock()
defer registerLock.Unlock()
code := ErrorCode(nextCode)
descriptor.Code = code
if _, ok := idToDescriptors[descriptor.Value]; ok {
panic(fmt.Sprintf("ErrorValue %s is already registered", descriptor.Value))
}
if _, ok := errorCodeToDescriptors[descriptor.Code]; ok {
panic(fmt.Sprintf("ErrorCode %d is already registered", descriptor.Code))
}
groupToDescriptors[group] = append(groupToDescriptors[group], descriptor)
errorCodeToDescriptors[code] = descriptor
idToDescriptors[descriptor.Value] = descriptor
nextCode++
return code
}
// ParseErrorCode returns the value by the string error code.
// `ErrorCodeUnknown` will be returned if the error is not known.
func ParseErrorCode(value string) ErrorCode {
ed, ok := idToDescriptors[value]
if ok {
return ed.Code
}
return ErrorCodeUnknown
}
// GetGroupNames returns the list of Error group names that are registered
func GetGroupNames() []string {
keys := []string{}
for k := range groupToDescriptors {
keys = append(keys, k)
}
return keys
}
// GetErrorCodeGroup returns the named group of error descriptors
func GetErrorCodeGroup(name string) []ErrorDescriptor {
return groupToDescriptors[name]
// Error returns the ID/Value
func (ec ErrorCode) Error() string {
return ec.Descriptor().Value
}
// Descriptor returns the descriptor for the error code.
@ -143,12 +66,30 @@ func (ec *ErrorCode) UnmarshalText(text []byte) error {
return nil
}
// WithDetail creates a new Error struct based on the passed-in info and
// set the Detail property appropriately
func (ec ErrorCode) WithDetail(detail interface{}) Error {
if err, ok := detail.(error); ok {
detail = err.Error()
}
return Error{
Code: ec,
Detail: detail,
}
}
// Error provides a wrapper around ErrorCode with extra Details provided.
type Error struct {
Code ErrorCode `json:"code"`
Detail interface{} `json:"detail,omitempty"`
}
// ErrorCode returns the ID/Value of this Error
func (e Error) ErrorCode() ErrorCode {
return e.Code
}
// Error returns a human readable representation of the error.
func (e Error) Error() string {
return fmt.Sprintf("%s: %s",
@ -161,30 +102,43 @@ func (e Error) Message() string {
return e.Code.Message()
}
// ErrorDescriptor provides relevant information about a given error code.
type ErrorDescriptor struct {
// Code is the error code that this descriptor describes.
Code ErrorCode
// Value provides a unique, string key, often captilized with
// underscores, to identify the error code. This value is used as the
// keyed value when serializing api errors.
Value string
// Message is a short, human readable decription of the error condition
// included in API responses.
Message string
// Description provides a complete account of the errors purpose, suitable
// for use in documentation.
Description string
// HTTPStatusCode provides the http status code that is associated with
// this error condition.
HTTPStatusCode int
}
// ParseErrorCode returns the value by the string error code.
// `ErrorCodeUnknown` will be returned if the error is not known.
func ParseErrorCode(value string) ErrorCode {
ed, ok := idToDescriptors[value]
if ok {
return ed.Code
}
return ErrorCodeUnknown
}
// Errors provides the envelope for multiple errors and a few sugar methods
// for use within the application.
type Errors []Error
// NewError creates a new Error struct based on the passed-in info
func NewError(code ErrorCode, details ...interface{}) Error {
if len(details) > 1 {
panic("please specify zero or one detail items for this error")
}
var detail interface{}
if len(details) > 0 {
detail = details[0]
}
if err, ok := detail.(error); ok {
detail = err.Error()
}
return Error{
Code: code,
Detail: detail,
}
}
type Errors []error
func (errs Errors) Error() string {
switch len(errs) {
@ -205,3 +159,67 @@ func (errs Errors) Error() string {
func (errs Errors) Len() int {
return len(errs)
}
// jsonError extends Error with 'Message' so that we can include the
// error text, just in case the receiver of the JSON doesn't have this
// particular ErrorCode registered
type jsonError struct {
Code ErrorCode `json:"code"`
Message string `json:"message"`
Detail interface{} `json:"detail,omitempty"`
}
// MarshalJSON converts slice of error, ErrorCode or Error into a
// slice of Error - then serializes
func (errs Errors) MarshalJSON() ([]byte, error) {
var tmpErrs []jsonError
for _, daErr := range errs {
var err Error
switch daErr.(type) {
case ErrorCode:
err = daErr.(ErrorCode).WithDetail(nil)
case Error:
err = daErr.(Error)
default:
err = ErrorCodeUnknown.WithDetail(daErr)
}
tmpErrs = append(tmpErrs, jsonError{
Code: err.Code,
Message: err.Message(),
Detail: err.Detail,
})
}
return json.Marshal(tmpErrs)
}
// UnmarshalJSON deserializes []Error and then converts it into slice of
// Error or ErrorCode
func (errs *Errors) UnmarshalJSON(data []byte) error {
var tmpErrs []jsonError
if err := json.Unmarshal(data, &tmpErrs); err != nil {
return err
}
var newErrs Errors
for _, daErr := range tmpErrs {
if daErr.Detail == nil {
// Error's w/o details get converted to ErrorCode
newErrs = append(newErrs, daErr.Code)
} else {
// Error's w/ details are untouched
newErrs = append(newErrs, Error{
Code: daErr.Code,
Detail: daErr.Detail,
})
}
}
*errs = newErrs
return nil
}

