* refactor (controller): Use a grpc server for the grpc-gateway
This starts a grpc server for the grpc-gateway. The new gateway
server uses an in-memory listener which also supports "dialing", so
the http proxy can connect to the in-memory listener.
This change allows us to use all grpc server features and was in part
motivated by a need for an interceptor of inbound requests. With that
said, having a "proper" grpc server for the gateway will provide a lot
more flexibility and capabilities moving forward.
The request context will still be verified via middleware in the
http proxy (see wrapHandlerWithCommonFuncs). This verified context
will be serialized into a protobuf and sent along to the grpc-gateway
via metadata where an interceptor will add the verified request
info to the request's context (see requestCtxInterceptor). The
interceptor will verify the serialized request info via a shared ticket
with it's companion in-memory http proxy. FYI: the ticket is simply
random base62 string (see db.NewPrivateId).
This change also necessitated a minor change to services. We need to
return an empty response instead of nil, nil when there are no errors
and the response is empty.
* refactor (handlers): Rename gRPC Gateway filter
Originally, this was called an OutgoingInterceptor, which is an
unfortunate name since it's not an interceptor. Now that we're
refactoring the gateway stuff and have proper interceptors, renaming
this should remove ambiguity
* refactor: Rework how 204 with empty msg is handled
Recent changes to grpc gateway has necessitated a change to how
204s are handled by the gateway
* tests (bats): Check status codes for delete operations
Fixing the session passing around its key ID (which had previously been
blank) exposed another issue which was caught during bats tests:
WithKeyId statements using the wrong key, which prior to now had been
ignored because the argument was empty, resulting in an ineffective
option. This fixes those situations.
It also updates a bats test that didn't get updated in the CLI return
status PR.
* Sessions support for read:self and cancel:self permissions. This is automatic with fallback; no API change is needed.
* Strips out values from listing if only self actions are allowed on the resource and the user ID is different. This prevents a default ACL of id=*;type=session;actions=read:self,cancel:self from causing all values to be visible when listing.
* Adds an unprivileged user to development/testing instances. This user has only default permissions plus the ability to authorize sessions in the default target.
* tests: ensure default user can connect to default target and ensure created target has intended host sets
* docs: update readme for CLI tests with how to run against arbitrary clusters
* feat: override auth variables in CLI tests
Jim
Jeff Mitchell
Jeff Malnick