NYFED

.changeset/early-phones-smile.md

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+---
+'@chainlink/nyfed-adapter': major
+---
+
+NYFED

packages/sources/nyfed/README.md

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+# Chainlink External Adapter for nyfed
+
+This README will be generated automatically when code is merged to `main`. If you would like to generate a preview of the README, please run `yarn generate:readme nyfed`.

packages/sources/nyfed/package.json

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+{
+  "name": "@chainlink/nyfed-adapter",
+  "version": "0.0.0",
+  "description": "Chainlink nyfed adapter.",
+  "keywords": [
+    "Chainlink",
+    "LINK",
+    "blockchain",
+    "oracle",
+    "nyfed"
+  ],
+  "main": "dist/index.js",
+  "types": "dist/index.d.ts",
+  "files": [
+    "dist"
+  ],
+  "repository": {
+    "url": "https://github.com/smartcontractkit/external-adapters-js",
+    "type": "git"
+  },
+  "license": "MIT",
+  "scripts": {
+    "clean": "rm -rf dist && rm -f tsconfig.tsbuildinfo",
+    "prepack": "yarn build",
+    "build": "tsc -b",
+    "server": "node -e 'require(\"./index.js\").server()'",
+    "server:dist": "node -e 'require(\"./dist/index.js\").server()'",
+    "start": "yarn server:dist"
+  },
+  "devDependencies": {
+    "@types/jest": "27.5.2",
+    "@types/node": "16.18.119",
+    "nock": "13.5.5",
+    "typescript": "5.6.3"
+  },
+  "dependencies": {
+    "@chainlink/external-adapter-framework": "1.7.4",
+    "tslib": "2.4.1"
+  }
+}

packages/sources/nyfed/src/config/index.ts

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+import { AdapterConfig } from '@chainlink/external-adapter-framework/config'
+
+export const config = new AdapterConfig({
+  API_ENDPOINT: {
+    description: 'An API endpoint for Data Provider',
+    type: 'string',
+    default: 'https://markets.newyorkfed.org/api/rates/secured/all/latest.json',
+  },
+})

packages/sources/nyfed/src/endpoint/index.ts

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+export { endpoint as rate } from './rate'

packages/sources/nyfed/src/endpoint/rate.ts

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+import { AdapterEndpoint } from '@chainlink/external-adapter-framework/adapter'
+import { InputParameters } from '@chainlink/external-adapter-framework/validation'
+import { SingleNumberResultResponse } from '@chainlink/external-adapter-framework/util'
+import { config } from '../config'
+import { httpTransport } from '../transport/rate'
+
+export const inputParameters = new InputParameters(
+  {
+    symbol: {
+      required: true,
+      type: 'string',
+      description: 'Symbol of the rate you are looking for',
+    },
+  },
+  [
+    {
+      symbol: 'SOFR',
+    },
+  ],
+)
+
+export type BaseEndpointTypes = {
+  Parameters: typeof inputParameters.definition
+  Response: SingleNumberResultResponse
+  Settings: typeof config.settings
+}
+
+export const endpoint = new AdapterEndpoint({
+  name: 'rate',
+  transport: httpTransport,
+  inputParameters,
+})

packages/sources/nyfed/src/index.ts

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+import { expose, ServerInstance } from '@chainlink/external-adapter-framework'
+import { Adapter } from '@chainlink/external-adapter-framework/adapter'
+import { config } from './config'
+import { rate } from './endpoint'
+
+export const adapter = new Adapter({
+  defaultEndpoint: rate.name,
+  name: 'NYFED',
+  config,
+  endpoints: [rate],
+  rateLimiting: {
+    tiers: {
+      default: {
+        rateLimit1m: 6,
+        note: 'Reasonable limits',
+      },
+    },
+  },
+})
+
+export const server = (): Promise<ServerInstance | undefined> => expose(adapter)

packages/sources/nyfed/src/transport/rate.ts

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+import { HttpTransport } from '@chainlink/external-adapter-framework/transports'
+import { BaseEndpointTypes } from '../endpoint/rate'
+
+export interface ResponseSchema {
+  refRates: {
+    effectiveDate: string
+    type: string
+    percentRate?: number
+  }[]
+}
+
+export type HttpTransportTypes = BaseEndpointTypes & {
+  Provider: {
+    RequestBody: never
+    ResponseBody: ResponseSchema
+  }
+}
+export const httpTransport = new HttpTransport<HttpTransportTypes>({
+  prepareRequests: (params, config) => {
+    return params.map((param) => {
+      return {
+        params: [param],
+        request: {
+          baseURL: config.API_ENDPOINT,
+        },
+      }
+    })
+  },
+  parseResponse: (params, response) => {
+    if (!response.data) {
+      return params.map((param) => {
+        return {
+          params: param,
+          response: {
+            errorMessage: `The data provider didn't return any value`,
+            statusCode: 502,
+          },
+        }
+      })
+    }
+
+    return params.map((param) => {
+      const result = response.data.refRates.find(
+        (d) => d.type.toUpperCase() == param.symbol.toUpperCase(),
+      )
+      if (result?.percentRate == undefined) {
+        return {
+          params: param,
+          response: {
+            errorMessage: `The data provider didn't return any value for ${param.symbol}`,
+            statusCode: 502,
+          },
+        }
+      } else {
+        return {
+          params: param,
+          response: {
+            result: result.percentRate,
+            data: {
+              result: result.percentRate,
+            },
+            timestamps: {
+              providerIndicatedTimeUnixMs: result.effectiveDate
+                ? new Date(result.effectiveDate).getTime()
+                : undefined,
+            },
+          },
+        }
+      }
+    })
+  },
+})

