test crosscompile feature with goloader

README.md

@@ -1,5 +1,11 @@
 This branch uses unofficial goloader implementation, see https://pkg.go.dev/github.com/eh-steve/goloader, https://github.com/eh-steve/goloader and https://git.aliberksandikci.com.tr/Liderahenk/ahenk-docs/src/branch/main/dev/resources.md#goloader-plugin-logic for more information
 
+
+---
+#### When building for windows:
+- change `.vscode/settings.json` to `"go.buildFlags": ["-tags=windows"],`
+- change `cmd/go-loader-test/plugin-manager.go` to `BuildEnv:        []string{"GOOS=windows"},`
+
 ---
 # Pros
 - Fast, Lightweight

cmd/go-loader-test/plugin-manager.go

@@ -10,9 +10,9 @@ func PluginManager(params ...string) {
 	conf := jit.BuildConfig{
 		KeepTempFiles:   false,                   // Files are copied/written to a temp dir to ensure it is writable. This retains the temporary copies
 		ExtraBuildFlags: []string{"-x"},          // Flags passed to go build command
-		BuildEnv:        []string{"GOOS=windows"}, // Env vars to set for go build toolchain
+		BuildEnv:        []string{"GOOS=darwin"}, // Env vars to set for go build toolchain
 		TmpDir:          "/tmp/inner",            // To control where temporary files are copied
-		DebugLog:        true,                     //
+		DebugLog:        false,                   //
 	}
 
 	loadable, err := jit.BuildGoPackage(conf, "plugins/tmptest/")
@@ -26,12 +26,6 @@ func PluginManager(params ...string) {
 	if err != nil {
 		panic(err)
 	}
-	// defer func() {
-	// 	err = module.Unload()
-	// 	if err != nil {
-	// 		panic(err)
-	// 	}
-	// }()
 	switch f := symbols["MyFunc"].(type) {
 	case func([]byte) (interface{}, error):
 		result, err := f([]byte(`{"k":"v"}`))
@@ -48,4 +42,39 @@ func PluginManager(params ...string) {
 	if err != nil {
 		panic(err)
 	}
+
+	//
+	//
+	//
+	//
+	//
+
+	loadable2, err := jit.BuildGoPackage(conf, "plugins/addsymbol/")
+	if err != nil {
+		panic(err)
+	}
+
+	module2, err := loadable2.Load()
+	// module.SymbolsByPkg is a map[string]map[string]interface{} of all packages and their exported functions and global vars
+	symbols2 := module2.SymbolsByPkg[loadable2.ImportPath]
+	if err != nil {
+		panic(err)
+	}
+	switch f := symbols2["Symbol"].(type) {
+	case func(a, b string) (interface{}, error):
+		result, err := f("a", "b")
+		if err != nil {
+			panic(err)
+		}
+		fmt.Println(result)
+	default:
+		fmt.Println(f)
+		panic("Function signature was not what was expected")
+	}
+
+	err = module2.Unload()
+	if err != nil {
+		panic(err)
+	}
+
 }

cmd/go-loader-test/plugin-opener.go

@@ -1,26 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"os"
-	"plugin"
-
-	"git.aliberksandikci.com.tr/asandikci/go-loader-test/pkg/utils"
-)
-
-func LoadPlugin(plugName string, chn chan interface{}) {
-
-	plug, err := plugin.Open(PluginDir + plugName + ".so")
-	utils.Check(err)
-
-	symPlug, err := plug.Lookup(utils.FirstUpperEN(plugName) + "Connect")
-	utils.Check(err)
-
-	var plugOut interface{}
-	plugOut, ok := symPlug.(interface{})
-	if !ok {
-		fmt.Println("unexpected type from module symbol")
-		os.Exit(1)
-	}
-	chn <- plugOut
-}

plugins/addsymbol/symbol.go

@@ -0,0 +1,5 @@
+package addsymbol
+
+func Symbol(a, b string) (interface{}, error) {
+	return symbol(a, b), nil
+}

plugins/addsymbol/symbol_linux.go

@@ -0,0 +1,7 @@
+// go:build linux && !windows
+
+package addsymbol
+
+func symbol(a, b string) string {
+	return a + "+" + b + "=linux"
+}

plugins/addsymbol/symbol_windows.go

@@ -0,0 +1,7 @@
+// go:build windows
+
+package addsymbol
+
+func symbol(a, b string) string {
+	return a + "-" + b + "=windows"
+}

plugins/tmptest/info.go

@@ -1,11 +1,11 @@
 package mypackage
 
-func Info() map[string]interface{} {
+// func Info() map[string]interface{} {
-	return map[string]interface{}{
+// 	return map[string]interface{}{
-		"name":        "tmptest",
+// 		"name":        "tmptest",
-		"version":     "1.0.2",
+// 		"version":     "1.0.2",
-		"support":     "any",
+// 		"support":     "any",
-		"description": "Temporary testing",
+// 		"description": "Temporary testing",
-		"developer":   "asandikci@aliberksandikci.com.tr",
+// 		"developer":   "asandikci@aliberksandikci.com.tr",
-	}
+// 	}
-}
+// }