272 lines
6.1 KiB
Go
272 lines
6.1 KiB
Go
// Copyright The OpenTelemetry Authors
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// SPDX-License-Identifier: Apache-2.0
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package attribute // import "go.opentelemetry.io/otel/attribute"
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import (
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"encoding/json"
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"fmt"
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"reflect"
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"strconv"
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"go.opentelemetry.io/otel/internal"
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"go.opentelemetry.io/otel/internal/attribute"
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)
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//go:generate stringer -type=Type
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// Type describes the type of the data Value holds.
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type Type int // nolint: revive // redefines builtin Type.
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// Value represents the value part in key-value pairs.
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type Value struct {
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vtype Type
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numeric uint64
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stringly string
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slice interface{}
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}
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const (
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// INVALID is used for a Value with no value set.
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INVALID Type = iota
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// BOOL is a boolean Type Value.
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BOOL
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// INT64 is a 64-bit signed integral Type Value.
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INT64
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// FLOAT64 is a 64-bit floating point Type Value.
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FLOAT64
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// STRING is a string Type Value.
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STRING
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// BOOLSLICE is a slice of booleans Type Value.
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BOOLSLICE
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// INT64SLICE is a slice of 64-bit signed integral numbers Type Value.
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INT64SLICE
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// FLOAT64SLICE is a slice of 64-bit floating point numbers Type Value.
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FLOAT64SLICE
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// STRINGSLICE is a slice of strings Type Value.
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STRINGSLICE
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)
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// BoolValue creates a BOOL Value.
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func BoolValue(v bool) Value {
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return Value{
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vtype: BOOL,
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numeric: internal.BoolToRaw(v),
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}
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}
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// BoolSliceValue creates a BOOLSLICE Value.
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func BoolSliceValue(v []bool) Value {
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return Value{vtype: BOOLSLICE, slice: attribute.BoolSliceValue(v)}
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}
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// IntValue creates an INT64 Value.
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func IntValue(v int) Value {
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return Int64Value(int64(v))
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}
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// IntSliceValue creates an INTSLICE Value.
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func IntSliceValue(v []int) Value {
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var int64Val int64
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cp := reflect.New(reflect.ArrayOf(len(v), reflect.TypeOf(int64Val)))
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for i, val := range v {
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cp.Elem().Index(i).SetInt(int64(val))
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}
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return Value{
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vtype: INT64SLICE,
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slice: cp.Elem().Interface(),
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}
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}
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// Int64Value creates an INT64 Value.
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func Int64Value(v int64) Value {
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return Value{
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vtype: INT64,
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numeric: internal.Int64ToRaw(v),
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}
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}
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// Int64SliceValue creates an INT64SLICE Value.
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func Int64SliceValue(v []int64) Value {
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return Value{vtype: INT64SLICE, slice: attribute.Int64SliceValue(v)}
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}
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// Float64Value creates a FLOAT64 Value.
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func Float64Value(v float64) Value {
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return Value{
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vtype: FLOAT64,
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numeric: internal.Float64ToRaw(v),
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}
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}
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// Float64SliceValue creates a FLOAT64SLICE Value.
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func Float64SliceValue(v []float64) Value {
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return Value{vtype: FLOAT64SLICE, slice: attribute.Float64SliceValue(v)}
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}
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// StringValue creates a STRING Value.
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func StringValue(v string) Value {
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return Value{
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vtype: STRING,
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stringly: v,
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}
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}
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// StringSliceValue creates a STRINGSLICE Value.
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func StringSliceValue(v []string) Value {
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return Value{vtype: STRINGSLICE, slice: attribute.StringSliceValue(v)}
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}
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// Type returns a type of the Value.
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func (v Value) Type() Type {
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return v.vtype
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}
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// AsBool returns the bool value. Make sure that the Value's type is
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// BOOL.
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func (v Value) AsBool() bool {
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return internal.RawToBool(v.numeric)
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}
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// AsBoolSlice returns the []bool value. Make sure that the Value's type is
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// BOOLSLICE.
