it rocks your world, baby.
svn path=/main/branches/2.0/; revision=2257
--- /dev/null
+# Copyright: 2005 Gentoo Foundation
+# Author(s): Brian Harring (ferringb@gentoo.org)
+# License: GPL2
+# $Id: __init__.py 1911 2005-08-25 03:44:21Z ferringb $
+
--- /dev/null
+# Copyright: 2005 Gentoo Foundation
+# Author(s): Brian Harring (ferringb@gentoo.org)
+# License: GPL2
+# $Id: anydbm.py 1911 2005-08-25 03:44:21Z ferringb $
+
+anydbm_module = __import__("anydbm")
+try:
+ import cPickle as pickle
+except ImportError:
+ import pickle
+import os
+import fs_template
+import cache_errors
+
+
+class database(fs_template.FsBased):
+
+ autocommits = True
+ cleanse_keys = True
+
+ def __init__(self, *args, **config):
+ super(database,self).__init__(*args, **config)
+
+ default_db = config.get("dbtype","anydbm")
+ if not default_db.startswith("."):
+ default_db = '.' + default_db
+
+ self._db_path = os.path.join(self.location, fs_template.gen_label(self.location, self.label)+default_db)
+ self.__db = None
+ try:
+ self.__db = anydbm_module.open(self._db_path, "w", self._perms)
+
+ except anydbm_module.error:
+ # XXX handle this at some point
+ try:
+ self._ensure_dirs()
+ self._ensure_dirs(self._db_path)
+ self._ensure_access(self._db_path)
+ except (OSError, IOError), e:
+ raise cache_errors.InitializationError(self.__class__, e)
+
+ # try again if failed
+ try:
+ if self.__db == None:
+ self.__db = anydbm_module.open(self._db_path, "c", self._perms)
+ except andbm_module.error, e:
+ raise cache_errors.InitializationError(self.__class__, e)
+
+ def iteritems(self):
+ return self.__db.iteritems()
+
+ def __getitem__(self, cpv):
+ # we override getitem because it's just a cpickling of the data handed in.
+ return pickle.loads(self.__db[cpv])
+
+
+ def _setitem(self, cpv, values):
+ self.__db[cpv] = pickle.dumps(values,pickle.HIGHEST_PROTOCOL)
+
+ def _delitem(self, cpv):
+ del self.__db[cpv]
+
+
+ def iterkeys(self):
+ return iter(self.__db)
+
+
+ def has_key(self, cpv):
+ return cpv in self.__db
+
+
+ def __del__(self):
+ if "__db" in self.__dict__ and self.__db != None:
+ self.__db.sync()
+ self.__db.close()
--- /dev/null
+# Copyright: 2005 Gentoo Foundation
+# Author(s): Brian Harring (ferringb@gentoo.org)
+# License: GPL2
+# $Id: cache_errors.py 1911 2005-08-25 03:44:21Z ferringb $
+
+class CacheError(Exception): pass
+
+class InitializationError(CacheError):
+ def __init__(self, class_name, error):
+ self.error, self.class_name = error, class_name
+ def __str__(self):
+ return "Creation of instance %s failed due to %s" % \
+ (self.class_name, str(self.error))
+
+
+class CacheCorruption(CacheError):
+ def __init__(self, key, ex):
+ self.key, self.ex = key, ex
+ def __str__(self):
+ return "%s is corrupt: %s" % (self.key, str(self.ex))
+
+
+class GeneralCacheCorruption(CacheError):
+ def __init__(self,ex): self.ex = ex
+ def __str__(self): return "corruption detected: %s" % str(self.ex)
+
+
+class InvalidRestriction(CacheError):
+ def __init__(self, key, restriction, exception=None):
+ if exception == None: exception = ''
+ self.key, self.restriction, self.ex = key, restriction, ex
+ def __str__(self):
+ return "%s:%s is not valid: %s" % \
+ (self.key, self.restriction, str(self.ex))
+
+
+class ReadOnlyRestriction(CacheError):
+ def __init__(self, info=''):
+ self.info = info
+ def __str__(self):
+ return "cache is non-modifiable"+str(self.info)
--- /dev/null
+# Copyright: 2005 Gentoo Foundation
+# Author(s): Brian Harring (ferringb@gentoo.org)
+# License: GPL2
+# $Id: flat_list.py 1911 2005-08-25 03:44:21Z ferringb $
+
+import fs_template
+import cache_errors
+import os, stat
+from mappings import LazyLoad, ProtectedDict
+from template import reconstruct_eclasses
+# store the current key order *here*.
