45 lines
1.2 KiB
Go
45 lines
1.2 KiB
Go
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// Copyright 2019 The OpenZipkin 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 model
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import (
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"fmt"
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"strconv"
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)
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// ID type
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type ID uint64
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// String outputs the 64-bit ID as hex string.
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func (i ID) String() string {
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return fmt.Sprintf("%016x", uint64(i))
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}
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// MarshalJSON serializes an ID type (SpanID, ParentSpanID) to HEX.
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func (i ID) MarshalJSON() ([]byte, error) {
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return []byte(fmt.Sprintf("%q", i.String())), nil
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}
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// UnmarshalJSON deserializes an ID type (SpanID, ParentSpanID) from HEX.
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func (i *ID) UnmarshalJSON(b []byte) (err error) {
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var id uint64
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if len(b) < 3 {
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return nil
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}
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id, err = strconv.ParseUint(string(b[1:len(b)-1]), 16, 64)
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*i = ID(id)
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return err
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}
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