fix: retry Filecoin.StateMinerInfo requests

Signed-off-by: Miroslav Bajtoš <oss@bajtos.net>

Author: bajtos

lib/miner-info.js

@@ -1,3 +1,4 @@
+import { retry } from '../vendor/deno-deps.js'
 import { RPC_URL, RPC_AUTH } from './constants.js'
 
 /**
@@ -6,7 +7,14 @@ import { RPC_URL, RPC_AUTH } from './constants.js'
  */
 export async function getMinerPeerId (minerId) {
   try {
-    const res = await rpc('Filecoin.StateMinerInfo', minerId, null)
+    const res = await retry(() => rpc('Filecoin.StateMinerInfo', minerId, null), {
+      // The maximum amount of attempts until failure.
+      maxAttempts: 5,
+      // The initial and minimum amount of milliseconds between attempts.
+      minTimeout: 5_000,
+      // How much to backoff after each retry.
+      multiplier: 1.5
+    })
     return res.PeerId
   } catch (err) {
     err.message = `Cannot obtain miner info for ${minerId}: ${err.message}`