packages/sources/nyfed/test-payload.json

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+{
+ "requests": [{
+  "symbol": "SOFR"
+ }]
+}

packages/sources/nyfed/test/integration/__snapshots__/adapter.test.ts.snap

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+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`execute rate endpoint should return success 1`] = `
+{
+  "data": {
+    "result": 4.59,
+  },
+  "result": 4.59,
+  "statusCode": 200,
+  "timestamps": {
+    "providerDataReceivedUnixMs": 978347471111,
+    "providerDataRequestedUnixMs": 978347471111,
+    "providerIndicatedTimeUnixMs": 1733356800000,
+  },
+}
+`;

packages/sources/nyfed/test/integration/adapter.test.ts

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+import {
+  TestAdapter,
+  setEnvVariables,
+} from '@chainlink/external-adapter-framework/util/testing-utils'
+import * as nock from 'nock'
+import { mockResponseSuccess } from './fixtures'
+
+describe('execute', () => {
+  let spy: jest.SpyInstance
+  let testAdapter: TestAdapter
+  let oldEnv: NodeJS.ProcessEnv
+
+  beforeAll(async () => {
+    oldEnv = JSON.parse(JSON.stringify(process.env))
+    process.env.API_ENDPOINT = 'http://fake-url'
+
+    const mockDate = new Date('2001-01-01T11:11:11.111Z')
+    spy = jest.spyOn(Date, 'now').mockReturnValue(mockDate.getTime())
+
+    const adapter = (await import('./../../src')).adapter
+    adapter.rateLimiting = undefined
+    testAdapter = await TestAdapter.startWithMockedCache(adapter, {
+      testAdapter: {} as TestAdapter<never>,
+    })
+  })
+
+  afterAll(async () => {
+    setEnvVariables(oldEnv)
+    await testAdapter.api.close()
+    nock.restore()
+    nock.cleanAll()
+    spy.mockRestore()
+  })
+
+  describe('rate endpoint', () => {
+    it('should return success', async () => {
+      mockResponseSuccess()
+      const response = await testAdapter.request({
+        symbol: 'SOFR',
+      })
+      expect(response.statusCode).toBe(200)
+      expect(response.json()).toMatchSnapshot()
+    })
+  })
+})

packages/sources/nyfed/test/integration/fixtures.ts

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+import nock from 'nock'
+
+export const mockResponseSuccess = (): nock.Scope =>
+  nock('http://fake-url', {
+    encodedQueryParams: true,
+  })
+    .get('/')
+    .reply(
+      200,
+      () => ({
+        refRates: [
+          {
+            effectiveDate: '2024-12-05',
+            type: 'SOFR',
+            percentRate: 4.59,
+            percentPercentile1: 4.55,
+            percentPercentile25: 4.57,
+            percentPercentile75: 4.65,
+            percentPercentile99: 4.68,
+            volumeInBillions: 2325,
+            revisionIndicator: '',
+          },
+        ],
+      }),
+      [
+        'Content-Type',
+        'application/json',
+        'Connection',
+        'close',
+        'Vary',
+        'Accept-Encoding',
+        'Vary',
+        'Origin',
+      ],
+    )
+    .persist()

packages/sources/nyfed/tsconfig.json

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+{
+  "extends": "../../tsconfig.base.json",
+  "compilerOptions": {
+    "outDir": "dist",
+    "rootDir": "src"
+  },
+  "include": ["src/**/*", "src/**/*.json"],
+  "exclude": ["dist", "**/*.spec.ts", "**/*.test.ts"]
+}

packages/sources/nyfed/tsconfig.test.json

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+{
+  "extends": "../../tsconfig.base.json",
+  "include": ["src/**/*", "**/test", "src/**/*.json"],
+  "compilerOptions": {
+    "noEmit": true
+  }
+}

packages/tsconfig.json

@@ -506,6 +506,9 @@
     {
       "path": "./sources/nikkei"
     },
+    {
+      "path": "./sources/nyfed"
+    },
     {
       "path": "./sources/oanda"
     },

packages/tsconfig.test.json

@@ -506,6 +506,9 @@
     {
       "path": "./sources/nikkei/tsconfig.test.json"
     },
+    {
+      "path": "./sources/nyfed/tsconfig.test.json"
+    },
     {
       "path": "./sources/oanda/tsconfig.test.json"
     },

yarn.lock

@@ -4922,6 +4922,19 @@ __metadata:
   languageName: unknown
   linkType: soft
 
+"@chainlink/nyfed-adapter@workspace:packages/sources/nyfed":
+  version: 0.0.0-use.local
+  resolution: "@chainlink/nyfed-adapter@workspace:packages/sources/nyfed"
+  dependencies:
+    "@chainlink/external-adapter-framework": "npm:1.7.4"
+    "@types/jest": "npm:27.5.2"
+    "@types/node": "npm:16.18.119"
+    nock: "npm:13.5.5"
+    tslib: "npm:2.4.1"
+    typescript: "npm:5.6.3"
+  languageName: unknown
+  linkType: soft
+
 "@chainlink/oanda-adapter@workspace:packages/sources/oanda":
   version: 0.0.0-use.local
   resolution: "@chainlink/oanda-adapter@workspace:packages/sources/oanda"