cloudflared-mirror/vendor/github.com/getsentry/sentry-go/util.go

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package sentry
import (
"crypto/rand"
"encoding/hex"
"encoding/json"
"fmt"
"os"
"strings"
"time"
exec "golang.org/x/sys/execabs"
)
func uuid() string {
id := make([]byte, 16)
// Prefer rand.Read over rand.Reader, see https://go-review.googlesource.com/c/go/+/272326/.
_, _ = rand.Read(id)
id[6] &= 0x0F // clear version
id[6] |= 0x40 // set version to 4 (random uuid)
id[8] &= 0x3F // clear variant
id[8] |= 0x80 // set to IETF variant
return hex.EncodeToString(id)
}
func fileExists(fileName string) bool {
_, err := os.Stat(fileName)
return err == nil
}
// monotonicTimeSince replaces uses of time.Now() to take into account the
// monotonic clock reading stored in start, such that duration = end - start is
// unaffected by changes in the system wall clock.
func monotonicTimeSince(start time.Time) (end time.Time) {
return start.Add(time.Since(start))
}
// nolint: deadcode, unused
func prettyPrint(data interface{}) {
dbg, _ := json.MarshalIndent(data, "", " ")
fmt.Println(string(dbg))
}
// defaultRelease attempts to guess a default release for the currently running
// program.
func defaultRelease() (release string) {
// Return first non-empty environment variable known to hold release info, if any.
envs := []string{
"SENTRY_RELEASE",
"HEROKU_SLUG_COMMIT",
"SOURCE_VERSION",
"CODEBUILD_RESOLVED_SOURCE_VERSION",
"CIRCLE_SHA1",
"GAE_DEPLOYMENT_ID",
"GITHUB_SHA", // GitHub Actions - https://help.github.com/en/actions
"COMMIT_REF", // Netlify - https://docs.netlify.com/
"VERCEL_GIT_COMMIT_SHA", // Vercel - https://vercel.com/
"ZEIT_GITHUB_COMMIT_SHA", // Zeit (now known as Vercel)
"ZEIT_GITLAB_COMMIT_SHA",
"ZEIT_BITBUCKET_COMMIT_SHA",
}
for _, e := range envs {
if release = os.Getenv(e); release != "" {
Logger.Printf("Using release from environment variable %s: %s", e, release)
return release
}
}
// Derive a version string from Git. Example outputs:
// v1.0.1-0-g9de4
// v2.0-8-g77df-dirty
// 4f72d7
cmd := exec.Command("git", "describe", "--long", "--always", "--dirty")
b, err := cmd.Output()
if err != nil {
// Either Git is not available or the current directory is not a
// Git repository.
var s strings.Builder
fmt.Fprintf(&s, "Release detection failed: %v", err)
if err, ok := err.(*exec.ExitError); ok && len(err.Stderr) > 0 {
fmt.Fprintf(&s, ": %s", err.Stderr)
}
Logger.Print(s.String())
Logger.Print("Some Sentry features will not be available. See https://docs.sentry.io/product/releases/.")
Logger.Print("To stop seeing this message, pass a Release to sentry.Init or set the SENTRY_RELEASE environment variable.")
return ""
}
release = strings.TrimSpace(string(b))
Logger.Printf("Using release from Git: %s", release)
return release
}