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britney2-ubuntu
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bzr-import-20160707
Fabio Tranchitella 19 years ago
parent b57aefed68
commit 1f9ba4410c
2 changed files with 221 additions and 187 deletions
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5
TODO
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@ -1,4 +1,7 @@
# Conflicts: work, we should try to solve the problem in a smarter way (without computing the full closed graph)
# TODO:
# Add support for old libraries (introducing a new operation: remove single binary)
# Add support for udeb
# DONE:
# Conflicts: work, we should try to solve the problem in a smarter way (without computing the full closed graph)
# Add support for calling britney from command line

403
britney.py
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@ -435,7 +435,7 @@ class Britney:
if a[0] in packages and (not check_doubles or pkg not in packages[a[0]]['rdepends']):
packages[a[0]]['rdepends'].append(pkg)
elif a[0] in provides:
for i in provides[a[0]]:
for i in provides.get(a[0]):
if i not in packages: continue
if not check_doubles or pkg not in packages[i]['rdepends']:
packages[i]['rdepends'].append(pkg)
@ -734,26 +734,24 @@ class Britney:
# for every package, version and operation in the block
for name, version, op in block:
# look for the package in unstable
if name in binaries[0] and name not in excluded:
if name not in excluded and name in binaries[0]:
package = binaries[0][name]
# check the versioned dependency (if present)
if op == '' and version == '' or apt_pkg.CheckDep(package['version'], op, version):
packages.append(name)
# look for the package in the virtual packages list
if name in binaries[1]:
# loop on the list of packages which provides it
for prov in binaries[1][name]:
if prov in excluded or \
prov not in binaries[0]: continue
package = binaries[0][prov]
# check the versioned dependency (if present)
# TODO: this is forbidden by the debian policy, which says that versioned
# dependencies on virtual packages are never satisfied. The old britney
# does it and we have to go with it, but at least a warning should be raised.
if op == '' and version == '' or not strict and apt_pkg.CheckDep(package['version'], op, version):
packages.append(prov)
break
# look for the package in the virtual packages list and loop on them
for prov in binaries[1].get(name, []):
if prov in excluded or \
prov not in binaries[0]: continue
package = binaries[0][prov]
# check the versioned dependency (if present)
# TODO: this is forbidden by the debian policy, which says that versioned
# dependencies on virtual packages are never satisfied. The old britney
# does it and we have to go with it, but at least a warning should be raised.
if op == '' and version == '' or not strict and apt_pkg.CheckDep(package['version'], op, version):
packages.append(prov)
break
return (len(packages) > 0, packages)
@ -786,8 +784,6 @@ class Britney:
# if the block is satisfied in testing, then skip the block
solved, packages = get_dependency_solvers(block, arch, 'testing', excluded, strict=(excuse == None))
if solved: continue
elif excuse == None:
return False
# check if the block can be satisfied in unstable, and list the solving packages
solved, packages = get_dependency_solvers(block, arch, suite)
@ -808,142 +804,8 @@ class Britney:
else:
excuse.add_break_dep(p, arch)
# otherwise, the package is installable (not considering conflicts)
# if we have been called inside UpgradeRun, then check conflicts before
# saying that the package is really installable
if not excuse and conflicts:
return self.check_conflicts(pkg, arch, {}, {})
return True
def check_conflicts(self, pkg, arch, system, conflicts):
# local copies for better performances
binaries = self.binaries['testing'][arch]
parse_depends = apt_pkg.ParseDepends
check_depends = apt_pkg.CheckDep
# unregister conflicts
def unregister_conflicts(pkg, conflicts):
for c in conflicts.keys():
if conflicts[c][3] == pkg:
del conflicts[c]
# try to remove the offeding package
def handle_conflict(pkg, source, system, conflicts):
# reached the top of the tree
if not system[source][1]:
return False
# remove its conflicts
unregister_conflicts(source, conflicts)
# if there are alternatives, try them
alternatives = system[source][0]
for alt in alternatives:
if satisfy(alt, [x for x in alternatives if x != alt], pkg_from=system[source][1],