+class database(fs_template.FsBased):
+
+ autocommits = True
+
+ def __init__(self, *args, **config):
+ super(database,self).__init__(*args, **config)
+ self.location = os.path.join(self.location,
+ self.label.lstrip(os.path.sep).rstrip(os.path.sep))
+
+ if not os.path.exists(self.location):
+ self._ensure_dirs()
+
+ def __getitem__(self, cpv):
+ fp = os.path.join(self.location, cpv)
+ try:
+ def curry(*args):
+ def callit(*args2):
+ return args[0](*args[1:]+args2)
+ return callit
+ return ProtectedDict(LazyLoad(curry(self._pull, fp, cpv), initial_items=[("_mtime_", os.stat(fp).st_mtime)]))
+ except OSError:
+ raise KeyError(cpv)
+ return self._getitem(cpv)
+
+ def _pull(self, fp, cpv):
+ try:
+ myf = open(fp,"r")
+ except IOError:
+ raise KeyError(cpv)
+ except OSError, e:
+ raise cache_errors.CacheCorruption(cpv, e)
+ try:
+ d = self._parse_data(myf, cpv)
+ except (OSError, ValueError), e:
+ myf.close()
+ raise cache_errors.CacheCorruption(cpv, e)
+ myf.close()
+ return d
+
+
+ def _parse_data(self, data, cpv, mtime=0):
+ d = dict(map(lambda x:x.rstrip().split("=", 1), data))
+ if mtime != 0:
+ d["_mtime_"] = long(mtime)
+ if "_eclasses_" in d:
+ d["_eclasses_"] = reconstruct_eclasses(cpv, d["_eclasses_"])
+ return d
+
+ for x in self._known_keys:
+ if x not in d:
+ d[x] = ''
+
+
+ return d
+
+
+ def _setitem(self, cpv, values):
+# import pdb;pdb.set_trace()
+ s = cpv.rfind("/")
+ fp = os.path.join(self.location,cpv[:s],".update.%i.%s" % (os.getpid(), cpv[s+1:]))
+ try: myf=open(fp, "w")
+ except IOError, ie:
+ if ie.errno == 2:
+ try:
+ self._ensure_dirs(cpv)
+ myf=open(fp,"w")
+ except (OSError, IOError),e:
+ raise cache_errors.CacheCorruption(cpv, e)
+ except OSError, e:
+ raise cache_errors.CacheCorruption(cpv, e)
+
+ for k, v in values.items():
+ if k != "_mtime_":
+ myf.writelines("%s=%s\n" % (k, v))
+
+ myf.close()
+ self._ensure_access(fp, mtime=values["_mtime_"])
+
+ #update written. now we move it.
+
+ new_fp = os.path.join(self.location,cpv)
+ try: os.rename(fp, new_fp)
+ except (OSError, IOError), e:
+ os.remove(fp)
+ raise cache_errors.CacheCorruption(cpv, e)
+
+
+ def _delitem(self, cpv):
+# import pdb;pdb.set_trace()
+ try:
+ os.remove(os.path.join(self.location,cpv))
+ except OSError, e:
+ if e.errno == 2:
+ raise KeyError(cpv)
+ else:
+ raise cache_errors.CacheCorruption(cpv, e)
+
+
+ def has_key(self, cpv):
+ return os.path.exists(os.path.join(self.location, cpv))
+
+
+ def iterkeys(self):
+ """generator for walking the dir struct"""
+ dirs = [self.location]
+ len_base = len(self.location)
+ while len(dirs):
+ for l in os.listdir(dirs[0]):
+ if l.endswith(".cpickle"):
+ continue
+ p = os.path.join(dirs[0],l)
+ st = os.lstat(p)
+ if stat.S_ISDIR(st.st_mode):
+ dirs.append(p)
+ continue
+ yield p[len_base+1:]
+ dirs.pop(0)
+
--- /dev/null
+import fs_template
+import cache_errors
+import os, stat
+
+# store the current key order *here*.
+class database(fs_template.FsBased):
+
+ autocommits = True
+
+ # do not screw with this ordering. _eclasses_ needs to be last
+ auxdbkey_order=('DEPEND', 'RDEPEND', 'SLOT', 'SRC_URI',
+ 'RESTRICT', 'HOMEPAGE', 'LICENSE', 'DESCRIPTION',
+ 'KEYWORDS', 'IUSE', 'CDEPEND',
+ 'PDEPEND', 'PROVIDE','_eclasses_')
+
+ def __init__(self, label, auxdbkeys, **config):
+ super(database,self).__init__(label, auxdbkeys, **config)
+ self._base = os.path.join(self._base,
+ self.label.lstrip(os.path.sep).rstrip(os.path.sep))
+
+ if len(self._known_keys) > len(self.auxdbkey_order) + 2:
+ raise Exception("less ordered keys then auxdbkeys")
+ if not os.path.exists(self._base):
+ self._ensure_dirs()
+
+
+ def _getitem(self, cpv):
+ d = {}
+ try:
+ myf = open(os.path.join(self._base, cpv),"r")
+ for k,v in zip(self.auxdbkey_order, myf):
+ d[k] = v.rstrip("\n")
+ except (OSError, IOError),e:
+ if isinstance(e,IOError) and e.errno == 2:
+# print "caught for %s" % cpv, e
+# l=os.listdir(os.path.dirname(os.path.join(self._base,cpv)))
+# l.sort()
+# print l
+ raise KeyError(cpv)
+ raise cache_errors.CacheCorruption(cpv, e)
+
+ try: d["_mtime_"] = os.fstat(myf.fileno()).st_mtime
+ except OSError, e:
+ myf.close()
+ raise cache_errors.CacheCorruption(cpv, e)
+ myf.close()
+ return d
+
+
+ def _setitem(self, cpv, values):
+ s = cpv.rfind("/")
+ fp=os.path.join(self._base,cpv[:s],".update.%i.%s" % (os.getpid(), cpv[s+1:]))
+ try: myf=open(fp, "w")
+ except (OSError, IOError), e:
+ if e.errno == 2:
+ try:
+ self._ensure_dirs(cpv)
+ myf=open(fp,"w")
+ except (OSError, IOError),e:
+ raise cache_errors.CacheCorruption(cpv, e)
+ else:
+ raise cache_errors.CacheCorruption(cpv, e)
+
+
+ for x in self.auxdbkey_order:
+ myf.write(values.get(x,"")+"\n")
+
+ myf.close()
+ self._ensure_access(fp, mtime=values["_mtime_"])
+ #update written. now we move it.
