allow xgo auto update via config

cmd/xgo/test-explorer/config.go

@@ -27,7 +27,12 @@ type TestConfig struct {
 	Flags []string `json:"flags"`
 	Args  []string `json:"args"`
 
-	MockRules []string `json:"mock_rules"`
+	MockRules []string   `json:"mock_rules"`
+	Xgo       *XgoConfig `json:"xgo,omitempty"`
+}
+
+type XgoConfig struct {
+	AutoUpdate bool `json:"auto_update"`
 }
 
 func (c *TestConfig) CmdEnv() []string {
@@ -141,10 +146,27 @@ func parseTestConfig(config string) (*TestConfig, error) {
 		}
 		conf.MockRules = list
 	}
+	if e, ok := m["xgo"]; ok {
+		err := copyViaJSON(e, &conf.Xgo)
+		if err != nil {
+			return nil, fmt.Errorf("xgo: %w", err)
+		}
+	}
 
 	return conf, nil
 }
 
+func copyViaJSON(src interface{}, dst interface{}) error {
+	if src == nil {
+		return nil
+	}
+	data, err := json.Marshal(src)
+	if err != nil {
+		return err
+	}
+	return json.Unmarshal(data, dst)
+}
+
 func parseConfigAndMergeOptions(configFile string, opts *Options, configFileRequired bool) (*TestConfig, error) {
 	var data []byte
 	if configFile != "" {

cmd/xgo/test-explorer/main.go

@@ -10,6 +10,7 @@ import (
 	"io/fs"
 	"io/ioutil"
 	"net/http"
+	"os"
 	"path/filepath"
 	"runtime"
 	"sort"
@@ -335,13 +336,15 @@ func handle(opts *Options, args []string) error {
 		}
 		return conf, nil
 	}
-
+	// headless mode
+	conf, err := getTestConfig()
+	if err != nil {
+		return err
+	}
+	if conf.Xgo != nil && conf.Xgo.AutoUpdate && os.Getenv("XGO_AUTO_UPDATE") != "never" {
+		autoUpdateXgo()
+	}
 	if len(args) > 0 && args[0] == "test" {
-		// headless mode
-		conf, err := getTestConfig()
-		if err != nil {
-			return err
-		}
 		root, err := scanTests(projectRoot, subPath, true, conf.Exclude)
 		if err != nil {
 			return err
@@ -430,6 +433,20 @@ func handle(opts *Options, args []string) error {
 	})
 }
 
+func autoUpdateXgo() {
+	// auto update
+	done := make(chan struct{})
+	go func() {
+		cmd.Debug().Run("go", "install", "github.com/xhd2015/xgo/cmd/xgo@latest")
+		close(done)
+	}()
+	// at most wait 2 second
+	select {
+	case <-done:
+	case <-time.After(2 * time.Second):
+	}
+}
+
 func openURL(url string) {
 	openCmd := "open"
 	if runtime.GOOS == "windows" {

cmd/xgo/test-explorer/trace_record.go

@@ -34,10 +34,6 @@ type CallRecord struct {
 	Children   []*CallRecord `json:"children"`
 }
 
-func convertTraceFileToCallRecords() []*CallRecord {
-	return nil
-}
-
 type traceConverter struct {
 }
 

cmd/xgo/version.go

@@ -4,8 +4,8 @@ import "fmt"
 
 // auto updated
 const VERSION = "1.0.47"
-const REVISION = "324b023bc90dfb3c23fa9781cbb8f78e2830912b+1"
-const NUMBER = 303
+const REVISION = "9999158f6ad9a59b8bb21a3f2cd7bef59bec11f7+1"
+const NUMBER = 304
 
 // manually updated
 const CORE_VERSION = "1.0.47"

test.config.json

@@ -7,5 +7,8 @@
         "comment": "override not currently supported",
         "path": "test/xgo_test",
         "go_cmd": "xgo"
+    },
+    "xgo": {
+        "auto_update": false
     }
 }