Relay integration to pinecone demos (#2955)

This extends the dendrite monolith for pinecone to integrate the s&f
features into the mobile apps.
Also makes a few tweaks to federation queueing/statistics to make some
edge cases more robust.

federationapi/internal/perform_test.go

@@ -123,6 +123,47 @@ func TestQueryRelayServers(t *testing.T) {
 	assert.Equal(t, len(relayServers), len(res.RelayServers))
 }
 
+func TestRemoveRelayServers(t *testing.T) {
+	testDB := test.NewInMemoryFederationDatabase()
+
+	server := gomatrixserverlib.ServerName("wakeup")
+	relayServers := []gomatrixserverlib.ServerName{"relay1", "relay2"}
+	err := testDB.P2PAddRelayServersForServer(context.Background(), server, relayServers)
+	assert.NoError(t, err)
+
+	cfg := config.FederationAPI{
+		Matrix: &config.Global{
+			SigningIdentity: gomatrixserverlib.SigningIdentity{
+				ServerName: "relay",
+			},
+		},
+	}
+	fedClient := &testFedClient{}
+	stats := statistics.NewStatistics(testDB, FailuresUntilBlacklist, FailuresUntilAssumedOffline)
+	queues := queue.NewOutgoingQueues(
+		testDB, process.NewProcessContext(),
+		false,
+		cfg.Matrix.ServerName, fedClient, nil, &stats,
+		nil,
+	)
+	fedAPI := NewFederationInternalAPI(
+		testDB, &cfg, nil, fedClient, &stats, nil, queues, nil,
+	)
+
+	req := api.P2PRemoveRelayServersRequest{
+		Server:       server,
+		RelayServers: []gomatrixserverlib.ServerName{"relay1"},
+	}
+	res := api.P2PRemoveRelayServersResponse{}
+	err = fedAPI.P2PRemoveRelayServers(context.Background(), &req, &res)
+	assert.NoError(t, err)
+
+	finalRelays, err := testDB.P2PGetRelayServersForServer(context.Background(), server)
+	assert.NoError(t, err)
+	assert.Equal(t, 1, len(finalRelays))
+	assert.Equal(t, gomatrixserverlib.ServerName("relay2"), finalRelays[0])
+}
+
 func TestPerformDirectoryLookup(t *testing.T) {
 	testDB := test.NewInMemoryFederationDatabase()