Add buildEnvironment and debug to buildInfo command

go.mod

@@ -13,6 +13,7 @@ require (
 	github.com/prometheus/common v0.32.1
 	github.com/stretchr/testify v1.7.0
 	go.uber.org/zap v1.20.0
+	golang.org/x/exp v0.0.0-20220104160115-025e73f80486
 	golang.org/x/sys v0.0.0-20211204120058-94396e421777
 	golang.org/x/text v0.3.7
 )

go.sum

@@ -319,6 +319,8 @@ golang.org/x/exp v0.0.0-20191227195350-da58074b4299/go.mod h1:2RIsYlXP63K8oxa1u0
 golang.org/x/exp v0.0.0-20200119233911-0405dc783f0a/go.mod h1:2RIsYlXP63K8oxa1u096TMicItID8zy7Y6sNkU49FU4=
 golang.org/x/exp v0.0.0-20200207192155-f17229e696bd/go.mod h1:J/WKrq2StrnmMY6+EHIKF9dgMWnmCNThgcyBT1FY9mM=
 golang.org/x/exp v0.0.0-20200224162631-6cc2880d07d6/go.mod h1:3jZMyOhIsHpP37uCMkUooju7aAi5cS1Q23tOzKc+0MU=
+golang.org/x/exp v0.0.0-20220104160115-025e73f80486 h1:gpEOK9kxNqVPOaZayQV2bzetZplXWakHeirk1bXKu2s=
+golang.org/x/exp v0.0.0-20220104160115-025e73f80486/go.mod h1:b9TAUYHmRtqA6klRHApnXMnj+OyLce4yF5cZCUbk2ps=
 golang.org/x/image v0.0.0-20190227222117-0694c2d4d067/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
 golang.org/x/image v0.0.0-20190802002840-cff245a6509b/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=

internal/handlers/handler_test.go

@@ -434,8 +434,10 @@ func TestReadOnlyHandlers(t *testing.T) {
 				"gitVersion", version.Get().Commit,
 				"versionArray", types.MustNewArray(int32(5), int32(0), int32(42), int32(0)),
 				"bits", int32(strconv.IntSize),
+				"debug", version.Get().Debug,
 				"maxBsonObjectSize", int32(bson.MaxDocumentLen),
 				"ok", float64(1),
+				"buildEnvironment", types.MustMakeDocument(),
 			),
 		},
 

internal/handlers/shared/msg_buildinfo.go

@@ -37,8 +37,10 @@ func (h *Handler) MsgBuildInfo(ctx context.Context, msg *wire.OpMsg) (*wire.OpMs
 			"gitVersion", version.Get().Commit,
 			"versionArray", types.MustNewArray(int32(5), int32(0), int32(42), int32(0)),
 			"bits", int32(strconv.IntSize),
+			"debug", version.Get().Debug,
 			"maxBsonObjectSize", int32(bson.MaxDocumentLen),
 			"ok", float64(1),
+			"buildEnvironment", version.Get().BuildEnvironment,
 		)},
 	})
 	if err != nil {

internal/util/version/version.go

@@ -19,6 +19,10 @@ import (
 	"runtime/debug"
 	"strconv"
 	"strings"
+
+	"golang.org/x/exp/slices"
+
+	"github.com/FerretDB/FerretDB/internal/types"
 )
 
 //go:generate ./generate.sh
@@ -32,10 +36,12 @@ var (
 )
 
 type Info struct {
-	Version string
-	Commit  string
-	Branch  string
-	Dirty   bool
+	Version          string
+	Commit           string
+	Branch           string
+	Dirty            bool
+	Debug            bool // testcover or -race
+	BuildEnvironment types.Document
 }
 
 var info *Info
@@ -55,12 +61,22 @@ func init() {
 		return
 	}
 
+	info.BuildEnvironment = types.MustMakeDocument()
 	for _, s := range buildInfo.Settings {
+		info.BuildEnvironment.Set(s.Key, s.Value)
 		switch s.Key {
 		case "vcs.revision":
 			info.Commit = s.Value
 		case "vcs.modified":
 			info.Dirty, _ = strconv.ParseBool(s.Value)
+		case "-race":
+			if raceEnabled, _ := strconv.ParseBool(s.Value); raceEnabled {
+				info.Debug = true
+			}
+		case "-tags":
+			if slices.Contains(strings.Split(s.Value, ","), "testcover") {
+				info.Debug = true
+			}
 		}
 	}
 }