Mercurial > hg
view hgext/remotefilelog/debugcommands.py @ 47012:d55b71393907
node: replace nullid and friends with nodeconstants class
The introduction of 256bit hashes require changes to nullid and other
constant magic values. Start pushing them down from repository and
revlog where sensible.
Differential Revision: https://phab.mercurial-scm.org/D9465
author | Joerg Sonnenberger <joerg@bec.de> |
---|---|
date | Mon, 29 Mar 2021 01:52:06 +0200 |
parents | 59fa3890d40a |
children | 6000f5b25c9b |
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# debugcommands.py - debug logic for remotefilelog # # Copyright 2013 Facebook, Inc. # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. from __future__ import absolute_import import os import zlib from mercurial.node import ( bin, hex, sha1nodeconstants, short, ) from mercurial.i18n import _ from mercurial.pycompat import open from mercurial import ( error, filelog, lock as lockmod, pycompat, revlog, ) from mercurial.utils import hashutil from . import ( constants, datapack, fileserverclient, historypack, repack, shallowutil, ) def debugremotefilelog(ui, path, **opts): decompress = opts.get('decompress') size, firstnode, mapping = parsefileblob(path, decompress) ui.status(_(b"size: %d bytes\n") % size) ui.status(_(b"path: %s \n") % path) ui.status(_(b"key: %s \n") % (short(firstnode))) ui.status(_(b"\n")) ui.status( _(b"%12s => %12s %13s %13s %12s\n") % (b"node", b"p1", b"p2", b"linknode", b"copyfrom") ) queue = [firstnode] while queue: node = queue.pop(0) p1, p2, linknode, copyfrom = mapping[node] ui.status( _(b"%s => %s %s %s %s\n") % (short(node), short(p1), short(p2), short(linknode), copyfrom) ) if p1 != sha1nodeconstants.nullid: queue.append(p1) if p2 != sha1nodeconstants.nullid: queue.append(p2) def buildtemprevlog(repo, file): # get filename key filekey = hex(hashutil.sha1(file).digest()) filedir = os.path.join(repo.path, b'store/data', filekey) # sort all entries based on linkrev fctxs = [] for filenode in os.listdir(filedir): if b'_old' not in filenode: fctxs.append(repo.filectx(file, fileid=bin(filenode))) fctxs = sorted(fctxs, key=lambda x: x.linkrev()) # add to revlog temppath = repo.sjoin(b'data/temprevlog.i') if os.path.exists(temppath): os.remove(temppath) r = filelog.filelog(repo.svfs, b'temprevlog') class faket(object): def add(self, a, b, c): pass t = faket() for fctx in fctxs: if fctx.node() not in repo: continue p = fctx.filelog().parents(fctx.filenode()) meta = {} if fctx.renamed(): meta[b'copy'] = fctx.renamed()[0] meta[b'copyrev'] = hex(fctx.renamed()[1]) r.add(fctx.data(), meta, t, fctx.linkrev(), p[0], p[1]) return r def debugindex(orig, ui, repo, file_=None, **opts): """dump the contents of an index file""" if ( opts.get('changelog') or opts.get('manifest') or opts.get('dir') or not shallowutil.isenabled(repo) or not repo.shallowmatch(file_) ): return orig(ui, repo, file_, **opts) r = buildtemprevlog(repo, file_) # debugindex like normal format = opts.get(b'format', 0) if format not in (0, 1): raise error.Abort(_(b"unknown format %d") % format) generaldelta = r.version & revlog.FLAG_GENERALDELTA if generaldelta: basehdr = b' delta' else: basehdr = b' base' if format == 0: ui.write( ( b" rev offset length " + basehdr + b" linkrev" b" nodeid p1 p2\n" ) ) elif format == 1: ui.write( ( b" rev flag offset length" b" size " + basehdr + b" link p1 p2" b" nodeid\n" ) ) for i in r: node = r.node(i) if generaldelta: base = r.deltaparent(i) else: base = r.chainbase(i) if format == 0: try: pp = r.parents(node) except Exception: pp = [repo.nullid, repo.nullid] ui.write( b"% 6d % 9d % 7d % 6d % 7d %s %s %s\n" % ( i, r.start(i), r.length(i), base, r.linkrev(i), short(node), short(pp[0]), short(pp[1]), ) ) elif format == 1: pr = r.parentrevs(i) ui.write( b"% 6d %04x % 8d % 8d % 8d % 6d % 6d % 6d % 6d %s\n" % ( i, r.flags(i), r.start(i), r.length(i), r.rawsize(i), base, r.linkrev(i), pr[0], pr[1], short(node), ) ) def debugindexdot(orig, ui, repo, file_): """dump an index DAG as a graphviz dot file""" if not shallowutil.isenabled(repo): return orig(ui, repo, file_) r = buildtemprevlog(repo, os.path.basename(file_)[:-2]) ui.writenoi18n(b"digraph G {\n") for i in r: node = r.node(i) pp = r.parents(node) ui.write(b"\t%d -> %d\n" % (r.rev(pp[0]), i)) if pp[1] != repo.nullid: ui.write(b"\t%d -> %d\n" % (r.rev(pp[1]), i)) ui.write(b"}\n") def verifyremotefilelog(ui, path, **opts): decompress = opts.get('decompress') for root, dirs, files in os.walk(path): for file in files: if file == b"repos": continue filepath = os.path.join(root, file) size, firstnode, mapping = parsefileblob(filepath, decompress) for p1, p2, linknode, copyfrom in pycompat.itervalues(mapping): if linknode == sha1nodeconstants.nullid: actualpath = os.path.relpath(root, path) key = fileserverclient.getcachekey( b"reponame", actualpath, file ) ui.status( b"%s %s\n" % (key, os.path.relpath(filepath, path)) ) def _decompressblob(raw): return zlib.decompress(raw) def parsefileblob(path, decompress): f = open(path, b"rb") try: raw = f.read() finally: f.close() if decompress: raw = _decompressblob(raw) offset, size, flags = shallowutil.parsesizeflags(raw) start = offset + size firstnode = None mapping = {} while start < len(raw): divider = raw.index(b'\0', start + 80) currentnode = raw[start : (start + 20)] if not firstnode: firstnode = currentnode p1 = raw[(start + 20) : (start + 40)] p2 = raw[(start + 40) : (start + 60)] linknode = raw[(start + 60) : (start + 80)] copyfrom = raw[(start + 80) : divider] mapping[currentnode] = (p1, p2, linknode, copyfrom) start = divider + 1 return size, firstnode, mapping def debugdatapack(ui, *paths, **opts): for path in paths: if b'.data' in path: path = path[: path.index(b'.data')] ui.write(b"%s:\n" % path) dpack = datapack.datapack(path) node = opts.get('node') if node: deltachain = dpack.getdeltachain(b'', bin(node)) dumpdeltachain(ui, deltachain, **opts) return if opts.get('long'): hashformatter = hex hashlen = 42 else: hashformatter = short hashlen = 14 lastfilename = None totaldeltasize = 0 totalblobsize = 0 def printtotals(): if lastfilename is not None: ui.write(b"\n") if not totaldeltasize or not totalblobsize: return difference = totalblobsize - totaldeltasize deltastr = b"%0.1f%% %s" % ( (100.0 * abs(difference) / totalblobsize), (b"smaller" if difference > 0 else b"bigger"), ) ui.writenoi18n( b"Total:%s%s %s (%s)\n" % ( b"".ljust(2 * hashlen - len(b"Total:")), (b'%d' % totaldeltasize).ljust(12), (b'%d' % totalblobsize).ljust(9), deltastr, ) ) bases = {} nodes = set() failures = 0 for filename, node, deltabase, deltalen in dpack.iterentries(): bases[node] = deltabase if node in nodes: ui.write((b"Bad entry: %s appears twice\n" % short(node))) failures += 1 nodes.add(node) if filename != lastfilename: printtotals() name = b'(empty name)' if filename == b'' else filename ui.write(b"%s:\n" % name) ui.write( b"%s%s%s%s\n" % ( b"Node".ljust(hashlen), b"Delta Base".ljust(hashlen), b"Delta Length".ljust(14), b"Blob Size".ljust(9), ) ) lastfilename = filename totalblobsize = 0 totaldeltasize = 0 # Metadata could be missing, in which case it will be an empty dict. meta = dpack.getmeta(filename, node) if constants.METAKEYSIZE in meta: blobsize = meta[constants.METAKEYSIZE] totaldeltasize += deltalen totalblobsize += blobsize else: blobsize = b"(missing)" ui.write( b"%s %s %s%s\n" % ( hashformatter(node), hashformatter(deltabase), (b'%d' % deltalen).ljust(14), pycompat.bytestr(blobsize), ) ) if filename is not None: printtotals() failures += _sanitycheck(ui, set(nodes), bases) if failures > 1: ui.warn((b"%d failures\n" % failures)) return 1 def _sanitycheck(ui, nodes, bases): """ Does some basic sanity checking on a packfiles with ``nodes`` ``bases`` (a mapping of node->base): - Each deltabase must itself be a node elsewhere in the pack - There must be no cycles """ failures = 0 for node in nodes: seen = set() current = node deltabase = bases[current] while deltabase != sha1nodeconstants.nullid: if deltabase not in nodes: ui.warn( ( b"Bad entry: %s has an unknown deltabase (%s)\n" % (short(node), short(deltabase)) ) ) failures += 1 break if deltabase in seen: ui.warn( ( b"Bad entry: %s has a cycle (at %s)\n" % (short(node), short(deltabase)) ) ) failures += 1 break current = deltabase seen.add(current) deltabase = bases[current] # Since ``node`` begins a valid chain, reset/memoize its base to nullid # so we don't traverse it again. bases[node] = sha1nodeconstants.nullid return failures def dumpdeltachain(ui, deltachain, **opts): hashformatter = hex hashlen = 40 lastfilename = None for filename, node, filename, deltabasenode, delta in deltachain: if filename != lastfilename: ui.write(b"\n%s\n" % filename) lastfilename = filename ui.write( b"%s %s %s %s\n" % ( b"Node".ljust(hashlen), b"Delta Base".ljust(hashlen), b"Delta SHA1".ljust(hashlen), b"Delta Length".ljust(6), ) ) ui.write( b"%s %s %s %d\n" % ( hashformatter(node), hashformatter(deltabasenode), hex(hashutil.sha1(delta).digest()), len(delta), ) ) def debughistorypack(ui, path): if b'.hist' in path: path = path[: path.index(b'.hist')] hpack = historypack.historypack(path) lastfilename = None for entry in hpack.iterentries(): filename, node, p1node, p2node, linknode, copyfrom = entry if filename != lastfilename: ui.write(b"\n%s\n" % filename) ui.write( b"%s%s%s%s%s\n" % ( b"Node".ljust(14), b"P1 Node".ljust(14), b"P2 Node".ljust(14), b"Link Node".ljust(14), b"Copy From", ) ) lastfilename = filename ui.write( b"%s %s %s %s %s\n" % ( short(node), short(p1node), short(p2node), short(linknode), copyfrom, ) ) def debugwaitonrepack(repo): with lockmod.lock(repack.repacklockvfs(repo), b"repacklock", timeout=-1): return def debugwaitonprefetch(repo): with repo._lock( repo.svfs, b"prefetchlock", True, None, None, _(b'prefetching in %s') % repo.origroot, ): pass