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Stefan Schwarz 2020-12-28 02:22:33 +01:00
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Google Inc.

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Apache License
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vendor/google.golang.org/grpc/codes/code_string.go generated vendored Normal file
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/*
*
* Copyright 2017 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package codes
import "strconv"
func (c Code) String() string {
switch c {
case OK:
return "OK"
case Canceled:
return "Canceled"
case Unknown:
return "Unknown"
case InvalidArgument:
return "InvalidArgument"
case DeadlineExceeded:
return "DeadlineExceeded"
case NotFound:
return "NotFound"
case AlreadyExists:
return "AlreadyExists"
case PermissionDenied:
return "PermissionDenied"
case ResourceExhausted:
return "ResourceExhausted"
case FailedPrecondition:
return "FailedPrecondition"
case Aborted:
return "Aborted"
case OutOfRange:
return "OutOfRange"
case Unimplemented:
return "Unimplemented"
case Internal:
return "Internal"
case Unavailable:
return "Unavailable"
case DataLoss:
return "DataLoss"
case Unauthenticated:
return "Unauthenticated"
default:
return "Code(" + strconv.FormatInt(int64(c), 10) + ")"
}
}

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/*
*
* Copyright 2014 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
// Package codes defines the canonical error codes used by gRPC. It is
// consistent across various languages.
package codes // import "google.golang.org/grpc/codes"
import (
"fmt"
"strconv"
)
// A Code is an unsigned 32-bit error code as defined in the gRPC spec.
type Code uint32
const (
// OK is returned on success.
OK Code = 0
// Canceled indicates the operation was canceled (typically by the caller).
//
// The gRPC framework will generate this error code when cancellation
// is requested.
Canceled Code = 1
// Unknown error. An example of where this error may be returned is
// if a Status value received from another address space belongs to
// an error-space that is not known in this address space. Also
// errors raised by APIs that do not return enough error information
// may be converted to this error.
//
// The gRPC framework will generate this error code in the above two
// mentioned cases.
Unknown Code = 2
// InvalidArgument indicates client specified an invalid argument.
// Note that this differs from FailedPrecondition. It indicates arguments
// that are problematic regardless of the state of the system
// (e.g., a malformed file name).
//
// This error code will not be generated by the gRPC framework.
InvalidArgument Code = 3
// DeadlineExceeded means operation expired before completion.
// For operations that change the state of the system, this error may be
// returned even if the operation has completed successfully. For
// example, a successful response from a server could have been delayed
// long enough for the deadline to expire.
//
// The gRPC framework will generate this error code when the deadline is
// exceeded.
DeadlineExceeded Code = 4
// NotFound means some requested entity (e.g., file or directory) was
// not found.
//
// This error code will not be generated by the gRPC framework.
NotFound Code = 5
// AlreadyExists means an attempt to create an entity failed because one
// already exists.
//
// This error code will not be generated by the gRPC framework.
AlreadyExists Code = 6
// PermissionDenied indicates the caller does not have permission to
// execute the specified operation. It must not be used for rejections
// caused by exhausting some resource (use ResourceExhausted
// instead for those errors). It must not be
// used if the caller cannot be identified (use Unauthenticated
// instead for those errors).
//
// This error code will not be generated by the gRPC core framework,
// but expect authentication middleware to use it.
PermissionDenied Code = 7
// ResourceExhausted indicates some resource has been exhausted, perhaps
// a per-user quota, or perhaps the entire file system is out of space.
//
// This error code will be generated by the gRPC framework in
// out-of-memory and server overload situations, or when a message is
// larger than the configured maximum size.
ResourceExhausted Code = 8
// FailedPrecondition indicates operation was rejected because the
// system is not in a state required for the operation's execution.
// For example, directory to be deleted may be non-empty, an rmdir
// operation is applied to a non-directory, etc.
//
// A litmus test that may help a service implementor in deciding
// between FailedPrecondition, Aborted, and Unavailable:
// (a) Use Unavailable if the client can retry just the failing call.
// (b) Use Aborted if the client should retry at a higher-level
// (e.g., restarting a read-modify-write sequence).