12
docs/api/errcode/errors_test.go
View File

@ -79,8 +79,8 @@ var ErrorCodeTest2 = Register("v2.errors", ErrorDescriptor{
func TestErrorsManagement(t *testing.T) {
var errs Errors
errs = append(errs, NewError(ErrorCodeTest1))
errs = append(errs, NewError(ErrorCodeTest2,
errs = append(errs, ErrorCodeTest1)
errs = append(errs, ErrorCodeTest2.WithDetail(
map[string]interface{}{"digest": "sometestblobsumdoesntmatter"}))
p, err := json.Marshal(errs)
@ -89,10 +89,10 @@ func TestErrorsManagement(t *testing.T) {
t.Fatalf("error marashaling errors: %v", err)
}
expectedJSON := "[{\"code\":\"TEST1\"},{\"code\":\"TEST2\",\"detail\":{\"digest\":\"sometestblobsumdoesntmatter\"}}]"
expectedJSON := "[{\"code\":\"TEST1\",\"message\":\"test error 1\"},{\"code\":\"TEST2\",\"message\":\"test error 2\",\"detail\":{\"digest\":\"sometestblobsumdoesntmatter\"}}]"
if string(p) != expectedJSON {
t.Fatalf("unexpected json: %q != %q", string(p), expectedJSON)
t.Fatalf("unexpected json:\ngot:\n%q\n\nexpected:\n%q", string(p), expectedJSON)
}
// Now test the reverse
@ -106,8 +106,8 @@ func TestErrorsManagement(t *testing.T) {
}
// Test again with a single value this time
errs = Errors{NewError(ErrorCodeUnknown)}
expectedJSON = "[{\"code\":\"UNKNOWN\"}]"
errs = Errors{ErrorCodeUnknown}
expectedJSON = "[{\"code\":\"UNKNOWN\",\"message\":\"unknown error\"}]"
p, err = json.Marshal(errs)
if err != nil {

86
docs/api/errcode/register.go Normal file
View File

@ -0,0 +1,86 @@
package errcode
import (
"fmt"
"net/http"
"sort"
"sync"
)
var (
errorCodeToDescriptors = map[ErrorCode]ErrorDescriptor{}
idToDescriptors = map[string]ErrorDescriptor{}
groupToDescriptors = map[string][]ErrorDescriptor{}
)
// ErrorCodeUnknown is a generic error that can be used as a last
// resort if there is no situation-specific error message that can be used
var ErrorCodeUnknown = Register("errcode", ErrorDescriptor{
Value: "UNKNOWN",
Message: "unknown error",
Description: `Generic error returned when the error does not have an
API classification.`,
HTTPStatusCode: http.StatusInternalServerError,
})
var nextCode = 1000
var registerLock sync.Mutex
// Register will make the passed-in error known to the environment and
// return a new ErrorCode
func Register(group string, descriptor ErrorDescriptor) ErrorCode {
registerLock.Lock()
defer registerLock.Unlock()
descriptor.Code = ErrorCode(nextCode)
if _, ok := idToDescriptors[descriptor.Value]; ok {
panic(fmt.Sprintf("ErrorValue %q is already registered", descriptor.Value))
}
if _, ok := errorCodeToDescriptors[descriptor.Code]; ok {
panic(fmt.Sprintf("ErrorCode %v is already registered", descriptor.Code))
}
groupToDescriptors[group] = append(groupToDescriptors[group], descriptor)
errorCodeToDescriptors[descriptor.Code] = descriptor
idToDescriptors[descriptor.Value] = descriptor
nextCode++
return descriptor.Code
}
type byValue []ErrorDescriptor
func (a byValue) Len() int { return len(a) }
func (a byValue) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
func (a byValue) Less(i, j int) bool { return a[i].Value < a[j].Value }
// GetGroupNames returns the list of Error group names that are registered
func GetGroupNames() []string {
keys := []string{}
for k := range groupToDescriptors {
keys = append(keys, k)
}
sort.Strings(keys)
return keys
}
// GetErrorCodeGroup returns the named group of error descriptors
func GetErrorCodeGroup(name string) []ErrorDescriptor {
desc := groupToDescriptors[name]
sort.Sort(byValue(desc))
return desc
}
// GetErrorAllDescriptors returns a slice of all ErrorDescriptors that are
// registered, irrespective of what group they're in
func GetErrorAllDescriptors() []ErrorDescriptor {
result := []ErrorDescriptor{}
for _, group := range GetGroupNames() {
result = append(result, GetErrorCodeGroup(group)...)
}
sort.Sort(byValue(result))
return result
}