+ new_fp = os.path.join(self._base,cpv)
+ try: os.rename(fp, new_fp)
+ except (OSError, IOError), e:
+ os.remove(fp)
+ raise cache_errors.CacheCorruption(cpv, e)
+
+
+ def _delitem(self, cpv):
+ try:
+ os.remove(os.path.join(self._base,cpv))
+ except OSError, e:
+ if e.errno == 2:
+ raise KeyError(cpv)
+ else:
+ raise cache_errors.CacheCorruption(cpv, e)
+
+
+ def has_key(self, cpv):
+ return os.path.exists(os.path.join(self._base, cpv))
+
+
+ def iterkeys(self):
+ """generator for walking the dir struct"""
+ dirs = [self._base]
+ len_base = len(self._base)
+ while len(dirs):
+ for l in os.listdir(dirs[0]):
+ if l.endswith(".cpickle"):
+ continue
+ p = os.path.join(dirs[0],l)
+ st = os.lstat(p)
+ if stat.S_ISDIR(st.st_mode):
+ dirs.append(p)
+ continue
+ yield p[len_base+1:]
+ dirs.pop(0)
+
+
+ def commit(self): pass
--- /dev/null
+# Copyright: 2005 Gentoo Foundation
+# Author(s): Brian Harring (ferringb@gentoo.org)
+# License: GPL2
+# $Id: fs_template.py 1911 2005-08-25 03:44:21Z ferringb $
+
+import os
+import template, cache_errors
+from portage_data import portage_gid
+
+class FsBased(template.database):
+ """template wrapping fs needed options, and providing _ensure_access as a way to
+ attempt to ensure files have the specified owners/perms"""
+
+ def __init__(self, *args, **config):
+ """throws InitializationError if needs args aren't specified
+ gid and perms aren't listed do to an oddity python currying mechanism
+ gid=portage_gid
+ perms=0665"""
+
+ for x,y in (("gid",portage_gid),("perms",0664)):
+ if x in config:
+ setattr(self, "_"+x, config[x])
+ del config[x]
+ else:
+ setattr(self, "_"+x, y)
+ super(FsBased, self).__init__(*args, **config)
+
+ if self.label.startswith(os.path.sep):
+ # normpath.
+ self.label = os.path.sep + os.path.normpath(self.label).lstrip(os.path.sep)
+
+
+ def _ensure_access(self, path, mtime=-1):
+ """returns true or false if it's able to ensure that path is properly chmod'd and chowned.
+ if mtime is specified, attempts to ensure that's correct also"""
+ try:
+ os.chown(path, -1, self._gid)
+ os.chmod(path, self._perms)
+ if mtime:
+ mtime=long(mtime)
+ os.utime(path, (mtime, mtime))
+ except OSError, IOError:
+ return False
+ return True
+
+ def _ensure_dirs(self, path=None):
+ """with path!=None, ensure beyond self.location. otherwise, ensure self.location"""
+ if path:
+ path = os.path.dirname(path)
+ base = self.location
+ else:
+ path = self.location
+ base='/'
+
+ for dir in path.lstrip(os.path.sep).rstrip(os.path.sep).split(os.path.sep):
+ base = os.path.join(base,dir)
+ if not os.path.exists(base):
+ um=os.umask(0)
+ try:
+ os.mkdir(base, self._perms | 0111)
+ os.chown(base, -1, self._gid)
+ finally:
+ os.umask(um)
+
+
+def gen_label(base, label):
+ """if supplied label is a path, generate a unique label based upon label, and supplied base path"""
+ if label.find(os.path.sep) == -1:
+ return label
+ label = label.strip("\"").strip("'")
+ label = os.path.join(*(label.rstrip(os.path.sep).split(os.path.sep)))
+ tail = os.path.split(label)[1]
+ return "%s-%X" % (tail, abs(label.__hash__()))
+
--- /dev/null
+# Copyright: 2005 Gentoo Foundation
+# Author(s): Brian Harring (ferringb@gentoo.org)
+# License: GPL2
+# $Id: mappings.py 2015 2005-09-20 23:14:26Z ferringb $
+
+import UserDict
+
+class ProtectedDict(UserDict.DictMixin):
+ """
+ given an initial dict, this wraps that dict storing changes in a secondary dict, protecting
+ the underlying dict from changes
+ """
+ __slots__=("orig","new","blacklist")
+
+ def __init__(self, orig):
+ self.orig = orig
+ self.new = {}
+ self.blacklist = {}
+
+
+ def __setitem__(self, key, val):
+ self.new[key] = val
+ if key in self.blacklist:
+ del self.blacklist[key]
+
+
+ def __getitem__(self, key):
+ if key in self.new:
+ return self.new[key]
+ if key in self.blacklist:
+ raise KeyError(key)
+ return self.orig[key]
+
+
+ def __delitem__(self, key):
+ if key in self.new:
+ del self.new[key]
+ elif key in self.orig:
+ if key not in self.blacklist:
+ self.blacklist[key] = True
+ return
+ raise KeyError(key)
+
+
+ def __iter__(self):
+ for k in self.new.iterkeys():
+ yield k
+ for k in self.orig.iterkeys():
+ if k not in self.blacklist and k not in self.new:
+ yield k
+
+
+ def keys(self):
+ return list(self.__iter__())
+
+
+ def has_key(self, key):
+ return key in self.new or (key not in self.blacklist and key in self.orig)
+
+
+class LazyLoad(UserDict.DictMixin):
+ """
+ Lazy loading of values for a dict
+ """
+ __slots__=("pull", "d")
+
+ def __init__(self, pull_items_func, initial_items=[]):
+ self.d = {}
+ for k, v in initial_items:
+ self.d[k] = v
+ self.pull = pull_items_func
+
+ def __getitem__(self, key):
+ if key in self.d:
+ return self.d[key]
+ elif self.pull != None:
+ self.d.update(self.pull())
+ self.pull = None
+ return self.d[key]
+
+
+ def __iter__(self):
+ return iter(self.keys())
+
+ def keys(self):
+ if self.pull != None:
+ self.d.update(self.pull())
+ self.pull = None
+ return self.d.keys()
+
+
+ def has_key(self, key):
+ return key in self
+
+
+ def __contains__(self, key):
+ if key in self.d:
+ return True
+ elif self.pull != None:
+ self.d.update(self.pull())
+ self.pull = None
+ return key in self.d
+
--- /dev/null
+# Copyright: 2005 Gentoo Foundation
+# Author(s): Brian Harring (ferringb@gentoo.org)
+# License: GPL2
+# $Id: metadata.py 1964 2005-09-03 00:16:16Z ferringb $
+
+import os, stat
+import flat_hash
+import cache_errors
+import eclass_cache
+from template import reconstruct_eclasses, serialize_eclasses
+from mappings import ProtectedDict, LazyLoad
+
+# this is the old cache format, flat_list. count maintained here.
