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// Copyright 2020 New Relic Corporation. All rights reserved.
// SPDX-License-Identifier: Apache-2.0
package internal
import (
"encoding/json"
"reflect"
"runtime"
)
// Environment describes the application's environment.
type Environment struct {
Compiler string `env:"runtime.Compiler"`
GOARCH string `env:"runtime.GOARCH"`
GOOS string `env:"runtime.GOOS"`
Version string `env:"runtime.Version"`
NumCPU int `env:"runtime.NumCPU"`
}
var (
// SampleEnvironment is useful for testing.
SampleEnvironment = Environment{
Compiler: "comp",
GOARCH: "arch",
GOOS: "goos",
Version: "vers",
NumCPU: 8,
}
)
// NewEnvironment returns a new Environment.
func NewEnvironment() Environment {
return Environment{
Compiler: runtime.Compiler,
GOARCH: runtime.GOARCH,
GOOS: runtime.GOOS,
Version: runtime.Version(),
NumCPU: runtime.NumCPU(),
}
}
// MarshalJSON prepares Environment JSON in the format expected by the collector
// during the connect command.
func (e Environment) MarshalJSON() ([]byte, error) {
var arr [][]interface{}
val := reflect.ValueOf(e)
numFields := val.NumField()
arr = make([][]interface{}, numFields)
for i := 0; i < numFields; i++ {
v := val.Field(i)
t := val.Type().Field(i).Tag.Get("env")
arr[i] = []interface{}{
t,
v.Interface(),
}
}
return json.Marshal(arr)
}
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