Class: VagrantPlugins::QEMU::Driver

Inherits:
Object
  • Object
show all
Defined in:
lib/vagrant-qemu/driver.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(id, dir, tmp) ⇒ Driver

Returns a new instance of Driver.



19
20
21
22
23
 
# File 'lib/vagrant-qemu/driver.rb', line 19

def initialize(id, dir, tmp)
  @vm_id = id
  @data_dir = dir
  @tmp_dir = tmp.join("vagrant-qemu")
end

Instance Attribute Details

#data_dir ⇒ Object (readonly)

Returns the value of attribute data_dir.



16
17
18
 
# File 'lib/vagrant-qemu/driver.rb', line 16

def data_dir
  @data_dir
end

#tmp_dir ⇒ Object (readonly)

Returns the value of attribute tmp_dir.



17
18
19
 
# File 'lib/vagrant-qemu/driver.rb', line 17

def tmp_dir
  @tmp_dir
end

#vm_id ⇒ String (readonly)

Returns VM ID.

Returns:

  • (String) —

    VM ID



15
16
17
 
# File 'lib/vagrant-qemu/driver.rb', line 15

def vm_id
  @vm_id
end

Instance Method Details

#created? ⇒ Boolean

Returns:

  • (Boolean) 


161
162
163
 
# File 'lib/vagrant-qemu/driver.rb', line 161

def created?
  result = @data_dir.join(@vm_id).directory?
end

#delete ⇒ Object 



36
37
38
39
40
41
42
43
 
# File 'lib/vagrant-qemu/driver.rb', line 36

def delete
  if created?
    id_dir = @data_dir.join(@vm_id)
    FileUtils.rm_rf(id_dir)
    id_tmp_dir = @tmp_dir.join(@vm_id)
    FileUtils.rm_rf(id_tmp_dir)
  end
end

#execute(*cmd, **opts, &block) ⇒ Object 



177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
 
# File 'lib/vagrant-qemu/driver.rb', line 177

def execute(*cmd, **opts, &block)
  result = nil

  if opts && opts[:detach]
    # give it some time to startup
    timeout = 5

    # edit version of "Subprocess.execute" for detach
    workdir = Dir.pwd
    process = ChildProcess.build(*cmd)

    stdout, stdout_writer = ::IO.pipe
    stderr, stderr_writer = ::IO.pipe
    process.io.stdout = stdout_writer
    process.io.stderr = stderr_writer

    process.leader = true
    process.detach = true

    ::Vagrant::Util::SafeChdir.safe_chdir(workdir) do
      process.start
    end

    if RUBY_PLATFORM != "java"
      stdout_writer.close
      stderr_writer.close
    end

    io_data = { stdout: "", stderr: "" }
    start_time = Time.now.to_i
    open_readers = [stdout, stderr]

    while true
      results = ::IO.select(open_readers, nil, nil, 0.1)
      results ||= []
      readers = results[0]

      # Check if we have exceeded our timeout
      return if (Time.now.to_i - start_time) > timeout

      if readers && !readers.empty?
        readers.each do |r|
          data = ::Vagrant::Util::IO.read_until_block(r)
          next if data.empty?

          io_name = r == stdout ? :stdout : :stderr
          io_data[io_name] += data
        end
      end

      break if process.exited?
    end

    if RUBY_PLATFORM == "java"
      stdout_writer.close
      stderr_writer.close
    end

    result = ::Vagrant::Util::Subprocess::Result.new(process.exit_code, io_data[:stdout], io_data[:stderr])
  else
    # Append in the options for subprocess
    cmd << { notify: [:stdout, :stderr, :stdin] }

    interrupted  = false
    int_callback = ->{ interrupted = true }
    result = ::Vagrant::Util::Busy.busy(int_callback) do
      ::Vagrant::Util::Subprocess.execute(*cmd, &block)
    end
  end

  result.stderr.gsub!("\r\n", "\n")
  result.stdout.gsub!("\r\n", "\n")

  if result.exit_code != 0 && !interrupted
    raise Errors::ExecuteError,
      command: cmd.inspect,
      stderr: result.stderr,
      stdout: result.stdout
  end

  if opts
    if opts[:with_stderr]
      return result.stdout + " " + result.stderr
    else
      return result.stdout
    end
  end
end

#get_current_state ⇒ Object 



25
26
27
28
29
30
31
32
33
34
 
# File 'lib/vagrant-qemu/driver.rb', line 25

def get_current_state
  case
  when running?
    :running
  when created?
    :stopped
  else
    :not_created
  end
end

#import(options) ⇒ Object 



138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
 
# File 'lib/vagrant-qemu/driver.rb', line 138

def import(options)
  new_id = SecureRandom.urlsafe_base64(8)

  # Make dir
  id_dir = @data_dir.join(new_id)
  FileUtils.mkdir_p(id_dir)
  id_tmp_dir = @tmp_dir.join(new_id)
  FileUtils.mkdir_p(id_tmp_dir)