+magic_line_count = 22
+
+# store the current key order *here*.
+class database(flat_hash.database):
+ complete_eclass_entries = False
+ auxdbkey_order=('DEPEND', 'RDEPEND', 'SLOT', 'SRC_URI',
+ 'RESTRICT', 'HOMEPAGE', 'LICENSE', 'DESCRIPTION',
+ 'KEYWORDS', 'INHERITED', 'IUSE', 'CDEPEND',
+ 'PDEPEND', 'PROVIDE', 'EAPI')
+
+ autocommits = True
+
+ def __init__(self, location, *args, **config):
+ loc = location
+ super(database, self).__init__(location, *args, **config)
+ self.location = os.path.join(loc, "metadata","cache")
+ self.ec = eclass_cache.cache(loc)
+
+ def __getitem__(self, cpv):
+ return flat_hash.database.__getitem__(self, cpv)
+
+
+ def _parse_data(self, data, mtime):
+ # easy attempt first.
+ data = list(data)
+ if len(data) != magic_line_count:
+ d = flat_hash.database._parse_data(self, data, mtime)
+ else:
+ # this one's interesting.
+ d = {}
+
+ for line in data:
+ # yes, meant to iterate over a string.
+ hashed = False
+ # poor mans enumerate. replace when python 2.3 is required
+ for idx, c in zip(range(len(line)), line):
+ if not c.isalpha():
+ if c == "=" and idx > 0:
+ hashed = True
+ d[line[:idx]] = line[idx + 1:]
+ elif c == "_" or c.isdigit():
+ continue
+ break
+ elif not c.isupper():
+ break
+
+ if not hashed:
+ # non hashed.
+ d.clear()
+ # poor mans enumerate. replace when python 2.3 is required
+ for idx, key in zip(range(len(self.auxdbkey_order)), self.auxdbkey_order):
+ d[key] = data[idx].strip()
+ break
+
+ if "_eclasses_" not in d:
+ if "INHERITED" in d:
+ d["_eclasses_"] = self.ec.get_eclass_data(d["INHERITED"].split(), from_master_only=True)
+ del d["INHERITED"]
+ else:
+ d["_eclasses_"] = reconstruct_eclasses(cpv, d["_eclasses_"])
+
+ return d
+
+
+
+ def _setitem(self, cpv, values):
+ values = ProtectedDict(values)
+
+ # hack. proper solution is to make this a __setitem__ override, since template.__setitem__
+ # serializes _eclasses_, then we reconstruct it.
+ if "_eclasses_" in values:
+ values["INHERITED"] = ' '.join(reconstruct_eclasses(cpv, values["_eclasses_"]).keys())
+ del values["_eclasses_"]
+
+ flat_hash.database._setitem(self, cpv, values)
--- /dev/null
+# Copyright: 2005 Gentoo Foundation
+# Author(s): Brian Harring (ferringb@gentoo.org)
+# License: GPL2
+# $Id: sql_template.py 1911 2005-08-25 03:44:21Z ferringb $
+
+import template, cache_errors
+from template import reconstruct_eclasses
+
+class SQLDatabase(template.database):
+ """template class for RDBM based caches
+
+ This class is designed such that derivatives don't have to change much code, mostly constant strings.
+ _BaseError must be an exception class that all Exceptions thrown from the derived RDBMS are derived
+ from.
+
+ SCHEMA_INSERT_CPV_INTO_PACKAGE should be modified dependant on the RDBMS, as should SCHEMA_PACKAGE_CREATE-
+ basically you need to deal with creation of a unique pkgid. If the dbapi2 rdbms class has a method of
+ recovering that id, then modify _insert_cpv to remove the extra select.
+
+ Creation of a derived class involves supplying _initdb_con, and table_exists.
+ Additionally, the default schemas may have to be modified.
+ """
+
+ SCHEMA_PACKAGE_NAME = "package_cache"
+ SCHEMA_PACKAGE_CREATE = "CREATE TABLE %s (\
+ pkgid INTEGER PRIMARY KEY, label VARCHAR(255), cpv VARCHAR(255), UNIQUE(label, cpv))" % SCHEMA_PACKAGE_NAME
+ SCHEMA_PACKAGE_DROP = "DROP TABLE %s" % SCHEMA_PACKAGE_NAME
+
+ SCHEMA_VALUES_NAME = "values_cache"
+ SCHEMA_VALUES_CREATE = "CREATE TABLE %s ( pkgid integer references %s (pkgid) on delete cascade, \
+ key varchar(255), value text, UNIQUE(pkgid, key))" % (SCHEMA_VALUES_NAME, SCHEMA_PACKAGE_NAME)
+ SCHEMA_VALUES_DROP = "DROP TABLE %s" % SCHEMA_VALUES_NAME
+ SCHEMA_INSERT_CPV_INTO_PACKAGE = "INSERT INTO %s (label, cpv) VALUES(%%s, %%s)" % SCHEMA_PACKAGE_NAME
+
+ _BaseError = ()
+ _dbClass = None
+
+ autocommits = False
+# cleanse_keys = True
+
+ # boolean indicating if the derived RDBMS class supports replace syntax
+ _supports_replace = False
+
+ def __init__(self, location, label, auxdbkeys, *args, **config):
+ """initialize the instance.