// (c) Use FailedPrecondition if the client should not retry until
// the system state has been explicitly fixed. E.g., if an "rmdir"
// fails because the directory is non-empty, FailedPrecondition
// should be returned since the client should not retry unless
// they have first fixed up the directory by deleting files from it.
// (d) Use FailedPrecondition if the client performs conditional
// REST Get/Update/Delete on a resource and the resource on the
// server does not match the condition. E.g., conflicting
// read-modify-write on the same resource.
//
// This error code will not be generated by the gRPC framework.
FailedPrecondition Code = 9
// Aborted indicates the operation was aborted, typically due to a
// concurrency issue like sequencer check failures, transaction aborts,
// etc.
//
// See litmus test above for deciding between FailedPrecondition,
// Aborted, and Unavailable.
//
// This error code will not be generated by the gRPC framework.
Aborted Code = 10
// OutOfRange means operation was attempted past the valid range.
// E.g., seeking or reading past end of file.
//
// Unlike InvalidArgument, this error indicates a problem that may
// be fixed if the system state changes. For example, a 32-bit file
// system will generate InvalidArgument if asked to read at an
// offset that is not in the range [0,2^32-1], but it will generate
// OutOfRange if asked to read from an offset past the current
// file size.
//
// There is a fair bit of overlap between FailedPrecondition and
// OutOfRange. We recommend using OutOfRange (the more specific
// error) when it applies so that callers who are iterating through
// a space can easily look for an OutOfRange error to detect when
// they are done.
//
// This error code will not be generated by the gRPC framework.
OutOfRange Code = 11
// Unimplemented indicates operation is not implemented or not
// supported/enabled in this service.
//
// This error code will be generated by the gRPC framework. Most
// commonly, you will see this error code when a method implementation
// is missing on the server. It can also be generated for unknown
// compression algorithms or a disagreement as to whether an RPC should
// be streaming.
Unimplemented Code = 12
// Internal errors. Means some invariants expected by underlying
// system has been broken. If you see one of these errors,
// something is very broken.
//
// This error code will be generated by the gRPC framework in several
// internal error conditions.
Internal Code = 13
// Unavailable indicates the service is currently unavailable.
// This is a most likely a transient condition and may be corrected
// by retrying with a backoff. Note that it is not always safe to retry
// non-idempotent operations.
//
// See litmus test above for deciding between FailedPrecondition,
// Aborted, and Unavailable.
//
// This error code will be generated by the gRPC framework during
// abrupt shutdown of a server process or network connection.
Unavailable Code = 14
// DataLoss indicates unrecoverable data loss or corruption.
//
// This error code will not be generated by the gRPC framework.
DataLoss Code = 15
// Unauthenticated indicates the request does not have valid
// authentication credentials for the operation.
//
// The gRPC framework will generate this error code when the
// authentication metadata is invalid or a Credentials callback fails,
// but also expect authentication middleware to generate it.
Unauthenticated Code = 16
_maxCode = 17
)
var strToCode = map[string]Code{
`"OK"`: OK,
`"CANCELLED"`:/* [sic] */ Canceled,
`"UNKNOWN"`: Unknown,
`"INVALID_ARGUMENT"`: InvalidArgument,
`"DEADLINE_EXCEEDED"`: DeadlineExceeded,
`"NOT_FOUND"`: NotFound,
`"ALREADY_EXISTS"`: AlreadyExists,
`"PERMISSION_DENIED"`: PermissionDenied,
`"RESOURCE_EXHAUSTED"`: ResourceExhausted,
`"FAILED_PRECONDITION"`: FailedPrecondition,
`"ABORTED"`: Aborted,
`"OUT_OF_RANGE"`: OutOfRange,
`"UNIMPLEMENTED"`: Unimplemented,
`"INTERNAL"`: Internal,
`"UNAVAILABLE"`: Unavailable,
`"DATA_LOSS"`: DataLoss,
`"UNAUTHENTICATED"`: Unauthenticated,
}
// UnmarshalJSON unmarshals b into the Code.
