def _valid_signature_method():
"""
Check that the given signature method is correct.
@raise Ec2stackError: if the signature method is invalid.
"""
signature_method = get('SignatureMethod')
if signature_method not in ['HmacSHA1', 'HmacSHA256']:
errors.invalid_parameter_value(
'Value (%s) for parameter SignatureMethod is invalid. '
'Unknown signature method.' % signature_method
)
def _valid_signature_version():
"""
Checks that the given signature version is correct.
@raise Ec2stackError: if the signature version is invalid.
"""
signature_version = get('SignatureVersion')
if signature_version != '2':
errors.invalid_parameter_value(
'Value (%s) for parameter SignatureVersion is invalid.'
'Valid Signature versions are 2.'
% signature_version
)
def describe_image_attribute():
"""
Describes an image attribute.
@return: Response.
"""
image_id = helpers.get('ImageId')
attribute = helpers.get('Attribute')
supported_attribute_map = {'description': 'displaytext'}
if attribute not in supported_attribute_map.iterkeys():
errors.invalid_parameter_value(
'The specified attribute is not valid, please specify a valid ' +
'image attribute.')
response = describe_image_by_id(image_id)
return _describe_image_attribute_response(response, attribute,
supported_attribute_map)
def describe_image_attribute():
"""
Describes an image attribute.
@return: Response.
"""
image_id = helpers.get('ImageId')
attribute = helpers.get('Attribute')
supported_attribute_map = {
'description': 'displaytext'
}
if attribute not in supported_attribute_map.iterkeys():
errors.invalid_parameter_value(
'The specified attribute is not valid, please specify a valid ' +
'image attribute.'
)
response = describe_image_by_id(image_id)
return _describe_image_attribute_response(
response, attribute, supported_attribute_map)
def describe_instance_attribute():
"""
Describes an instance attribute.
@return: Response.
"""
instance_id = helpers.get('InstanceId')
attribute = helpers.get('Attribute')
supported_attribute_map = {
'instanceType': 'serviceofferingname',
'groupSet': 'securitygroup'
}
if attribute not in supported_attribute_map.iterkeys():
errors.invalid_parameter_value(
'The specified attribute is not valid, please specify a valid ' +
'instance attribute.')
response = describe_instance_by_id(instance_id)
return _describe_instance_attribute_response(response, attribute,
supported_attribute_map)
def describe_instance_attribute():
"""
Describes an instance attribute.
@return: Response.
"""
instance_id = helpers.get('InstanceId')
attribute = helpers.get('Attribute')
supported_attribute_map = {
'instanceType': 'serviceofferingname',
'groupSet': 'securitygroup'
}
if attribute not in supported_attribute_map.iterkeys():
errors.invalid_parameter_value(
'The specified attribute is not valid, please specify a valid ' +
'instance attribute.'
)
response = describe_instance_by_id(instance_id)
return _describe_instance_attribute_response(
response, attribute, supported_attribute_map)
