feat(goctl): go work multi-module support (#1800)

* feat(goctl): go work multi-module support

Resolve: #1793

* chore: print log when getting project ctx fails

tools/goctl/util/ctx/gomod.go

@@ -1,11 +1,14 @@
 package ctx
 
 import (
+	"encoding/json"
 	"errors"
+	"fmt"
+	"io"
 	"os"
 	"path/filepath"
+	"strings"
 
-	"github.com/zeromicro/go-zero/core/jsonx"
 	"github.com/zeromicro/go-zero/tools/goctl/rpc/execx"
 	"github.com/zeromicro/go-zero/tools/goctl/util/pathx"
 )
@@ -36,16 +39,11 @@ func projectFromGoMod(workDir string) (*ProjectContext, error) {
 		return nil, err
 	}
 
-	data, err := execx.Run("go list -json -m", workDir)
+	m, err := getRealModule(workDir, execx.Run)
 	if err != nil {
 		return nil, err
 	}
 
-	var m Module
-	err = jsonx.Unmarshal([]byte(data), &m)
-	if err != nil {
-		return nil, err
-	}
 	var ret ProjectContext
 	ret.WorkDir = workDir
 	ret.Name = filepath.Base(m.Dir)
@@ -58,3 +56,34 @@ func projectFromGoMod(workDir string) (*ProjectContext, error) {
 	ret.Path = m.Path
 	return &ret, nil
 }
+
+func getRealModule(workDir string, execRun execx.RunFunc) (*Module, error) {
+	data, err := execRun("go list -json -m", workDir)
+	if err != nil {
+		return nil, err
+	}
+	modules, err := decodePackages(strings.NewReader(data))
+	if err != nil {
+		return nil, err
+	}
+	for _, m := range modules {
+		if strings.HasPrefix(workDir, m.Dir) {
+			return &m, nil
+		}
+	}
+	return nil, errors.New("no matched module")
+}
+
+func decodePackages(rc io.Reader) ([]Module, error) {
+	var modules []Module
+	decoder := json.NewDecoder(rc)
+	for decoder.More() {
+		var m Module
+		if err := decoder.Decode(&m); err != nil {
+			return nil, fmt.Errorf("invalid module: %v", err)
+		}
+		modules = append(modules, m)
+	}
+
+	return modules, nil
+}