Atek Database API

atek.cloud/adb-api

npm install @atek-cloud/adb-api

import adb from '@atek-cloud/adb-api'
import cats from 'example-cats-table'

// get or create a database under the 'mydb' alias
const db = adb.db('mydb')

// use the cats table
await cats(db).create({id: 'kit', name: 'Kit'})
await cats(db).list() // => {records: [{key: 'kit', value: {id: 'kit', name: 'Kit', createdAt: '2021-09-07T01:06:07.487Z'}}]}
await cats(db).get('kit') // => {key: 'kit', value: {id: 'kit', name: 'Kit', createdAt: '2021-09-07T01:06:07.487Z'}}
await cats(db).put('kit', {id: 'kit', name: 'Kitty'})
await cats(db).delete('kit')

See The Atek DB Guide to learn how to use ADB.

Default export properties

Name	Type
api	AdbApi & AtekRpcClient
db	(dbId: string | DbConfig, opts?: DbConfig) => AdbDatabase

Use the .db() method to create AdbDatabase instances. You may pass a Hypercore 64-character hex-string key or an arbitrary string (which will be a local alias).

import adb from '@atek-cloud/adb-api'

// get or create a database under the 'mydb' alias
// - the 'mydb' alias will be stored under this application for easy future access
const db = adb.db('mydb')

// get a database under its Hypercore key
// - if the database does not exist locally, its content will be fetched from the p2p network
const db2 = adb.db('97396e81e407e5ae7a64b375cc54c1fc1a0d417a5a72e2169b5377506e1e3163')

The .api is the RPC interface which will be used by .db().

Exported Functions

defineSchema

▸ defineSchema<T>(path, opts?): (db: AdbDatabase) => any

Parameters

Name	Type
path	string | string[]
opts?	AdbSchemaOpts

Returns

fn

▸ (db): any

Use this function to create reusable record schemas.

import adb, { defineSchema } from '@atek-cloud/adb-api`

interface CatRecord {
  id: string
  name: string
  createdAt: string
}

const cats = defineSchema<CatRecord>('example.com/cats', {
  pkey: '/id',
  jsonSchema: {
    type: 'object',
    required: ['id', 'name']
    properties: {
      id: {type: 'string'},
      name: {type: 'string'},
      createdAt: {type: 'string', format: 'date-time'}
    }
  }
})

await cats(adb.db('mydb')).create({
  id: 'kit',
  name: 'Kit the Cat'
})

---

createClient

▸ createClient(): AdbApi & AtekRpcClient

Returns

AdbApi & AtekRpcClient

Creates an AdbApi instance. You can typically use the .api exported on the default object, but if you need to configure a separate API instance you can use this function.

---

createServer

▸ createServer(handlers): AtekRpcServer

Parameters

Name	Type
handlers	any

Returns

AtekRpcServer

Creates an AtekRpcServer server. You would only ever need this if creating your own ADB server (perhaps for test mocking).

Class: AdbDatabase

Constructor

• new AdbDatabase(api, dbId, opts?)

Parameters

Name	Type
api	AdbApi
dbId	string
opts?	DbConfig

Properties

isReady

• isReady: Promise<any>

---

api

• api: AdbApi

---

dbId

• dbId: string

Methods

describe

▸ describe(): Promise<DbInfo>

desc Get metadata and information about the database.

Returns

Promise<DbInfo>

---

list

▸ list(path, opts?): Promise<Object>

desc List records in a table.

Parameters

Name	Type
path	string | string[]
opts?	ListOpts

Returns

Promise<Object>

---

get

▸ get(path): Promise<Record<object>>

desc Get a record in a table.

Parameters

Name	Type
path	string | string[]

Returns

Promise<Record<object>>

---

put

▸ put(path, value): Promise<Record<object>>

desc Write a record to a table.

Parameters

Name	Type
path	string | string[]
value	object

Returns

Promise<Record<object>>

---

delete

▸ delete(path): Promise<void>

desc Delete a record from a table.

Parameters

Name	Type
path	string | string[]

Returns

Promise<void>

Class: AdbSchema<T>

Type parameters

Name	Type
T	extends object

Constructor

• new AdbSchema<T>(db, path, opts?)

Type parameters

Name	Type
T	extends object

Parameters

Name	Type
db	AdbDatabase
path	string | string[]
opts?	AdbSchemaOpts

Properties

path

• path: string[]

---

isReady

• isReady: Promise<any>

---

pkey

• Optional pkey: string | string[]

---

pkeyFn

• pkeyFn: PkeyFunction

---

jsonSchema

• Optional jsonSchema: object

---

validator

• Optional validator: Validator

---

db

• db: AdbDatabase

Methods

list

▸ list(opts?): Promise<Object>

desc List records in the schema.

Parameters

Name	Type
opts?	ListOpts

Returns

Promise<Object>

---

get

▸ get(key, opts?): Promise<undefined | Record<T>>

desc Get a record in the schema space.

Parameters

Name	Type
key	string
opts?	ValidationOpts

Returns

Promise<undefined | Record<T>>

---

create

▸ create(value, opts?): Promise<undefined | Record<T>>

desc Add a record to the schema space.

Parameters

Name	Type
value	T
opts?	ValidationOpts

Returns

Promise<undefined | Record<T>>

---

put

▸ put(key, value, opts?): Promise<undefined | Record<T>>

desc Write a record to the schema space.

Parameters

Name	Type
key	string
value	T
opts?	ValidationOpts

Returns

Promise<undefined | Record<T>>

---

delete

▸ delete(key): Promise<void>

desc Delete a record from the schema space.

Parameters

Name	Type
key	string

Returns

Promise<void>

Interface: AdbSchemaOpts

Properties

pkey

• Optional pkey: string | string[]

---

jsonSchema

• Optional jsonSchema: object