feat: Create execution model

packages/backend/src/db/migrations/20220219093113_create_executions.ts

@@ -0,0 +1,15 @@
+import { Knex } from 'knex';
+
+export async function up(knex: Knex): Promise<void> {
+  return knex.schema.createTable('executions', (table) => {
+    table.increments('id');
+    table.integer('flow_id').references('id').inTable('flows');
+    table.boolean('test_run').notNullable().defaultTo(false);
+
+    table.timestamps(true, true);
+  });
+}
+
+export async function down(knex: Knex): Promise<void> {
+  return knex.schema.dropTable('executions');
+}

packages/backend/src/models/execution.ts

@@ -0,0 +1,33 @@
+import Base from './base';
+import Flow from './flow';
+
+class Execution extends Base {
+  id!: string;
+  flowId!: number;
+  testRun: boolean;
+
+  static tableName = 'executions';
+
+  static jsonSchema = {
+    type: 'object',
+
+    properties: {
+      id: { type: 'string' },
+      flowId: { type: 'integer' },
+      testRun: { type: 'boolean' },
+    },
+  };
+
+  static relationMappings = () => ({
+    flow: {
+      relation: Base.BelongsToOneRelation,
+      modelClass: Flow,
+      join: {
+        from: 'executions.flow_id',
+        to: 'flows.id',
+      },
+    },
+  });
+}
+
+export default Execution;