system=system, conflicts=conflicts, excluded=[source]):
return (system, conflicts)
# there are no alternatives, so remove the package which depends on it
return handle_conflict(pkg, system[source][1], system, conflicts)
# try to satisfy the dependency tree
def satisfy(pkg, pkg_alt=None, pkg_from=None, system=system, conflicts=conflicts, excluded=[]):
# real package
if pkg in binaries[0]:
binary_u = binaries[0][pkg]
if pkg in system:
return True
else: binary_u = None
# virtual package
providers = []
if pkg in binaries[1]:
providers = binaries[1][pkg]
if binary_u:
providers = filter(lambda x: (not pkg_alt or x not in pkg_alt) and x != pkg, providers)
if not pkg_alt:
pkg_alt = []
pkg_alt.extend(providers)
else:
if len(filter(lambda x: x in providers and x not in excluded, system)) > 0:
return True
for p in providers:
if p in excluded: continue
elif satisfy(p, [a for a in providers if a != p], pkg_from):
return True
return False
# missing package
if not binary_u: return False
# add the package to the system
system[pkg] = (pkg_alt, pkg_from)
# register provided packages
if binary_u['provides']:
for p in binary_u['provides']:
system[p] = ([], pkg)
# check the conflicts
if pkg in conflicts:
name, version, op, conflicting = conflicts[pkg]
if conflicting not in binary_u['provides'] and ( \
op == '' and version == '' or check_depends(binary_u['version'], op, version)):
output = handle_conflict(pkg, conflicting, system.copy(), conflicts.copy())
if output:
system, conflicts = output
else:
del system[pkg]
return False
# register conflicts
if 'conflicts' in binary_u:
for block in map(operator.itemgetter(0), parse_depends(binary_u['conflicts'])):
name, version, op = block
if name in binary_u['provides']: continue
if block[0] != pkg and block[0] in system:
if block[0] in binaries[0]:
binary_c = binaries[0][block[0]]
else: binary_c = None
if op == '' and version == '' or binary_c and check_depends(binary_c['version'], op, version):
output = handle_conflict(name, pkg, system.copy(), conflicts.copy())
if output:
system, conflicts = output
else:
del system[pkg]
unregister_conflicts(pkg, conflicts)
return False
# FIXME: what if more than one package conflicts with it???
conflicts[block[0]] = (name, version, op, pkg)
# its dependencies
dependencies = []
for type in ('pre-depends', 'depends'):
if type not in binary_u: continue
dependencies.extend(parse_depends(binary_u[type]))
# go through them
for block in dependencies:
alternatives = map(operator.itemgetter(0), block)
valid = False
for name, version, op in block:
if name in system or satisfy(name, [a for a in alternatives if a != name], pkg):
valid = True
break
if not valid:
del system[pkg]
unregister_conflicts(pkg, conflicts)
for p in providers:
if satisfy(p, [a for a in providers if a != p], pkg_from):
return True
return False
return True
# check the package at the top of the tree
return satisfy(pkg)
# Package analisys methods
# ------------------------
@ -1462,7 +1324,7 @@ class Britney:
# local copies for better performances
binaries = self.binaries['testing']
excuse_unsat_deps = self.excuse_unsat_deps
check_installable = self.check_installable
def add_nuninst(pkg, arch):
if pkg not in nuninst[arch]:
@ -1471,7 +1333,7 @@ class Britney:
tpkg = binaries[arch][0][p]
if skip_archall and tpkg['architecture'] == 'all':
continue
r = excuse_unsat_deps(p, None, arch, 'testing', None, excluded=nuninst[arch], conflicts=False)
r = check_installable(p, arch, 'testing', excluded=nuninst[arch], conflicts=False)
if not r:
add_nuninst(p, arch)
@ -1485,7 +1347,7 @@ class Britney:
pkg = binaries[arch][0][pkg_name]
if skip_archall and pkg['architecture'] == 'all':
continue
r = excuse_unsat_deps(pkg_name, None, arch, 'testing', None, excluded=nuninst[arch], conflicts=False)
r = check_installable(pkg_name, arch, 'testing', excluded=nuninst[arch], conflicts=False)
if not r:
add_nuninst(pkg_name, arch)
@ -1516,6 +1378,171 @@ class Britney:
", ".join(sorted(nuninst[arch])))
return res
def check_installable(self, pkg, arch, suite, excluded=[], conflicts=False):
"""Check if a package is installable
This method analyzes the dependencies of the binary package specified
by the parameter `pkg' for the architecture `arch' within the suite
`suite'. If the dependency can be satisfied in the given `suite`,
then the co-installability with conflicts handling is checked, too.