+ derived classes shouldn't need to override this"""
+
+ super(SQLDatabase, self).__init__(location, label, auxdbkeys, *args, **config)
+
+ config.setdefault("host","127.0.0.1")
+ config.setdefault("autocommit", self.autocommits)
+ self._initdb_con(config)
+
+ self.label = self._sfilter(self.label)
+
+
+ def _dbconnect(self, config):
+ """should be overridden if the derived class needs special parameters for initializing
+ the db connection, or cursor"""
+ self.db = self._dbClass(**config)
+ self.con = self.db.cursor()
+
+
+ def _initdb_con(self,config):
+ """ensure needed tables are in place.
+ If the derived class needs a different set of table creation commands, overload the approriate
+ SCHEMA_ attributes. If it needs additional execution beyond, override"""
+
+ self._dbconnect(config)
+ if not self._table_exists(self.SCHEMA_PACKAGE_NAME):
+ if self.readonly:
+ raise cache_errors.ReadOnlyRestriction("table %s doesn't exist" % \
+ self.SCHEMA_PACKAGE_NAME)
+ try: self.con.execute(self.SCHEMA_PACKAGE_CREATE)
+ except self._BaseError, e:
+ raise cache_errors.InitializationError(self.__class__, e)
+
+ if not self._table_exists(self.SCHEMA_VALUES_NAME):
+ if self.readonly:
+ raise cache_errors.ReadOnlyRestriction("table %s doesn't exist" % \
+ self.SCHEMA_VALUES_NAME)
+ try: self.con.execute(self.SCHEMA_VALUES_CREATE)
+ except self._BaseError, e:
+ raise cache_errors.InitializationError(self.__class__, e)
+
+
+ def _table_exists(self, tbl):
+ """return true if a table exists
+ derived classes must override this"""
+ raise NotImplementedError
+
+
+ def _sfilter(self, s):
+ """meta escaping, returns quoted string for use in sql statements"""
+ return "\"%s\"" % s.replace("\\","\\\\").replace("\"","\\\"")
+
+
+ def _getitem(self, cpv):
+ try: self.con.execute("SELECT key, value FROM %s NATURAL JOIN %s "
+ "WHERE label=%s AND cpv=%s" % (self.SCHEMA_PACKAGE_NAME, self.SCHEMA_VALUES_NAME,
+ self.label, self._sfilter(cpv)))
+ except self._BaseError, e:
+ raise cache_errors.CacheCorruption(self, cpv, e)
+
+ rows = self.con.fetchall()
+
+ if len(rows) == 0:
+ raise KeyError(cpv)
+
+ vals = dict([(k,"") for k in self._known_keys])
+ vals.update(dict(rows))
+ return vals
+
+
+ def _delitem(self, cpv):
+ """delete a cpv cache entry
+ derived RDBM classes for this *must* either support cascaded deletes, or
+ override this method"""
+ try:
+ try:
+ self.con.execute("DELETE FROM %s WHERE label=%s AND cpv=%s" % \
+ (self.SCHEMA_PACKAGE_NAME, self.label, self._sfilter(cpv)))
+ if self.autocommits:
+ self.commit()
+ except self._BaseError, e:
+ raise cache_errors.CacheCorruption(self, cpv, e)
+ if self.con.rowcount <= 0:
+ raise KeyError(cpv)
+ except Exception:
+ if not self.autocommits:
+ self.db.rollback()
+ # yes, this can roll back a lot more then just the delete. deal.
+ raise
+
+ def __del__(self):
+ # just to be safe.
+ if "db" in self.__dict__ and self.db != None:
+ self.commit()
+ self.db.close()
+
+ def _setitem(self, cpv, values):
+
+ try:
+ # insert.
+ try: pkgid = self._insert_cpv(cpv)
+ except self._BaseError, e:
+ raise cache_errors.CacheCorruption(cpv, e)
+
+ # __getitem__ fills out missing values,
+ # so we store only what's handed to us and is a known key
+ db_values = []
+ for key in self._known_keys:
+ if values.has_key(key) and values[key] != '':
+ db_values.append({"key":key, "value":values[key]})
+
+ if len(db_values) > 0:
+ try: self.con.executemany("INSERT INTO %s (pkgid, key, value) VALUES(\"%s\", %%(key)s, %%(value)s)" % \
+ (self.SCHEMA_VALUES_NAME, str(pkgid)), db_values)
+ except self._BaseError, e:
+ raise cache_errors.CacheCorruption(cpv, e)
+ if self.autocommits:
+ self.commit()
+
+ except Exception:
+ if not self.autocommits:
+ try: self.db.rollback()
+ except self._BaseError: pass
+ raise
+
+
+ def _insert_cpv(self, cpv):
+ """uses SCHEMA_INSERT_CPV_INTO_PACKAGE, which must be overloaded if the table definition
+ doesn't support auto-increment columns for pkgid.
+ returns the cpvs new pkgid
+ note this doesn't commit the transaction. The caller is expected to."""
