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feat(round-robin faciliator): Implementing round-robit selection

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Chris Troutner
2026-04-22 07:43:39 -07:00
parent 83fe6bf934
commit 5007b5f9cd
16 changed files with 472 additions and 578 deletions
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bin/server.js
+8 -13
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@@ -8,7 +8,7 @@ import express from 'express'
import cors from 'cors'
import dotenv from 'dotenv'
import { paymentMiddleware as x402PaymentMiddleware } from '@x402/express'
import { HTTPFacilitatorClient, x402ResourceServer } from '@x402/core/server'
import { x402ResourceServer } from '@x402/core/server'
import { registerExactEvmScheme } from '@x402/evm/exact/server'
import { fileURLToPath } from 'url'
@@ -21,6 +21,7 @@ import wlogger from '../src/adapters/wlogger.js'
import { buildX402Routes, getX402Settings, getBasicAuthSettings, createAuthHeader, getFacilitatorConnectionOptions } from '../src/config/x402.js'
import { basicAuthMiddleware } from '../src/middleware/basic-auth.js'
import DiscoveryRouter from '../src/controllers/discovery/router.js'
import { createFacilitatorClient } from '../src/lib/x402/facilitator-client-factory.js'
// Load environment variables
dotenv.config()
@@ -127,16 +128,13 @@ class Server {
const routes = buildX402Routes(this.config.apiPrefix)
const connectionOpts = getFacilitatorConnectionOptions()
const facilitatorClients = connectionOpts.map(o => new HTTPFacilitatorClient({
url: o.url,
createAuthHeaders: o.requiresAuth ? createAuthHeader : null
}))
const facilitator = createFacilitatorClient(connectionOpts, createAuthHeader)
wlogger.info(`x402 v2 middleware enabled with basic auth bypass; enforcing ${x402Settings.priceUSDC} USDC per request (unless basic auth provided) [facilitators: ${connectionOpts.map(o => o.name).join(', ')}]`)
wlogger.info(`x402 v2 middleware enabled with basic auth bypass; enforcing ${x402Settings.priceUSDC} USDC per request (unless basic auth provided) [facilitators: ${connectionOpts.map(o => o.name).join(', ')}] [settle strategy: ${facilitator.strategy}]`)
// x402 v2 exports use lowercase class names (x402ResourceServer).
// eslint-disable-next-line new-cap
const resourceServer = new x402ResourceServer(facilitatorClients)
const resourceServer = new x402ResourceServer(facilitator.client)
registerExactEvmScheme(resourceServer, {})
const x402Mw = x402PaymentMiddleware(routes, resourceServer)
@@ -154,15 +152,12 @@ class Server {
} else if (x402Settings.enabled && !basicAuthSettings.enabled) {
const routes = buildX402Routes(this.config.apiPrefix)
const connectionOpts = getFacilitatorConnectionOptions()
const facilitatorClients = connectionOpts.map(o => new HTTPFacilitatorClient({
url: o.url,
createAuthHeaders: o.requiresAuth ? createAuthHeader : null
}))
const facilitator = createFacilitatorClient(connectionOpts, createAuthHeader)
wlogger.info(`x402 v2 middleware enabled (basic auth disabled); enforcing ${x402Settings.priceUSDC} USDC per request [facilitators: ${connectionOpts.map(o => o.name).join(', ')}]`)
wlogger.info(`x402 v2 middleware enabled (basic auth disabled); enforcing ${x402Settings.priceUSDC} USDC per request [facilitators: ${connectionOpts.map(o => o.name).join(', ')}] [settle strategy: ${facilitator.strategy}]`)
// eslint-disable-next-line new-cap
const resourceServer = new x402ResourceServer(facilitatorClients)
const resourceServer = new x402ResourceServer(facilitator.client)
registerExactEvmScheme(resourceServer, {})
app.use(x402PaymentMiddleware(routes, resourceServer))
} else if (basicAuthSettings.enabled && !x402Settings.enabled) {