  # Prepare firmware
  if options[:arch] == "aarch64"
    execute("cp", options[:qemu_dir].join("edk2-aarch64-code.fd").to_s, id_dir.join("edk2-aarch64-code.fd").to_s)
    execute("cp", options[:qemu_dir].join("edk2-arm-vars.fd").to_s, id_dir.join("edk2-arm-vars.fd").to_s)
  end

  # Create image
  execute("qemu-img", "create", "-f", "qcow2", "-F", "qcow2", "-b", options[:image_path].to_s, id_dir.join("linked-box.img").to_s)

  server = {
    :id => new_id,
  }
end

#running? ⇒ Boolean

Returns:

  • (Boolean) 


165
166
167
168
169
170
171
172
173
174
175
 
# File 'lib/vagrant-qemu/driver.rb', line 165

def running?
  pid_file = @data_dir.join(@vm_id).join("qemu.pid")
  return false if !pid_file.file?

  begin
    Process.getpgid(File.read(pid_file).to_i)
    true
  rescue Errno::ESRCH
    false
  end
end

#start(options) ⇒ Object 



45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
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
 
# File 'lib/vagrant-qemu/driver.rb', line 45

def start(options)
  if !running?
    id_dir = @data_dir.join(@vm_id)
    image_path = id_dir.join("linked-box.img").to_s
    pid_file = id_dir.join("qemu.pid").to_s

    id_tmp_dir = @tmp_dir.join(@vm_id)
    FileUtils.mkdir_p(id_tmp_dir)

    control_socket = ""
    if !options[:control_port].nil?
      control_socket = "port=#{options[:control_port]},host=localhost,ipv4=on"
    else
      unix_socket_path = id_tmp_dir.join("qemu_socket").to_s
      control_socket = "path=#{unix_socket_path}"
    end

    debug_socket = ""
    if !options[:debug_port].nil?
      debug_socket = "port=#{options[:debug_port]},host=localhost,ipv4=on"
    else
      unix_socket_serial_path = id_tmp_dir.join("qemu_socket_serial").to_s
      debug_socket = "path=#{unix_socket_serial_path}"
    end

    cmd = []
    cmd += %W(qemu-system-#{options[:arch]})

    # basic
    cmd += %W(-machine #{options[:machine]})
    cmd += %W(-cpu #{options[:cpu]})
    cmd += %W(-smp #{options[:smp]})
    cmd += %W(-m #{options[:memory]})
    cmd += %W(-device #{options[:net_device]},netdev=net0)

    # ports
    hostfwd = "hostfwd=tcp::#{options[:ssh_port]}-:22"
    options[:ports].each do |v|
      hostfwd += ",hostfwd=#{v}"
    end
    extra_netdev = ""
    if !options[:extra_netdev_args].nil?
      extra_netdev = ",#{options[:extra_netdev_args]}"
    end
    cmd += %W(-netdev user,id=net0,#{hostfwd}#{extra_netdev})

    # drive
    cmd += %W(-drive if=virtio,format=qcow2,file=#{image_path})
    if options[:arch] == "aarch64"
      fm1_path = id_dir.join("edk2-aarch64-code.fd").to_s
      fm2_path = id_dir.join("edk2-arm-vars.fd").to_s
      cmd += %W(-drive if=pflash,format=raw,file=#{fm1_path},readonly=on)
      cmd += %W(-drive if=pflash,format=raw,file=#{fm2_path})
    end

    # control
    cmd += %W(-chardev socket,id=mon0,#{control_socket},server=on,wait=off)
    cmd += %W(-mon chardev=mon0,mode=readline)
    cmd += %W(-chardev socket,id=ser0,#{debug_socket},server=on,wait=off)
    cmd += %W(-serial chardev:ser0)
    cmd += %W(-pidfile #{pid_file})
    cmd += %W(-parallel null -monitor none -display none -vga none)
    if !options[:no_daemonize]
      cmd += %W(-daemonize)
    end

    # user-defined
    cmd += options[:extra_qemu_args]

    execute(*cmd, {:detach => options[:no_daemonize]})
  end
end

#stop(options) ⇒ Object 



118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
 
# File 'lib/vagrant-qemu/driver.rb', line 118

def stop(options)
  if running?
    if !options[:control_port].nil?
      Socket.tcp("localhost", options[:control_port], connect_timeout: 5) do |sock|
        sock.print "system_powerdown\n"
        sock.close_write
        sock.read
      end
    else
      id_tmp_dir = @tmp_dir.join(@vm_id)
      unix_socket_path = id_tmp_dir.join("qemu_socket").to_s
      Socket.unix(unix_socket_path) do |sock|
        sock.print "system_powerdown\n"
        sock.close_write
        sock.read
      end
   end
  end
end