From be62e909102b5b9847ee207720aec1310e2ea902 Mon Sep 17 00:00:00 2001
From: aristides <aristides.staffieri@stellar.org>
Date: Fri, 5 Jan 2024 14:06:58 -0700
Subject: [PATCH] Adds cors open to all origins (#16)

* adds cors open to all origins, fixes error helper for broader error cases

* tweaks test for async update to init api
---
 package.json                 |  1 +
 src/helper/test-helper.ts    |  2 +-
 src/index.ts                 |  2 +-
 src/route/index.ts           |  6 +++++-
 src/service/mercury/index.ts | 11 ++++++++++-
 yarn.lock                    | 20 ++++++++++++++++++++
 6 files changed, 38 insertions(+), 4 deletions(-)

diff --git a/package.json b/package.json
index 87b1fd1..4d51d88 100644
--- a/package.json
+++ b/package.json
@@ -29,6 +29,7 @@
     "node": ">=18.12.0"
   },
   "dependencies": {
+    "@fastify/cors": "^8.5.0",
     "@fastify/helmet": "^11.1.1",
     "@fastify/rate-limit": "^8.0.3",
     "@urql/core": "^4.1.3",
diff --git a/src/helper/test-helper.ts b/src/helper/test-helper.ts
index 63743e0..cd90429 100644
--- a/src/helper/test-helper.ts
+++ b/src/helper/test-helper.ts
@@ -278,7 +278,7 @@ jest
     }
   );
 async function getDevServer() {
-  const server = initApiServer(mockMercuryClient, testLogger, register);
+  const server = await initApiServer(mockMercuryClient, testLogger, register);
   await server.listen();
   return server;
 }
diff --git a/src/index.ts b/src/index.ts
index 7da0873..aabc25d 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -92,7 +92,7 @@ async function main() {
     register,
     redis
   );
-  const server = initApiServer(mercuryClient, logger, register, redis);
+  const server = await initApiServer(mercuryClient, logger, register, redis);
 
   try {
     await server.listen({ port, host: "0.0.0.0" });
diff --git a/src/route/index.ts b/src/route/index.ts
index 0850eae..66d3fbf 100644
--- a/src/route/index.ts
+++ b/src/route/index.ts
@@ -1,6 +1,7 @@
 import Fastify, { FastifyRequest } from "fastify";
 import helmet from "@fastify/helmet";
 import rateLimiter from "@fastify/rate-limit";
+import cors from "@fastify/cors";
 import { Logger } from "pino";
 import { Redis } from "ioredis";
 import Prometheus from "prom-client";
@@ -28,7 +29,7 @@ import { buildTransfer, simulateTx } from "../helper/soroban-rpc";
 
 const API_VERSION = "v1";
 
-export function initApiServer(
+export async function initApiServer(
   mercuryClient: MercuryClient,
   logger: Logger,
   register: Prometheus.Registry,
@@ -47,6 +48,9 @@ export function initApiServer(
   });
 
   server.register(helmet, { global: true });
+  await server.register(cors, {
+    origin: "*",
+  });
   server.register(
     (instance, _opts, next) => {
       instance.route({
diff --git a/src/service/mercury/index.ts b/src/service/mercury/index.ts
index e1a5f52..f6731c4 100644
--- a/src/service/mercury/index.ts
+++ b/src/service/mercury/index.ts
@@ -40,7 +40,16 @@ const ERROR_MESSAGES = {
 function getGraphQlError(error?: CombinedError) {
   if (!error) return;
   const [err] = error.graphQLErrors;
-  return err.message;
+
+  if (err) {
+    return err.message;
+  }
+
+  if (error.networkError) {
+    return error.networkError.message;
+  }
+
+  return JSON.stringify(error);
 }
 
 const hasIndexerSupport = (network: NetworkNames) => {
diff --git a/yarn.lock b/yarn.lock
index caf58f4..96aee39 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -398,6 +398,14 @@
     ajv-formats "^2.1.1"
     fast-uri "^2.0.0"
 
+"@fastify/cors@^8.5.0":
+  version "8.5.0"
+  resolved "https://registry.yarnpkg.com/@fastify/cors/-/cors-8.5.0.tgz#4e9be0d72bfaa63e0918fd43dedd046d9fb1c0d4"
+  integrity sha512-/oZ1QSb02XjP0IK1U0IXktEsw/dUBTxJOW7IpIeO8c/tNalw/KjoNSJv1Sf6eqoBPO+TDGkifq6ynFK3v68HFQ==
+  dependencies:
+    fastify-plugin "^4.0.0"
+    mnemonist "0.39.6"
+
 "@fastify/deepmerge@^1.0.0":
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/@fastify/deepmerge/-/deepmerge-1.3.0.tgz#8116858108f0c7d9fd460d05a7d637a13fe3239a"
@@ -2818,6 +2826,13 @@ minimist@^1.2.6:
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.8.tgz#c1a464e7693302e082a075cee0c057741ac4772c"
   integrity sha512-2yyAR8qBkN3YuheJanUpWC5U3bb5osDywNB8RzDVlDwDHbocAJveqqj1u8+SVD7jkWT4yvsHCpWqqWqAxb0zCA==
 
+mnemonist@0.39.6:
+  version "0.39.6"
+  resolved "https://registry.yarnpkg.com/mnemonist/-/mnemonist-0.39.6.tgz#0b3c9b7381d9edf6ce1957e74b25a8ad25732f57"
+  integrity sha512-A/0v5Z59y63US00cRSLiloEIw3t5G+MiKz4BhX21FI+YBJXBOGW0ohFxTxO08dsOYlzxo87T7vGfZKYp2bcAWA==
+  dependencies:
+    obliterator "^2.0.1"
+
 mri@^1.1.4:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/mri/-/mri-1.2.0.tgz#6721480fec2a11a4889861115a48b6cbe7cc8f0b"
@@ -2895,6 +2910,11 @@ npm-run-path@^5.1.0:
   dependencies:
     path-key "^4.0.0"
 
+obliterator@^2.0.1:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/obliterator/-/obliterator-2.0.4.tgz#fa650e019b2d075d745e44f1effeb13a2adbe816"
+  integrity sha512-lgHwxlxV1qIg1Eap7LgIeoBWIMFibOjbrYPIPJZcI1mmGAI2m3lNYpK12Y+GBdPQ0U1hRwSord7GIaawz962qQ==
+
 on-exit-leak-free@^2.1.0:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/on-exit-leak-free/-/on-exit-leak-free-2.1.2.tgz#fed195c9ebddb7d9e4c3842f93f281ac8dadd3b8"