v.io/jiri@v0.0.0-20160715023856-abfb8b131290/profiles/profilescmdline/internal/example/eg.go (about)

     1  // Copyright 2015 The Vanadium Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package example
     6  
     7  import (
     8  	"flag"
     9  	"fmt"
    10  	"path/filepath"
    11  
    12  	"v.io/jiri"
    13  	"v.io/jiri/profiles"
    14  	"v.io/jiri/profiles/profilesutil"
    15  )
    16  
    17  type exampleManager struct {
    18  	installer, name, root string
    19  	versionInfo           *profiles.VersionInfo
    20  	profile               *profiles.Profile
    21  }
    22  
    23  func newExampleMgr(installer, name string) *exampleManager {
    24  	supported := map[string]interface{}{
    25  		"2": nil,
    26  		"4": nil,
    27  		"3": nil,
    28  	}
    29  	return &exampleManager{
    30  		installer:   installer,
    31  		name:        name,
    32  		versionInfo: profiles.NewVersionInfo("example", supported, "3"),
    33  	}
    34  }
    35  
    36  func New(installer, name string) profiles.Manager {
    37  	return newExampleMgr(installer, name)
    38  }
    39  
    40  func (eg *exampleManager) Name() string {
    41  	return eg.name
    42  }
    43  
    44  func (eg *exampleManager) Installer() string {
    45  	return eg.installer
    46  }
    47  
    48  func (eg *exampleManager) Info() string {
    49  	return `
    50  The example profile is for testing/example purposes only
    51  `
    52  }
    53  
    54  func (eg *exampleManager) VersionInfo() *profiles.VersionInfo {
    55  	return eg.versionInfo
    56  }
    57  
    58  func (eg *exampleManager) String() string {
    59  	return fmt.Sprintf("Profile: %s installed by %s: %s\n", eg.name, eg.installer, eg.versionInfo)
    60  }
    61  
    62  func (eg *exampleManager) OSPackages(jirix *jiri.X, pdb *profiles.DB, root jiri.RelPath, target profiles.Target) ([]string, error) {
    63  	return nil, nil
    64  }
    65  
    66  func (eg *exampleManager) AddFlags(*flag.FlagSet, profiles.Action) {
    67  }
    68  
    69  func (eg *exampleManager) filename(root jiri.RelPath, target profiles.Target) jiri.RelPath {
    70  	r := root.Join("eg")
    71  	dir := target.TargetSpecificDirname()
    72  	return r.Join(dir)
    73  }
    74  
    75  func (eg *exampleManager) Install(jirix *jiri.X, pdb *profiles.DB, root jiri.RelPath, target profiles.Target) error {
    76  	version, err := eg.versionInfo.Select(target.Version())
    77  	if err != nil {
    78  		return err
    79  	}
    80  	target.SetVersion(version)
    81  	dir := eg.filename(root, target).Abs(jirix)
    82  	if err := jirix.NewSeq().
    83  		MkdirAll(dir, profilesutil.DefaultDirPerm).
    84  		WriteFile(filepath.Join(dir, "version"), []byte(version), profilesutil.DefaultFilePerm).
    85  		WriteFile(filepath.Join(dir, version), []byte(version), profilesutil.DefaultFilePerm).
    86  		Done(); err != nil {
    87  		return err
    88  	}
    89  	eg.profile = pdb.InstallProfile(eg.installer, eg.name, string(root))
    90  	target.InstallationDir = string(root)
    91  	return pdb.AddProfileTarget(eg.installer, eg.name, target)
    92  }
    93  
    94  func (eg *exampleManager) Uninstall(jirix *jiri.X, pdb *profiles.DB, root jiri.RelPath, target profiles.Target) error {
    95  	version, err := eg.versionInfo.Select(target.Version())
    96  	if err != nil {
    97  		return err
    98  	}
    99  	dir := eg.filename(root, target).Abs(jirix)
   100  	if err := jirix.NewSeq().WriteFile(filepath.Join(dir, "version"), []byte(version), profilesutil.DefaultFilePerm).
   101  		WriteFile(filepath.Join(dir, version), []byte(version), profilesutil.DefaultFilePerm).
   102  		Remove(filepath.Join(dir, version)).
   103  		Done(); err != nil {
   104  		return err
   105  	}
   106  	if pdb.RemoveProfileTarget(eg.installer, eg.name, target) {
   107  		eg.profile = nil
   108  	}
   109  	return nil
   110  }