+
+ cpv = self._sfilter(cpv)
+ if self._supports_replace:
+ query_str = self.SCHEMA_INSERT_CPV_INTO_PACKAGE.replace("INSERT","REPLACE",1)
+ else:
+ # just delete it.
+ try: del self[cpv]
+ except (cache_errors.CacheCorruption, KeyError): pass
+ query_str = self.SCHEMA_INSERT_CPV_INTO_PACKAGE
+ try:
+ self.con.execute(query_str % (self.label, cpv))
+ except self._BaseError:
+ self.db.rollback()
+ raise
+ self.con.execute("SELECT pkgid FROM %s WHERE label=%s AND cpv=%s" % \
+ (self.SCHEMA_PACKAGE_NAME, self.label, cpv))
+
+ if self.con.rowcount != 1:
+ raise cache_error.CacheCorruption(cpv, "Tried to insert the cpv, but found "
+ " %i matches upon the following select!" % len(rows))
+ return self.con.fetchone()[0]
+
+
+ def has_key(self, cpv):
+ if not self.autocommits:
+ try: self.commit()
+ except self._BaseError, e:
+ raise cache_errors.GeneralCacheCorruption(e)
+
+ try: self.con.execute("SELECT cpv FROM %s WHERE label=%s AND cpv=%s" % \
+ (self.SCHEMA_PACKAGE_NAME, self.label, self._sfilter(cpv)))
+ except self._BaseError, e:
+ raise cache_errors.GeneralCacheCorruption(e)
+ return self.con.rowcount > 0
+
+
+ def iterkeys(self):
+ if not self.autocommits:
+ try: self.commit()
+ except self._BaseError, e:
+ raise cache_errors.GeneralCacheCorruption(e)
+
+ try: self.con.execute("SELECT cpv FROM %s WHERE label=%s" %
+ (self.SCHEMA_PACKAGE_NAME, self.label))
+ except self._BaseError, e:
+ raise cache_errors.GeneralCacheCorruption(e)
+# return [ row[0] for row in self.con.fetchall() ]
+ for x in self.con.fetchall():
+ yield x[0]
+
+ def iteritems(self):
+ try: self.con.execute("SELECT cpv, key, value FROM %s NATURAL JOIN %s "
+ "WHERE label=%s" % (self.SCHEMA_PACKAGE_NAME, self.SCHEMA_VALUES_NAME,
+ self.label))
+ except self._BaseError, e:
+ raise cache_errors.CacheCorruption(self, cpv, e)
+
+ oldcpv = None
+ l = []
+ for x, y, v in self.con.fetchall():
+ if oldcpv != x:
+ if oldcpv != None:
+ d = dict(l)
+ if "_eclasses_" in d:
+ d["_eclasses_"] = reconstruct_eclasses(oldcpv, d["_eclasses_"])
+ yield cpv, d
+ l.clear()
+ oldcpv = x
+ l.append((y,v))
+ if oldcpv != None:
+ d = dict(l)
+ if "_eclasses_" in d:
+ d["_eclasses_"] = reconstruct_eclasses(oldcpv, d["_eclasses_"])
+ yield cpv, d
+
+ def commit(self):
+ self.db.commit()
+
+ def get_matches(self,match_dict):
+ query_list = []
+ for k,v in match_dict.items():
+ if k not in self._known_keys:
+ raise cache_errors.InvalidRestriction(k, v, "key isn't known to this cache instance")
+ v = v.replace("%","\\%")
+ v = v.replace(".*","%")
+ query_list.append("(key=%s AND value LIKE %s)" % (self._sfilter(k), self._sfilter(v)))
+
+ if len(query_list):
+ query = " AND "+" AND ".join(query_list)
+ else:
+ query = ''
+
+ print "query = SELECT cpv from package_cache natural join values_cache WHERE label=%s %s" % (self.label, query)
+ try: self.con.execute("SELECT cpv from package_cache natural join values_cache WHERE label=%s %s" % \
+ (self.label, query))
+ except self._BaseError, e:
+ raise cache_errors.GeneralCacheCorruption(e)
+
+ return [ row[0] for row in self.con.fetchall() ]
+
--- /dev/null
+# Copyright: 2005 Gentoo Foundation
+# Author(s): Brian Harring (ferringb@gentoo.org)
+# License: GPL2
+# $Id: sqlite.py 1911 2005-08-25 03:44:21Z ferringb $
+
+sqlite_module =__import__("sqlite")
+import os
+import sql_template, fs_template
+import cache_errors
+
+class database(fs_template.FsBased, sql_template.SQLDatabase):
+
+ SCHEMA_DELETE_NAME = "delete_package_values"
+ SCHEMA_DELETE_TRIGGER = """CREATE TRIGGER %s AFTER DELETE on %s
+ begin
+ DELETE FROM %s WHERE pkgid=old.pkgid;
+ end;""" % (SCHEMA_DELETE_NAME, sql_template.SQLDatabase.SCHEMA_PACKAGE_NAME,
+ sql_template.SQLDatabase.SCHEMA_VALUES_NAME)
+
+ _BaseError = sqlite_module.Error
+ _dbClass = sqlite_module
+ _supports_replace = True
+
+ def _dbconnect(self, config):
+ self._dbpath = os.path.join(self.location, fs_template.gen_label(self.location, self.label)+".sqldb")
+ try:
+ self.db = sqlite_module.connect(self._dbpath, mode=self._perms, autocommit=False)
+ if not self._ensure_access(self._dbpath):
+ raise cache_errors.InitializationError(self.__class__, "can't ensure perms on %s" % self._dbpath)
+ self.con = self.db.cursor()
+ except self._BaseError, e:
+ raise cache_errors.InitializationError(self.__class__, e)
+
+
+ def _initdb_con(self, config):
+ sql_template.SQLDatabase._initdb_con(self, config)
+ try:
+ self.con.execute("SELECT name FROM sqlite_master WHERE type=\"trigger\" AND name=%s" % \
+ self._sfilter(self.SCHEMA_DELETE_NAME))
+ if self.con.rowcount == 0:
+ self.con.execute(self.SCHEMA_DELETE_TRIGGER);
+ self.db.commit()
+ except self._BaseError, e:
+ raise cache_errors.InitializationError(self.__class__, e)
+
+ def _table_exists(self, tbl):
+ """return true/false dependant on a tbl existing"""
+ try: self.con.execute("SELECT name FROM sqlite_master WHERE type=\"table\" AND name=%s" %
+ self._sfilter(tbl))
+ except self._BaseError, e:
+ # XXX crappy.
