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main.go
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main.go
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package main
import (
"fmt"
"github.com/mburbidg/goplug/ops"
"log"
"os"
"path/filepath"
"plugin"
)
func main() {
exePath, err := os.Executable()
if err != nil {
log.Fatalf("Error: getting working directory: err=%s\n", err)
}
opList, err := loadPlugins(filepath.Dir(exePath) + "/plugins")
if err != nil {
log.Fatalf("Error: loading plugins: err=%s\n", err)
}
for name, op := range opList {
log.Printf("%s=%s\n", name, op())
}
}
func loadPlugins(pluginsDir string) (ops.OpList, error) {
log.Printf("Info: loading plugins: dir=%s", pluginsDir)
entries, err := os.ReadDir(pluginsDir)
if err != nil {
return nil, fmt.Errorf("reading plugin directory: err=%s\n", err)
}
opList := ops.OpList{}
for _, entry := range entries {
err := loadPlugin(opList, pluginsDir, entry)
if err != nil {
log.Printf("Warning: loading pluging: name=%s, err=%s\n", entry.Name(), err)
}
}
return opList, nil
}
func loadPlugin(opList ops.OpList, dir string, entry os.DirEntry) error {
log.Printf("Info: loading plugin: name=%s\n", entry.Name())
p, err := plugin.Open(dir + "/" + entry.Name())
if err != nil {
return err
}
list, err := p.Lookup("OperationList")
if err != nil {
return fmt.Errorf("loading plugin: %w", err)
}
for name, op := range *list.(*ops.OpList) {
opList[name] = op
}
return nil
}