func (c *Code) UnmarshalJSON(b []byte) error {
// From json.Unmarshaler: By convention, to approximate the behavior of
// Unmarshal itself, Unmarshalers implement UnmarshalJSON([]byte("null")) as
// a no-op.
if string(b) == "null" {
return nil
}
if c == nil {
return fmt.Errorf("nil receiver passed to UnmarshalJSON")
}
if ci, err := strconv.ParseUint(string(b), 10, 32); err == nil {
if ci >= _maxCode {
return fmt.Errorf("invalid code: %q", ci)
}
*c = Code(ci)
return nil
}
if jc, ok := strToCode[string(b)]; ok {
*c = jc
return nil
}
return fmt.Errorf("invalid code: %q", string(b))
}

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/*
*
* Copyright 2020 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
// Package status implements errors returned by gRPC. These errors are
// serialized and transmitted on the wire between server and client, and allow
// for additional data to be transmitted via the Details field in the status
// proto. gRPC service handlers should return an error created by this
// package, and gRPC clients should expect a corresponding error to be
// returned from the RPC call.
//
// This package upholds the invariants that a non-nil error may not
// contain an OK code, and an OK code must result in a nil error.
package status
import (
"errors"
"fmt"
"github.com/golang/protobuf/proto"
"github.com/golang/protobuf/ptypes"
spb "google.golang.org/genproto/googleapis/rpc/status"
"google.golang.org/grpc/codes"
)
// Status represents an RPC status code, message, and details. It is immutable
// and should be created with New, Newf, or FromProto.
type Status struct {
s *spb.Status
}
// New returns a Status representing c and msg.
func New(c codes.Code, msg string) *Status {
return &Status{s: &spb.Status{Code: int32(c), Message: msg}}
}
// Newf returns New(c, fmt.Sprintf(format, a...)).
func Newf(c codes.Code, format string, a ...interface{}) *Status {
return New(c, fmt.Sprintf(format, a...))
}
// FromProto returns a Status representing s.
func FromProto(s *spb.Status) *Status {
return &Status{s: proto.Clone(s).(*spb.Status)}
}
// Err returns an error representing c and msg. If c is OK, returns nil.
func Err(c codes.Code, msg string) error {
return New(c, msg).Err()
}
// Errorf returns Error(c, fmt.Sprintf(format, a...)).
func Errorf(c codes.Code, format string, a ...interface{}) error {
return Err(c, fmt.Sprintf(format, a...))
}
// Code returns the status code contained in s.
func (s *Status) Code() codes.Code {
if s == nil || s.s == nil {
return codes.OK
}
return codes.Code(s.s.Code)
}
// Message returns the message contained in s.
func (s *Status) Message() string {
if s == nil || s.s == nil {
return ""
}
return s.s.Message
}
// Proto returns s's status as an spb.Status proto message.
func (s *Status) Proto() *spb.Status {
if s == nil {
return nil
}
return proto.Clone(s.s).(*spb.Status)
}
// Err returns an immutable error representing s; returns nil if s.Code() is OK.
func (s *Status) Err() error {
if s.Code() == codes.OK {
return nil
}
return &Error{e: s.Proto()}
}
// WithDetails returns a new status with the provided details messages appended to the status.
// If any errors are encountered, it returns nil and the first error encountered.
func (s *Status) WithDetails(details ...proto.Message) (*Status, error) {
if s.Code() == codes.OK {
return nil, errors.New("no error details for status with code OK")
}
// s.Code() != OK implies that s.Proto() != nil.
p := s.Proto()
for _, detail := range details {
any, err := ptypes.MarshalAny(detail)
if err != nil {
return nil, err
}
p.Details = append(p.Details, any)
}
return &Status{s: p}, nil
}
// Details returns a slice of details messages attached to the status.
