Module: Veewee::Provider::Core::Helper::Iso

Included in:
Definition, Box
Defined in:
lib/veewee/provider/core/helper/iso.rb

Instance Method Summary collapse

Instance Method Details

#download_iso(url, filename) ⇒ Object 



12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
 
# File 'lib/veewee/provider/core/helper/iso.rb', line 12

def download_iso(url,filename)
  if !File.exists?(env.config.veewee.iso_dir)
    ui.info "Creating an iso directory"
    FileUtils.mkdir(env.config.veewee.iso_dir)
  end
  ui.info "Checking if isofile #{filename} already exists."
  full_path=File.join(env.config.veewee.iso_dir,filename)
  ui.info "Full path: #{full_path}"
  if File.exists?(full_path)
    ui.info ""
    ui.info "The isofile #{filename} already exists."
  else
    download_progress(url,full_path)
  end
end

#download_progress(url, localfile) ⇒ Object 



28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
 
# File 'lib/veewee/provider/core/helper/iso.rb', line 28

def download_progress(url,localfile)
  pbar = nil
  URI.parse(url).open(
    :content_length_proc => lambda {|t|
    if t && 0 < t
      pbar = ProgressBar.new("Fetching file", t)
      pbar.file_transfer_mode
    end
  },
    :progress_proc => lambda {|s|
    pbar.set s if pbar
  }) { |src|
    # We assume large 10K files, so this is tempfile object
    env.logger.info "#{src.class}"
      ui.info "Moving #{src.path} to #{localfile}"
      # Force the close of the src stream to release handle before moving
      # Not forcing the close may cause an issue on windows (Permission Denied)
      src.close
      FileUtils.mv(src.path,localfile)
      #open(localfile,"wb") { |dst|
        #dst.write(src.read)
      #}
  }
end

#hashsum(filename) ⇒ Object

Compute hash code



54
55
56
57
58
59
60
61
62
63
64
65
66
 
# File 'lib/veewee/provider/core/helper/iso.rb', line 54

def hashsum(filename)
  checksum=Digest::MD5.new
  buflen=1024
  open(filename, "rb") do |io|
    counter = 0
    while (!io.eof)
      readBuf = io.readpartial(buflen)
      env.ui.info('.',{:new_line => false,:prefix => false }) if ((counter+=1) % 20000 == 0)
      checksum.update(readBuf)
    end
  end
  return checksum.hexdigest
end

#verify_iso(options) ⇒ Object 



80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
 
# File 'lib/veewee/provider/core/helper/iso.rb', line 80

def verify_iso(options)
  filename=self.iso_file
  full_path=File.join(env.config.veewee.iso_dir,filename)

  if File.exists?(full_path)
    ui.info ""
    ui.info "The isofile #{filename} already exists."
  else

    path1=Pathname.new(full_path)
    path2=Pathname.new(Dir.pwd)
    rel_path=path1.relative_path_from(path2).to_s

    ui.info ""
    ui.info "We did not find an isofile here : #{full_path}. \n\nThe definition provided the following download information:"
    unless "#{self.iso_src}"==""
      ui.info "- Download url: #{self.iso_src}"
    end
    ui.info "- Md5 Checksum: #{self.iso_md5}"
    ui.info "#{self.iso_download_instructions}"
    ui.info ""

    if self.iso_src == ""
      ui.info "Please follow the instructions above:"
      ui.info "- to get the ISO"
      ui.info" - put it in <currentdir>/iso"
      ui.info "- then re-run the command"
      ui.info ""
      raise Veewee::Error, "No ISO src is available, can't download it automatically"
    else
      answer=nil
      answer="yes" if options["auto"]==true
      env.logger.info "Auto download enabled?#{answer} #{!options['auto'].nil?}"
      if answer.nil?
        answer=ui.ask("Download? (Yes/No)") {|q| q.default="No"}
      end

      if answer.downcase == "yes"
        begin
          download_iso(self.iso_src,filename)
        rescue OpenURI::HTTPError => ex
          ui.error "There was an error downloading #{self.iso_src}:"
          ui.error "#{ex}"
          raise Veewee::Error, "There was an error downloading #{self.iso_src}:\n#{ex}"
        end
      else
        ui.info "You have selected manual download: "
        ui.info "curl -C - -L '#{self.iso_src}' -o '#{rel_path}'"
        ui.info "md5 '#{rel_path}' "
        ui.info ""
        exit
      end

      unless File.readable?(full_path)
        raise Veewee::Error, "The provided iso #{full_path} is not readable"
      end

    end

  end

  verify_md5sum(full_path) if options["md5check"] && !self.iso_md5.nil?

end

#verify_md5sum(full_path) ⇒ Object 



68
69
70
71
72
73
74
75
76
77
78
 
# File 'lib/veewee/provider/core/helper/iso.rb', line 68

def verify_md5sum(full_path)
  filename = File.basename(full_path)
  ui.info "Verifying md5 checksum : #{self.iso_md5}"
  file_md5=hashsum(full_path)

  unless file_md5==self.iso_md5
    ui.error "The MD5 checksums for file #{filename } do not match: "
    ui.error "- #{file_md5} (current) vs #{self.iso_md5} (specified)"
    raise Veewee::Error, "The MD5 checksums for file #{filename } do not match: \n"+ "- #{file_md5} (current) vs #{self.iso_md5} (specified)"
  end
end