Merge pull request #112 from connectedcars/cd/add-dry-run-print-state…

…ments-options

Add options dryRun and printStatements to assess what is actually going to run

src/mysql/migrate.ts

@@ -71,6 +71,8 @@ export interface MigrateOptions {
  cachePaths?: string[]
  ignoreCache?: boolean
  subdirectories?: string[]
+ printStatements?: boolean
+ dryRun?: boolean
 }
 
 export class Migrate {
@@ -85,7 +87,8 @@ export class Migrate {
  private timings: string[] = []
  private migrationsPaths: string[]
  private subdirectories?: string[]
-
+ private printStatements: boolean
+ private dryRun: boolean
  public constructor(options: MigrateOptions) {
  this.mysqlClient = options.mysqlClient
  this.migrationsPaths = options.migrationsPaths || ['./migrations']
@@ -96,6 +99,9 @@ export class Migrate {
  // Ignore so we don't et unhandled promise rejection
  })
  this.subdirectories = options.subdirectories
+
+ this.printStatements = options.printStatements ?? false
+ this.dryRun = options.dryRun ?? false
  }
 
  public async init(): Promise<void> {
@@ -280,6 +286,14 @@ export class Migrate {
  if (appliedMigrations.find(m => m.timestamp === migration.timestamp && m.name === migrationStatementName)) {
  continue
  }
+ if (this.printStatements) {
+ console.log(`${migration.path} to be applied on ${database}:\n${migrationStatement}\n`)
+ }
+
+ if (this.dryRun) {
+ continue
+ }
+
  await this.mysqlClient.query(connection, migrationStatement)
  await this.mysqlClient.query(connection, 'INSERT INTO `Migrations` (`timestamp`, `name`) VALUES (?, ?)', [
  migration.timestamp,