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func (v Value) AsBoolSlice() []bool {
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if v.vtype != BOOLSLICE {
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return nil
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}
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return v.asBoolSlice()
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}
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func (v Value) asBoolSlice() []bool {
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return attribute.AsBoolSlice(v.slice)
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}
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// AsInt64 returns the int64 value. Make sure that the Value's type is
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// INT64.
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func (v Value) AsInt64() int64 {
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return internal.RawToInt64(v.numeric)
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}
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// AsInt64Slice returns the []int64 value. Make sure that the Value's type is
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// INT64SLICE.
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func (v Value) AsInt64Slice() []int64 {
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if v.vtype != INT64SLICE {
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return nil
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}
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return v.asInt64Slice()
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}
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func (v Value) asInt64Slice() []int64 {
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return attribute.AsInt64Slice(v.slice)
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}
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// AsFloat64 returns the float64 value. Make sure that the Value's
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// type is FLOAT64.
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func (v Value) AsFloat64() float64 {
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return internal.RawToFloat64(v.numeric)
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}
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// AsFloat64Slice returns the []float64 value. Make sure that the Value's type is
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// FLOAT64SLICE.
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func (v Value) AsFloat64Slice() []float64 {
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if v.vtype != FLOAT64SLICE {
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return nil
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}
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return v.asFloat64Slice()
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}
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func (v Value) asFloat64Slice() []float64 {
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return attribute.AsFloat64Slice(v.slice)
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}
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// AsString returns the string value. Make sure that the Value's type
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// is STRING.
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func (v Value) AsString() string {
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return v.stringly
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}
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// AsStringSlice returns the []string value. Make sure that the Value's type is
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// STRINGSLICE.
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func (v Value) AsStringSlice() []string {
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if v.vtype != STRINGSLICE {
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return nil
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}
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return v.asStringSlice()
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}
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func (v Value) asStringSlice() []string {
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return attribute.AsStringSlice(v.slice)
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}
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type unknownValueType struct{}
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// AsInterface returns Value's data as interface{}.
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func (v Value) AsInterface() interface{} {
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switch v.Type() {
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case BOOL:
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return v.AsBool()
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case BOOLSLICE:
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return v.asBoolSlice()
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case INT64:
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return v.AsInt64()
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case INT64SLICE:
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return v.asInt64Slice()
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case FLOAT64:
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return v.AsFloat64()
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case FLOAT64SLICE:
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return v.asFloat64Slice()
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case STRING:
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return v.stringly
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case STRINGSLICE:
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return v.asStringSlice()
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}
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return unknownValueType{}
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}
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// Emit returns a string representation of Value's data.
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func (v Value) Emit() string {
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switch v.Type() {
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case BOOLSLICE:
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return fmt.Sprint(v.asBoolSlice())
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case BOOL:
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return strconv.FormatBool(v.AsBool())
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case INT64SLICE:
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j, err := json.Marshal(v.asInt64Slice())
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if err != nil {
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return fmt.Sprintf("invalid: %v", v.asInt64Slice())
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}
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return string(j)
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case INT64:
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return strconv.FormatInt(v.AsInt64(), 10)
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case FLOAT64SLICE:
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j, err := json.Marshal(v.asFloat64Slice())
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if err != nil {
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return fmt.Sprintf("invalid: %v", v.asFloat64Slice())
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}
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return string(j)
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case FLOAT64:
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return fmt.Sprint(v.AsFloat64())
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case STRINGSLICE:
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j, err := json.Marshal(v.asStringSlice())
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if err != nil {
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return fmt.Sprintf("invalid: %v", v.asStringSlice())
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}
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return string(j)
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case STRING:
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return v.stringly
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default:
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return "unknown"
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}
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}
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// MarshalJSON returns the JSON encoding of the Value.
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func (v Value) MarshalJSON() ([]byte, error) {
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var jsonVal struct {
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Type string
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Value interface{}
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}
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jsonVal.Type = v.Type().String()
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jsonVal.Value = v.AsInterface()
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return json.Marshal(jsonVal)
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}
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