30
docs/api/v2/errors.go
View File

@ -6,9 +6,11 @@ import (
"github.com/docker/distribution/registry/api/errcode"
)
const errGroup = "registry.api.v2"
var (
// ErrorCodeUnsupported is returned when an operation is not supported.
ErrorCodeUnsupported = errcode.Register("registry.api.v2", errcode.ErrorDescriptor{
ErrorCodeUnsupported = errcode.Register(errGroup, errcode.ErrorDescriptor{
Value: "UNSUPPORTED",
Message: "The operation is unsupported.",
Description: `The operation was unsupported due to a missing
@ -16,7 +18,7 @@ var (
})
// ErrorCodeUnauthorized is returned if a request is not authorized.
ErrorCodeUnauthorized = errcode.Register("registry.api.v2", errcode.ErrorDescriptor{
ErrorCodeUnauthorized = errcode.Register(errGroup, errcode.ErrorDescriptor{
Value: "UNAUTHORIZED",
Message: "access to the requested resource is not authorized",
Description: `The access controller denied access for the operation on
@ -27,7 +29,7 @@ var (
// ErrorCodeDigestInvalid is returned when uploading a blob if the
// provided digest does not match the blob contents.
ErrorCodeDigestInvalid = errcode.Register("registry.api.v2", errcode.ErrorDescriptor{
ErrorCodeDigestInvalid = errcode.Register(errGroup, errcode.ErrorDescriptor{
Value: "DIGEST_INVALID",
Message: "provided digest did not match uploaded content",
Description: `When a blob is uploaded, the registry will check that
@ -39,7 +41,7 @@ var (
})
// ErrorCodeSizeInvalid is returned when uploading a blob if the provided
ErrorCodeSizeInvalid = errcode.Register("registry.api.v2", errcode.ErrorDescriptor{
ErrorCodeSizeInvalid = errcode.Register(errGroup, errcode.ErrorDescriptor{
Value: "SIZE_INVALID",
Message: "provided length did not match content length",
Description: `When a layer is uploaded, the provided size will be
@ -50,7 +52,7 @@ var (
// ErrorCodeNameInvalid is returned when the name in the manifest does not
// match the provided name.
ErrorCodeNameInvalid = errcode.Register("registry.api.v2", errcode.ErrorDescriptor{
ErrorCodeNameInvalid = errcode.Register(errGroup, errcode.ErrorDescriptor{
Value: "NAME_INVALID",
Message: "invalid repository name",
Description: `Invalid repository name encountered either during
@ -60,7 +62,7 @@ var (
// ErrorCodeTagInvalid is returned when the tag in the manifest does not
// match the provided tag.
ErrorCodeTagInvalid = errcode.Register("registry.api.v2", errcode.ErrorDescriptor{
ErrorCodeTagInvalid = errcode.Register(errGroup, errcode.ErrorDescriptor{
Value: "TAG_INVALID",
Message: "manifest tag did not match URI",
Description: `During a manifest upload, if the tag in the manifest
@ -69,7 +71,7 @@ var (
})
// ErrorCodeNameUnknown when the repository name is not known.
ErrorCodeNameUnknown = errcode.Register("registry.api.v2", errcode.ErrorDescriptor{
ErrorCodeNameUnknown = errcode.Register(errGroup, errcode.ErrorDescriptor{
Value: "NAME_UNKNOWN",
Message: "repository name not known to registry",
Description: `This is returned if the name used during an operation is
@ -78,7 +80,7 @@ var (
})
// ErrorCodeManifestUnknown returned when image manifest is unknown.
ErrorCodeManifestUnknown = errcode.Register("registry.api.v2", errcode.ErrorDescriptor{
ErrorCodeManifestUnknown = errcode.Register(errGroup, errcode.ErrorDescriptor{
Value: "MANIFEST_UNKNOWN",
Message: "manifest unknown",
Description: `This error is returned when the manifest, identified by
@ -89,7 +91,7 @@ var (
// ErrorCodeManifestInvalid returned when an image manifest is invalid,
// typically during a PUT operation. This error encompasses all errors
// encountered during manifest validation that aren't signature errors.
ErrorCodeManifestInvalid = errcode.Register("registry.api.v2", errcode.ErrorDescriptor{
ErrorCodeManifestInvalid = errcode.Register(errGroup, errcode.ErrorDescriptor{
Value: "MANIFEST_INVALID",
Message: "manifest invalid",
Description: `During upload, manifests undergo several checks ensuring
@ -101,7 +103,7 @@ var (
// ErrorCodeManifestUnverified is returned when the manifest fails
// signature verfication.
ErrorCodeManifestUnverified = errcode.Register("registry.api.v2", errcode.ErrorDescriptor{
ErrorCodeManifestUnverified = errcode.Register(errGroup, errcode.ErrorDescriptor{
Value: "MANIFEST_UNVERIFIED",
Message: "manifest failed signature verification",
Description: `During manifest upload, if the manifest fails signature
@ -111,7 +113,7 @@ var (
// ErrorCodeManifestBlobUnknown is returned when a manifest blob is
// unknown to the registry.
ErrorCodeManifestBlobUnknown = errcode.Register("registry.api.v2", errcode.ErrorDescriptor{
ErrorCodeManifestBlobUnknown = errcode.Register(errGroup, errcode.ErrorDescriptor{
Value: "MANIFEST_BLOB_UNKNOWN",
Message: "blob unknown to registry",
Description: `This error may be returned when a manifest blob is
@ -122,7 +124,7 @@ var (
// ErrorCodeBlobUnknown is returned when a blob is unknown to the
// registry. This can happen when the manifest references a nonexistent
// layer or the result is not found by a blob fetch.
ErrorCodeBlobUnknown = errcode.Register("registry.api.v2", errcode.ErrorDescriptor{
ErrorCodeBlobUnknown = errcode.Register(errGroup, errcode.ErrorDescriptor{
Value: "BLOB_UNKNOWN",
Message: "blob unknown to registry",
Description: `This error may be returned when a blob is unknown to the
@ -133,7 +135,7 @@ var (
})
// ErrorCodeBlobUploadUnknown is returned when an upload is unknown.
ErrorCodeBlobUploadUnknown = errcode.Register("registry.api.v2", errcode.ErrorDescriptor{
ErrorCodeBlobUploadUnknown = errcode.Register(errGroup, errcode.ErrorDescriptor{
Value: "BLOB_UPLOAD_UNKNOWN",
Message: "blob upload unknown to registry",
Description: `If a blob upload has been cancelled or was never
@ -142,7 +144,7 @@ var (
})
// ErrorCodeBlobUploadInvalid is returned when an upload is invalid.
ErrorCodeBlobUploadInvalid = errcode.Register("registry.api.v2", errcode.ErrorDescriptor{
ErrorCodeBlobUploadInvalid = errcode.Register(errGroup, errcode.ErrorDescriptor{
Value: "BLOB_UPLOAD_INVALID",
Message: "blob upload invalid",
Description: `The blob upload encountered an error and can no

