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filestate.go
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filestate.go
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/*
* Copyright 2014-2015 Jason Woods.
*
* This file is a modification of code from Logstash Forwarder.
* Copyright 2012-2013 Jordan Sissel and contributors.
*
* 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 registrar
import (
"os"
)
type FileState struct {
FileStateOS
Source *string `json:"source,omitempty"`
Offset int64 `json:"offset,omitempty"`
}
type FileInfo struct {
fileinfo os.FileInfo
}
func NewFileInfo(fileinfo os.FileInfo) *FileInfo {
return &FileInfo{
fileinfo: fileinfo,
}
}
func (fs *FileInfo) SameAs(info os.FileInfo) bool {
return os.SameFile(info, fs.fileinfo)
}
func (fs *FileInfo) Stat() os.FileInfo {
return fs.fileinfo
}
func (fs *FileInfo) Update(fileinfo os.FileInfo, identity *FileIdentity) {
fs.fileinfo = fileinfo
}
func (fs *FileState) Stat() os.FileInfo {
return nil
}
func (fs *FileState) Update(fileinfo os.FileInfo, identity *FileIdentity) {
// Promote to a FileInfo
(*identity) = NewFileInfo(fileinfo)
}
type FileIdentity interface {
SameAs(os.FileInfo) bool
Stat() os.FileInfo
Update(os.FileInfo, *FileIdentity)
}