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import abc |
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from abc import ABCMeta |
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from collections import namedtuple |
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import json |
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class Msg: |
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""" |
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An abstract base class for all messages used for communicating between |
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the WebServices. |
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The minimal functionality is the ability to instantiate a Msg from JSON |
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and to write a Msg instance to JSON. |
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We use namedtuples because they are lightweight and immutable. The splat |
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operator (*) that we inherit from namedtuple is also convenient. We empty |
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__slots__ to avoid unnecessary overhead. |
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""" |
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__metaclass__ = ABCMeta |
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@abc.abstractmethod |
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def for_json(self): |
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d = self._asdict() |
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type_str = self.__class__.__name__ |
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d.update({"type": type_str}) |
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return d |
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@abc.abstractmethod |
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def to_json(self): |
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return json.dumps(self.for_json()) |
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@staticmethod |
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def from_json(str): |
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d = json.loads(str) |
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type_str = d["type"] |
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del d["type"] |
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return eval(type_str)(**d) |
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class LoadSuccessful( |
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namedtuple( |
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"LoadSuccessful", ["uri", "path", "version", "is_update", "endpoint_type"] |
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), |
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Msg, |
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): |
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__slots__ = () |
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class LoadFailed(namedtuple("LoadFailed", ["uri", "version", "error_msg"]), Msg): |
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__slots__ = () |
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class LoadInProgress( |
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namedtuple( |
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"LoadInProgress", ["uri", "path", "version", "is_update", "endpoint_type"] |
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), |
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Msg, |
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): |
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__slots__ = () |
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class Query(namedtuple("Query", ["uri", "params"]), Msg): |
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__slots__ = () |
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class QuerySuccessful( |
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namedtuple("QuerySuccessful", ["uri", "version", "response"]), Msg |
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): |
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__slots__ = () |
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class LoadObject( |
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namedtuple("LoadObject", ["uri", "url", "version", "is_update", "endpoint_type"]), |
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Msg, |
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): |
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__slots__ = () |
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class DeleteObjects(namedtuple("DeleteObjects", ["uris"]), Msg): |
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__slots__ = () |
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# Used for testing to flush out objects |
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class FlushObjects(namedtuple("FlushObjects", []), Msg): |
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__slots__ = () |
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class ObjectsDeleted(namedtuple("ObjectsDeleted", ["uris"]), Msg): |
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__slots__ = () |
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class ObjectsFlushed(namedtuple("ObjectsFlushed", ["n_before", "n_after"]), Msg): |
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__slots__ = () |
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class CountObjects(namedtuple("CountObjects", []), Msg): |
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__slots__ = () |
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class ObjectCount(namedtuple("ObjectCount", ["count"]), Msg): |
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__slots__ = () |
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class ListObjects(namedtuple("ListObjects", []), Msg): |
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__slots__ = () |
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class ObjectList(namedtuple("ObjectList", ["objects"]), Msg): |
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__slots__ = () |
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class UnknownURI(namedtuple("UnknownURI", ["uri"]), Msg): |
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__slots__ = () |
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class UnknownMessage(namedtuple("UnknownMessage", ["msg"]), Msg): |
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__slots__ = () |
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class DownloadSkipped( |
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namedtuple("DownloadSkipped", ["uri", "version", "msg", "host"]), Msg |
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): |
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__slots__ = () |
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class QueryFailed(namedtuple("QueryFailed", ["uri", "error"]), Msg): |
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__slots__ = () |
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class QueryError(namedtuple("QueryError", ["uri", "error"]), Msg): |
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__slots__ = () |
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class CheckHealth(namedtuple("CheckHealth", []), Msg): |
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__slots__ = () |
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class Healthy(namedtuple("Healthy", []), Msg): |
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__slots__ = () |
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class Unhealthy(namedtuple("Unhealthy", []), Msg): |
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__slots__ = () |
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class Ping(namedtuple("Ping", ["id"]), Msg): |
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__slots__ = () |
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class Pong(namedtuple("Pong", ["id"]), Msg): |
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__slots__ = () |
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class Listening(namedtuple("Listening", []), Msg): |
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__slots__ = () |
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class EngineFailure(namedtuple("EngineFailure", ["error"]), Msg): |
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__slots__ = () |
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class FlushLogs(namedtuple("FlushLogs", []), Msg): |
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__slots__ = () |
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class LogsFlushed(namedtuple("LogsFlushed", []), Msg): |
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__slots__ = () |
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class ServiceError(namedtuple("ServiceError", ["error"]), Msg): |
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__slots__ = () |
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tableau /
TabPy
