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gitea/vendor/go.opentelemetry.io/otel/label/kv.go

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// Copyright The OpenTelemetry 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 label // import "go.opentelemetry.io/otel/label"
import (
"encoding/json"
"fmt"
"reflect"
)
// KeyValue holds a key and value pair.
type KeyValue struct {
Key Key
Value Value
}
// Bool creates a new key-value pair with a passed name and a bool
// value.
func Bool(k string, v bool) KeyValue {
return Key(k).Bool(v)
}
// Int64 creates a new key-value pair with a passed name and an int64
// value.
func Int64(k string, v int64) KeyValue {
return Key(k).Int64(v)
}
// Uint64 creates a new key-value pair with a passed name and a uint64
// value.
func Uint64(k string, v uint64) KeyValue {
return Key(k).Uint64(v)
}
// Float64 creates a new key-value pair with a passed name and a float64
// value.
func Float64(k string, v float64) KeyValue {
return Key(k).Float64(v)
}
// Int32 creates a new key-value pair with a passed name and an int32
// value.
func Int32(k string, v int32) KeyValue {
return Key(k).Int32(v)
}
// Uint32 creates a new key-value pair with a passed name and a uint32
// value.
func Uint32(k string, v uint32) KeyValue {
return Key(k).Uint32(v)
}
// Float32 creates a new key-value pair with a passed name and a float32
// value.
func Float32(k string, v float32) KeyValue {
return Key(k).Float32(v)
}
// String creates a new key-value pair with a passed name and a string
// value.
func String(k, v string) KeyValue {
return Key(k).String(v)
}
// Stringer creates a new key-value pair with a passed name and a string
// value generated by the passed Stringer interface.
func Stringer(k string, v fmt.Stringer) KeyValue {
return Key(k).String(v.String())
}
// Int creates a new key-value pair instance with a passed name and
// either an int32 or an int64 value, depending on whether the int
// type is 32 or 64 bits wide.
func Int(k string, v int) KeyValue {
return Key(k).Int(v)
}
// Uint creates a new key-value pair instance with a passed name and
// either an uint32 or an uint64 value, depending on whether the uint
// type is 32 or 64 bits wide.
func Uint(k string, v uint) KeyValue {
return Key(k).Uint(v)
}
// Array creates a new key-value pair with a passed name and a array.
// Only arrays of primitive type are supported.
func Array(k string, v interface{}) KeyValue {
return Key(k).Array(v)
}
// Any creates a new key-value pair instance with a passed name and
// automatic type inference. This is slower, and not type-safe.
func Any(k string, value interface{}) KeyValue {
if value == nil {
return String(k, "<nil>")
}
if stringer, ok := value.(fmt.Stringer); ok {
return String(k, stringer.String())
}
rv := reflect.ValueOf(value)
switch rv.Kind() {
case reflect.Array, reflect.Slice:
return Array(k, value)
case reflect.Bool:
return Bool(k, rv.Bool())
case reflect.Int, reflect.Int8, reflect.Int16:
return Int(k, int(rv.Int()))
case reflect.Int32:
return Int32(k, int32(rv.Int()))
case reflect.Int64:
return Int64(k, int64(rv.Int()))
case reflect.Uint, reflect.Uint8, reflect.Uint16:
return Uint(k, uint(rv.Uint()))
case reflect.Uint32:
return Uint32(k, uint32(rv.Uint()))
case reflect.Uint64, reflect.Uintptr:
return Uint64(k, rv.Uint())
case reflect.Float32:
return Float32(k, float32(rv.Float()))
case reflect.Float64:
return Float64(k, rv.Float())
case reflect.String:
return String(k, rv.String())
}
if b, err := json.Marshal(value); b != nil && err == nil {
return String(k, string(b))
}
return String(k, fmt.Sprint(value))
}