Drizzle Team•8mo ago

How to share the transaction in multiple services?

Hi, This is more like a design question. I'm using Drizzle ORM in Express.js application. I have userService and auditService to update the database records. Before the database transaction, I basically call the services like this,

router.post('/', async (req, res) => {
  userService.create('john')
  auditService.log('Create user john')
})

router.post('/', async (req, res) => {
  userService.create('john')
  auditService.log('Create user john')
})

and then with the database transaction,

router.post('/', async (req, res) => {
  await db.transaction(async (tx) => {
    userService.create(tx, 'john')
    auditService.log(tx, 'Create user john')
  })
})

router.post('/', async (req, res) => {
  await db.transaction(async (tx) => {
    userService.create(tx, 'john')
    auditService.log(tx, 'Create user john')
  })
})

Note that in the above, I have to pass the tx transaction to every service function. Is there a more elegant way than passing the tx to every function?

2 Replies

Angelelz•8mo ago

This is the way, this is very elegant imo. This is dependency injection

Angelelz•8mo ago

Some people have suggested to use asynclocalstorage for this purpose but I honestly don't like it. You'll have to decide for yourself https://github.com/drizzle-team/drizzle-orm/issues/543

GitHub

[FEATURE]: AsyncLocalStorage for transactions · Issue #543 · drizzl...

Describe want to want The idea is to use AsyncLocalStorage for automatically detecting transaction context, without using transaction object. Example how it should look like: await db.transaction(a...

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How to share the transaction in multiple services?