The dependency fields checked are Pre-Depends and Depends.
"""
# retrieve the binary package from the specified suite and arch
binary_u = self.binaries[suite][arch][0][pkg]
# local copies for better performances
parse_depends = apt_pkg.ParseDepends
get_dependency_solvers = self.get_dependency_solvers
# analyze the dependency fields (if present)
for type in ('pre-depends', 'depends'):
if type not in binary_u:
continue
# for every block of dependency (which is formed as conjunction of disconjunction)
for block in parse_depends(binary_u[type]):
# if the block is satisfied in testing, then skip the block
solved, packages = get_dependency_solvers(block, arch, 'testing', excluded, strict=True)
if solved: continue
else:
return False
# otherwise, the package is installable (not considering conflicts)
# if we have been called inside UpgradeRun, then check conflicts before
# saying that the package is really installable
if conflicts:
return self.check_conflicts(pkg, arch, {}, {})
return True
def check_conflicts(self, pkg, arch, system, conflicts):
# local copies for better performances
binaries = self.binaries['testing'][arch]
parse_depends = apt_pkg.ParseDepends
check_depends = apt_pkg.CheckDep
# unregister conflicts
def unregister_conflicts(pkg, conflicts):
for c in conflicts.keys():
if conflicts[c][3] == pkg:
del conflicts[c]
# try to remove the offeding package
def handle_conflict(pkg, source, system, conflicts):
# reached the top of the tree
if not system[source][1]:
return False
# remove its conflicts
unregister_conflicts(source, conflicts)
# if there are alternatives, try them
alternatives = system[source][0]
for alt in alternatives:
if satisfy(alt, [x for x in alternatives if x != alt], pkg_from=system[source][1],
system=system, conflicts=conflicts, excluded=[source]):
return (system, conflicts)
# there are no alternatives, so remove the package which depends on it
return handle_conflict(pkg, system[source][1], system, conflicts)
# try to satisfy the dependency tree
def satisfy(pkg, pkg_alt=None, pkg_from=None, system=system, conflicts=conflicts, excluded=[]):
# real package
if pkg in binaries[0]:
binary_u = binaries[0][pkg]
if pkg in system:
return True
else: binary_u = None
# virtual package
providers = []
if pkg in binaries[1]:
providers = binaries[1][pkg]
if binary_u:
providers = filter(lambda x: (not pkg_alt or x not in pkg_alt) and x != pkg, providers)
if not pkg_alt:
pkg_alt = []
pkg_alt.extend(providers)
else:
if len(filter(lambda x: x in providers and x not in excluded, system)) > 0:
return True
for p in providers:
if p in excluded: continue
elif satisfy(p, [a for a in providers if a != p], pkg_from):
return True
return False
# missing package
if not binary_u: return False
# add the package to the system
system[pkg] = (pkg_alt, pkg_from)
# register provided packages
if binary_u['provides']:
for p in binary_u['provides']:
system[p] = ([], pkg)
# check the conflicts
if pkg in conflicts:
name, version, op, conflicting = conflicts[pkg]
if conflicting not in binary_u['provides'] and ( \
op == '' and version == '' or check_depends(binary_u['version'], op, version)):
output = handle_conflict(pkg, conflicting, system.copy(), conflicts.copy())
if output:
system, conflicts = output
else:
del system[pkg]
return False
# register conflicts
if 'conflicts' in binary_u:
for block in map(operator.itemgetter(0), parse_depends(binary_u.get('conflicts', []))):
name, version, op = block
if name in binary_u['provides']: continue
if block[0] != pkg and block[0] in system:
if block[0] in binaries[0]:
binary_c = binaries[0][block[0]]
else: binary_c = None
if op == '' and version == '' or binary_c and check_depends(binary_c['version'], op, version):
output = handle_conflict(name, pkg, system.copy(), conflicts.copy())
if output:
system, conflicts = output
else:
del system[pkg]
unregister_conflicts(pkg, conflicts)
