File: plugin_go18.go

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// +build go1.8,!windows,amd64,!static_build,!gccgo

/*
   Copyright The containerd Authors.

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
*/

package plugin

import (
	"fmt"
	"path/filepath"
	"plugin"
	"runtime"
)

// loadPlugins loads all plugins for the OS and Arch
// that containerd is built for inside the provided path
func loadPlugins(path string) error {
	abs, err := filepath.Abs(path)
	if err != nil {
		return err
	}
	pattern := filepath.Join(abs, fmt.Sprintf(
		"*-%s-%s.%s",
		runtime.GOOS,
		runtime.GOARCH,
		getLibExt(),
	))
	libs, err := filepath.Glob(pattern)
	if err != nil {
		return err
	}
	for _, lib := range libs {
		if _, err := plugin.Open(lib); err != nil {
			return err
		}
	}
	return nil
}

// getLibExt returns a platform specific lib extension for
// the platform that containerd is running on
func getLibExt() string {
	switch runtime.GOOS {
	case "windows":
		return "dll"
	default:
		return "so"
	}
}