Add support for v0.11 GRPC services

This also refactors the client GRPC wrapper to dynamically load the
request objects.
All GRPC generated client files now live under lib/grpc_services

lib/grpc_services/wtclientrpc/wtclient_pb.rb

@@ -0,0 +1,75 @@
+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# source: wtclientrpc/wtclient.proto
+
+require 'google/protobuf'
+
+Google::Protobuf::DescriptorPool.generated_pool.build do
+  add_file("wtclientrpc/wtclient.proto", :syntax => :proto3) do
+    add_message "wtclientrpc.AddTowerRequest" do
+      optional :pubkey, :bytes, 1
+      optional :address, :string, 2
+    end
+    add_message "wtclientrpc.AddTowerResponse" do
+    end
+    add_message "wtclientrpc.RemoveTowerRequest" do
+      optional :pubkey, :bytes, 1
+      optional :address, :string, 2
+    end
+    add_message "wtclientrpc.RemoveTowerResponse" do
+    end
+    add_message "wtclientrpc.GetTowerInfoRequest" do
+      optional :pubkey, :bytes, 1
+      optional :include_sessions, :bool, 2
+    end
+    add_message "wtclientrpc.TowerSession" do
+      optional :num_backups, :uint32, 1
+      optional :num_pending_backups, :uint32, 2
+      optional :max_backups, :uint32, 3
+      optional :sweep_sat_per_byte, :uint32, 4
+    end
+    add_message "wtclientrpc.Tower" do
+      optional :pubkey, :bytes, 1
+      repeated :addresses, :string, 2
+      optional :active_session_candidate, :bool, 3
+      optional :num_sessions, :uint32, 4
+      repeated :sessions, :message, 5, "wtclientrpc.TowerSession"
+    end
+    add_message "wtclientrpc.ListTowersRequest" do
+      optional :include_sessions, :bool, 1
+    end
+    add_message "wtclientrpc.ListTowersResponse" do
+      repeated :towers, :message, 1, "wtclientrpc.Tower"
+    end
+    add_message "wtclientrpc.StatsRequest" do
+    end
+    add_message "wtclientrpc.StatsResponse" do
+      optional :num_backups, :uint32, 1
+      optional :num_pending_backups, :uint32, 2
+      optional :num_failed_backups, :uint32, 3
+      optional :num_sessions_acquired, :uint32, 4
+      optional :num_sessions_exhausted, :uint32, 5
+    end
+    add_message "wtclientrpc.PolicyRequest" do
+    end
+    add_message "wtclientrpc.PolicyResponse" do
+      optional :max_updates, :uint32, 1
+      optional :sweep_sat_per_byte, :uint32, 2
+    end
+  end
+end
+
+module Wtclientrpc
+  AddTowerRequest = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("wtclientrpc.AddTowerRequest").msgclass
+  AddTowerResponse = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("wtclientrpc.AddTowerResponse").msgclass
+  RemoveTowerRequest = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("wtclientrpc.RemoveTowerRequest").msgclass
+  RemoveTowerResponse = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("wtclientrpc.RemoveTowerResponse").msgclass
+  GetTowerInfoRequest = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("wtclientrpc.GetTowerInfoRequest").msgclass
+  TowerSession = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("wtclientrpc.TowerSession").msgclass
+  Tower = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("wtclientrpc.Tower").msgclass
+  ListTowersRequest = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("wtclientrpc.ListTowersRequest").msgclass
+  ListTowersResponse = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("wtclientrpc.ListTowersResponse").msgclass
+  StatsRequest = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("wtclientrpc.StatsRequest").msgclass
+  StatsResponse = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("wtclientrpc.StatsResponse").msgclass
+  PolicyRequest = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("wtclientrpc.PolicyRequest").msgclass
+  PolicyResponse = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("wtclientrpc.PolicyResponse").msgclass
+end

lib/grpc_services/wtclientrpc/wtclient_services_pb.rb

@@ -0,0 +1,43 @@
+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# Source: wtclientrpc/wtclient.proto for package 'wtclientrpc'
+
+require 'grpc'
+require 'wtclientrpc/wtclient_pb'
+
+module Wtclientrpc
+  module WatchtowerClient
+    # WatchtowerClient is a service that grants access to the watchtower client
+    # functionality of the daemon.
+    class Service
+
+      include GRPC::GenericService
+
+      self.marshal_class_method = :encode
+      self.unmarshal_class_method = :decode
+      self.service_name = 'wtclientrpc.WatchtowerClient'
+
+      #
+      # AddTower adds a new watchtower reachable at the given address and
+      # considers it for new sessions. If the watchtower already exists, then
+      # any new addresses included will be considered when dialing it for
+      # session negotiations and backups.
+      rpc :AddTower, AddTowerRequest, AddTowerResponse
+      #
+      # RemoveTower removes a watchtower from being considered for future session
+      # negotiations and from being used for any subsequent backups until it's added
+      # again. If an address is provided, then this RPC only serves as a way of
+      # removing the address from the watchtower instead.
+      rpc :RemoveTower, RemoveTowerRequest, RemoveTowerResponse
+      # ListTowers returns the list of watchtowers registered with the client.
+      rpc :ListTowers, ListTowersRequest, ListTowersResponse
+      # GetTowerInfo retrieves information for a registered watchtower.
+      rpc :GetTowerInfo, GetTowerInfoRequest, Tower
+      # Stats returns the in-memory statistics of the client since startup.
+      rpc :Stats, StatsRequest, StatsResponse
+      # Policy returns the active watchtower client policy configuration.
+      rpc :Policy, PolicyRequest, PolicyResponse
+    end
+
+    Stub = Service.rpc_stub_class
+  end
+end