@1mill/journal

Idempotently invoke AWS Lambda functions with Cloudevents.

Getting started

``bash
npm install @1mill/journal
`

`js
// * index.js
import { Locker, withIdempotency } from '@1mill/journal'

const locker = new Locker({
name: 'my-locker-db-name',
table: 'my-collection-name',
uri: 'mongodb://...:27017/',
})

const func = (cloudevent, ctx) => {
console.log('Running once: ', cloudevent)
return { cloudevent }
}

export const handler = async (cloudevent, ctx) => withIdempotency(cloudevent, ctx, { func, locker })
`

$3

| Name | Required | Types | Default | Environment | Description |
|--------------------|----------|--------|-----------------|-------------------------------------|-------------------------------------------------------|
| expireAfterSeconds | | number | 86400 (1 day) | MILL_JOURNAL_EXPIRE_AFTER_SECONDS | How long a Cloudevent idempotency key will keep-alive |
| name | yes | string | | MILL_JOURNAL_NAME | The name of the database itself |
| options | | object | {} | | Options pass to the database client |
| table | yes | string | | MILL_JOURNAL_TABLE | The name of the table inside the database |
| uri | yes | string | | MILL_JOURNAL_URI | URI to connect to database |

$3

| Name | Required | Types | Default | Environment | Description |
|--------------------|----------|----------|-----------------|-----------------------------------|----------------------------------------------------------------|
| func | yes | function | | | The function containing business logic that will run |
| locker | yes | Locker | | | The Locker` in which idempotency keys will be checked against |

References

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