mirror of
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117 lines
2.9 KiB
Go
117 lines
2.9 KiB
Go
// Copyright The OpenTelemetry Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package codes // import "go.opentelemetry.io/otel/codes"
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import (
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"encoding/json"
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"fmt"
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"strconv"
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)
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const (
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// Unset is the default status code.
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Unset Code = 0
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// Error indicates the operation contains an error.
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//
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// NOTE: The error code in OTLP is 2.
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// The value of this enum is only relevant to the internals
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// of the Go SDK.
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Error Code = 1
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// Ok indicates operation has been validated by an Application developers
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// or Operator to have completed successfully, or contain no error.
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//
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// NOTE: The Ok code in OTLP is 1.
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// The value of this enum is only relevant to the internals
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// of the Go SDK.
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Ok Code = 2
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maxCode = 3
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)
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// Code is an 32-bit representation of a status state.
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type Code uint32
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var codeToStr = map[Code]string{
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Unset: "Unset",
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Error: "Error",
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Ok: "Ok",
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}
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var strToCode = map[string]Code{
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`"Unset"`: Unset,
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`"Error"`: Error,
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`"Ok"`: Ok,
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}
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// String returns the Code as a string.
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func (c Code) String() string {
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return codeToStr[c]
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}
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// UnmarshalJSON unmarshals b into the Code.
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//
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// This is based on the functionality in the gRPC codes package:
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// https://github.com/grpc/grpc-go/blob/bb64fee312b46ebee26be43364a7a966033521b1/codes/codes.go#L218-L244
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func (c *Code) UnmarshalJSON(b []byte) error {
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// From json.Unmarshaler: By convention, to approximate the behavior of
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// Unmarshal itself, Unmarshalers implement UnmarshalJSON([]byte("null")) as
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// a no-op.
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if string(b) == "null" {
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return nil
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}
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if c == nil {
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return fmt.Errorf("nil receiver passed to UnmarshalJSON")
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}
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var x interface{}
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if err := json.Unmarshal(b, &x); err != nil {
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return err
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}
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switch x.(type) {
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case string:
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if jc, ok := strToCode[string(b)]; ok {
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*c = jc
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return nil
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}
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return fmt.Errorf("invalid code: %q", string(b))
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case float64:
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if ci, err := strconv.ParseUint(string(b), 10, 32); err == nil {
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if ci >= maxCode {
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return fmt.Errorf("invalid code: %q", ci)
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}
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*c = Code(ci)
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return nil
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}
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return fmt.Errorf("invalid code: %q", string(b))
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default:
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return fmt.Errorf("invalid code: %q", string(b))
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}
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}
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// MarshalJSON returns c as the JSON encoding of c.
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func (c *Code) MarshalJSON() ([]byte, error) {
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if c == nil {
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return []byte("null"), nil
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}
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str, ok := codeToStr[*c]
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if !ok {
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return nil, fmt.Errorf("invalid code: %d", *c)
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}
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return []byte(fmt.Sprintf("%q", str)), nil
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}
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