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# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from .consumer import Consumer, ConsumerChain
from ...utils.formatting import json_dumps, yaml_dumps
class DeriveServiceTemplate(Consumer):
"""
Derives the service template from the presenter.
"""
def consume(self):
if self.context.presentation.presenter is None:
self.context.validation.report('DeriveServiceTemplate consumer: missing presenter')
return
if not hasattr(self.context.presentation.presenter, '_get_model'):
self.context.validation.report('DeriveServiceTemplate consumer: presenter does not'
' support "_get_model"')
return
self.context.modeling.template = \
self.context.presentation.presenter._get_model(self.context)
class CoerceServiceTemplateValues(Consumer):
"""
Coerces values in the service template.
"""
def consume(self):
self.topology.coerce(self.context.modeling.template, report_issues=True)
class ValidateServiceTemplate(Consumer):
"""
Validates the service template.
"""
def consume(self):
self.topology.validate(self.context.modeling.template)
class ServiceTemplate(ConsumerChain):
"""
Generates the service template from the presenter.
"""
def __init__(self, context):
super(ServiceTemplate, self).__init__(context, (DeriveServiceTemplate,
CoerceServiceTemplateValues,
ValidateServiceTemplate))
def dump(self):
if self.context.has_arg_switch('yaml'):
indent = self.context.get_arg_value_int('indent', 2)
raw = self.context.modeling.template_as_raw
self.context.write(yaml_dumps(raw, indent=indent))
elif self.context.has_arg_switch('json'):
indent = self.context.get_arg_value_int('indent', 2)
raw = self.context.modeling.template_as_raw
self.context.write(json_dumps(raw, indent=indent))
else:
self.context.write(self.topology.dump(self.context.modeling.template))
class Types(Consumer):
"""
Used to just dump the types.
"""
def dump(self):
if self.context.has_arg_switch('yaml'):
indent = self.context.get_arg_value_int('indent', 2)
raw = self.context.modeling.types_as_raw
self.context.write(yaml_dumps(raw, indent=indent))
elif self.context.has_arg_switch('json'):
indent = self.context.get_arg_value_int('indent', 2)
raw = self.context.modeling.types_as_raw
self.context.write(json_dumps(raw, indent=indent))
else:
self.topology.dump_types(self.context, self.context.modeling.template)
class InstantiateServiceInstance(Consumer):
"""
Instantiates the service template into a service instance.
"""
def consume(self):
if self.context.modeling.template is None:
self.context.validation.report('InstantiateServiceInstance consumer: missing service '
'template')
return
self.context.modeling.instance = self.topology.instantiate(
self.context.modeling.template,
inputs=dict(self.context.modeling.inputs)
)
class CoerceServiceInstanceValues(Consumer):
"""
Coerces values in the service instance.
"""
def consume(self):
self.topology.coerce(self.context.modeling.instance, report_issues=True)
class ValidateServiceInstance(Consumer):
"""
Validates the service instance.
"""
def consume(self):
self.topology.validate(self.context.modeling.instance)
class SatisfyRequirements(Consumer):
"""
Satisfies node requirements in the service instance.
"""
def consume(self):
self.topology.satisfy_requirements(self.context.modeling.instance)
class ValidateCapabilities(Consumer):
"""
Validates capabilities in the service instance.
"""
def consume(self):
self.topology.validate_capabilities(self.context.modeling.instance)
class FindHosts(Consumer):
"""
Find hosts for all nodes in the service instance.
"""
def consume(self):
self.topology.assign_hosts(self.context.modeling.instance)
class ConfigureOperations(Consumer):
"""
Configures all operations in the service instance.
"""
def consume(self):
self.topology.configure_operations(self.context.modeling.instance)
class ServiceInstance(ConsumerChain):
"""
Generates the service instance by instantiating the service template.
"""
def __init__(self, context):
super(ServiceInstance, self).__init__(context, (InstantiateServiceInstance,
CoerceServiceInstanceValues,
ValidateServiceInstance,
CoerceServiceInstanceValues,
SatisfyRequirements,
CoerceServiceInstanceValues,
ValidateCapabilities,
FindHosts,
ConfigureOperations,
CoerceServiceInstanceValues))
def dump(self):
if self.context.has_arg_switch('graph'):
self.context.modeling.instance.dump_graph()
elif self.context.has_arg_switch('yaml'):
indent = self.context.get_arg_value_int('indent', 2)
raw = self.context.modeling.instance_as_raw
self.context.write(yaml_dumps(raw, indent=indent))
elif self.context.has_arg_switch('json'):
indent = self.context.get_arg_value_int('indent', 2)
raw = self.context.modeling.instance_as_raw
self.context.write(json_dumps(raw, indent=indent))
else:
str_rep = self.topology.dump(self.context.modeling.instance)
self.context.write(str_rep)
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