fix: integrate edge gateway in api until workers bindings available

packages/api/package.json

@@ -22,6 +22,7 @@
   },
   "dependencies": {
     "@supabase/postgrest-js": "^0.37.2",
+    "edge-gateway": "^1.5.5",
     "itty-router": "^2.4.5",
     "multiformats": "^9.6.4",
     "nanoid": "^3.1.30",
@@ -33,7 +34,6 @@
     "ava": "^3.15.0",
     "browser-env": "^3.3.0",
     "dotenv": "^16.0.0",
-    "edge-gateway": "^1.5.5",
     "esbuild": "^0.14.2",
     "execa": "^5.1.1",
     "git-rev-sync": "^3.0.1",

packages/api/src/env.js

@@ -56,6 +56,13 @@ export function envAll(request, env, ctx) {
 
   env.log = new Logging(request, env, ctx)
   env.log.time('request')
+
+  /**
+   * Add gateway environment
+   * will be removed once workers bindings are in place.
+   */
+  // @ts-ignore types not complete - Special inputs for Env
+  env.ipfsGateways = JSON.parse(env.IPFS_GATEWAYS)
 }
 
 /**

packages/api/src/perma-cache/post.js

@@ -7,6 +7,8 @@ import { JSONResponse } from '../utils/json-response.js'
 import { normalizeCid } from '../utils/cid.js'
 import { encodeKey } from './utils.js'
 
+import { gatewayIpfs } from 'edge-gateway/src/gateway.js'
+
 /**
  * @typedef {import('../env').Env} Env
  * @typedef {{ userId: string, r2Key: string, date: string }} Key
@@ -22,8 +24,9 @@ import { encodeKey } from './utils.js'
  *
  * @param {Request} request
  * @param {Env} env
+ * @param {import('..').Ctx} ctx
  */
-export async function permaCachePost(request, env) {
+export async function permaCachePost(request, env, ctx) {
   const sourceUrl = getSourceUrl(request, env)
   const normalizedUrl = getNormalizedUrl(sourceUrl, env)
   const r2Key = normalizedUrl.toString()
@@ -49,7 +52,7 @@ export async function permaCachePost(request, env) {
 
   if (!r2Object) {
     // Fetch Response from provided URL
-    const response = await getResponse(request, env, normalizedUrl)
+    const response = await getResponse(request, env, ctx, normalizedUrl)
     if (!response.ok) {
       throw new HTTPError(
         'Failed to get response from provided URL',
@@ -100,9 +103,12 @@ export async function permaCachePost(request, env) {
  * Fetch Response from provided URL.
  * @param {Request} request
  * @param {Env} env
+ * @param {import('..').Ctx} ctx
  * @param {URL} url
  */
-async function getResponse(request, env, url) {
+async function getResponse(request, env, ctx, url) {
+  // TODO: Wait for CF services support
+  /*
   const controller = new AbortController()
   const timer = setTimeout(() => controller.abort(), env.REQUEST_TIMEOUT)
   let response
@@ -120,6 +126,12 @@ async function getResponse(request, env, url) {
     clearTimeout(timer)
   }
   return response
+  */
+
+  request = new Request(url.toString())
+
+  // @ts-ignore Env does not match entirely
+  return await gatewayIpfs(request, env, ctx)
 }
 
 /**

packages/api/test/perma-cache-post.spec.js

@@ -174,7 +174,6 @@ const validateSuccessfulPut = async (t, url, body, responseTxt) => {
   const { normalizedUrl, sourceUrl } = getParsedUrl(url)
   t.is(body.url, sourceUrl)
   t.truthy(body.date)
-  t.falsy(body.deletedAt)
   t.truthy(body.size)
 
   // Validate KV

packages/api/wrangler.toml

@@ -24,14 +24,16 @@ zone_id = "c7795a0adce7609a95d62fec04705aff"    # nftstorage.link zone
 route = "api.nftstorage.link/*"
 kv_namespaces = [
   { binding = "PERMACACHE", id = "73fa71d7cadc4671b91a236cee82d502", preview_id = "73fa71d7cadc4671b91a236cee82d502" },
-  { binding = "PERMACACHE_HISTORY", id = "ed2c0aeb57eb4f72a7edf8e097efb3fa", preview_id = "ed2c0aeb57eb4f72a7edf8e097efb3fa" }
+  { binding = "PERMACACHE_HISTORY", id = "ed2c0aeb57eb4f72a7edf8e097efb3fa", preview_id = "ed2c0aeb57eb4f72a7edf8e097efb3fa" },
+  { binding = "DENYLIST", id = "785cf627e913468ca5319523ae929def" }
 ]
 
 [env.production.vars]
 DATABASE_URL = "https://nft-storage-pgrest-prod.herokuapp.com"
 DEBUG = "false"
 ENV = "production"
 GATEWAY_DOMAIN = "nftstorage.link"
+IPFS_GATEWAYS = "[\"https://ipfs.io\", \"https://cf.nftstorage.link\", \"https://nft-storage.mypinata.cloud/\"]"
 
