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third_party/gsutil/boto/ec2/instancestatus.py

+# Copyright (c) 2012 Mitch Garnaat http://garnaat.org/
+# Copyright (c) 2012 Amazon.com, Inc. or its affiliates.
+# All Rights Reserved
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish, dis-
+# tribute, sublicense, and/or sell copies of the Software, and to permit
+# persons to whom the Software is furnished to do so, subject to the fol-
+# lowing conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
+# ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
+# SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 
+# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+# IN THE SOFTWARE.
+
+class Details(dict):
+    """
+    A dict object that contains name/value pairs which provide
+    more detailed information about the status of the system
+    or the instance.
+    """
+
+    def startElement(self, name, attrs, connection):
+        return None
+
+    def endElement(self, name, value, connection):
+        if name == 'name':
+            self._name = value
+        elif name == 'status':
+            self[self._name] = value
+        else:
+            setattr(self, name, value)
+    
+class Event(object):
+    """
+    A status event for an instance.
+
+    :ivar code: A string indicating the event type.
+    :ivar description: A string describing the reason for the event.
+    :ivar not_before: A datestring describing the earliest time for
+        the event.
+    :ivar not_after: A datestring describing the latest time for
+        the event.
+    """
+
+    def __init__(self, code=None, description=None,
+                 not_before=None, not_after=None):
+        self.code = code
+        self.description = description
+        self.not_before = not_before
+        self.not_after = not_after
+        
+    def __repr__(self):
+        return 'Event:%s' % self.code
+
+    def startElement(self, name, attrs, connection):
+        return None
+
+    def endElement(self, name, value, connection):
+        if name == 'code':
+            self.code = value
+        elif name == 'description':
+            self.description = value
+        elif name == 'notBefore':
+            self.not_before = value
+        elif name == 'notAfter':
+            self.not_after = value
+        else:
+            setattr(self, name, value)
+
+class Status(object):
+    """
+    A generic Status object used for system status and instance status.
+
+    :ivar status: A string indicating overall status.
+    :ivar details: A dict containing name-value pairs which provide
+        more details about the current status.
+    """
+
+    def __init__(self, status=None, details=None):
+        self.status = status
+        if not details:
+            details = Details()
+        self.details = details
+        
+    def __repr__(self):
+        return 'Status:%s' % self.status
+
+    def startElement(self, name, attrs, connection):
+        if name == 'details':
+            return self.details
+        return None
+
+    def endElement(self, name, value, connection):
+        if name == 'status':
+            self.status = value
+        else:
+            setattr(self, name, value)
+
+class EventSet(list):
+    
+    def startElement(self, name, attrs, connection):
+        if name == 'item':
+            event = Event()
+            self.append(event)
+            return event
+        else:
+            return None
+
+    def endElement(self, name, value, connection):
+        setattr(self, name, value)
+
+class InstanceStatus(object):
+    """
+    Represents an EC2 Instance status as reported by
+    DescribeInstanceStatus request.
+
+    :ivar id: The instance identifier.
+    :ivar zone: The availability zone of the instance.
+    :ivar events: A list of events relevant to the instance.
+    :ivar state_code: An integer representing the current state
+        of the instance.
+    :ivar state_name: A string describing the current state
+        of the instance.
+    :ivar system_status: A Status object that reports impaired
+        functionality that stems from issues related to the systems
+        that support an instance, such as such as hardware failures
+        and network connectivity problems.
+    :ivar instance_status: A Status object that reports impaired
+        functionality that arises from problems internal to the instance.
+    """
+    
+    def __init__(self, id=None, zone=None, events=None,
+                 state_code=None, state_name=None):
+        self.id = id
+        self.zone = zone
+        self.events = events
+        self.state_code = state_code
+        self.state_name = state_name
+        self.system_status = Status()
+        self.instance_status = Status()
+
+    def __repr__(self):
+        return 'InstanceStatus:%s' % self.id
+
+    def startElement(self, name, attrs, connection):
+        if name == 'eventsSet':
+            self.events = EventSet()
+            return self.events
+        elif name == 'systemStatus':
+            return self.system_status
+        elif name == 'instanceStatus':
+            return self.instance_status
+        else:
+            return None
+
+    def endElement(self, name, value, connection):
+        if name == 'instanceId':
+            self.id = value
+        elif name == 'availabilityZone':
+            self.zone = value
+        elif name == 'code':
+            self.state_code = int(value)
+        elif name == 'name':
+            self.state_name = value
+        else:
+            setattr(self, name, value)
+
+class InstanceStatusSet(list):
+    """
+    A list object that contains the results of a call to
+    DescribeInstanceStatus request.  Each element of the
+    list will be an InstanceStatus object.
+
+    :ivar next_token: If the response was truncated by
+        the EC2 service, the next_token attribute of the
+        object will contain the string that needs to be
+        passed in to the next request to retrieve the next
+        set of results.
+    """
+
+    def __init__(self, connection=None):
+        list.__init__(self)
+        self.connection = connection
+        self.next_token = None
+    
+    def startElement(self, name, attrs, connection):
+        if name == 'item':
+            status = InstanceStatus()
+            self.append(status)
+            return status
+        else:
+            return None
+
+    def endElement(self, name, value, connection):
+        if name == 'NextToken':
+            self.next_token = value
+        setattr(self, name, value)
+