##// END OF EJS Templates
tests: use sha256line.py instead of /dev/random in test-censor.t (issue6858)...
tests: use sha256line.py instead of /dev/random in test-censor.t (issue6858) Sometimes the systems that run our test suite don't have enough entropy and they cannot produce target file of the expected size using /dev/random, which results in test failures. Switching to /dev/urandom would give us way more available data at the cost of it being less "random", but we don't really need to use entropy for this task at all, since we only care if the file size after compression is big enough to not be stored inline in the revlog. So let's use something that we already have used to generate this kind of data in other tests.

File last commit:

r49801:642e31cb default
r52255:e7be2ddf stable
Show More
metadatastore.py
165 lines | 5.1 KiB | text/x-python | PythonLexer
from mercurial.node import (
hex,
sha1nodeconstants,
)
from . import (
basestore,
shallowutil,
)
class unionmetadatastore(basestore.baseunionstore):
def __init__(self, *args, **kwargs):
super(unionmetadatastore, self).__init__(*args, **kwargs)
self.stores = args
self.writestore = kwargs.get('writestore')
# If allowincomplete==True then the union store can return partial
# ancestor lists, otherwise it will throw a KeyError if a full
# history can't be found.
self.allowincomplete = kwargs.get('allowincomplete', False)
def getancestors(self, name, node, known=None):
"""Returns as many ancestors as we're aware of.
return value: {
node: (p1, p2, linknode, copyfrom),
...
}
"""
if known is None:
known = set()
if node in known:
return []
ancestors = {}
def traverse(curname, curnode):
# TODO: this algorithm has the potential to traverse parts of
# history twice. Ex: with A->B->C->F and A->B->D->F, both D and C
# may be queued as missing, then B and A are traversed for both.
queue = [(curname, curnode)]
missing = []
seen = set()
while queue:
name, node = queue.pop()
if (name, node) in seen:
continue
seen.add((name, node))
value = ancestors.get(node)
if not value:
missing.append((name, node))
continue
p1, p2, linknode, copyfrom = value
if p1 != sha1nodeconstants.nullid and p1 not in known:
queue.append((copyfrom or curname, p1))
if p2 != sha1nodeconstants.nullid and p2 not in known:
queue.append((curname, p2))
return missing
missing = [(name, node)]
while missing:
curname, curnode = missing.pop()
try:
ancestors.update(
self._getpartialancestors(curname, curnode, known=known)
)
newmissing = traverse(curname, curnode)
missing.extend(newmissing)
except KeyError:
# If we allow incomplete histories, don't throw.
if not self.allowincomplete:
raise
# If the requested name+node doesn't exist, always throw.
if (curname, curnode) == (name, node):
raise
# TODO: ancestors should probably be (name, node) -> (value)
return ancestors
@basestore.baseunionstore.retriable
def _getpartialancestors(self, name, node, known=None):
for store in self.stores:
try:
return store.getancestors(name, node, known=known)
except KeyError:
pass
raise KeyError((name, hex(node)))
@basestore.baseunionstore.retriable
def getnodeinfo(self, name, node):
for store in self.stores:
try:
return store.getnodeinfo(name, node)
except KeyError:
pass
raise KeyError((name, hex(node)))
def add(self, name, node, data):
raise RuntimeError(
b"cannot add content only to remotefilelog contentstore"
)
def getmissing(self, keys):
missing = keys
for store in self.stores:
if missing:
missing = store.getmissing(missing)
return missing
def markledger(self, ledger, options=None):
for store in self.stores:
store.markledger(ledger, options)
def getmetrics(self):
metrics = [s.getmetrics() for s in self.stores]
return shallowutil.sumdicts(*metrics)
class remotefilelogmetadatastore(basestore.basestore):
def getancestors(self, name, node, known=None):
"""Returns as many ancestors as we're aware of.
return value: {
node: (p1, p2, linknode, copyfrom),
...
}
"""
data = self._getdata(name, node)
ancestors = shallowutil.ancestormap(data)
return ancestors
def getnodeinfo(self, name, node):
return self.getancestors(name, node)[node]
def add(self, name, node, parents, linknode):
raise RuntimeError(
b"cannot add metadata only to remotefilelog metadatastore"
)
class remotemetadatastore:
def __init__(self, ui, fileservice, shared):
self._fileservice = fileservice
self._shared = shared
def getancestors(self, name, node, known=None):
self._fileservice.prefetch(
[(name, hex(node))], force=True, fetchdata=False, fetchhistory=True
)
return self._shared.getancestors(name, node, known=known)
def getnodeinfo(self, name, node):
return self.getancestors(name, node)[node]
def add(self, name, node, data):
raise RuntimeError(b"cannot add to a remote store")
def getmissing(self, keys):
return keys
def markledger(self, ledger, options=None):
pass