Implement key uploads (#1202)

* Add storage layer for postgres/sqlite

* Return OTK counts when inserting new keys

* Hook up the key DB and make a test pass

* Convert postgres queries to be sqlite queries

* Blacklist test due to requiring rejected events

* Unbreak tests

* Update blacklist

keyserver/storage/postgres/storage.go

@@ -0,0 +1,42 @@
+// Copyright 2020 The Matrix.org Foundation C.I.C.
+//
+// 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.
+
+package postgres
+
+import (
+	"github.com/matrix-org/dendrite/internal/sqlutil"
+	"github.com/matrix-org/dendrite/keyserver/storage/shared"
+)
+
+// NewDatabase creates a new sync server database
+func NewDatabase(dbDataSourceName string, dbProperties sqlutil.DbProperties) (*shared.Database, error) {
+	var err error
+	db, err := sqlutil.Open("postgres", dbDataSourceName, dbProperties)
+	if err != nil {
+		return nil, err
+	}
+	otk, err := NewPostgresOneTimeKeysTable(db)
+	if err != nil {
+		return nil, err
+	}
+	dk, err := NewPostgresDeviceKeysTable(db)
+	if err != nil {
+		return nil, err
+	}
+	return &shared.Database{
+		DB:               db,
+		OneTimeKeysTable: otk,
+		DeviceKeysTable:  dk,
+	}, nil
+}