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Move "undo_changes" to britney_util

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Signed-off-by: Niels Thykier <niels@thykier.net>
This commit is contained in:
Niels Thykier 2012-12-28 11:32:03 +01:00
parent dd056f8901
commit 6d6e735bac
2 changed files with 75 additions and 71 deletions
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74
britney.py
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@ -212,7 +212,7 @@ from excuse import Excuse
from migrationitem import MigrationItem, HintItem
from hints import HintCollection
from britney import buildSystem
from britney_util import same_source
from britney_util import same_source, undo_changes
from consts import (VERSION, SECTION, BINARIES, MAINTAINER, FAKESRC,
SOURCE, SOURCEVER, ARCHITECTURE, DEPENDS, CONFLICTS,
PROVIDES, RDEPENDS, RCONFLICTS)
@ -2237,7 +2237,7 @@ class Britney(object):
skipped.append(pkg)
single_undo = [(undo, item)]
# (local-scope) binaries is actually self.binaries["testing"] so we cannot use it here.
self.undo_changes(single_undo, systems, sources, self.binaries)
undo_changes(single_undo, systems, sources, self.binaries)
# if we are processing hints, return now
if hint:
@ -2338,75 +2338,7 @@ class Britney(object):
if not lundo: return
lundo.reverse()
self.undo_changes(lundo, self.systems, self.sources, self.binaries)
def undo_changes(self, lundo, systems, sources, binaries):
"""Undoes one or more changes to testing
* lundo is a list of (undo, item)-tuples
* systems is the britney-py.c system
* sources is the table of all source packages for all suites
* binaries is the table of all binary packages for all suites
and architectures
"""
# We do the undo process in "4 steps" and each step must be
# fully completed for each undo-item before starting on the
# next.
#
# see commit:ef71f0e33a7c3d8ef223ec9ad5e9843777e68133 and
# #624716 for the issues we had when we did not do this.
# STEP 1
# undo all the changes for sources
for (undo, item) in lundo:
for k in undo['sources'].keys():
if k[0] == '-':
del sources["testing"][k[1:]]
else:
sources["testing"][k] = undo['sources'][k]
# STEP 2
# undo all new binaries (consequence of the above)
for (undo, item) in lundo:
if not item.is_removal and item.package in sources[item.suite]:
for p in sources[item.suite][item.package][BINARIES]:
binary, arch = p.split("/")
if item.architecture in ['source', arch]:
del binaries["testing"][arch][0][binary]
systems[arch].remove_binary(binary)
# STEP 3
# undo all other binary package changes (except virtual packages)
for (undo, item) in lundo:
for p in undo['binaries'].keys():
binary, arch = p.split("/")
if binary[0] == "-":
del binaries['testing'][arch][0][binary[1:]]
systems[arch].remove_binary(binary[1:])
else:
binaries_t_a = binaries['testing'][arch][0]
binaries_t_a[binary] = undo['binaries'][p]
systems[arch].remove_binary(binary)
systems[arch].add_binary(binary, binaries_t_a[binary][:PROVIDES] + \
[", ".join(binaries_t_a[binary][PROVIDES]) or None])
# STEP 4
# undo all changes to virtual packages
for (undo, item) in lundo:
for p in undo['nvirtual']:
j, arch = p.split("/")
del binaries['testing'][arch][1][j]
for p in undo['virtual']:
j, arch = p.split("/")
if j[0] == '-':
del binaries['testing'][arch][1][j[1:]]
else:
binaries['testing'][arch][1][j] = undo['virtual'][p]
undo_changes(lundo, self.systems, self.sources, self.binaries)

72
britney_util.py
View File

@ -17,6 +17,7 @@
# GNU General Public License for more details.
import re
from consts import BINARIES, PROVIDES
binnmu_re = re.compile(r'^(.*)\+b\d+$')
@ -41,3 +42,74 @@ def same_source(sv1, sv2, binnmu_re=binnmu_re):
return 1
return 0
def undo_changes(lundo, systems, sources, binaries,
BINARIES=BINARIES, PROVIDES=PROVIDES):
"""Undoes one or more changes to testing
* lundo is a list of (undo, item)-tuples
* systems is the britney-py.c system
* sources is the table of all source packages for all suites
* binaries is the table of all binary packages for all suites
and architectures
The "X=X" parameters are optimizations to avoid "load global"
in loops.
"""
# We do the undo process in "4 steps" and each step must be
# fully completed for each undo-item before starting on the
# next.
#
# see commit:ef71f0e33a7c3d8ef223ec9ad5e9843777e68133 and
# #624716 for the issues we had when we did not do this.
# STEP 1
# undo all the changes for sources
for (undo, item) in lundo:
for k in undo['sources']:
if k[0] == '-':
del sources["testing"][k[1:]]
else:
sources["testing"][k] = undo['sources'][k]
# STEP 2
# undo all new binaries (consequence of the above)
for (undo, item) in lundo:
if not item.is_removal and item.package in sources[item.suite]:
for p in sources[item.suite][item.package][BINARIES]:
binary, arch = p.split("/")
if item.architecture in ['source', arch]:
del binaries["testing"][arch][0][binary]
systems[arch].remove_binary(binary)
# STEP 3
# undo all other binary package changes (except virtual packages)
for (undo, item) in lundo:
for p in undo['binaries']:
binary, arch = p.split("/")
if binary[0] == "-":
del binaries['testing'][arch][0][binary[1:]]
systems[arch].remove_binary(binary[1:])
else:
binaries_t_a = binaries['testing'][arch][0]
binaries_t_a[binary] = undo['binaries'][p]
systems[arch].remove_binary(binary)
systems[arch].add_binary(binary, binaries_t_a[binary][:PROVIDES] + \
[", ".join(binaries_t_a[binary][PROVIDES]) or None])
# STEP 4
# undo all changes to virtual packages
for (undo, item) in lundo:
for p in undo['nvirtual']:
j, arch = p.split("/")
del binaries['testing'][arch][1][j]
for p in undo['virtual']:
j, arch = p.split("/")
if j[0] == '-':
del binaries['testing'][arch][1][j[1:]]
else:
binaries['testing'][arch][1][j] = undo['virtual'][p]