5
docs/client/blob_writer_test.go
View File

@ -164,7 +164,10 @@ func TestUploadReadFrom(t *testing.T) {
} else if len(uploadErr) != 1 {
t.Fatalf("Unexpected number of errors: %d, expected 1", len(uploadErr))
} else {
v2Err := uploadErr[0]
v2Err, ok := uploadErr[0].(errcode.Error)
if !ok {
t.Fatalf("Not an 'Error' type: %#v", uploadErr[0])
}
if v2Err.Code != v2.ErrorCodeBlobUploadInvalid {
t.Fatalf("Unexpected error code: %s, expected %d", v2Err.Code.String(), v2.ErrorCodeBlobUploadInvalid)
}

12
docs/handlers/api_test.go
View File

@ -780,11 +780,15 @@ func checkBodyHasErrorCodes(t *testing.T, msg string, resp *http.Response, error
counts[code] = 0
}
for _, err := range errs {
if _, ok := expected[err.Code]; !ok {
t.Fatalf("unexpected error code %v encountered during %s: %s ", err.Code, msg, string(p))
for _, e := range errs {
err, ok := e.(errcode.ErrorCoder)
if !ok {
t.Fatalf("not an ErrorCoder: %#v", e)
}
counts[err.Code]++
if _, ok := expected[err.ErrorCode()]; !ok {
t.Fatalf("unexpected error code %v encountered during %s: %s ", err.ErrorCode(), msg, string(p))
}
counts[err.ErrorCode()]++
}
// Ensure that counts of expected errors were all non-zero

33
docs/handlers/app.go
View File

@ -346,9 +346,9 @@ func (app *App) dispatcher(dispatch dispatchFunc) http.Handler {
switch err := err.(type) {
case distribution.ErrRepositoryUnknown:
context.Errors = append(context.Errors, errcode.NewError(v2.ErrorCodeNameUnknown, err))
context.Errors = append(context.Errors, v2.ErrorCodeNameUnknown.WithDetail(err))
case distribution.ErrRepositoryNameInvalid:
context.Errors = append(context.Errors, errcode.NewError(v2.ErrorCodeNameInvalid, err))
context.Errors = append(context.Errors, v2.ErrorCodeNameInvalid.WithDetail(err))
}
serveJSON(w, context.Errors)
@ -363,7 +363,7 @@ func (app *App) dispatcher(dispatch dispatchFunc) http.Handler {
context.Repository, err = applyRepoMiddleware(context.Repository, app.Config.Middleware["repository"])
if err != nil {
ctxu.GetLogger(context).Errorf("error initializing repository middleware: %v", err)
context.Errors = append(context.Errors, errcode.NewError(errcode.ErrorCodeUnknown, err))
context.Errors = append(context.Errors, errcode.ErrorCodeUnknown.WithDetail(err))
serveJSON(w, context.Errors)
return
@ -383,10 +383,25 @@ func (app *App) dispatcher(dispatch dispatchFunc) http.Handler {
}
func (app *App) logError(context context.Context, errors errcode.Errors) {
for _, e := range errors {
c := ctxu.WithValue(context, "err.code", e.Code)
c = ctxu.WithValue(c, "err.message", e.Code.Message())
c = ctxu.WithValue(c, "err.detail", e.Detail)
for _, e1 := range errors {
var c ctxu.Context
switch e1.(type) {
case errcode.Error:
e, _ := e1.(errcode.Error)
c = ctxu.WithValue(context, "err.code", e.Code)
c = ctxu.WithValue(c, "err.message", e.Code.Message())
c = ctxu.WithValue(c, "err.detail", e.Detail)
case errcode.ErrorCode:
e, _ := e1.(errcode.ErrorCode)
c = ctxu.WithValue(context, "err.code", e)
c = ctxu.WithValue(c, "err.message", e.Message())
default:
// just normal go 'error'
c = ctxu.WithValue(context, "err.code", errcode.ErrorCodeUnknown)
c = ctxu.WithValue(c, "err.message", e1.Error())
}
c = ctxu.WithLogger(c, ctxu.GetLogger(c,
"err.code",
"err.message",
@ -441,7 +456,7 @@ func (app *App) authorized(w http.ResponseWriter, r *http.Request, context *Cont
// proceed.
var errs errcode.Errors
errs = append(errs, errcode.NewError(v2.ErrorCodeUnauthorized))
errs = append(errs, v2.ErrorCodeUnauthorized)
serveJSON(w, errs)
return fmt.Errorf("forbidden: no repository name")
@ -465,7 +480,7 @@ func (app *App) authorized(w http.ResponseWriter, r *http.Request, context *Cont
err.ServeHTTP(w, r)
var errs errcode.Errors
errs = append(errs, errcode.NewError(v2.ErrorCodeUnauthorized, accessRecords))
errs = append(errs, v2.ErrorCodeUnauthorized.WithDetail(accessRecords))
serveJSON(w, errs)
default:
// This condition is a potential security problem either in

