1..
2  Copyright (C) 2014-2018 Red Hat, Inc.
3
4  This copyrighted material is made available to anyone wishing to use,
5  modify, copy, or redistribute it subject to the terms and conditions of
6  the GNU General Public License v.2, or (at your option) any later version.
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8  ANY WARRANTY expressed or implied, including the implied warranties of
9  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
10  Public License for more details.  You should have received a copy of the
11  GNU General Public License along with this program; if not, write to the
12  Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
13  02110-1301, USA.  Any Red Hat trademarks that are incorporated in the
14  source code or documentation are not subject to the GNU General Public
15  License and may only be used or replicated with the express permission of
16  Red Hat, Inc.
17
18===================================
19 Progress Reporting with Callbacks
20===================================
21
22.. module:: dnf.callback
23
24.. class:: Payload
25
26  Represents one item (file) from the download batch.
27
28  .. method:: __str__
29
30    Provide concise, human-readable representation of this Payload.
31
32  .. attribute:: download_size
33
34    Total size of this Payload when transferred (e.g. over network).
35
36.. class:: DownloadProgress
37
38  Base class providing callbacks to receive information about an ongoing download.
39
40  .. method:: start(total_files, total_size, total_drpms=0)
41
42    Report start of a download batch. `total_files` is the total number of payloads in the batch.
43    `total_size` is the total number of bytes to be downloaded. `total_drpms` is the total number
44    of drpms payloads in the batch.
45
46  .. method:: progress(payload, done)
47
48    Report ongoing progress on the given `payload`. `done` is the number of bytes already downloaded from `payload`.
49
50  .. method:: end(payload, status, msg)
51
52    Report finished download of a `payload`, :class:`.Payload` instance. `status` is a constant with the following meaning:
53
54    ====================== =======================================================
55    `status` value         meaning
56    ====================== =======================================================
57    STATUS_OK              Download finished successfully.
58    STATUS_DRPM            DRPM rebuilt successfully.
59    STATUS_ALREADY_EXISTS  Download skipped because the local file already exists.
60    STATUS_MIRROR          Download failed on the current mirror, will try to use
61                           next mirror in the list.
62    STATUS_FAILED          Download failed because of another error.
63    ====================== =======================================================
64
65    `msg` is an optional string error message further explaining the `status`.
66
67.. class:: TransactionProgress
68
69  Base class providing callbacks to receive information about an ongoing transaction.
70
71  .. method:: error(message)
72
73    Report an error that occurred during the transaction. `message` is a string which describes the error.
74
75  .. method:: progress(package, action, ti_done, ti_total, ts_done, ts_total)
76
77    Report ongoing progress on the given transaction item. `package` is the :class:`dnf.package.Package` being processed and `action` is a constant with the following meaning:
78
79    ================== ================================================================================= ===========
80    `action` value     meaning                                                                           Appearance*
81    ================== ================================================================================= ===========
82    PKG_CLEANUP        `package` cleanup is being performed.                                             3
83    PKG_DOWNGRADE      `package` is being installed as a downgrade.                                      2
84    PKG_DOWNGRADED     installed `package` is being downgraded.                                          2
85    PKG_INSTALL        `package` is being installed.                                                     2
86    PKG_OBSOLETE       `package` is obsoleting another package.                                          2
87    PKG_OBSOLETED      installed `package` is being obsoleted.                                           2
88    PKG_REINSTALL      `package` is installed as a reinstall.                                            2
89    PKG_REINSTALLED    installed `package` is being reinstalled.                                         2
90    PKG_REMOVE         `package` is being removed.                                                       2
91    PKG_UPGRADE        `package` is installed as an upgrade.                                             2
92    PKG_UPGRADED       installed `package` is being upgraded.                                            2
93    PKG_VERIFY         `package` is being verified.                                                      5
94    PKG_SCRIPTLET      `package` scriptlet is being performed.                                           Anytime
95    TRANS_PREPARATION  `transaction` is being prepared.                                                  1
96    TRANS_POST         The post-trans phase started. In this case, all the other arguments are ``None``. 4
97    ================== ================================================================================= ===========
98
99  \*\ This is order in which state of transaction which callback action can appear. Only PKG_SCRIPTLET
100  can appear anytime during transaction even before transaction starts.
101
102  `ti_done` is the number of processed bytes of the transaction item, `ti_total` is the total number of bytes of the transaction item, `ts_done` is the number of actions processed in the whole transaction and `ts_total` is the total number of actions in the whole transaction.
103