These changes make the `pulumi.runtime.invoke` function invokable in a synchronous manner. Because this function still needs to perform asynchronous work under the covers--namely awaiting a provider URN and ID if a provider instance is present in the `InvokeOptions`--this requires some creativity. This creativity comes in the form of a helper function, `_sync_await`, that performs a logical yield from the currently running event, manually runs the event loop until the given future completes, performs a logical resume back to the currently executing event, and returns the result of the future. The code in `_sync_await` is a bit scary, as it relies upon knowledge of (and functions in) the internals of the `asyncio` package. The necessary work performed in this function was derived from the implementations of `task_step` (which pointed out the need to call `_{enter,leave}_task`) and `BaseEventLoop.run_forever` (which illustrated how the event loop is pumped). In addition to potential breaking changes to these internals, the code may not work if a user has provided an alternative implementation for `EventLoop`. That said, the code is a close enough copy of `BaseEventLoop.run_forever` that it should be a reasonable solution.
64 lines
2.1 KiB
Python
64 lines
2.1 KiB
Python
# Copyright 2016-2018, Pulumi Corporation.
|
|
#
|
|
# Licensed 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 os import path
|
|
from ..util import LanghostTest
|
|
|
|
|
|
class TestInvoke(LanghostTest):
|
|
def test_invoke_success(self):
|
|
self.run_test(
|
|
program=path.join(self.base_path(), "invoke"),
|
|
expected_resource_count=2)
|
|
|
|
def invoke(self, _ctx, token, args, provider, _version):
|
|
self.assertEqual("test:index:MyFunction", token)
|
|
self.assertEqual("", provider)
|
|
self.assertDictEqual({
|
|
"value": 41,
|
|
"value2": 42,
|
|
}, args)
|
|
|
|
return [], {
|
|
"value": args["value"] + 1
|
|
}
|
|
|
|
def register_resource(self, _ctx, _dry_run, ty, name, resource, _deps,
|
|
_parent, _custom, _protect, _provider, _property_deps, _delete_before_replace,
|
|
_ignore_changes, _version):
|
|
self.assertEqual("test:index:MyResource", ty)
|
|
self.assertEqual(resource["value"], 42)
|
|
|
|
return {
|
|
"urn": self.make_urn(ty, name),
|
|
"id": name,
|
|
"object": resource,
|
|
}
|
|
|
|
|
|
class TestInvokeWithFailures(LanghostTest):
|
|
def test_invoke_failure(self):
|
|
self.run_test(
|
|
program=path.join(self.base_path(), "invoke"),
|
|
expected_resource_count=0,
|
|
expected_error="Program exited with non-zero exit code: 1")
|
|
|
|
def invoke(self, _ctx, token, args, _provider, _version):
|
|
self.assertEqual("test:index:MyFunction", token)
|
|
self.assertDictEqual({
|
|
"value": 41,
|
|
"value2": 42,
|
|
}, args)
|
|
|
|
return [{"property": "value", "reason": "the invoke failed"}], {}
|
|
|