8
docs/handlers/app_test.go
View File

@ -201,8 +201,12 @@ func TestNewApp(t *testing.T) {
t.Fatalf("error decoding error response: %v", err)
}
if errs[0].Code != v2.ErrorCodeUnauthorized {
t.Fatalf("unexpected error code: %v != %v", errs[0].Code, v2.ErrorCodeUnauthorized)
err2, ok := errs[0].(errcode.ErrorCoder)
if !ok {
t.Fatalf("not an ErrorCoder: %#v", errs[0])
}
if err2.ErrorCode() != v2.ErrorCodeUnauthorized {
t.Fatalf("unexpected error code: %v != %v", err2.ErrorCode(), v2.ErrorCodeUnauthorized)
}
}

10
docs/handlers/blob.go
View File

@ -18,12 +18,12 @@ func blobDispatcher(ctx *Context, r *http.Request) http.Handler {
if err == errDigestNotAvailable {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
ctx.Errors = append(ctx.Errors, errcode.NewError(v2.ErrorCodeDigestInvalid, err))
ctx.Errors = append(ctx.Errors, v2.ErrorCodeDigestInvalid.WithDetail(err))
})
}
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
ctx.Errors = append(ctx.Errors, errcode.NewError(v2.ErrorCodeDigestInvalid, err))
ctx.Errors = append(ctx.Errors, v2.ErrorCodeDigestInvalid.WithDetail(err))
})
}
@ -53,16 +53,16 @@ func (bh *blobHandler) GetBlob(w http.ResponseWriter, r *http.Request) {
desc, err := blobs.Stat(bh, bh.Digest)
if err != nil {
if err == distribution.ErrBlobUnknown {
bh.Errors = append(bh.Errors, errcode.NewError(v2.ErrorCodeBlobUnknown, bh.Digest))
bh.Errors = append(bh.Errors, v2.ErrorCodeBlobUnknown.WithDetail(bh.Digest))
} else {
bh.Errors = append(bh.Errors, errcode.NewError(errcode.ErrorCodeUnknown, err))
bh.Errors = append(bh.Errors, errcode.ErrorCodeUnknown.WithDetail(err))
}
return
}
if err := blobs.ServeBlob(bh, w, r, desc.Digest); err != nil {
context.GetLogger(bh).Debugf("unexpected error getting blob HTTP handler: %v", err)
bh.Errors = append(bh.Errors, errcode.NewError(errcode.ErrorCodeUnknown, err))
bh.Errors = append(bh.Errors, errcode.ErrorCodeUnknown.WithDetail(err))
return
}
}

