@buildable/client

Buildable is the easiest way to collect, stream, transform and action your backend system events. Buildable simplifies the process of communicating between services or cloud apps via events.

This library allows you to quickly and easily emit and listen on events via Node.js.

Setup

In order to use emit and listen on events, you'll need a Buildable account and Secret Key. Follow these steps:

1. Create an account at buildable.dev
2. Connect a Node.js Source within the Sources page
3. Copy the Secret Key from the Setup tab
4. Install the package (see below)
5. Start emitting your events

Install Package

Install the @buildable/client NPM package in your working code environment:

> npm install @buildable/client

Emitting Events

The emit requires:

1. event - The name of the event
2. payload - The data of the event

Once an event is emitted, it will be visible immediately in the Live Events feed in your Buildable developer dashboard.

Using NodeJS

const { createClient } = require('@buildable/client');

const client = createClient(process.env.BUILDABLE_SECRET_KEY);

client.emit("user.created", { 
  name: "John Doe"
});

Want to use cURL instead?

curl --location --request POST 'https://events.buildable.dev/emit' \
  --header 'X-Buildable-Secret: <YOUR SECRET KEY>' \
  --header 'Content-Type: application/json' \
  --data-raw '{
    "event": "user.created",
    "payload": {
      "name": "John Doe"
    }
}'

Listening on Events

What is a transaction?

A transaction is an action that can be triggered when an event is received. An event can have multiple transactions. Each transaction has:

1. An input value
2. An output value
3. A unique transaction key (txKey) per event

Transacting on custom events from your Node.JS source

const { createClient } = require('@buildable/client');

const client = createClient(process.env.BUILDABLE_SECRET_KEY);

// Transact on `user.created`
client.on("user.created", async ({ event, payload }) => {
  console.log("Receieved event with payload: ", payload);

  // Any value returned here will be set as the transaction's output
  return {
    success: true
  };
});

Transacting on platform events from your cloud app sources

When listening on events from cloud apps, simply add two additional options to the listener:

const { createClient } = require('@buildable/client');

const client = createClient(process.env.BUILDABLE_SECRET_KEY);

// Listen on `customer.created` from Stripe
client.on("customer.created", async ({ event, payload }) => {
  console.log("Receieved message with payload: ", payload);

  // Any value returned here will be set as the transaction's output
}, {
  platform: "stripe", // Platform name
  label: "my-stripe-connection" // Connection name
});

Multiple transactions on an event

In order to trigger multiple transactions on the same event, you must specify a custom transaction key (txKey). For example, if two services need to listen on the same event and trigger different custom logic, each service must pass a unique txKey to the listener.

const { createClient } = require('@buildable/client');

const client = createClient(process.env.BUILDABLE_SECRET_KEY);

// Transaction #1 on `user.created` from service A
client.on("user.created", async ({ event, payload }) => {
  // Set the notification.sent transaction output
  return await sendNotification(payload);
}, {
  txKey: "notification.sent"
});

// Transaction #2 on `user.created` from service B
client.on("user.created", async ({ event, payload }) => {
  // Set the salesforce.customer.created transaction output
  return await createCustomerOnSalesForce(payload);
}, {
  txKey: "salesforce.customer.created"
});

*By default, the txKey is set to sdk.{{EVENT_NAME}}

Transacting on historical events

In order to transact on events that have already been emitted in the past, simply pass in the additional configuration argument since. For example, to transact on messages from 10 days ago:

client.on("user.created", async ({ event, payload }) => {
  // Set the notification.sent transaction output
  return await sendNotification(payload);
}, {
  txKey: "notification.sent",
  since: Date.now() - (10 * 24 * 60 * 60 * 1000) // Since 10 days ago
});

API

Alternatively, you can use the Buildable API. Learn more about it at docs.buildable.dev

Need More Help?

💻 Website: https://buildable.dev

📄 Docs: https://docs.buildable.dev

💬 Discord: https://discord.com/invite/47AJ42Wzys

🐦 Twitter: https://twitter.com/BuildableHQ

License

© 2022, Buildable Technologies Inc. - Released under the MIT License