Add appointOracle RPC

packages/jellyfish-api-core/__tests__/category/oracle/appointOracle.test.ts

@@ -0,0 +1,100 @@
+import { MasterNodeRegTestContainer } from '@defichain/testcontainers'
+import { ContainerAdapterClient } from '../../container_adapter_client'
+import { UTXO } from '../../../src/category/oracle'
+import { RpcApiError } from '../../../src'
+
+describe('Oracle', () => {
+  const container = new MasterNodeRegTestContainer()
+  const client = new ContainerAdapterClient(container)
+
+  beforeAll(async () => {
+    await container.start()
+    await container.waitForReady()
+    await container.waitForWalletCoinbaseMaturity()
+  })
+
+  afterAll(async () => {
+    await container.stop()
+  })
+
+  it('should appointOracle', async () => {
+    const priceFeeds = [
+      { currency: 'USD', token: 'TESLA' },
+      { currency: 'EUR', token: 'APPLE' }
+    ]
+
+    const txid = await client.oracle.appointOracle(await container.getNewAddress(), priceFeeds, { weightage: 1 })
+
+    expect(typeof txid).toStrictEqual('string')
+    expect(txid.length).toStrictEqual(64)
+
+    await container.generate(1)
+
+    const result = await container.call('getoracledata', [txid])
+    expect(result).toStrictEqual(
+      {
+        weightage: 1,
+        oracleid: txid,
+        address: expect.any(String),
+        priceFeeds: [
+          { token: 'APPLE', currency: 'EUR' },
+          { token: 'TESLA', currency: 'USD' }
+        ],
+        tokenPrices: []
+      }
+    )
+  })
+
+  it('should appointOracle with utxos', async () => {
+    const priceFeeds = [
+      { currency: 'USD', token: 'TESLA' },
+      { currency: 'EUR', token: 'APPLE' }
+    ]
+
+    const address = await container.getNewAddress()
+    const utxos = await container.call('listunspent', [1, 9999999, [address], true])
+    const inputs: UTXO[] = utxos.map((utxo: UTXO) => {
+      return {
+        txid: utxo.txid,
+        vout: utxo.vout
+      }
+    })
+
+    const txid = await client.oracle.appointOracle(address, priceFeeds, { weightage: 1, utxos: inputs })
+
+    expect(typeof txid).toStrictEqual('string')
+    expect(txid.length).toStrictEqual(64)
+
+    await container.generate(1)
+
+    const result = await container.call('getoracledata', [txid])
+    expect(result).toStrictEqual(
+      {
+        weightage: 1,
+        oracleid: txid,
+        address: expect.any(String),
+        priceFeeds: [
+          { token: 'APPLE', currency: 'EUR' },
+          { token: 'TESLA', currency: 'USD' }
+        ],
+        tokenPrices: []
+      }
+    )
+  })
+
+  it('should not appointOracle with arbitrary utxos', async () => {
+    const priceFeeds = [
+      { currency: 'USD', token: 'TESLA' },
+      { currency: 'EUR', token: 'APPLE' }
+    ]
+
+    const { txid, vout } = await container.fundAddress(await container.getNewAddress(), 10)
+    const promise = client.oracle.appointOracle(await container.getNewAddress(), priceFeeds, {
+      weightage: 1,
+      utxos: [{ txid, vout }]
+    })
+
+    await expect(promise).rejects.toThrow(RpcApiError)
+    await expect(promise).rejects.toThrow('RpcApiError: \'Test AppointOracleTx execution failed:\ntx not from foundation member\', code: -32600, method: appointoracle')
+  })
+})

packages/jellyfish-api-core/src/category/oracle.ts

@@ -0,0 +1,44 @@
+import { ApiClient } from '../.'
+
+/**
+ * Oracle RPCs for DeFi Blockchain
+ */
+export class Oracle {
+  private readonly client: ApiClient
+
+  constructor (client: ApiClient) {
+    this.client = client
+  }
+
+  /**
+   * Creates a price oracle for rely of real time price data.
+   *
+   * @param {string} address
+   * @param {PriceFeed[]} priceFeeds
+   * @param {AppointOracleOptions} [options]
+   * @param {number} options.weightage
+   * @param {UTXO[]} [options.utxos = []]
+   * @param {string} [options.utxos.txid]
+   * @param {number} [options.utxos.vout]
+   * @return {Promise<string>}
+   */
+  async appointOracle (address: string, priceFeeds: PriceFeed[], options: AppointOracleOptions = {}): Promise<string> {
+    const { utxos = [] } = options
+    return await this.client.call('appointoracle', [address, priceFeeds, options.weightage, utxos], 'number')
+  }
+}
+
+export interface PriceFeed {
+  currency: string
+  token: string
+}
+
+export interface AppointOracleOptions {
+  weightage?: number
+  utxos?: UTXO[]
+}
+
+export interface UTXO {
+  txid: string
+  vout: number
+}

packages/jellyfish-api-core/src/index.ts

@@ -7,6 +7,7 @@ import { Wallet } from './category/wallet'
 import { Account } from './category/account'
 import { PoolPair } from './category/poolpair'
 import { Token } from './category/token'
+import { Oracle } from './category/oracle'
 import { Server } from './category/server'
 
 export * from '@defichain/jellyfish-json'
@@ -19,6 +20,7 @@ export * as wallet from './category/wallet'
 export * as poolpair from './category/poolpair'
 export * as token from './category/token'
 export * as account from './category/account'
+export * as oracle from './category/oracle'
 export * as server from './category/server'
 
 /**
@@ -33,6 +35,7 @@ export abstract class ApiClient {
   public readonly account = new Account(this)
   public readonly poolpair = new PoolPair(this)
   public readonly token = new Token(this)
+  public readonly oracle = new Oracle(this)
   public readonly server = new Server(this)
 
   /**

website/docs/jellyfish/api/oracle.md

@@ -0,0 +1,38 @@
+---
+id: oracle
+title: Oracle API
+sidebar_label: Oracle API
+slug: /jellyfish/api/oracle
+---
+
+```js
+import {Client} from '@defichain/jellyfish'
+const client = new Client()
+// Using client.oracle.
+const something = await client.oracle.method()
+```
+
+## appointOracle
+
+Creates a price oracle for rely of real time price data.
+
+```ts title="client.oracle.appointOracle()"
+interface oracle {
+  appointOracle (address: string, priceFeeds: PriceFeed[], options: AppointOracleOptions = {}): Promise<string>
+}
+
+interface PriceFeed {
+  currency: string
+  token: string
+}
+
+interface AppointOracleOptions {
+  weightage?: number
+  utxos?: UTXO[]
+}
+
+interface UTXO {
+  txid: string
+  vout: number
+}
+```

website/sidebars.js

@@ -16,6 +16,8 @@ module.exports = {
         'jellyfish/api/poolpair',
         'jellyfish/api/token',
         'jellyfish/api/account',
+        'jellyfish/api/oracle',
+        'jellyfish/api/account',
         'jellyfish/api/server'
       ]
     }