90 lines
2.6 KiB
Go
90 lines
2.6 KiB
Go
// Copyright The OpenTelemetry Authors
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris || zos
|
|
// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris zos
|
|
|
|
package resource // import "go.opentelemetry.io/otel/sdk/resource"
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
|
|
"golang.org/x/sys/unix"
|
|
)
|
|
|
|
type unameProvider func(buf *unix.Utsname) (err error)
|
|
|
|
var defaultUnameProvider unameProvider = unix.Uname
|
|
|
|
var currentUnameProvider = defaultUnameProvider
|
|
|
|
func setDefaultUnameProvider() {
|
|
setUnameProvider(defaultUnameProvider)
|
|
}
|
|
|
|
func setUnameProvider(unameProvider unameProvider) {
|
|
currentUnameProvider = unameProvider
|
|
}
|
|
|
|
// platformOSDescription returns a human readable OS version information string.
|
|
// The final string combines OS release information (where available) and the
|
|
// result of the `uname` system call.
|
|
func platformOSDescription() (string, error) {
|
|
uname, err := uname()
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
osRelease := osRelease()
|
|
if osRelease != "" {
|
|
return fmt.Sprintf("%s (%s)", osRelease, uname), nil
|
|
}
|
|
|
|
return uname, nil
|
|
}
|
|
|
|
// uname issues a uname(2) system call (or equivalent on systems which doesn't
|
|
// have one) and formats the output in a single string, similar to the output
|
|
// of the `uname` commandline program. The final string resembles the one
|
|
// obtained with a call to `uname -snrvm`.
|
|
func uname() (string, error) {
|
|
var utsName unix.Utsname
|
|
|
|
err := currentUnameProvider(&utsName)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
return fmt.Sprintf("%s %s %s %s %s",
|
|
unix.ByteSliceToString(utsName.Sysname[:]),
|
|
unix.ByteSliceToString(utsName.Nodename[:]),
|
|
unix.ByteSliceToString(utsName.Release[:]),
|
|
unix.ByteSliceToString(utsName.Version[:]),
|
|
unix.ByteSliceToString(utsName.Machine[:]),
|
|
), nil
|
|
}
|
|
|
|
// getFirstAvailableFile returns an *os.File of the first available
|
|
// file from a list of candidate file paths.
|
|
func getFirstAvailableFile(candidates []string) (*os.File, error) {
|
|
for _, c := range candidates {
|
|
file, err := os.Open(c)
|
|
if err == nil {
|
|
return file, nil
|
|
}
|
|
}
|
|
|
|
return nil, fmt.Errorf("no candidate file available: %v", candidates)
|
|
}
|