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// Copyright 2020 New Relic Corporation. All rights reserved.
// SPDX-License-Identifier: Apache-2.0
package cat
import (
"errors"
"strconv"
"strings"
)
// IDHeader represents a decoded cross process ID header (generally encoded as
// a string in the form ACCOUNT#BLOB).
type IDHeader struct {
AccountID int
Blob string
}
var (
errInvalidAccountID = errors.New("invalid account ID")
)
// NewIDHeader parses the given decoded ID header and creates an IDHeader
// representing it.
func NewIDHeader(in []byte) (*IDHeader, error) {
parts := strings.Split(string(in), "#")
if len(parts) != 2 {
return nil, errUnexpectedArraySize{
label: "unexpected number of ID elements",
expected: 2,
actual: len(parts),
}
}
account, err := strconv.Atoi(parts[0])
if err != nil {
return nil, errInvalidAccountID
}
return &IDHeader{
AccountID: account,
Blob: parts[1],
}, nil
}
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