Feature: Functions

ɳSelf includes a serverless runtime for running custom backend logic close to your data.

What's Included

Capability	Description
HTTP triggers	Run functions on HTTP requests
Event triggers	Respond to Hasura database events
Cron triggers	Schedule functions on a cron expression
TypeScript/JavaScript	Node.js runtime

How to Enable

nself service enable functions
nself build && nself restart

Or set in .env:

FUNCTIONS_ENABLED=true

Key Configuration Variables

Variable	Description	Default
FUNCTIONS_ENABLED	Enable Functions service	false
FUNCTIONS_PORT	Internal port	3000

Deploying Functions

Place function files in your project's functions/ directory. ɳSelf mounts this directory into the Functions container automatically.

my-project/
└── functions/
    ├── hello-world.ts
    └── send-email.ts

Functions are available at: https://functions.your-domain.com/v1/{function-name}

Event Triggers

Configure event triggers in the Hasura console or via Hasura migrations to call functions when database rows are inserted, updated, or deleted.

See Also

• cmd-service, enable/disable functions
• Config-Env-Vars, full env var reference
• Architecture, how functions integrate with the stack

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