github.com/david-imola/snapd@v0.0.0-20210611180407-2de8ddeece6d/overlord/backend.go (about)

     1  // -*- Mode: Go; indent-tabs-mode: t -*-
     2  
     3  /*
     4   * Copyright (C) 2016 Canonical Ltd
     5   *
     6   * This program is free software: you can redistribute it and/or modify
     7   * it under the terms of the GNU General Public License version 3 as
     8   * published by the Free Software Foundation.
     9   *
    10   * This program is distributed in the hope that it will be useful,
    11   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    12   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    13   * GNU General Public License for more details.
    14   *
    15   * You should have received a copy of the GNU General Public License
    16   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    17   *
    18   */
    19  
    20  package overlord
    21  
    22  import (
    23  	"time"
    24  
    25  	"github.com/snapcore/snapd/osutil"
    26  	"github.com/snapcore/snapd/overlord/state"
    27  )
    28  
    29  type overlordStateBackend struct {
    30  	path           string
    31  	ensureBefore   func(d time.Duration)
    32  	requestRestart func(t state.RestartType)
    33  }
    34  
    35  func (osb *overlordStateBackend) Checkpoint(data []byte) error {
    36  	return osutil.AtomicWriteFile(osb.path, data, 0600, 0)
    37  }
    38  
    39  func (osb *overlordStateBackend) EnsureBefore(d time.Duration) {
    40  	osb.ensureBefore(d)
    41  }
    42  
    43  func (osb *overlordStateBackend) RequestRestart(t state.RestartType) {
    44  	osb.requestRestart(t)
    45  }