return False
# FIXME: what if more than one package conflicts with it???
conflicts[block[0]] = (name, version, op, pkg)
# its dependencies
dependencies = []
for type in ('pre-depends', 'depends'):
if type not in binary_u: continue
dependencies.extend(parse_depends(binary_u[type]))
# go through them
for block in dependencies:
alternatives = map(operator.itemgetter(0), block)
valid = False
for name, version, op in block:
if name in system or satisfy(name, [a for a in alternatives if a != name], pkg):
valid = True
break
if not valid:
del system[pkg]
unregister_conflicts(pkg, conflicts)
for p in providers:
if satisfy(p, [a for a in providers if a != p], pkg_from):
return True
return False
return True
# check the package at the top of the tree
return satisfy(pkg)
def doop_source(self, pkg):
undo = {'binaries': {}, 'sources': {}, 'virtual': {}, 'nvirtual': []}
@ -1523,6 +1550,10 @@ class Britney:
affected = []
arch = None
# local copies for better performances
sources = self.sources
binaries = self.binaries['testing']
# arch = "<source>/<arch>",
if "/" in pkg:
pkg_name, arch = pkg.split("/")
@ -1542,67 +1573,67 @@ class Britney:
# remove all binary packages (if the source already exists)
if not arch:
if pkg_name in self.sources['testing']:
source = self.sources['testing'][pkg_name]
if pkg_name in sources['testing']:
source = sources['testing'][pkg_name]
for p in source['binaries']:
binary, arch = p.split("/")
undo['binaries'][p] = self.binaries['testing'][arch][0][binary]
for j in self.binaries['testing'][arch][0][binary]['rdepends']:
undo['binaries'][p] = binaries[arch][0][binary]
for j in binaries[arch][0][binary]['rdepends']:
key = (j, arch)
if key not in affected: affected.append(key)
for j in self.binaries['testing'][arch][0][binary]['provides']:
for j in binaries[arch][0][binary]['provides']:
if j + "/" + arch not in undo['virtual']:
undo['virtual'][j + "/" + arch] = self.binaries['testing'][arch][1][j][:]
self.binaries['testing'][arch][1][j].remove(binary)
if len(self.binaries['testing'][arch][1][j]) == 0:
del self.binaries['testing'][arch][1][j]
del self.binaries['testing'][arch][0][binary]
undo['virtual'][j + "/" + arch] = binaries[arch][1][j][:]
binaries[arch][1][j].remove(binary)
if len(binaries[arch][1][j]) == 0:
del binaries[arch][1][j]
del binaries[arch][0][binary]
undo['sources'][pkg_name] = source
del self.sources['testing'][pkg_name]
del sources['testing'][pkg_name]
else:
undo['sources']['-' + pkg_name] = True
# single architecture update (eg. binNMU)
else:
if pkg_name in self.binaries['testing'][arch][0]:
for j in self.binaries['testing'][arch][0][pkg_name]['rdepends']:
if pkg_name in binaries[arch][0]:
for j in binaries[arch][0][pkg_name]['rdepends']:
key = (j, arch)
if key not in affected: affected.append(key)
source = {'binaries': [pkg]}
# add the new binary packages (if we are not removing)
if pkg[0] != "-":
source = self.sources[suite][pkg_name]
source = sources[suite][pkg_name]
for p in source['binaries']:
binary, arch = p.split("/")
key = (binary, arch)
if key not in affected: affected.append(key)
if binary in self.binaries['testing'][arch][0]:
