refactor: resolve concordia rendezvous domain

packages/concordia-pinner/src/app.js

@@ -3,7 +3,7 @@ import _ from 'lodash';
 import isReachable from 'is-reachable';
 import { pinnerApiPort } from 'concordia-shared/src/environment/interpolated/pinner';
 import getWeb3ProviderUrl from 'concordia-shared/src/utils/web3';
-import getRendezvousUrl from 'concordia-shared/src/utils/rendezvous';
+import { getResolvedRendezvousUrl } from './utils/ipfsUtils';
 
 const POLLING_INTERVAL = 1000;
 
@@ -13,11 +13,17 @@ const responseBody = {
   },
   orbit: { identity: {}, databases: [] },
   web3: { url: getWeb3ProviderUrl(), reachable: false },
-  rendezvous: { url: getRendezvousUrl(), reachable: false },
+  rendezvous: { url: '', reachable: false },
   timestamp: 0,
 };
 
-async function getStats(orbit) {
+getResolvedRendezvousUrl().then(({ address }) => {
+  responseBody.rendezvous.url = address;
+});
+
+const getStats = async (orbit) => {
+  const { address: resolvedRendezvousUrl } = await getResolvedRendezvousUrl();
+
   try {
     // eslint-disable-next-line no-underscore-dangle
     const ipfs = orbit._ipfs;
@@ -29,7 +35,7 @@ async function getStats(orbit) {
     const orbitIdentity = orbit.identity;
     const databases = Object.keys(orbit.stores);
     const isWeb3Reachable = await isReachable(getWeb3ProviderUrl());
-    const isRendezvousReachable = await isReachable(getRendezvousUrl());
+    const isRendezvousReachable = await isReachable(resolvedRendezvousUrl.address);
     const timestamp = +new Date();
 
     responseBody.ipfs.id = id;
@@ -45,7 +51,7 @@ async function getStats(orbit) {
   } catch (err) {
     console.error('Error while getting stats:', err);
   }
-}
+};
 
 const startAPI = (orbit) => {
   const app = express();

packages/concordia-pinner/src/constants.js

@@ -1,6 +1,5 @@
 import path from 'path';
-import getBreezeConfiguration from 'concordia-shared/src/configuration/breezeConfiguration';
 
-export const swarmAddresses = getBreezeConfiguration().ipfs.config.Addresses.Swarm;
+const ORBIT_DIRECTORY_DEFAULT = path.join(__dirname, '..', 'orbitdb');
 
-export const ORBIT_DIRECTORY_DEFAULT = path.join(__dirname, '..', 'orbitdb');
+export default ORBIT_DIRECTORY_DEFAULT;

packages/concordia-pinner/src/index.js

@@ -5,9 +5,9 @@ import { contracts } from 'concordia-contracts';
 import { FORUM_CONTRACT } from 'concordia-shared/src/constants/contracts/ContractNames';
 import getWeb3ProviderUrl from 'concordia-shared/src/utils/web3';
 import { createOrbitInstance, getPeerDatabases, openKVDBs } from './utils/orbitUtils';
-import ipfsOptions from './options/ipfsOptions';
 import startAPI from './app';
 import downloadContractArtifacts from './utils/drizzleUtils';
+import getIpfsOptions from './options/ipfsOptions';
 
 process.on('unhandledRejection', (error) => {
   // This happens when attempting to initialize without any available Swarm addresses (e.g. Rendezvous)
@@ -68,7 +68,8 @@ const main = async () => {
   const web3 = new Web3(new Web3.providers.WebsocketProvider(getWeb3ProviderUrl()));
 
   getDeployedContract(web3)
-    .then(({ contract, contractAddress }) => IPFS.create(ipfsOptions)
+    .then(({ contract, contractAddress }) => getIpfsOptions()
+      .then((ipfsOptions) => IPFS.create(ipfsOptions))
       .then((ipfs) => createOrbitInstance(ipfs, contractAddress))
       .then((orbit) => openExistingUsersDatabases(contract, orbit)
         .then(() => {

packages/concordia-pinner/src/options/ipfsOptions.js

@@ -1,22 +1,25 @@
-import libp2pBundle from './libp2pBundle';
-import { swarmAddresses } from '../constants';
+import getLibp2pBundle from './libp2pBundle';
+import { getSwarmAddresses } from '../utils/ipfsUtils';
 
-export default {
-  repo: 'ipfs',
-  config: {
-    Profile: 'server',
-    Addresses: {
-      Swarm: swarmAddresses,
+const getIpfsOptions = async () => getSwarmAddresses()
+  .then((swarmAddresses) => ({
+    repo: 'ipfs',
+    config: {
+      Profile: 'server',
+      Addresses: {
+        Swarm: swarmAddresses,
+      },
     },
-  },
-  libp2p: libp2pBundle,
-  EXPERIMENTAL: {
-    pubsub: true,
-  },
-  preload: {
-    enabled: false,
-  },
-  init: {
-    emptyRepo: true,
-  },
-};
+    libp2p: getLibp2pBundle(swarmAddresses),
+    EXPERIMENTAL: {
+      pubsub: true,
+    },
+    preload: {
+      enabled: false,
+    },
+    init: {
+      emptyRepo: true,
+    },
+  }));
+
+export default getIpfsOptions;

packages/concordia-pinner/src/options/libp2pBundle.js

@@ -7,10 +7,9 @@ import Gossipsub from 'libp2p-gossipsub';
 import KadDHT from 'libp2p-kad-dht';
 import MPLEX from 'libp2p-mplex';
 import { NOISE } from 'libp2p-noise';
-import { swarmAddresses } from '../constants';
 
 // See also: https://github.com/libp2p/js-libp2p/blob/master/doc/CONFIGURATION.md
-export default (opts) => new Libp2p({
+const getLibp2pBundle = (swarmAddresses) => (opts) => new Libp2p({
   peerId: opts.peerId,
   addresses: {
     listen: swarmAddresses,
@@ -88,3 +87,5 @@ export default (opts) => new Libp2p({
     maxOldPeersRetention: 50,
   },
 });
+
+export default getLibp2pBundle;

packages/concordia-pinner/src/utils/ipfsUtils.js

@@ -0,0 +1,11 @@
+import dns from 'dns';
+import util from 'util';
+import { rendezvousHost, rendezvousPort } from 'concordia-shared/src/environment/interpolated/rendezvous';
+
+const dnsLookup = util.promisify(dns.lookup);
+
+export const getResolvedRendezvousUrl = async () => dnsLookup(rendezvousHost, { family: 4 })
+  .catch((error) => console.error(new Error(`DNS lookup of ${rendezvousHost} failed.\n${error}`)));
+
+export const getSwarmAddresses = async () => getResolvedRendezvousUrl()
+  .then((resolvedRendezvousUrl) => [`/ip4/${resolvedRendezvousUrl.address}/tcp/${rendezvousPort}/wss/p2p-webrtc-star`]);

packages/concordia-pinner/src/utils/orbitUtils.js

@@ -2,7 +2,7 @@ import OrbitDB from 'orbit-db';
 import Identities from 'orbit-db-identity-provider';
 import { EthereumContractIdentityProvider } from '@ezerous/eth-identity-provider';
 import Web3 from 'web3';
-import { ORBIT_DIRECTORY_DEFAULT } from '../constants';
+import ORBIT_DIRECTORY_DEFAULT from '../constants';
 
 // TODO: share code below with frontend (?)
 const determineDBAddress = async ({