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X402 Credit Spend with Echo Balance #614
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15 changes: 15 additions & 0 deletions
15
...ages/app/control/prisma/migrations/20251023210535_x402_transaction_metadata/migration.sql
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,15 @@ | ||
| -- CreateTable | ||
| CREATE TABLE "x402_transaction_metadata" ( | ||
| "id" UUID NOT NULL, | ||
| "resourcePath" TEXT NOT NULL, | ||
| "resourceArgs" JSONB NOT NULL, | ||
| "resourceResponse" JSONB NOT NULL, | ||
| "resourceError" JSONB NOT NULL, | ||
| "createdAt" TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP, | ||
| "updatedAt" TIMESTAMPTZ NOT NULL, | ||
|
|
||
| CONSTRAINT "x402_transaction_metadata_pkey" PRIMARY KEY ("id") | ||
| ); | ||
|
|
||
| -- AddForeignKey | ||
| ALTER TABLE "transactions" ADD CONSTRAINT "transactions_id_fkey" FOREIGN KEY ("id") REFERENCES "x402_transaction_metadata"("id") ON DELETE CASCADE ON UPDATE CASCADE; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,92 @@ | ||
| import { Router } from 'express'; | ||
| import { checkBalance } from 'services/BalanceCheckService'; | ||
| import { Transaction, X402CreditHandlerInput } from 'types'; | ||
| import { X402CreditRequestService } from 'services/HandleX402CreditService'; | ||
| import { Decimal } from 'generated/prisma/runtime/library'; | ||
| import logger from 'logger'; | ||
| import { authenticateRequest } from 'auth'; | ||
| import { EscrowRequest } from 'middleware/transaction-escrow-middleware'; | ||
| import { prisma } from 'server'; | ||
| import { Response as ExpressResponse } from 'express'; | ||
| import { EchoDbService } from 'services/DbService'; | ||
|
|
||
| const x402Router: Router = Router(); | ||
|
|
||
| x402Router.post('/', async (req: EscrowRequest, res: ExpressResponse) => { | ||
| try { | ||
| const headers = req.headers as Record<string, string>; | ||
| const { processedHeaders, echoControlService } = await authenticateRequest( | ||
| headers, | ||
| prisma | ||
| ); | ||
|
|
||
| const dbService = new EchoDbService(prisma); | ||
|
|
||
| return handleApiX402CreditRequest({ | ||
| req, | ||
| res, | ||
| headers: processedHeaders, | ||
| echoControlService, | ||
| dbService, | ||
| }); | ||
| } catch (error) { | ||
| logger.error('Failed to handle X402 credit request', error); | ||
| return res.status(500).json({ error: 'Internal server error' }); | ||
| } | ||
| }); | ||
|
|
||
| export async function handleApiX402CreditRequest({ | ||
| req, | ||
| res, | ||
| headers, | ||
| echoControlService, | ||
| dbService, | ||
| }: X402CreditHandlerInput) { | ||
| try { | ||
| const handleX402CreditRequestService = new X402CreditRequestService({ | ||
| req, | ||
| res, | ||
| headers, | ||
| echoControlService, | ||
| dbService, | ||
| }); | ||
|
|
||
| const balanceCheckResult = await checkBalance(echoControlService); | ||
| const balanceCheckDecimal = new Decimal( | ||
| balanceCheckResult.effectiveBalance || 0 | ||
| ); | ||
|
|
||
| const x402RequestPrice = | ||
| await handleX402CreditRequestService.getX402RequestPrice(); | ||
| if (x402RequestPrice.gt(balanceCheckDecimal)) { | ||
| return res.status(402).json({ error: 'Insufficient balance' }); | ||
| } | ||
|
|
||
| const transaction: Transaction = { | ||
| metadata: { | ||
| resourcePath: req.body.resourcePath, | ||
| resourceArgs: req.body.resourceArgs, | ||
| resourceResponse: req.body.resourceResponse, | ||
| resourceError: req.body.resourceError, | ||
| }, | ||
| rawTransactionCost: x402RequestPrice, | ||
| status: 'success', | ||
| }; | ||
|
|
||
| const createdTransaction = await echoControlService.createTransaction( | ||
| transaction, | ||
| x402RequestPrice | ||
| ); | ||
| const response = | ||
| await handleX402CreditRequestService.executeX402RequestAndUpdateMetadata( | ||
| createdTransaction | ||
| ); | ||
|
|
||
| return res.status(response.status).json(response.body); | ||
| } catch (error) { | ||
| logger.error('Failed to handle X402 credit request', error); | ||
| return res.status(500).json({ error: 'Internal server error' }); | ||
| } | ||
| } | ||
|
|
||
| export { x402Router }; | ||
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