 #[env.production.r2_buckets]
 #binding = "SUPERHOT"
@@ -45,14 +47,16 @@ zone_id = "c7795a0adce7609a95d62fec04705aff"    # nftstorage.link zone
 route = "api-staging.nftstorage.link/*"
 kv_namespaces = [
   { binding = "PERMACACHE", id = "de8e81e8107d4b2497dfa9e288f5dc8c", preview_id = "de8e81e8107d4b2497dfa9e288f5dc8c" },
-  { binding = "PERMACACHE_HISTORY", id = "bac8069051ee4796a305b4d3f366b930", preview_id = "bac8069051ee4796a305b4d3f366b930" }
+  { binding = "PERMACACHE_HISTORY", id = "bac8069051ee4796a305b4d3f366b930", preview_id = "bac8069051ee4796a305b4d3f366b930" },
+  { binding = "DENYLIST", id = "f4eb0eca32e14e28b643604a82e00cb3" }
 ]
 
 [env.staging.vars]
 DATABASE_URL = "https://nft-storage-pgrest-staging.herokuapp.com"
 DEBUG = "true"
 ENV = "staging"
 GATEWAY_DOMAIN = "nftstorage.link"
+IPFS_GATEWAYS = "[\"https://ipfs.io\", \"https://cf.nftstorage.link\", \"https://nft-storage.mypinata.cloud/\"]"
 
 [[env.staging.r2_buckets]]
 bucket_name = "super-hot"
@@ -61,12 +65,13 @@ binding = "SUPERHOT"
 # Test!
 [env.test]
 workers_dev = true
-kv_namespaces = [{ binding = "PERMACACHE" }, { binding = "PERMACACHE_HISTORY" }]
+kv_namespaces = [{ binding = "PERMACACHE" }, { binding = "PERMACACHE_HISTORY" }, { binding = "DENYLIST" }]
 
 [env.test.vars]
 DEBUG = "true"
 ENV = "test"
 GATEWAY_DOMAIN = "localhost:9081"
+IPFS_GATEWAYS = "[\"http://127.0.0.1:9081\"]"
 
 # Dev!
 [env.vsantos]

packages/edge-gateway/src/gateway.js

@@ -12,7 +12,6 @@ import { toDenyListAnchor } from './utils/deny-list.js'
 import {
   CIDS_TRACKER_ID,
   SUMMARY_METRICS_ID,
-  GATEWAY_RATE_LIMIT_ID,
   REDIRECT_COUNTER_METRICS_ID,
   CF_CACHE_MAX_OBJECT_SIZE,
   HTTP_STATUS_RATE_LIMITED,
@@ -29,6 +28,12 @@ import {
  * @property {boolean} [aborted]
  *
  * @typedef {import('./env').Env} Env
+ * @typedef {import('p-settle').PromiseResult<GatewayResponse>} PromiseResultGatewayResponse
+ *
+ * @typedef {Object} IPFSResolutionOptions
+ * @property {(response: Response, responseTime: number) => void} [onCdnResolution]
+ * @property {(winnerGwResponse: GatewayResponse, gatewayReqs: Promise<GatewayResponse>[], cid: string) => void} [onRaceResolution]
+ * @property {(gwResponses: PromiseResultGatewayResponse[], wasRateLimited: boolean) => void} [onRaceError]
  */
 
 /**
@@ -47,11 +52,57 @@ export async function gatewayGet(request, env, ctx) {
     )
   }
 
+  return await gatewayIpfs(request, env, ctx, {
+    onCdnResolution: (res, responseTime) => {
+      ctx.waitUntil(updateSummaryCacheMetrics(request, env, res, responseTime))
+    },
+    onRaceResolution: (winnerGwResponse, gatewayReqs, cid) => {
+      ctx.waitUntil(
+        (async () => {
+          await Promise.all([
+            storeWinnerGwResponse(request, env, winnerGwResponse),
+            settleGatewayRequests(
+              request,
+              env,
+              gatewayReqs,
+              winnerGwResponse.url,
+              cid
+            ),
+          ])
+        })()
+      )
+    },
+    onRaceError: (gwResponses, wasRateLimited) => {
+      ctx.waitUntil(
+        (async () => {
+          // Update metrics as all requests failed
+          await Promise.all(
+            gwResponses.map((r) =>
+              updateGatewayMetrics(request, env, r.value, false)
+            )
+          )
+          wasRateLimited && updateGatewayRedirectCounter(request, env)
+        })()
+      )
+    },
+  })
+}
+
+/**
+ * Perform edge gateway IPFS content resolution.
+ *
+ * @param {Request} request
+ * @param {Env} env
+ * @param {import('./index').Ctx} ctx
+ * @param {IPFSResolutionOptions} [options]
+ */
+export async function gatewayIpfs(request, env, ctx, options = {}) {
   const startTs = Date.now()
   const reqUrl = new URL(request.url)
   const cid = getCidFromSubdomainUrl(reqUrl)
   const pathname = reqUrl.pathname
 
