Add database migration script

We need to do a rename and copy because SQLite3 does not support column
addition and constraint changes to existing tables

data/migrations/2_single_msmt_file.sql

@@ -0,0 +1,164 @@
+-- +migrate Down
+-- +migrate StatementBegin
+
+PRAGMA foreign_keys=off;
+ALTER TABLE `measurements` RENAME TO `_measurements_new`;
+
+CREATE TABLE `measurements` (
+    `measurement_id` INTEGER PRIMARY KEY AUTOINCREMENT,
+    `test_name` VARCHAR(64) NOT NULL,
+    `measurement_start_time` DATETIME NOT NULL,
+    `measurement_runtime` REAL NOT NULL,
+
+    `measurement_is_done` TINYINT(1) NOT NULL,
+    `measurement_is_uploaded` TINYINT(1) NOT NULL,
+    `measurement_is_failed` TINYINT(1) NOT NULL,
+    `measurement_failure_msg` VARCHAR(255),
+    `measurement_is_upload_failed` TINYINT(1) NOT NULL,
+    `measurement_upload_failure_msg` VARCHAR(255),
+    `measurement_is_rerun` TINYINT(1) NOT NULL,
+    `report_id` VARCHAR(255),
+    `url_id` INTEGER,
+    `collector_measurement_id` INT(64),
+    `is_anomaly` TINYINT(1),
+    `test_keys` JSON NOT NULL,
+    `result_id` INTEGER NOT NULL,
+    `report_file_path` VARCHAR(260) NOT NULL,
+    CONSTRAINT `fk_result_id`
+      FOREIGN KEY (`result_id`)
+      REFERENCES `results`(`result_id`)
+      ON DELETE CASCADE,
+    FOREIGN KEY (`url_id`) REFERENCES `urls`(`url_id`)
+);
+
+INSERT INTO measurements (
+`measurement_id`,
+`test_name`,
+`measurement_start_time`,
+`measurement_runtime`,
+`measurement_is_done`,
+`measurement_is_uploaded`,
+`measurement_is_failed`,
+`measurement_failure_msg`,
+`measurement_is_upload_failed`,
+`measurement_upload_failure_msg`,
+`measurement_is_rerun`,
+`report_id`,
+`url_id`,
+`collector_measurement_id`,
+`is_anomaly`,
+`test_keys`,
+`result_id`,
+`report_file_path`
+)
+  SELECT `measurement_id`,
+`test_name`,
+`measurement_start_time`,
+`measurement_runtime`,
+`measurement_is_done`,
+`measurement_is_uploaded`,
+`measurement_is_failed`,
+`measurement_failure_msg`,
+`measurement_is_upload_failed`,
+`measurement_upload_failure_msg`,
+`measurement_is_rerun`,
+`report_id`,
+`url_id`,
+`collector_measurement_id`,
+`is_anomaly`,
+`test_keys`,
+`result_id`,
+`report_file_path`
+  FROM _measurements_new;
+
+DROP TABLE _measurements_new;
+
+PRAGMA foreign_keys=on;
+
+-- +migrate StatementEnd
+
+-- +migrate Up
+-- +migrate StatementBegin
+
+PRAGMA foreign_keys=off;
+
+-- SQLite3 does not support adding columns or dropping constraints, so we need
+-- to re-create the table and copy the data over.
+
+ALTER TABLE `measurements` RENAME TO `_measurements_old`;
+
+CREATE TABLE `measurements` (
+    `measurement_id` INTEGER PRIMARY KEY AUTOINCREMENT,
+    `test_name` VARCHAR(64) NOT NULL,
+    `measurement_start_time` DATETIME NOT NULL,
+    `measurement_runtime` REAL NOT NULL,
+
+    `measurement_is_done` TINYINT(1) NOT NULL,
+    `measurement_is_uploaded` TINYINT(1) NOT NULL,
+    `measurement_is_failed` TINYINT(1) NOT NULL,
+    `measurement_failure_msg` VARCHAR(255),
+    `measurement_is_upload_failed` TINYINT(1) NOT NULL,
+    `measurement_upload_failure_msg` VARCHAR(255),
+    `measurement_is_rerun` TINYINT(1) NOT NULL,
+    `report_id` VARCHAR(255),
+    `url_id` INTEGER,
+    `collector_measurement_id` INT(64),
+    `is_anomaly` TINYINT(1),
+    `test_keys` JSON NOT NULL,
+    `result_id` INTEGER NOT NULL,
+    `report_file_path` VARCHAR(260),
+    `measurement_file_path` TEXT,
+    CONSTRAINT `fk_result_id`
+      FOREIGN KEY (`result_id`)
+      REFERENCES `results`(`result_id`)
+      ON DELETE CASCADE,
+    FOREIGN KEY (`url_id`) REFERENCES `urls`(`url_id`)
+);
+
+INSERT INTO measurements (
+`measurement_id`,
+`test_name`,
+`measurement_start_time`,
+`measurement_runtime`,
+`measurement_is_done`,
+`measurement_is_uploaded`,
+`measurement_is_failed`,
+`measurement_failure_msg`,
+`measurement_is_upload_failed`,
+`measurement_upload_failure_msg`,
+`measurement_is_rerun`,
+`report_id`,
+`url_id`,
+`collector_measurement_id`,
+`is_anomaly`,
+`test_keys`,
+`result_id`,
+`report_file_path`,
+`measurement_file_path`
+)
+  SELECT `measurement_id`,
+`test_name`,
+`measurement_start_time`,
+`measurement_runtime`,
+`measurement_is_done`,
+`measurement_is_uploaded`,
+`measurement_is_failed`,
+`measurement_failure_msg`,
+`measurement_is_upload_failed`,
+`measurement_upload_failure_msg`,
+`measurement_is_rerun`,
+`report_id`,
+`url_id`,
+`collector_measurement_id`,
+`is_anomaly`,
+`test_keys`,
+`result_id`,
+`report_file_path`,
+NULL
+  FROM _measurements_old;
+
+DROP TABLE _measurements_old;
+
+PRAGMA foreign_keys=on;
+
+-- +migrate StatementEnd