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// Copyright 2020 New Relic Corporation. All rights reserved.
// SPDX-License-Identifier: Apache-2.0
package newrelic
import (
"bytes"
"compress/gzip"
"encoding/base64"
"encoding/json"
"fmt"
"io"
"strings"
)
// parseServerlessPayload exists for testing.
func parseServerlessPayload(data []byte) (metadata, uncompressedData map[string]json.RawMessage, err error) {
var arr [4]json.RawMessage
if err = json.Unmarshal(data, &arr); nil != err {
err = fmt.Errorf("unable to unmarshal serverless data array: %v", err)
return
}
var dataJSON []byte
compressed := strings.Trim(string(arr[3]), `"`)
if dataJSON, err = decodeUncompress(compressed); nil != err {
err = fmt.Errorf("unable to uncompress serverless data: %v", err)
return
}
if err = json.Unmarshal(dataJSON, &uncompressedData); nil != err {
err = fmt.Errorf("unable to unmarshal uncompressed serverless data: %v", err)
return
}
if err = json.Unmarshal(arr[2], &metadata); nil != err {
err = fmt.Errorf("unable to unmarshal serverless metadata: %v", err)
return
}
return
}
func decodeUncompress(input string) ([]byte, error) {
decoded, err := base64.StdEncoding.DecodeString(input)
if nil != err {
return nil, err
}
buf := bytes.NewBuffer(decoded)
gz, err := gzip.NewReader(buf)
if nil != err {
return nil, err
}
var out bytes.Buffer
io.Copy(&out, gz)
gz.Close()
return out.Bytes(), nil
}
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