root / lib / rapi / client_utils.py @ a0095d84
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1 | 20b509de | Michael Hanselmann | #
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2 | 20b509de | Michael Hanselmann | #
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3 | 20b509de | Michael Hanselmann | |
4 | 20b509de | Michael Hanselmann | # Copyright (C) 2010 Google Inc.
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5 | 20b509de | Michael Hanselmann | #
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6 | 20b509de | Michael Hanselmann | # This program is free software; you can redistribute it and/or modify
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7 | 20b509de | Michael Hanselmann | # it under the terms of the GNU General Public License as published by
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8 | 20b509de | Michael Hanselmann | # the Free Software Foundation; either version 2 of the License, or
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9 | 20b509de | Michael Hanselmann | # (at your option) any later version.
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10 | 20b509de | Michael Hanselmann | #
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11 | 20b509de | Michael Hanselmann | # This program is distributed in the hope that it will be useful, but
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12 | 20b509de | Michael Hanselmann | # WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | 20b509de | Michael Hanselmann | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | 20b509de | Michael Hanselmann | # General Public License for more details.
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15 | 20b509de | Michael Hanselmann | #
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16 | 20b509de | Michael Hanselmann | # You should have received a copy of the GNU General Public License
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17 | 20b509de | Michael Hanselmann | # along with this program; if not, write to the Free Software
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18 | 20b509de | Michael Hanselmann | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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19 | 20b509de | Michael Hanselmann | # 02110-1301, USA.
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20 | 20b509de | Michael Hanselmann | |
21 | 20b509de | Michael Hanselmann | |
22 | 20b509de | Michael Hanselmann | """RAPI client utilities.
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23 | 20b509de | Michael Hanselmann |
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24 | 20b509de | Michael Hanselmann | """
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25 | 20b509de | Michael Hanselmann | |
26 | 20b509de | Michael Hanselmann | from ganeti import constants |
27 | 20b509de | Michael Hanselmann | from ganeti import cli |
28 | 20b509de | Michael Hanselmann | |
29 | 20b509de | Michael Hanselmann | from ganeti.rapi import client |
30 | 20b509de | Michael Hanselmann | |
31 | 20b509de | Michael Hanselmann | # Local constant to avoid importing ganeti.http
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32 | 20b509de | Michael Hanselmann | HTTP_NOT_FOUND = 404
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33 | 20b509de | Michael Hanselmann | |
34 | 20b509de | Michael Hanselmann | |
35 | 20b509de | Michael Hanselmann | class RapiJobPollCb(cli.JobPollCbBase): |
36 | 20b509de | Michael Hanselmann | def __init__(self, cl): |
37 | 20b509de | Michael Hanselmann | """Initializes this class.
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38 | 20b509de | Michael Hanselmann |
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39 | 20b509de | Michael Hanselmann | @param cl: RAPI client instance
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40 | 20b509de | Michael Hanselmann |
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41 | 20b509de | Michael Hanselmann | """
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42 | 20b509de | Michael Hanselmann | cli.JobPollCbBase.__init__(self)
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43 | 20b509de | Michael Hanselmann | |
44 | 20b509de | Michael Hanselmann | self.cl = cl
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45 | 20b509de | Michael Hanselmann | |
46 | 20b509de | Michael Hanselmann | def WaitForJobChangeOnce(self, job_id, fields, |
47 | 20b509de | Michael Hanselmann | prev_job_info, prev_log_serial): |
48 | 20b509de | Michael Hanselmann | """Waits for changes on a job.
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49 | 20b509de | Michael Hanselmann |
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50 | 20b509de | Michael Hanselmann | """
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51 | 20b509de | Michael Hanselmann | try:
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52 | 20b509de | Michael Hanselmann | result = self.cl.WaitForJobChange(job_id, fields,
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53 | 20b509de | Michael Hanselmann | prev_job_info, prev_log_serial) |
54 | 20b509de | Michael Hanselmann | except client.GanetiApiError, err:
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55 | 20b509de | Michael Hanselmann | if err.code == HTTP_NOT_FOUND:
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56 | 20b509de | Michael Hanselmann | return None |
57 | 20b509de | Michael Hanselmann | |
58 | 20b509de | Michael Hanselmann | raise
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59 | 20b509de | Michael Hanselmann | |
60 | 20b509de | Michael Hanselmann | if result is None: |
61 | 20b509de | Michael Hanselmann | return constants.JOB_NOTCHANGED
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62 | 20b509de | Michael Hanselmann | |
63 | 20b509de | Michael Hanselmann | return (result["job_info"], result["log_entries"]) |
64 | 20b509de | Michael Hanselmann | |
65 | 20b509de | Michael Hanselmann | def QueryJobs(self, job_ids, fields): |
66 | 20b509de | Michael Hanselmann | """Returns the given fields for the selected job IDs.
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67 | 20b509de | Michael Hanselmann |
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68 | 20b509de | Michael Hanselmann | @type job_ids: list of numbers
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69 | 20b509de | Michael Hanselmann | @param job_ids: Job IDs
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70 | 20b509de | Michael Hanselmann | @type fields: list of strings
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71 | 20b509de | Michael Hanselmann | @param fields: Fields
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72 | 20b509de | Michael Hanselmann |
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73 | 20b509de | Michael Hanselmann | """
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74 | 20b509de | Michael Hanselmann | if len(job_ids) != 1: |
75 | 20b509de | Michael Hanselmann | raise NotImplementedError("Only one job supported at this time") |
76 | 20b509de | Michael Hanselmann | |
77 | 20b509de | Michael Hanselmann | try:
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78 | 20b509de | Michael Hanselmann | result = self.cl.GetJobStatus(job_ids[0]) |
79 | 20b509de | Michael Hanselmann | except client.GanetiApiError, err:
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80 | 20b509de | Michael Hanselmann | if err.code == HTTP_NOT_FOUND:
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81 | 20b509de | Michael Hanselmann | return [None] |
82 | 20b509de | Michael Hanselmann | |
83 | 20b509de | Michael Hanselmann | raise
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84 | 20b509de | Michael Hanselmann | |
85 | 20b509de | Michael Hanselmann | return [[result[name] for name in fields], ] |
86 | 20b509de | Michael Hanselmann | |
87 | 20b509de | Michael Hanselmann | |
88 | 20b509de | Michael Hanselmann | def PollJob(rapi_client, job_id, reporter): |
89 | 20b509de | Michael Hanselmann | """Function to poll for the result of a job.
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90 | 20b509de | Michael Hanselmann |
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91 | 20b509de | Michael Hanselmann | @param rapi_client: RAPI client instance
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92 | 20b509de | Michael Hanselmann | @type job_id: number
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93 | 20b509de | Michael Hanselmann | @param job_id: Job ID
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94 | 20b509de | Michael Hanselmann | @type reporter: L{cli.JobPollReportCbBase}
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95 | 20b509de | Michael Hanselmann | @param reporter: PollJob reporter instance
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96 | 20b509de | Michael Hanselmann |
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97 | 20b509de | Michael Hanselmann | """
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98 | 20b509de | Michael Hanselmann | return cli.GenericPollJob(job_id, RapiJobPollCb(rapi_client), reporter) |