Revision 0890e0d1 lib/utils/version.py
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import re |
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from ganeti import constants |
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_FULL_VERSION_RE = re.compile(r"(\d+)\.(\d+)\.(\d+)") |
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_SHORT_VERSION_RE = re.compile(r"(\d+)\.(\d+)") |
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# The first Ganeti version that supports automatic upgrades |
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FIRST_UPGRADE_VERSION = (2, 10, 0) |
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CURRENT_VERSION = (constants.VERSION_MAJOR, constants.VERSION_MINOR, |
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constants.VERSION_REVISION) |
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# Format for CONFIG_VERSION: |
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# 01 03 0123 = 01030123 |
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# ^^ ^^ ^^^^ |
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return (int(m.group(1)), int(m.group(2)), 0) |
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return None |
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def UpgradeRange(target, current=CURRENT_VERSION): |
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"""Verify whether a version is within the range of automatic upgrades. |
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@param target: The version to upgrade to as (major, minor, revision) |
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@type target: tuple |
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@param current: The version to upgrade from as (major, minor, revision) |
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@type current: tuple |
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@rtype: string or None |
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@return: None, if within the range, and a human-readable error message |
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otherwise |
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""" |
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if target < FIRST_UPGRADE_VERSION or current < FIRST_UPGRADE_VERSION: |
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return "automatic upgrades only supported from 2.10 onwards" |
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if target[0] != current[0]: |
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return "different major versions" |
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if target[1] < current[1] - 1: |
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return "can only downgrade one minor version at a time" |
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return None |
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