+ return False
+ return len(self.con.fetchall()) == 1
+
+ # we can do it minus a query via rowid.
+ def _insert_cpv(self, cpv):
+ cpv = self._sfilter(cpv)
+ try: self.con.execute(self.SCHEMA_INSERT_CPV_INTO_PACKAGE.replace("INSERT","REPLACE",1) % \
+ (self.label, cpv))
+ except self._BaseError, e:
+ raise cache_errors.CacheCorruption(cpv, "tried to insert a cpv, but failed: %s" % str(e))
+
+ # sums the delete also
+ if self.con.rowcount <= 0 or self.con.rowcount > 2:
+ raise cache_errors.CacheCorruption(cpv, "tried to insert a cpv, but failed- %i rows modified" % self.rowcount)
+ return self.con.lastrowid
+
--- /dev/null
+# Copyright: 2005 Gentoo Foundation
+# Author(s): Brian Harring (ferringb@gentoo.org)
+# License: GPL2
+# $Id: template.py 1911 2005-08-25 03:44:21Z ferringb $
+
+import cache_errors
+from mappings import ProtectedDict
+
+class database(object):
+ # this is for metadata/cache transfer.
+ # basically flags the cache needs be updated when transfered cache to cache.
+ # leave this.
+
+ complete_eclass_entries_ = True
+ autocommits = False
+ cleanse_keys = False
+
+ def __init__(self, location, label, auxdbkeys, readonly=False):
+ """ initialize the derived class; specifically, store label/keys"""
+ self._known_keys = auxdbkeys
+ self.location = location
+ self.label = label
+ self.readonly = readonly
+ self.sync_rate = 0
+ self.updates = 0
+
+
+ def __getitem__(self, cpv):
+ """set a cpv to values
+ This shouldn't be overriden in derived classes since it handles the __eclasses__ conversion.
+ that said, if the class handles it, they can override it."""
+ if self.updates > self.sync_rate:
+ self.commit()
+ self.updates = 0
+ d=self._getitem(cpv)
+ if "_eclasses_" in d:
+ d["_eclasses_"] = reconstruct_eclasses(cpv, d["_eclasses_"])
+ return d
+
+ def _getitem(self, cpv):
+ """get cpv's values.
+ override this in derived classess"""
+ raise NotImplementedError
+
+
+ def __setitem__(self, cpv, values):
+ """set a cpv to values
+ This shouldn't be overriden in derived classes since it handles the readonly checks"""
+ if self.readonly:
+ raise cache_errors.ReadOnlyRestriction()
+ if self.cleanse_keys:
+ d=ProtectedDict(values)
+ for k in d.keys():
+ if d[k] == '':
+ del d[k]
+ if "_eclasses_" in values:
+ d["_eclasses_"] = serialize_eclasses(d["_eclasses_"])
+ elif "_eclasses_" in values:
+ d = ProtectedDict(values)
+ d["_eclasses_"] = serialize_eclasses(d["_eclasses_"])
+ else:
+ d = values
+ self._setitem(cpv, d)
+ if not self.autocommits:
+ self.updates += 1
+ if self.updates > self.sync_rate:
+ self.commit()
+ self.updates = 0
+
+
+ def _setitem(self, name, values):
+ """__setitem__ calls this after readonly checks. override it in derived classes
+ note _eclassees_ key *must* be handled"""
+ raise NotImplementedError
+
+
+ def __delitem__(self, cpv):
+ """delete a key from the cache.
+ This shouldn't be overriden in derived classes since it handles the readonly checks"""
+ if self.readonly:
+ raise cache_errors.ReadOnlyRestriction()
+ if not self.autocommits:
+ self.updates += 1
+ self._delitem(cpv)
+ if self.updates > self.sync_rate:
+ self.commit()
+ self.updates = 0
+
+
+ def _delitem(self,cpv):
+ """__delitem__ calls this after readonly checks. override it in derived classes"""
+ raise NotImplementedError
+
+
+ def has_key(self, cpv):
+ raise NotImplementedError
+
+
+ def keys(self):
+ return tuple(self.iterkeys())
+
+ def iterkeys(self):
+ raise NotImplementedError
+
+ def iteritems(self):
+ for x in self.iterkeys():
+ yield (x, self[x])
+
+ def items(self):
+ return list(self.iteritems())
+
+ def sync(self, rate=0):
+ self.sync_rate = rate
+ if(rate == 0):
+ self.commit()
+
+ def commit(self):
+ if not self.autocommits:
+ raise NotImplementedError
+
+ def get_matches(self, match_dict):
+ """generic function for walking the entire cache db, matching restrictions to
+ filter what cpv's are returned. Derived classes should override this if they
+ can implement a faster method then pulling each cpv:values, and checking it.
