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driver.go
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driver.go
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// Copyright (c) 2017 VMware, Inc. All Rights Reserved.
//
// 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 filesystem
import (
"syscall"
storage "github.com/vmware/harbor/src/adminserver/systeminfo/imagestorage"
)
const (
driverName = "filesystem"
)
type driver struct {
path string
}
// NewDriver returns an instance of filesystem driver
func NewDriver(path string) storage.Driver {
return &driver{
path: path,
}
}
// Name returns a human-readable name of the fielsystem driver
func (d *driver) Name() string {
return driverName
}
// Cap returns the capacity of the filesystem storage
func (d *driver) Cap() (*storage.Capacity, error) {
var stat syscall.Statfs_t
err := syscall.Statfs(d.path, &stat)
if err != nil {
return nil, err
}
return &storage.Capacity{
Total: stat.Blocks * uint64(stat.Bsize),
Free: stat.Bavail * uint64(stat.Bsize),
}, nil
}