mirror of
https://github.com/thegeeklab/ansible-later.git
synced 2024-11-23 13:20:41 +00:00
84 lines
2.3 KiB
Python
84 lines
2.3 KiB
Python
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"""
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Tracing utils
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"""
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from .callers import _Result
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class TagTracer(object):
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def __init__(self):
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self._tag2proc = {}
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self.writer = None
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self.indent = 0
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def get(self, name):
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return TagTracerSub(self, (name,))
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def format_message(self, tags, args):
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if isinstance(args[-1], dict):
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extra = args[-1]
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args = args[:-1]
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else:
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extra = {}
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content = " ".join(map(str, args))
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indent = " " * self.indent
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lines = ["%s%s [%s]\n" % (indent, content, ":".join(tags))]
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for name, value in extra.items():
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lines.append("%s %s: %s\n" % (indent, name, value))
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return lines
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def processmessage(self, tags, args):
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if self.writer is not None and args:
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lines = self.format_message(tags, args)
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self.writer("".join(lines))
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try:
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self._tag2proc[tags](tags, args)
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except KeyError:
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pass
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def setwriter(self, writer):
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self.writer = writer
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def setprocessor(self, tags, processor):
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if isinstance(tags, str):
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tags = tuple(tags.split(":"))
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else:
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assert isinstance(tags, tuple)
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self._tag2proc[tags] = processor
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class TagTracerSub(object):
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def __init__(self, root, tags):
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self.root = root
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self.tags = tags
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def __call__(self, *args):
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self.root.processmessage(self.tags, args)
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def setmyprocessor(self, processor):
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self.root.setprocessor(self.tags, processor)
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def get(self, name):
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return self.__class__(self.root, self.tags + (name,))
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class _TracedHookExecution(object):
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def __init__(self, pluginmanager, before, after):
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self.pluginmanager = pluginmanager
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self.before = before
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self.after = after
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self.oldcall = pluginmanager._inner_hookexec
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assert not isinstance(self.oldcall, _TracedHookExecution)
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self.pluginmanager._inner_hookexec = self
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def __call__(self, hook, hook_impls, kwargs):
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self.before(hook.name, hook_impls, kwargs)
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outcome = _Result.from_call(lambda: self.oldcall(hook, hook_impls, kwargs))
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self.after(outcome, hook.name, hook_impls, kwargs)
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return outcome.get_result()
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def undo(self):
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self.pluginmanager._inner_hookexec = self.oldcall
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