Esempio n. 1
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 def test_get_free_devices(self):
     # (note, device1 is not free)
     add_server('server')
     add_image('img1', id=23)
     add_device("device2", state='free', environment='foo')
     add_device("device3", state='free', environment='bar')
     # device4 has an outstanding request that's still open, even
     # though its state is free; it should not be returned
     add_device("device4", state='free', environment='bar')
     add_request('server', device='device4', image='img1')
     self.assertEqual(sorted([x['name'] for x in data.get_free_devices()]),
                      sorted(['device2', 'device3']))
     self.assertEqual(sorted([x['name'] for x in
                              data.get_free_devices(environment='foo')]),
                      sorted(['device2']))
     self.assertEqual(sorted([x['name'] for x in
                              data.get_free_devices(environment='bar')]),
                      sorted(['device3']))
     self.assertEqual(sorted([x['name'] for x in
                              data.get_free_devices(environment='bing')]),
                      sorted([]))
     self.assertEqual(sorted([x['name'] for x in data.get_free_devices(
                      environment='bar', device_name='device2')]),
                      sorted([]))
     self.assertEqual(sorted([x['name'] for x in data.get_free_devices(
                      environment='bar', device_name='device3')]),
                      sorted(['device3']))
Esempio n. 2
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    def find_device(self):
        self.logger.info('Finding device.')
        device_name = None
        count = self.machine.increment_counter(self.state_name)
        request = data.request_config(self.machine.request_id)
        image_is_reusable = data.image_is_reusable(request['image'])

        free_devices = data.get_free_devices(
                environment=request['environment'],
                device_name=request['requested_device'])

        if free_devices:
            if image_is_reusable:
                devices_with_image = [x for x in free_devices
                                      if x['image'] == request['image'] and
                                         data.from_json(x['boot_config']) ==
                                         data.from_json(request['boot_config'])]
                if devices_with_image:
                    free_devices = devices_with_image

            # pick a device at random from the returned list
            device_name = random.choice(free_devices)['name']
            self.logger.info('Assigning device %s.' % device_name)
            if data.reserve_device(self.machine.request_id,
                                                device_name):
                self.logger.info('Request succeeded.')
                self.machine.goto_state(contacting_lifeguard)
        else:
            self.logger.warn('Request failed!')
            if request['requested_device'] == 'any':
                if count >= self.MAX_ANY_REQUESTS:
                    self.logger.warn('Hit maximum number of attempts to find '
                                     'a free device; giving up.')
                    self.machine.goto_state(device_not_found)
            else:
                if count >= self.MAX_SPECIFIC_REQUESTS:
                    self.logger.warn('Requested device %s is busy.' %
                                     device_name)
                    self.machine.goto_state(device_busy)
Esempio n. 3
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    def find_device(self):
        # FIXME: refactor.
        device_name = None
        count = self.machine.increment_counter(self.state_name)
        request = data.dump_requests(self.machine.request_id)[0]
        if request['requested_device'] == 'any':
            free_devices = data.get_free_devices()
            if free_devices:
                device_id = random.randint(0, len(free_devices) - 1)
                device_name = free_devices[device_id]
                logs.request_logs.add(
                    self.machine.request_id,
                    'assigning device %s' % device_name)
            else:
                self.logger.info('no free devices')
        else:
            device_name = request['requested_device']
            self.logger.info('assigning requested device %s' % device_name)

        if device_name and data.reserve_device(self.machine.request_id,
                                               device_name):
            self.logger.info('request succeeded')
            self.machine.goto_state(contacting_lifeguard)
        else:
            self.logger.warn('request failed!')
            if request['requested_device'] == 'any':
                if count >= self.MAX_ANY_REQUESTS:
                    logs.request_logs.add(
                        self.machine.request_id,
                        'hit maximum number of attempts; giving up')
                    self.machine.goto_state(device_not_found)
            else:
                if count >= self.MAX_SPECIFIC_REQUESTS:
                    logs.request_logs.add(
                        self.machine.request_id,
                        'requested device %s is busy' % device_name)
                    self.machine.goto_state(device_busy)
Esempio n. 4
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    def find_device(self):
        # FIXME: refactor.
        device_name = None
        count = self.machine.increment_counter(self.state_name)
        request = data.dump_requests(self.machine.request_id)[0]
        if request['requested_device'] == 'any':
            free_devices = data.get_free_devices()
            if free_devices:
                device_id = random.randint(0, len(free_devices) - 1)
                device_name = free_devices[device_id]
                logs.request_logs.add(self.machine.request_id,
                                      'assigning device %s' % device_name)
            else:
                self.logger.info('no free devices')
        else:
            device_name = request['requested_device']
            self.logger.info('assigning requested device %s' % device_name)

        if device_name and data.reserve_device(self.machine.request_id,
                                               device_name):
            self.logger.info('request succeeded')
            self.machine.goto_state(contacting_lifeguard)
        else:
            self.logger.warn('request failed!')
            if request['requested_device'] == 'any':
                if count >= self.MAX_ANY_REQUESTS:
                    logs.request_logs.add(
                        self.machine.request_id,
                        'hit maximum number of attempts; giving up')
                    self.machine.goto_state(device_not_found)
            else:
                if count >= self.MAX_SPECIFIC_REQUESTS:
                    logs.request_logs.add(
                        self.machine.request_id,
                        'requested device %s is busy' % device_name)
                    self.machine.goto_state(device_busy)