50
docs/handlers/blobupload.go
View File

@ -37,7 +37,7 @@ func blobUploadDispatcher(ctx *Context, r *http.Request) http.Handler {
if err != nil {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
ctxu.GetLogger(ctx).Infof("error resolving upload: %v", err)
buh.Errors = append(buh.Errors, errcode.NewError(v2.ErrorCodeBlobUploadInvalid, err))
buh.Errors = append(buh.Errors, v2.ErrorCodeBlobUploadInvalid.WithDetail(err))
})
}
buh.State = state
@ -45,14 +45,14 @@ func blobUploadDispatcher(ctx *Context, r *http.Request) http.Handler {
if state.Name != ctx.Repository.Name() {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
ctxu.GetLogger(ctx).Infof("mismatched repository name in upload state: %q != %q", state.Name, buh.Repository.Name())
buh.Errors = append(buh.Errors, errcode.NewError(v2.ErrorCodeBlobUploadInvalid, err))
buh.Errors = append(buh.Errors, v2.ErrorCodeBlobUploadInvalid.WithDetail(err))
})
}
if state.UUID != buh.UUID {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
ctxu.GetLogger(ctx).Infof("mismatched uuid in upload state: %q != %q", state.UUID, buh.UUID)
buh.Errors = append(buh.Errors, errcode.NewError(v2.ErrorCodeBlobUploadInvalid, err))
buh.Errors = append(buh.Errors, v2.ErrorCodeBlobUploadInvalid.WithDetail(err))
})
}
@ -62,12 +62,12 @@ func blobUploadDispatcher(ctx *Context, r *http.Request) http.Handler {
ctxu.GetLogger(ctx).Errorf("error resolving upload: %v", err)
if err == distribution.ErrBlobUploadUnknown {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
buh.Errors = append(buh.Errors, errcode.NewError(v2.ErrorCodeBlobUploadUnknown, err))
buh.Errors = append(buh.Errors, v2.ErrorCodeBlobUploadUnknown.WithDetail(err))
})
}
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
buh.Errors = append(buh.Errors, errcode.NewError(errcode.ErrorCodeUnknown, err))
buh.Errors = append(buh.Errors, errcode.ErrorCodeUnknown.WithDetail(err))
})
}
buh.Upload = upload
@ -81,14 +81,14 @@ func blobUploadDispatcher(ctx *Context, r *http.Request) http.Handler {
defer upload.Close()
ctxu.GetLogger(ctx).Infof("error seeking blob upload: %v", err)
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
buh.Errors = append(buh.Errors, errcode.NewError(v2.ErrorCodeBlobUploadInvalid, err))
buh.Errors = append(buh.Errors, v2.ErrorCodeBlobUploadInvalid.WithDetail(err))
upload.Cancel(buh)
})
} else if nn != buh.State.Offset {
defer upload.Close()
ctxu.GetLogger(ctx).Infof("seek to wrong offest: %d != %d", nn, buh.State.Offset)
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
buh.Errors = append(buh.Errors, errcode.NewError(v2.ErrorCodeBlobUploadInvalid, err))
buh.Errors = append(buh.Errors, v2.ErrorCodeBlobUploadInvalid.WithDetail(err))
upload.Cancel(buh)
})
}
@ -119,7 +119,7 @@ func (buh *blobUploadHandler) StartBlobUpload(w http.ResponseWriter, r *http.Req
blobs := buh.Repository.Blobs(buh)
upload, err := blobs.Create(buh)
if err != nil {
buh.Errors = append(buh.Errors, errcode.NewError(errcode.ErrorCodeUnknown, err))
buh.Errors = append(buh.Errors, errcode.ErrorCodeUnknown.WithDetail(err))
return
}
@ -127,7 +127,7 @@ func (buh *blobUploadHandler) StartBlobUpload(w http.ResponseWriter, r *http.Req
defer buh.Upload.Close()
if err := buh.blobUploadResponse(w, r, true); err != nil {
buh.Errors = append(buh.Errors, errcode.NewError(errcode.ErrorCodeUnknown, err))
buh.Errors = append(buh.Errors, errcode.ErrorCodeUnknown.WithDetail(err))
return
}
@ -138,7 +138,7 @@ func (buh *blobUploadHandler) StartBlobUpload(w http.ResponseWriter, r *http.Req
// GetUploadStatus returns the status of a given upload, identified by id.
func (buh *blobUploadHandler) GetUploadStatus(w http.ResponseWriter, r *http.Request) {
if buh.Upload == nil {
buh.Errors = append(buh.Errors, errcode.NewError(v2.ErrorCodeBlobUploadUnknown))
buh.Errors = append(buh.Errors, v2.ErrorCodeBlobUploadUnknown)
return
}
@ -146,7 +146,7 @@ func (buh *blobUploadHandler) GetUploadStatus(w http.ResponseWriter, r *http.Req
// resumable upload is supported. This will enable returning a non-zero
// range for clients to begin uploading at an offset.
if err := buh.blobUploadResponse(w, r, true); err != nil {
buh.Errors = append(buh.Errors, errcode.NewError(errcode.ErrorCodeUnknown, err))
buh.Errors = append(buh.Errors, errcode.ErrorCodeUnknown.WithDetail(err))
return
}
@ -157,13 +157,13 @@ func (buh *blobUploadHandler) GetUploadStatus(w http.ResponseWriter, r *http.Req
// PatchBlobData writes data to an upload.
func (buh *blobUploadHandler) PatchBlobData(w http.ResponseWriter, r *http.Request) {
