Revision a59d5fa1 lib/backend.py
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""" |
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def GetInstReasonFilename(instance_name): |
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"""Path of the file containing the reason of the instance status change. |
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@type instance_name: string |
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@param instance_name: The name of the instance |
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@rtype: string |
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@return: The path of the file |
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""" |
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return utils.PathJoin(pathutils.INSTANCE_REASON_DIR, instance_name) |
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class InstReason(object): |
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"""Class representing the reason for a change of state of a VM. |
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It is used to allow an easy serialization of the reason, so that it can be |
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written on a file. |
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""" |
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def __init__(self, source, text): |
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"""Initialize the class with all the required values. |
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@type text: string |
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@param text: The textual description of the reason for changing state |
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@type source: string |
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@param source: The source of the state change (RAPI, CLI, ...) |
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""" |
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self.source = source |
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self.text = text |
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def GetJson(self): |
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"""Get the JSON representation of the InstReason. |
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@rtype: string |
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@return : The JSON representation of the object |
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""" |
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return serializer.DumpJson(dict(source=self.source, text=self.text)) |
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def Store(self, instance_name): |
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"""Serialize on a file the reason for the last state change of an instance. |
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The exact location of the file depends on the name of the instance and on |
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the configuration of the Ganeti cluster defined at deploy time. |
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@type instance_name: string |
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@param instance_name: The name of the instance |
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@rtype: None |
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""" |
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filename = GetInstReasonFilename(instance_name) |
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utils.WriteFile(filename, data=self.GetJson()) |
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def _Fail(msg, *args, **kwargs): |
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"""Log an error and the raise an RPCFail exception. |
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