+  // Validation layer
   if (env.DENYLIST) {
     const anchor = await toDenyListAnchor(cid)
     // TODO: Remove once https://github.com/nftstorage/nftstorage.link/issues/51 is fixed
@@ -69,59 +120,44 @@ export async function gatewayGet(request, env, ctx) {
     }
   }
 
+  // 1st layer resolution - CDN
   const cache = caches.default
   const res = await cache.match(request.url)
 
   if (res) {
     // Update cache metrics in background
     const responseTime = Date.now() - startTs
 
-    ctx.waitUntil(updateSummaryCacheMetrics(request, env, res, responseTime))
+    options.onCdnResolution && options.onCdnResolution(res, responseTime)
     return res
   }
 
-  // Prepare IPFS gateway requests
+  // 2nd layer resolution - Public Gateways race
   const gatewayReqs = env.ipfsGateways.map((gwUrl) =>
     gatewayFetch(gwUrl, cid, request, {
       pathname,
       timeout: env.REQUEST_TIMEOUT,
     })
   )
+
   try {
     /** @type {GatewayResponse} */
     const winnerGwResponse = await pAny(gatewayReqs, {
       filter: (res) => res.response?.ok,
     })
-
-    async function settleGatewayRequests() {
-      // Wait for remaining responses
-      const responses = await pSettle(gatewayReqs)
-      const successFullResponses = responses.filter(
-        (r) => r.value?.response?.ok
-      )
-
-      await Promise.all([
-        // Filter out winner and update remaining gateway metrics
-        ...responses
-          .filter((r) => r.value?.url !== winnerGwResponse.url)
-          .map((r) => updateGatewayMetrics(request, env, r.value, false)),
-        updateCidsTracker(request, env, successFullResponses, cid),
-      ])
-    }
-
+    options.onRaceResolution &&
+      options.onRaceResolution(winnerGwResponse, gatewayReqs, cid)
+    // Cache response
     ctx.waitUntil(
       (async () => {
         const contentLengthMb = Number(
           winnerGwResponse.response.headers.get('content-length')
         )
 
-        await Promise.all([
-          storeWinnerGwResponse(request, env, winnerGwResponse),
-          settleGatewayRequests(),
-          // Cache request URL in Cloudflare CDN if smaller than CF_CACHE_MAX_OBJECT_SIZE
-          contentLengthMb <= CF_CACHE_MAX_OBJECT_SIZE &&
-            cache.put(request.url, winnerGwResponse.response.clone()),
-        ])
+        // Cache request URL in Cloudflare CDN if smaller than CF_CACHE_MAX_OBJECT_SIZE
+        if (contentLengthMb <= CF_CACHE_MAX_OBJECT_SIZE) {
+          await cache.put(request.url, winnerGwResponse.response.clone())
+        }
       })()
     )
 
@@ -137,17 +173,7 @@ export async function gatewayGet(request, env, ctx) {
         r.value?.reason === REQUEST_PREVENTED_RATE_LIMIT_CODE
     )
 
-    ctx.waitUntil(
-      (async () => {
-        // Update metrics as all requests failed
-        await Promise.all(
-          responses.map((r) =>
-            updateGatewayMetrics(request, env, r.value, false)
-          )
-        )
-        wasRateLimited && updateGatewayRedirectCounter(request, env)
-      })()
-    )
+    options.onRaceError && options.onRaceError(responses, wasRateLimited)
 
     if (wasRateLimited) {
       const ipfsUrl = new URL('ipfs', env.ipfsGateways[0])
@@ -176,6 +202,35 @@ export async function gatewayGet(request, env, ctx) {
   }
 }
 
+/**
+ * Settle all gateway requests and update metrics.
+ *
+ * @param {Request} request
+ * @param {Env} env
+ * @param {Promise<GatewayResponse>[]} gatewayReqs
+ * @param {string} winnerUrl
+ * @param {string} cid
+ */
+async function settleGatewayRequests(
+  request,
+  env,
+  gatewayReqs,
+  winnerUrl,
+  cid
+) {
+  // Wait for remaining responses
+  const responses = await pSettle(gatewayReqs)
+  const successFullResponses = responses.filter((r) => r.value?.response?.ok)
+
+  await Promise.all([
+    // Filter out winner and update remaining gateway metrics
+    ...responses
+      .filter((r) => r.value?.url !== winnerUrl)
+      .map((r) => updateGatewayMetrics(request, env, r.value, false)),
+    updateCidsTracker(request, env, successFullResponses, cid),
+  ])
+}
+
 /**
  * Store metrics for winner gateway response
  *