def _parse_resource_selection(self, component, variable, index, data):
path = [
Keys.COMPONENTS, component, Keys.VARIABLES, variable,
Keys.REALIZATION,
"#%d" % index
]
destination = None
resources = []
for key, item in data.items():
if key == Keys.SELECT:
if not isinstance(item, list):
self._wrong_type(list, type(item), *(path + [key]))
continue
resources = item
elif key == Keys.AS:
if not isinstance(item, str):
self._wrong_type(str, type(item), *(path + [key]))
continue
destination = item
else:
self._ignore(*(path + [key]))
if not resources:
self._missing([Keys.SELECT], *path)
return ResourceSelection(destination, resources)
def test_given_a_component_with_a_variable_with_resource_selection(self):
self.assert_complete(
"components:\n"
" server:\n"
" provides_services: [ Wonderful ]\n"
" variables:\n"
" memory:\n"
" type: Text\n"
" values: [apache, nginx]\n"
" realization:\n"
" - select: \n"
" - apache_config.ini\n"
" - nginx_config.ini\n"
" as: config.ini\n"
"goals:\n"
" running:\n"
" - Wonderful\n",
expectations={
"services": ["Wonderful"],
"features": [],
"components": {
"server": {
"provided_services": ["Wonderful"],
"required_services": [],
"provided_features": [],
"required_features": [],
"implementation": None,
"variables": {
"memory": {
"values": ["apache", "nginx"],
"realization": [
ResourceSelection("config.ini", [
"apache_config.ini", "nginx_config.ini"
])
]
}
}
}
},
"goals": {
"services": ["Wonderful"],
"features": []
}
})
def test_select_a_specifc_resource(self):
self.create_template_file(component="server",
resource="apache_config.ini")
self.create_template_file(component="server",
resource="nginx_config.ini")
model = Model(
components=[
Component(name="server",
provided_services=[Service("Awesome")],
variables=[
Variable(
name="provider",
value_type=str,
values=["apache", "nginx"],
realization=[
ResourceSelection(
"server/config.ini",
[
"server/apache_config.ini",
"server/nginx_config.ini"
]
)
])
],
implementation=DockerFile("server/Dockerfile"))
],
goals=Goals(services=[Service("Awesome")]))
server = model.resolve("server")
configuration = Configuration(
model,
instances = [
Instance(name="server_0",
definition=server,
configuration=[(server.variables[0], "nginx")])
])
self.realize(configuration)
self.assert_exists("config_1/images/server_0/config.ini")
self.assert_does_not_exist("config_1/images/server_0/apache_config.ini")
def test_have_a_different_hash_from_a_selection_with_a_different_destination(
self):
other = ResourceSelection("something_different.txt", self._resources)
self.assertNotEqual(hash(self._selection), hash(other))
def test_have_a_different_hash_from_a_selection_with_different_resource(
self):
other = ResourceSelection(self._destination,
["resource_1.txt", "resource_2.txt"])
self.assertNotEqual(hash(self._selection), hash(other))
def test_have_the_same_hash_than_an_identical_resource(self):
twin = ResourceSelection(self._destination, self._resources)
self.assertEqual(hash(self._selection), hash(twin))
def test_equal_another_identical_selection(self):
twin = ResourceSelection(self._destination, self._resources)
self.assertEqual(self._selection, twin)
def test_differ_from_a_selection_with_a_different_resources(self):
other = ResourceSelection(self._destination,
["resource_1.txt", "resource_2.txt"])
self.assertNotEqual(self._selection, other)
def setUp(self):
self._destination = "file.txt"
self._resources = ["whatever.txt", "doesnt_matter.ini"]
self._selection = ResourceSelection(self._destination, self._resources)
