def fetch(self, key, varenv):
'''fetch a single namespace entry from the graph'''
args = (self.namemap.bootstrap.has_key[1:], self.guid[1:], quote(key))
qs = '(typeguid=%s left=%s value=%s comparator="octet" datatype=string pagesize=2 result=((value left right)))' % args
r = self.namemap.gc.read_varenv(qs, varenv)
# we asked for pagesize=2 just to check this
if len(r) > 1:
LOG.warning('mql.duplicate.key',
'%s in namespace %s' % (key, self.guid))
elif len(r) == 0:
return False
(value, nsg, g) = (unquote(r[0][0]), '#' + r[0][1], '#' + r[0][2])
if nsg != self.guid:
raise MQLInternalError(None,
"Mismatched namespace query",
value=value,
namespace=self.guid,
returned_namespace=nsg,
guid=g)
# this assert can fail because of graphd case-insensitivity
#assert unquote(value) == key, "%s != %s" % (unquote(value), key)
self.store(key, g)
return g
def list_or_item(self, result, varenv):
# return a list if we want a list or the first item if we don't
if self.query.list:
return result
elif len(result) == 1:
return result[0]
elif len(result) == 0:
return None
elif varenv.get('uniqueness_failure', None) == 'soft':
# this supresses the exception in favor of a warning message
LOG.warning(
'soft.uniqueness.failure', repr(self.query), result=repr(result))
return result[0]
else:
# this mutates the result, but we don't want it anyway...
varenv.lookup_manager.do_id_lookups()
result = varenv.lookup_manager.substitute_ids(result)
raise MQLTooManyValuesForUniqueQuery(
self.query, results=result, count=len(result))
def lookup_by_guid_oneoff(self, g, varenv):
root_ns_guid = self.bootstrap.root_namespace
res = []
name = []
found = set()
next = g
# this is ridiculously deep - 18 ply.
for i in xrange(6):
res = self.lookup_by_guid_oneoff_internal(next, varenv)
if not res:
# we've ceased to make progress - bail
LOG.warning('mql.namespace.error',
'id for guid not found',
guid=g)
return g
for pair in res:
name.append(pair[0])
next = pair[1]
if next == root_ns_guid:
name.reverse()
return "/" + "/".join(name)
if next in found:
LOG.warning('mql.namespace.error',
'cycle in namespace looking for guid',
guid=g)
return g
found.add(next)
LOG.warning('mql.namespace.error',
'depth limit exceeded in namespace lookup',
guid=g)
return g
def cmdline_main():
LOG.warning("benchmark", "test start")
start_time = time.time()
from mql.mql import cmdline
op = cmdline.OP("testing")
op.add_option(
"-n", dest="num", default=1000, type="int", help="number of iterations")
op.add_option(
"-P",
dest="profile",
default=None,
help="run profiler with output to file")
op.add_option("-c", dest="call", default=None, help="function to call")
op.add_option(
"-f", dest="query_file", default=None, help="file containing query")
op.add_option(
"--flush",
dest="flush",
default=None,
help="flush cache between every request")
op.add_option("-t", dest="type", default="mql", help="graph or MQL query")
options, args = op.parse_args()
stop_time = time.time()
op.ctx.gc.totalcost["dt"] = stop_time - start_time
LOG.warning("start cost", {
"nreqs": op.ctx.gc.nrequests,
"cost": op.ctx.gc.totalcost
})
options, args = op.parse_args()
queryfile = options.query_file
if queryfile is not None:
qf = open(queryfile, "r")
query = "".join(qf.readlines())
regex = re.compile("[\n\t]+")
query = regex.sub(" ", query)
qf.close()
elif options.call:
query = globals()[options.call]()
elif len(args) == 1:
query = args[0]
else:
op.error("Must specify a query argument")
if options.type == "mql":
# XXX should eventually use unicode, for now utf8
query = json.loads(query, encoding="utf-8", result_encoding="utf-8")
elif options.type == "graph":
pass
else:
op.error("-t must be 'mql' or 'graph'")
if options.profile:
if profiler == "hotshot":
profile = hotshot.Profile(options.profile)
profile.runcall(test_run, op.ctx, op.varenv, options, query)
LOG.warning(
"benchmark",
"Saving hotshot profile in Stats format to %s" % options.profile)
elif profiler == "cProfile":
profile = cProfile.Profile()
profile.runcall(test_run, op.ctx, op.varenv, options, query)
LOG.warning(
"benchmark",
"Saving cProfile data in kcachegrind format to %s" % options.profile)
# get from http://jcalderone.livejournal.com/21124.html
# and put in thirdparty/pyroot
from mql.mql import lsprofcalltree
k = lsprofcalltree.KCacheGrind(profile)
k.output(open(options.profile, "w"))
else:
LOG.warning("benchmark", "No profiler available, not running benchmark")
else:
reslist = test_run(op.ctx, op.varenv, options, query)
LOG.warning("run cost", {
"nreqs": op.ctx.gc.nrequests,
"cost": op.ctx.gc.totalcost
})
