Merge keyserver & userapi (#2972)

As discussed yesterday, a first draft of merging the keyserver and the
userapi.

userapi/storage/sqlite3/deltas/2022012016470000_key_changes.go

@@ -0,0 +1,66 @@
+// Copyright 2022 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 deltas
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+)
+
+func UpRefactorKeyChanges(ctx context.Context, tx *sql.Tx) error {
+	// start counting from the last max offset, else 0.
+	var maxOffset int64
+	var userID string
+	_ = tx.QueryRowContext(ctx, `SELECT user_id, MAX(log_offset) FROM keyserver_key_changes GROUP BY user_id`).Scan(&userID, &maxOffset)
+
+	_, err := tx.ExecContext(ctx, `
+		-- make the new table
+		DROP TABLE IF EXISTS keyserver_key_changes;
+		CREATE TABLE IF NOT EXISTS keyserver_key_changes (
+			change_id INTEGER PRIMARY KEY AUTOINCREMENT,
+			-- The key owner
+			user_id TEXT NOT NULL,
+			UNIQUE (user_id)
+		);
+	`)
+	if err != nil {
+		return fmt.Errorf("failed to execute upgrade: %w", err)
+	}
+	// to start counting from maxOffset, insert a row with that value
+	if userID != "" {
+		_, err = tx.ExecContext(ctx, `INSERT INTO keyserver_key_changes(change_id, user_id) VALUES($1, $2)`, maxOffset, userID)
+		return err
+	}
+	return nil
+}
+
+func DownRefactorKeyChanges(ctx context.Context, tx *sql.Tx) error {
+	_, err := tx.ExecContext(ctx, `
+	-- Drop all data and revert back, we can't keep the data as Kafka offsets determine the numbers
+	DROP TABLE IF EXISTS keyserver_key_changes;
+	CREATE TABLE IF NOT EXISTS keyserver_key_changes (
+		partition BIGINT NOT NULL,
+		offset BIGINT NOT NULL,
+		-- The key owner
+		user_id TEXT NOT NULL,
+		UNIQUE (partition, offset)
+	);
+	`)
+	if err != nil {
+		return fmt.Errorf("failed to execute downgrade: %w", err)
+	}
+	return nil
+}

userapi/storage/sqlite3/deltas/2022042612000000_xsigning_idx.go

@@ -0,0 +1,71 @@
+// Copyright 2022 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 deltas
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+)
+
+func UpFixCrossSigningSignatureIndexes(ctx context.Context, tx *sql.Tx) error {
+	_, err := tx.ExecContext(ctx, `
+		CREATE TABLE IF NOT EXISTS keyserver_cross_signing_sigs_tmp (
+			origin_user_id TEXT NOT NULL,
+			origin_key_id TEXT NOT NULL,
+			target_user_id TEXT NOT NULL,
+			target_key_id TEXT NOT NULL,
+			signature TEXT NOT NULL,
+			PRIMARY KEY (origin_user_id, origin_key_id, target_user_id, target_key_id)
+		);
+
+		INSERT INTO keyserver_cross_signing_sigs_tmp (origin_user_id, origin_key_id, target_user_id, target_key_id, signature)
+			SELECT origin_user_id, origin_key_id, target_user_id, target_key_id, signature FROM keyserver_cross_signing_sigs;
+
+		DROP TABLE keyserver_cross_signing_sigs;
+		ALTER TABLE keyserver_cross_signing_sigs_tmp RENAME TO keyserver_cross_signing_sigs;
+
+		CREATE INDEX IF NOT EXISTS keyserver_cross_signing_sigs_idx ON keyserver_cross_signing_sigs (origin_user_id, target_user_id, target_key_id);
+	`)
+	if err != nil {
+		return fmt.Errorf("failed to execute upgrade: %w", err)
+	}
+	return nil
+}
+
+func DownFixCrossSigningSignatureIndexes(ctx context.Context, tx *sql.Tx) error {
+	_, err := tx.ExecContext(ctx, `
+		CREATE TABLE IF NOT EXISTS keyserver_cross_signing_sigs_tmp (
+			origin_user_id TEXT NOT NULL,
+			origin_key_id TEXT NOT NULL,
+			target_user_id TEXT NOT NULL,
+			target_key_id TEXT NOT NULL,
+			signature TEXT NOT NULL,
+			PRIMARY KEY (origin_user_id, target_user_id, target_key_id)
+		);
+
+		INSERT INTO keyserver_cross_signing_sigs_tmp (origin_user_id, origin_key_id, target_user_id, target_key_id, signature)
+			SELECT origin_user_id, origin_key_id, target_user_id, target_key_id, signature FROM keyserver_cross_signing_sigs;
+
+		DROP TABLE keyserver_cross_signing_sigs;
+		ALTER TABLE keyserver_cross_signing_sigs_tmp RENAME TO keyserver_cross_signing_sigs;
+		
+		DELETE INDEX IF EXISTS keyserver_cross_signing_sigs_idx;
+	`)
+	if err != nil {
+		return fmt.Errorf("failed to execute downgrade: %w", err)
+	}
+	return nil
+}