// If a detail cannot be decoded, the error is returned in place of the detail.
func (s *Status) Details() []interface{} {
if s == nil || s.s == nil {
return nil
}
details := make([]interface{}, 0, len(s.s.Details))
for _, any := range s.s.Details {
detail := &ptypes.DynamicAny{}
if err := ptypes.UnmarshalAny(any, detail); err != nil {
details = append(details, err)
continue
}
details = append(details, detail.Message)
}
return details
}
// Error wraps a pointer of a status proto. It implements error and Status,
// and a nil *Error should never be returned by this package.
type Error struct {
e *spb.Status
}
func (e *Error) Error() string {
return fmt.Sprintf("rpc error: code = %s desc = %s", codes.Code(e.e.GetCode()), e.e.GetMessage())
}
// GRPCStatus returns the Status represented by se.
func (e *Error) GRPCStatus() *Status {
return FromProto(e.e)
}
// Is implements future error.Is functionality.
// A Error is equivalent if the code and message are identical.
func (e *Error) Is(target error) bool {
tse, ok := target.(*Error)
if !ok {
return false
}
return proto.Equal(e.e, tse.e)
}

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/*
*
* Copyright 2017 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
// Package status implements errors returned by gRPC. These errors are
// serialized and transmitted on the wire between server and client, and allow
// for additional data to be transmitted via the Details field in the status
// proto. gRPC service handlers should return an error created by this
// package, and gRPC clients should expect a corresponding error to be
// returned from the RPC call.
//
// This package upholds the invariants that a non-nil error may not
// contain an OK code, and an OK code must result in a nil error.
package status
import (
"context"
"fmt"
spb "google.golang.org/genproto/googleapis/rpc/status"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/internal/status"
)
// Status references google.golang.org/grpc/internal/status. It represents an
// RPC status code, message, and details. It is immutable and should be
// created with New, Newf, or FromProto.
// https://godoc.org/google.golang.org/grpc/internal/status
type Status = status.Status
// New returns a Status representing c and msg.
func New(c codes.Code, msg string) *Status {
return status.New(c, msg)
}
// Newf returns New(c, fmt.Sprintf(format, a...)).
func Newf(c codes.Code, format string, a ...interface{}) *Status {
return New(c, fmt.Sprintf(format, a...))
}
// Error returns an error representing c and msg. If c is OK, returns nil.
func Error(c codes.Code, msg string) error {
return New(c, msg).Err()
}
// Errorf returns Error(c, fmt.Sprintf(format, a...)).
func Errorf(c codes.Code, format string, a ...interface{}) error {
return Error(c, fmt.Sprintf(format, a...))
}
// ErrorProto returns an error representing s. If s.Code is OK, returns nil.
func ErrorProto(s *spb.Status) error {
return FromProto(s).Err()
}
// FromProto returns a Status representing s.
func FromProto(s *spb.Status) *Status {
return status.FromProto(s)
}
// FromError returns a Status representing err if it was produced from this
// package or has a method `GRPCStatus() *Status`. Otherwise, ok is false and a
// Status is returned with codes.Unknown and the original error message.
func FromError(err error) (s *Status, ok bool) {
if err == nil {
return nil, true
}
if se, ok := err.(interface {
GRPCStatus() *Status
}); ok {
return se.GRPCStatus(), true
}
return New(codes.Unknown, err.Error()), false
}
// Convert is a convenience function which removes the need to handle the
// boolean return value from FromError.
func Convert(err error) *Status {
s, _ := FromError(err)
return s
}
// Code returns the Code of the error if it is a Status error, codes.OK if err
// is nil, or codes.Unknown otherwise.
func Code(err error) codes.Code {
// Don't use FromError to avoid allocation of OK status.
if err == nil {
return codes.OK
}
if se, ok := err.(interface {
GRPCStatus() *Status
}); ok {
return se.GRPCStatus().Code()
}
return codes.Unknown
}
// FromContextError converts a context error into a Status. It returns a
// Status with codes.OK if err is nil, or a Status with codes.Unknown if err is
// non-nil and not a context error.
func FromContextError(err error) *Status {
switch err {
case nil:
return nil
case context.DeadlineExceeded:
return New(codes.DeadlineExceeded, err.Error())
case context.Canceled:
return New(codes.Canceled, err.Error())
default:
return New(codes.Unknown, err.Error())
}
}