undo['binaries'][p] = self.binaries['testing'][arch][0][binary]
for j in self.binaries['testing'][arch][0][binary]['rdepends']:
if binary in binaries[arch][0]:
undo['binaries'][p] = binaries[arch][0][binary]
for j in binaries[arch][0][binary]['rdepends']:
key = (j, arch)
if key not in affected: affected.append(key)
for j in self.binaries['testing'][arch][0][binary]['rconflicts']:
for j in binaries[arch][0][binary]['rconflicts']:
key = (j, arch)
if key not in affected: affected.append(key)
for p in self.get_full_tree(j, arch, 'testing'):
key = (p, arch)
if key not in affected: affected.append(key)
self.binaries['testing'][arch][0][binary] = self.binaries[suite][arch][0][binary]
for j in self.binaries['testing'][arch][0][binary]['provides']:
if j not in self.binaries['testing'][arch][1]:
binaries[arch][0][binary] = self.binaries[suite][arch][0][binary]
for j in binaries[arch][0][binary]['provides']:
if j not in binaries[arch][1]:
undo['nvirtual'].append(j + "/" + arch)
self.binaries['testing'][arch][1][j] = []
binaries[arch][1][j] = []
elif j + "/" + arch not in undo['virtual']:
undo['virtual'][j + "/" + arch] = self.binaries['testing'][arch][1][j][:]
self.binaries['testing'][arch][1][j].append(binary)
for j in self.binaries['testing'][arch][0][binary]['rdepends']:
undo['virtual'][j + "/" + arch] = binaries[arch][1][j][:]
binaries[arch][1][j].append(binary)
for j in binaries[arch][0][binary]['rdepends']:
key = (j, arch)
if key not in affected: affected.append(key)
for p in source['binaries']:
binary, arch = p.split("/")
self.register_reverses(binary, self.binaries['testing'][arch][0] , self.binaries['testing'][arch][1])
self.sources['testing'][pkg_name] = self.sources[suite][pkg_name]
self.register_reverses(binary, binaries[arch][0] , binaries[arch][1])
sources['testing'][pkg_name] = sources[suite][pkg_name]
return (pkg_name, suite, affected, undo)
@ -1622,7 +1653,7 @@ class Britney:
nuninst_comp = self.get_nuninst()
# local copies for better performances
excuse_unsat_deps = self.excuse_unsat_deps
check_installable = self.check_installable
binaries = self.binaries['testing']
sources = self.sources
architectures = self.options.architectures
@ -1656,7 +1687,7 @@ class Britney:
for p in to_check:
if p not in binaries[arch][0] or \
skip_archall and binaries[arch][0][p]['architecture'] == 'all': continue
r = excuse_unsat_deps(p, None, arch, 'testing', None, excluded=broken, conflicts=True)
r = check_installable(p, arch, 'testing', excluded=broken, conflicts=True)
if not r and p not in broken:
broken.append(p)
elif r and p in nuninst[arch]:
@ -1669,9 +1700,9 @@ class Britney:
for j in broken:
if j not in binaries[arch][0]: continue
for p in binaries[arch][0][j]['rdepends']:
if p not in binaries[arch][0] or \
if p in broken or p not in binaries[arch][0] or \
skip_archall and binaries[arch][0][p]['architecture'] == 'all': continue
r = excuse_unsat_deps(p, None, arch, 'testing', None, excluded=broken, conflicts=True)
r = check_installable(p, arch, 'testing', excluded=broken, conflicts=True)
if not r and p not in broken:
broken.append(p)

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