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""" Tracing utils """ from .callers import _Result
class TagTracer(object): def __init__(self): self._tag2proc = {} self.writer = None self.indent = 0
def get(self, name):
def format_message(self, tags, args): if isinstance(args[-1], dict): extra = args[-1] args = args[:-1] else: extra = {}
content = " ".join(map(str, args)) indent = " " * self.indent
lines = ["%s%s [%s]\n" % (indent, content, ":".join(tags))]
for name, value in extra.items(): lines.append("%s %s: %s\n" % (indent, name, value)) return lines
def processmessage(self, tags, args): lines = self.format_message(tags, args) self.writer("".join(lines))
def setwriter(self, writer): self.writer = writer
def setprocessor(self, tags, processor): if isinstance(tags, str): tags = tuple(tags.split(":")) else: assert isinstance(tags, tuple) self._tag2proc[tags] = processor
class TagTracerSub(object): def __init__(self, root, tags):
def __call__(self, *args):
def setmyprocessor(self, processor): self.root.setprocessor(self.tags, processor)
def get(self, name):
class _TracedHookExecution(object): def __init__(self, pluginmanager, before, after): self.pluginmanager = pluginmanager self.before = before self.after = after self.oldcall = pluginmanager._inner_hookexec assert not isinstance(self.oldcall, _TracedHookExecution) self.pluginmanager._inner_hookexec = self
def __call__(self, hook, hook_impls, kwargs): self.before(hook.name, hook_impls, kwargs) outcome = _Result.from_call(lambda: self.oldcall(hook, hook_impls, kwargs)) self.after(outcome, hook.name, hook_impls, kwargs) return outcome.get_result()
def undo(self): self.pluginmanager._inner_hookexec = self.oldcall |