if buh.Upload == nil {
buh.Errors = append(buh.Errors, errcode.NewError(v2.ErrorCodeBlobUploadUnknown))
buh.Errors = append(buh.Errors, v2.ErrorCodeBlobUploadUnknown)
return
}
ct := r.Header.Get("Content-Type")
if ct != "" && ct != "application/octet-stream" {
buh.Errors = append(buh.Errors, errcode.NewError(errcode.ErrorCodeUnknown, fmt.Errorf("Bad Content-Type")))
buh.Errors = append(buh.Errors, errcode.ErrorCodeUnknown.WithDetail(fmt.Errorf("Bad Content-Type")))
// TODO(dmcgowan): encode error
return
}
@ -173,12 +173,12 @@ func (buh *blobUploadHandler) PatchBlobData(w http.ResponseWriter, r *http.Reque
// Copy the data
if _, err := io.Copy(buh.Upload, r.Body); err != nil {
ctxu.GetLogger(buh).Errorf("unknown error copying into upload: %v", err)
buh.Errors = append(buh.Errors, errcode.NewError(errcode.ErrorCodeUnknown, err))
buh.Errors = append(buh.Errors, errcode.ErrorCodeUnknown.WithDetail(err))
return
}
if err := buh.blobUploadResponse(w, r, false); err != nil {
buh.Errors = append(buh.Errors, errcode.NewError(errcode.ErrorCodeUnknown, err))
buh.Errors = append(buh.Errors, errcode.ErrorCodeUnknown.WithDetail(err))
return
}
@ -192,7 +192,7 @@ func (buh *blobUploadHandler) PatchBlobData(w http.ResponseWriter, r *http.Reque
// url of the blob.
func (buh *blobUploadHandler) PutBlobUploadComplete(w http.ResponseWriter, r *http.Request) {
if buh.Upload == nil {
buh.Errors = append(buh.Errors, errcode.NewError(v2.ErrorCodeBlobUploadUnknown))
buh.Errors = append(buh.Errors, v2.ErrorCodeBlobUploadUnknown)
return
}
@ -200,21 +200,21 @@ func (buh *blobUploadHandler) PutBlobUploadComplete(w http.ResponseWriter, r *ht
if dgstStr == "" {
// no digest? return error, but allow retry.
buh.Errors = append(buh.Errors, errcode.NewError(v2.ErrorCodeDigestInvalid, "digest missing"))
buh.Errors = append(buh.Errors, v2.ErrorCodeDigestInvalid.WithDetail("digest missing"))
return
}
dgst, err := digest.ParseDigest(dgstStr)
if err != nil {
// no digest? return error, but allow retry.
buh.Errors = append(buh.Errors, errcode.NewError(v2.ErrorCodeDigestInvalid, "digest parsing failed"))
buh.Errors = append(buh.Errors, v2.ErrorCodeDigestInvalid.WithDetail("digest parsing failed"))
return
}
// Read in the data, if any.
if _, err := io.Copy(buh.Upload, r.Body); err != nil {
ctxu.GetLogger(buh).Errorf("unknown error copying into upload: %v", err)
buh.Errors = append(buh.Errors, errcode.NewError(errcode.ErrorCodeUnknown, err))
buh.Errors = append(buh.Errors, errcode.ErrorCodeUnknown.WithDetail(err))
return
}
@ -229,14 +229,14 @@ func (buh *blobUploadHandler) PutBlobUploadComplete(w http.ResponseWriter, r *ht
if err != nil {
switch err := err.(type) {
case distribution.ErrBlobInvalidDigest:
buh.Errors = append(buh.Errors, errcode.NewError(v2.ErrorCodeDigestInvalid, err))
buh.Errors = append(buh.Errors, v2.ErrorCodeDigestInvalid.WithDetail(err))
default:
switch err {
case distribution.ErrBlobInvalidLength, distribution.ErrBlobDigestUnsupported:
buh.Errors = append(buh.Errors, errcode.NewError(v2.ErrorCodeBlobUploadInvalid, err))
buh.Errors = append(buh.Errors, v2.ErrorCodeBlobUploadInvalid.WithDetail(err))
default:
ctxu.GetLogger(buh).Errorf("unknown error completing upload: %#v", err)
buh.Errors = append(buh.Errors, errcode.NewError(errcode.ErrorCodeUnknown, err))
buh.Errors = append(buh.Errors, errcode.ErrorCodeUnknown.WithDetail(err))
}
}
@ -253,7 +253,7 @@ func (buh *blobUploadHandler) PutBlobUploadComplete(w http.ResponseWriter, r *ht
// Build our canonical blob url
blobURL, err := buh.urlBuilder.BuildBlobURL(buh.Repository.Name(), desc.Digest)
if err != nil {
buh.Errors = append(buh.Errors, errcode.NewError(errcode.ErrorCodeUnknown, err))
buh.Errors = append(buh.Errors, errcode.ErrorCodeUnknown.WithDetail(err))
return
}
@ -266,14 +266,14 @@ func (buh *blobUploadHandler) PutBlobUploadComplete(w http.ResponseWriter, r *ht
// CancelBlobUpload cancels an in-progress upload of a blob.
func (buh *blobUploadHandler) CancelBlobUpload(w http.ResponseWriter, r *http.Request) {
if buh.Upload == nil {
buh.Errors = append(buh.Errors, errcode.NewError(v2.ErrorCodeBlobUploadUnknown))
buh.Errors = append(buh.Errors, v2.ErrorCodeBlobUploadUnknown)
return
}
w.Header().Set("Docker-Upload-UUID", buh.UUID)
if err := buh.Upload.Cancel(buh); err != nil {
ctxu.GetLogger(buh).Errorf("error encountered canceling upload: %v", err)
buh.Errors = append(buh.Errors, errcode.NewError(errcode.ErrorCodeUnknown, err))
buh.Errors = append(buh.Errors, errcode.ErrorCodeUnknown.WithDetail(err))
}
w.WriteHeader(http.StatusNoContent)