+
+ For example, RDBMS derived classes should push the matching logic down to the
+ actual RDBM."""
+
+ import re
+ restricts = {}
+ for key,match in match_dict.iteritems():
+ # XXX this sucks.
+ try:
+ if isinstance(match, str):
+ restricts[key] = re.compile(match).match
+ else:
+ restricts[key] = re.compile(match[0],match[1]).match
+ except re.error, e:
+ raise InvalidRestriction(key, match, e)
+ if key not in self.__known_keys:
+ raise InvalidRestriction(key, match, "Key isn't valid")
+
+ for cpv in self.keys():
+ cont = True
+ vals = self[cpv]
+ for key, match in restricts.iteritems():
+ if not match(vals[key]):
+ cont = False
+ break
+ if cont:
+# yield cpv,vals
+ yield cpv
+
+
+def serialize_eclasses(eclass_dict):
+ """takes a dict, returns a string representing said dict"""
+ return "\t".join(["%s\t%s\t%s" % (k, v[0], str(v[1])) for k,v in eclass_dict.items()])
+
+def reconstruct_eclasses(cpv, eclass_string):
+ """returns a dict when handed a string generated by serialize_eclasses"""
+ eclasses = eclass_string.rstrip().lstrip().split("\t")
+ if eclasses == [""]:
+ # occasionally this occurs in the fs backends. they suck.
+ return {}
+ if len(eclasses) % 3 != 0:
+ raise cache_errors.CacheCorruption(cpv, "_eclasses_ was of invalid len %i" % len(eclasses))
+ d={}
+ for x in range(0, len(eclasses), 3):
+ d[eclasses[x]] = (eclasses[x + 1], long(eclasses[x + 2]))
+ del eclasses
+ return d
--- /dev/null
+# Copyright: 2005 Gentoo Foundation
+# Author(s): Brian Harring (ferringb@gentoo.org)
+# License: GPL2
+# $Id: util.py 1911 2005-08-25 03:44:21Z ferringb $
+
+import cache_errors
+
+def mirror_cache(valid_nodes_iterable, src_cache, trg_cache, eclass_cache=None, verbose_instance=None):
+
+ if not src_cache.complete_eclass_entries and not eclass_cache:
+ raise Exception("eclass_cache required for cache's of class %s!" % src_cache.__class__)
+
+ if verbose_instance == None:
+ noise=quiet_mirroring()
+ else:
+ noise=verbose_instance
+
+ dead_nodes = {}
+ dead_nodes.fromkeys(trg_cache.keys())
+ count=0
+
+ if not trg_cache.autocommits:
+ trg_cache.sync(100)
+
+ for x in valid_nodes_iterable:
+# print "processing x=",x
+ count+=1
+ if dead_nodes.has_key(x):
+ del dead_nodes[x]
+ try: entry = src_cache[x]
+ except KeyError, e:
+ noise.missing_entry(x)
+ del e
+ continue
+ write_it = True
+ try:
+ trg = trg_cache[x]
+ if long(trg["_mtime_"]) == long(entry["_mtime_"]) and eclass_cache.is_eclass_data_valid(trg["_eclasses_"]):
+ write_it = False
+ except (cache_errors.CacheError, KeyError):
+ pass
+
+ if write_it:
+ if entry.get("INHERITED",""):
+ if src_cache.complete_eclass_entries:
+ if not "_eclasses_" in entry:
+ noise.corruption(x,"missing _eclasses_ field")
+ continue
+ if not eclass_cache.is_eclass_data_valid(entry["_eclasses_"]):
+ noise.eclass_stale(x)
+ continue
+ else:
+ entry["_eclasses_"] = eclass_cache.get_eclass_data(entry["INHERITED"].split(), \
+ from_master_only=True)
+ if not entry["_eclasses_"]:
+ noise.eclass_stale(x)
+ continue
+
+ # by this time, if it reaches here, the eclass has been validated, and the entry has
+ # been updated/translated (if needs be, for metadata/cache mainly)
+ try: trg_cache[x] = entry
+ except cache_errors.CacheError, ce:
+ noise.exception(x, ce)
+ del ce
+ continue
+ if count >= noise.call_update_min:
+ noise.update(x)
+ count = 0
+
+ if not trg_cache.autocommits:
+ trg_cache.commit()
+
+ # ok. by this time, the trg_cache is up to date, and we have a dict
+ # with a crapload of cpv's. we now walk the target db, removing stuff if it's in the list.
+ for key in dead_nodes:
+ try: del trg_cache[key]
+ except cache_errors.CacheError, ce:
+ noise.exception(ce)
+ del ce
+ dead_nodes.clear()
+ noise.finish()
+
+
+class quiet_mirroring(object):
+ # call_update_every is used by mirror_cache to determine how often to call in.
+ # quiet defaults to 2^24 -1. Don't call update, 'cept once every 16 million or so :)
+ call_update_min = 0xffffff
+ def update(self,key,*arg): pass
+ def exception(self,key,*arg): pass
+ def eclass_stale(self,*arg): pass
+ def missing_entry(self, key): pass
+ def misc(self,key,*arg): pass
+ def corruption(self, key, s): pass
+ def finish(self, *arg): pass
+
+class non_quiet_mirroring(quiet_mirroring):
+ call_update_min=1
+ def update(self,key,*arg): print "processed",key
+ def exception(self, key, *arg): print "exec",key,arg
+ def missing(self,key): print "key %s is missing", key
+ def corruption(self,key,*arg): print "corrupt %s:" % key,arg
+ def eclass_stale(self,key,*arg):print "stale %s:"%key,arg
+
projects / portage.git / commitdiff