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1# Copyright 2016 The Chromium Authors. All rights reserved.
2# Use of this source code is governed by a BSD-style license that can be
3# found in the LICENSE file.
4
5"""Utility functions for AFE-based interactions.
6
7NOTE: This module should only be used in the context of a running test. Any
8      utilities that require accessing the AFE, should do so by creating
9      their own instance of the AFE client and interact with it directly.
10"""
11
12import common
13from autotest_lib.client.common_lib import global_config
14from autotest_lib.server.cros import autoupdater
15from autotest_lib.server.cros import provision
16from autotest_lib.server.cros.dynamic_suite import frontend_wrappers
17
18
19AFE = frontend_wrappers.RetryingAFE(timeout_min=5, delay_sec=10)
20_CROS_VERSION_MAP = AFE.get_stable_version_map(AFE.CROS_IMAGE_TYPE)
21_FIRMWARE_VERSION_MAP = AFE.get_stable_version_map(AFE.FIRMWARE_IMAGE_TYPE)
22_FAFT_VERSION_MAP = AFE.get_stable_version_map(AFE.FAFT_IMAGE_TYPE)
23
24_CONFIG = global_config.global_config
25ENABLE_DEVSERVER_TRIGGER_AUTO_UPDATE = _CONFIG.get_config_value(
26        'CROS', 'enable_devserver_trigger_auto_update', type=bool,
27        default=False)
28
29
30def _host_in_lab(host):
31    """Check if the host is in the lab and an object the AFE knows.
32
33    This check ensures that autoserv and the host's current job is running
34    inside a fully Autotest instance, aka a lab environment. If this is the
35    case it then verifies the host is registed with the configured AFE
36    instance.
37
38    @param host: Host object to verify.
39
40    @returns The host model object.
41    """
42    if not host.job or not host.job.in_lab:
43        return False
44    return host._afe_host
45
46
47def get_stable_cros_image_name(board):
48    """Retrieve the Chrome OS stable image name for a given board.
49
50    @param board: Board to lookup.
51
52    @returns Name of a Chrome OS image to be installed in order to
53            repair the given board.
54    """
55    return _CROS_VERSION_MAP.get_image_name(board)
56
57
58def get_stable_firmware_version(model):
59    """Retrieve the stable firmware version for a given model.
60
61    @param model: Model to lookup.
62
63    @returns A version of firmware to be installed via
64             `chromeos-firmwareupdate` from a repair build.
65    """
66    return _FIRMWARE_VERSION_MAP.get_version(model)
67
68
69def get_stable_faft_version(board):
70    """Retrieve the stable firmware version for FAFT DUTs.
71
72    @param board: Board to lookup.
73
74    @returns A version of firmware to be installed in order to
75            repair firmware on a DUT used for FAFT testing.
76    """
77    return _FAFT_VERSION_MAP.get_version(board)
78
79
80def _clear_host_attributes_before_provision(host, info):
81    """Clear host attributes before provision, e.g., job_repo_url.
82
83    @param host: A Host object to clear attributes before provision.
84    @param info: A HostInfo to update the attributes in.
85    """
86    attributes = host.get_attributes_to_clear_before_provision()
87    if not attributes:
88        return
89
90    for key in attributes:
91        info.attributes.pop(key, None)
92
93
94def machine_install_and_update_labels(host, update_url,
95                                      use_quick_provision=False,
96                                      with_cheets=False):
97    """Install a build and update the version labels on a host.
98
99    @param host: Host object where the build is to be installed.
100    @param update_url: URL of the build to install.
101    @param use_quick_provision:  If true, then attempt to use
102        quick-provision for the update.
103    @param with_cheets: If true, installation is for a specific, custom
104        version of Android for a target running ARC.
105    """
106    info = host.host_info_store.get()
107    info.clear_version_labels()
108    _clear_host_attributes_before_provision(host, info)
109    host.host_info_store.commit(info)
110    updater = autoupdater.ChromiumOSUpdater(
111            update_url, host=host, use_quick_provision=use_quick_provision)
112    image_name, host_attributes = updater.run_update()
113    info = host.host_info_store.get()
114    info.attributes.update(host_attributes)
115    if with_cheets:
116        image_name += provision.CHEETS_SUFFIX
117    info.set_version_label(host.VERSION_PREFIX, image_name)
118    host.host_info_store.commit(info)
119