feat: Read release info from build info (#704)

Co-authored-by: Matt Robenolt <matt@ydekproductions.com>

util.go

@@ -6,6 +6,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"os"
+	"runtime/debug"
 	"strings"
 	"time"
 
@@ -66,6 +67,13 @@ func defaultRelease() (release string) {
 		}
 	}
 
+	if info, ok := debug.ReadBuildInfo(); ok {
+		buildInfoVcsRevision := revisionFromBuildInfo(info)
+		if len(buildInfoVcsRevision) > 0 {
+			return buildInfoVcsRevision
+		}
+	}
+
 	// Derive a version string from Git. Example outputs:
 	// 	v1.0.1-0-g9de4
 	// 	v2.0-8-g77df-dirty
@@ -89,3 +97,14 @@ func defaultRelease() (release string) {
 	Logger.Printf("Using release from Git: %s", release)
 	return release
 }
+
+func revisionFromBuildInfo(info *debug.BuildInfo) string {
+	for _, setting := range info.Settings {
+		if setting.Key == "vcs.revision" && setting.Value != "" {
+			Logger.Printf("Using release from debug info: %s", setting.Value)
+			return setting.Value
+		}
+	}
+
+	return ""
+}

util_test.go

@@ -1,6 +1,7 @@
 package sentry
 
 import (
+	"runtime/debug"
 	"testing"
 )
 
@@ -27,3 +28,66 @@ func TestFileExistsReturnsFalseForNonExistingFiles(t *testing.T) {
 	assertEqual(t, fileExists(("util_nope.go")), false)
 	assertEqual(t, fileExists(("util_nope_test.go")), false)
 }
+
+func TestDefaultReleaseSentryReleaseEnvvar(t *testing.T) {
+	releaseVersion := "1.2.3"
+	t.Setenv("SENTRY_RELEASE", releaseVersion)
+
+	assertEqual(t, defaultRelease(), releaseVersion)
+}
+
+func TestDefaultReleaseSentryReleaseEnvvarPrecedence(t *testing.T) {
+	releaseVersion := "1.2.3"
+	t.Setenv("SOURCE_VERSION", "3.2.1")
+	t.Setenv("SENTRY_RELEASE", releaseVersion)
+
+	assertEqual(t, defaultRelease(), releaseVersion)
+}
+
+func TestRevisionFromBuildInfo(t *testing.T) {
+	releaseVersion := "deadbeef"
+
+	info := &debug.BuildInfo{
+		Main: debug.Module{
+			Path:    "my/module",
+			Version: "(devel)",
+		},
+		Deps: []*debug.Module{
+			{
+				Path:    "github.com/getsentry/sentry-go",
+				Version: "v0.23.1",
+				Replace: &debug.Module{
+					Path: "pkg/sentry",
+				},
+			},
+		},
+		Settings: []debug.BuildSetting{
+			{
+				Key:   "vcs.revision",
+				Value: releaseVersion,
+			},
+		},
+	}
+
+	assertEqual(t, revisionFromBuildInfo(info), releaseVersion)
+}
+
+func TestRevisionFromBuildInfoNoVcsInformation(t *testing.T) {
+	info := &debug.BuildInfo{
+		Main: debug.Module{
+			Path:    "my/module",
+			Version: "(devel)",
+		},
+		Deps: []*debug.Module{
+			{
+				Path:    "github.com/getsentry/sentry-go",
+				Version: "v0.23.1",
+				Replace: &debug.Module{
+					Path: "pkg/sentry",
+				},
+			},
+		},
+	}
+
+	assertEqual(t, revisionFromBuildInfo(info), "")
+}