def _get_parent_branch_series(self, query, limit=LOADER_LIMIT, offset=0):
"""Iterate through parent branches, find cached series for parent
branch and return series matching query"""
root_branch_query = False
_pattern = ".".join(query.pattern.split('.')[:-1])
if not _pattern:
_pattern = '*'
root_branch_query = True
parent_branch_series = self.get_all_cached_series(
_pattern, limit=limit, offset=offset)
while not parent_branch_series and not root_branch_query:
logger.debug("No cached series list for parent branch query %s, "
"continuing with more parents", _pattern)
_pattern = ".".join(_pattern.split('.')[:-1])
if not _pattern:
_pattern = '*'
root_branch_query = True
parent_branch_series = self.get_all_cached_series(
_pattern, limit=limit, offset=offset)
if not parent_branch_series:
return
logger.debug("Found cached parent branch series for parent query %s "
"limit %s offset %s",
_pattern, limit, offset)
series = match_entries(parent_branch_series, query.pattern) \
if is_pattern(query.pattern) \
else [b for b in parent_branch_series if
b.startswith(query.pattern)]
return series
def search(self, node, split_query, split_path):
"""Return matching children for each query part in split query starting
from given node"""
sub_query = split_query[0]
keys = [_decode_str(key) for (key, _) in node.children] \
if node.children is not None else []
matched_paths = match_entries(keys, sub_query)
matched_children = (
(_decode_str(path), _node)
for (path, _node) in node.children
if _decode_str(path) in matched_paths) \
if node.children is not None and is_pattern(sub_query) \
else [(sub_query, [n for (k, n) in node.children
if _decode_str(k) == sub_query][0])] \
if node.children is not None \
and sub_query in keys else []
for child_name, child_node in matched_children:
child_path = split_path[:]
child_path.append(child_name)
child_query = split_query[1:]
if len(child_query) > 0:
for sub in self.search(child_node, child_query, child_path):
yield sub
else:
yield (child_path, child_node)
def _get_matched_children(self, sub_query, node):
keys = [_decode_str(key) for (key, _) in node.children] \
if node.children is not None else []
matched_paths = match_entries(keys, sub_query)
if node.children is not None and is_pattern(sub_query):
matched_children = self._get_children_from_matched_paths(
matched_paths, node)
else:
matched_children = [(sub_query,
self._get_child_from_string_query(
sub_query, node))] \
if node.children is not None \
and sub_query in keys else []
return matched_children
def _search_nodes(self, pattern):
parts = pattern.split('.')
queue = [('_parent:_root', parts)]
while queue:
search_term, patterns = queue.pop()
pattern = patterns[0]
patterns = patterns[1:]
# map branches to their resource (the branch full path) and the
# retrieved metrics (the leaves)
branches = {}
for resource, metrics in self._run_search(search_term):
if search_term == '_parent:_root':
branch = resource
else:
# XXX column is valid in graphite names
branch = resource.rsplit(':', 1)[1]
branches[branch] = (resource, metrics)
# multi-part pattern
if patterns:
# walk the branches first
for match in match_entries(branches.keys(), pattern):
resource, metrics = branches[match]
parent_term = resource.replace(':', '\:')
parent_term = parent_term.replace('-', '\-')
queue.append(('_parent:%s' % parent_term, patterns))
# only one pattern left, match leaves too (i.e. metrics)
if len(patterns) == 1:
for match in match_entries(metrics, patterns[0]):
yield resource, match, True
else:
# patterns like 'foo', yield only branches
for match in match_entries(branches.keys(), pattern):
yield match, None, False
def _search_nodes(self, pattern):
parts = pattern.split('.')
queue = [('_parent:_root', parts)]
while queue:
search_term, patterns = queue.pop()
pattern = patterns[0]
patterns = patterns[1:]
# map branches to their resource (the branch full path) and the
# retrieved metrics (the leaves)
branches = {}
for resource, metrics in self._run_search(search_term):
if search_term == '_parent:_root':
branch = resource
else:
# XXX column is valid in graphite names
branch = resource.rsplit(':', 1)[1]
branches[branch] = (resource, metrics)
# multi-part pattern
if patterns:
# walk the branches first
for match in match_entries(branches.keys(), pattern):
resource, metrics = branches[match]
parent_term = resource.replace(':', '\:')
parent_term = parent_term.replace('-', '\-')
queue.append(('_parent:%s' % parent_term, patterns))
# only one pattern left, match leaves too (i.e. metrics)
if len(patterns) == 1:
for match in match_entries(metrics, patterns[0]):
yield resource, match, True
else:
# patterns like 'foo', yield only branches
for match in match_entries(branches.keys(), pattern):
yield match, None, False
def _match(self, metric, pattern):
return match_entries([metric], pattern)
