Mercurial > hg
view hgext/remotefilelog/metadatastore.py @ 40753:9199548525fc
subrepo-git: use an official origvfs when appropriate
The origvfs has the auditor properly set and can move file without issue.
The current code is currently working without errors because rename are not
audited, yet.
author | Boris Feld <boris.feld@octobus.net> |
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date | Thu, 22 Nov 2018 20:01:28 +0100 |
parents | 13d4ad8d7801 |
children | 2372284d9457 |
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from __future__ import absolute_import from mercurial.node import hex, nullid 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(r'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(r'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 != nullid and p1 not in known: queue.append((copyfrom or curname, p1)) if p2 != 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("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("cannot add metadata only to remotefilelog " "metadatastore") class remotemetadatastore(object): 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("cannot add to a remote store") def getmissing(self, keys): return keys def markledger(self, ledger, options=None): pass