11
docs/handlers/helpers.go
View File

@ -16,9 +16,14 @@ func serveJSON(w http.ResponseWriter, v interface{}) error {
sc := http.StatusInternalServerError
if errs, ok := v.(errcode.Errors); ok && len(errs) > 0 {
sc = errs[0].Code.Descriptor().HTTPStatusCode
if sc == 0 {
sc = http.StatusInternalServerError
if err, ok := errs[0].(errcode.ErrorCoder); ok {
if sc2 := err.ErrorCode().Descriptor().HTTPStatusCode; sc2 != 0 {
sc = sc2
}
}
} else if err, ok := v.(errcode.ErrorCoder); ok {
if sc2 := err.ErrorCode().Descriptor().HTTPStatusCode; sc2 != 0 {
sc = sc2
}
}

26
docs/handlers/images.go
View File

@ -64,7 +64,7 @@ func (imh *imageManifestHandler) GetImageManifest(w http.ResponseWriter, r *http
}
if err != nil {
imh.Errors = append(imh.Errors, errcode.NewError(v2.ErrorCodeManifestUnknown, err))
imh.Errors = append(imh.Errors, v2.ErrorCodeManifestUnknown.WithDetail(err))
return
}
@ -72,7 +72,7 @@ func (imh *imageManifestHandler) GetImageManifest(w http.ResponseWriter, r *http
if imh.Digest == "" {
dgst, err := digestManifest(imh, sm)
if err != nil {
imh.Errors = append(imh.Errors, errcode.NewError(v2.ErrorCodeDigestInvalid, err))
imh.Errors = append(imh.Errors, v2.ErrorCodeDigestInvalid.WithDetail(err))
return
}
@ -93,13 +93,13 @@ func (imh *imageManifestHandler) PutImageManifest(w http.ResponseWriter, r *http
var manifest manifest.SignedManifest
if err := dec.Decode(&manifest); err != nil {
imh.Errors = append(imh.Errors, errcode.NewError(v2.ErrorCodeManifestInvalid, err))
imh.Errors = append(imh.Errors, v2.ErrorCodeManifestInvalid.WithDetail(err))
return
}
dgst, err := digestManifest(imh, &manifest)
if err != nil {
imh.Errors = append(imh.Errors, errcode.NewError(v2.ErrorCodeDigestInvalid, err))
imh.Errors = append(imh.Errors, v2.ErrorCodeDigestInvalid.WithDetail(err))
return
}
@ -107,7 +107,7 @@ func (imh *imageManifestHandler) PutImageManifest(w http.ResponseWriter, r *http
if imh.Tag != "" {
if manifest.Tag != imh.Tag {
ctxu.GetLogger(imh).Errorf("invalid tag on manifest payload: %q != %q", manifest.Tag, imh.Tag)
imh.Errors = append(imh.Errors, errcode.NewError(v2.ErrorCodeTagInvalid))
imh.Errors = append(imh.Errors, v2.ErrorCodeTagInvalid)
return
}
@ -115,11 +115,11 @@ func (imh *imageManifestHandler) PutImageManifest(w http.ResponseWriter, r *http
} else if imh.Digest != "" {
if dgst != imh.Digest {
ctxu.GetLogger(imh).Errorf("payload digest does match: %q != %q", dgst, imh.Digest)
imh.Errors = append(imh.Errors, errcode.NewError(v2.ErrorCodeDigestInvalid))
imh.Errors = append(imh.Errors, v2.ErrorCodeDigestInvalid)
return
}
} else {
imh.Errors = append(imh.Errors, errcode.NewError(v2.ErrorCodeTagInvalid, "no tag or digest specified"))
imh.Errors = append(imh.Errors, v2.ErrorCodeTagInvalid.WithDetail("no tag or digest specified"))
return
}
@ -131,19 +131,19 @@ func (imh *imageManifestHandler) PutImageManifest(w http.ResponseWriter, r *http
for _, verificationError := range err {
switch verificationError := verificationError.(type) {
case distribution.ErrManifestBlobUnknown:
imh.Errors = append(imh.Errors, errcode.NewError(v2.ErrorCodeBlobUnknown, verificationError.Digest))
imh.Errors = append(imh.Errors, v2.ErrorCodeBlobUnknown.WithDetail(verificationError.Digest))
case distribution.ErrManifestUnverified:
imh.Errors = append(imh.Errors, errcode.NewError(v2.ErrorCodeManifestUnverified))
imh.Errors = append(imh.Errors, v2.ErrorCodeManifestUnverified)
default:
if verificationError == digest.ErrDigestInvalidFormat {
imh.Errors = append(imh.Errors, errcode.NewError(v2.ErrorCodeDigestInvalid))
imh.Errors = append(imh.Errors, v2.ErrorCodeDigestInvalid)
} else {
imh.Errors = append(imh.Errors, errcode.NewError(errcode.ErrorCodeUnknown, verificationError))
imh.Errors = append(imh.Errors, errcode.ErrorCodeUnknown, verificationError)
}
}
}
default:
imh.Errors = append(imh.Errors, errcode.NewError(errcode.ErrorCodeUnknown, err))
imh.Errors = append(imh.Errors, errcode.ErrorCodeUnknown.WithDetail(err))
}
return
@ -172,7 +172,7 @@ func (imh *imageManifestHandler) DeleteImageManifest(w http.ResponseWriter, r *h
// tag index entries a serious problem in eventually consistent storage.
// Once we work out schema version 2, the full deletion system will be
// worked out and we can add support back.
imh.Errors = append(imh.Errors, errcode.NewError(v2.ErrorCodeUnsupported))
imh.Errors = append(imh.Errors, v2.ErrorCodeUnsupported)
}
// digestManifest takes a digest of the given manifest. This belongs somewhere

6
docs/handlers/tags.go
View File

@ -40,9 +40,9 @@ func (th *tagsHandler) GetTags(w http.ResponseWriter, r *http.Request) {
if err != nil {
switch err := err.(type) {
case distribution.ErrRepositoryUnknown:
th.Errors = append(th.Errors, errcode.NewError(v2.ErrorCodeNameUnknown, map[string]string{"name": th.Repository.Name()}))
th.Errors = append(th.Errors, v2.ErrorCodeNameUnknown.WithDetail(map[string]string{"name": th.Repository.Name()}))
default:
th.Errors = append(th.Errors, errcode.NewError(errcode.ErrorCodeUnknown, err))
th.Errors = append(th.Errors, errcode.ErrorCodeUnknown.WithDetail(err))
}
return
}
@ -54,7 +54,7 @@ func (th *tagsHandler) GetTags(w http.ResponseWriter, r *http.Request) {
Name: th.Repository.Name(),
Tags: tags,
}); err != nil {
th.Errors = append(th.Errors, errcode.NewError(errcode.ErrorCodeUnknown, err))
th.Errors = append(th.Errors, errcode.ErrorCodeUnknown.WithDetail(err))
return
}
}