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Viewing changes to src/github.com/juju/juju/container/directory.go

  • Committer: Nicholas Skaggs
  • Date: 2016-10-24 20:56:05 UTC
  • Revision ID: nicholas.skaggs@canonical.com-20161024205605-z8lta0uvuhtxwzwl
Initi with beta15

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src/github.com/juju/juju/container/directory.go
 
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// Copyright 2013 Canonical Ltd.
 
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// Licensed under the AGPLv3, see LICENCE file for details.
 
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package container
 
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import (
 
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        "os"
 
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        "path/filepath"
 
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        "github.com/juju/loggo"
 
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        "github.com/juju/utils"
 
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)
 
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var (
 
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        logger              = loggo.GetLogger("juju.container")
 
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        ContainerDir        = "/var/lib/juju/containers"
 
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        RemovedContainerDir = "/var/lib/juju/removed-containers"
 
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)
 
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// NewDirectory creates a new directory for the container name in the
 
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// directory identified by `ContainerDir`.
 
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func NewDirectory(containerName string) (directory string, err error) {
 
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        directory = dirForName(containerName)
 
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        logger.Tracef("create directory: %s", directory)
 
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        if err = os.MkdirAll(directory, 0755); err != nil {
 
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                logger.Errorf("failed to create container directory: %v", err)
 
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                return "", err
 
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        }
 
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        return directory, nil
 
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}
 
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// RemoveDirectory moves the container directory from `ContainerDir`
 
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// to `RemovedContainerDir` and makes sure that the names don't clash.
 
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func RemoveDirectory(containerName string) error {
 
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        // Move the directory.
 
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        logger.Tracef("create old container dir: %s", RemovedContainerDir)
 
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        if err := os.MkdirAll(RemovedContainerDir, 0755); err != nil {
 
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                logger.Errorf("failed to create removed container directory: %v", err)
 
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                return err
 
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        }
 
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        removedDir, err := utils.UniqueDirectory(RemovedContainerDir, containerName)
 
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        if err != nil {
 
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                logger.Errorf("was not able to generate a unique directory: %v", err)
 
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                return err
 
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        }
 
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        if err := os.Rename(dirForName(containerName), removedDir); err != nil {
 
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                logger.Errorf("failed to rename container directory: %v", err)
 
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                return err
 
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        }
 
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        return nil
 
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}
 
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func dirForName(containerName string) string {
 
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        return filepath.Join(ContainerDir, containerName)
 
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}