Reconnect on failure

modified: package.json modified: src/apply.ts
subsquid · Sep 10, 2024 · 0e6b5f4 · 0e6b5f4
1 parent 1ae28f4
commit 0e6b5f4
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Showing 2 changed files with 28 additions and 4 deletions.
diff --git a/package.json b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@subsquid/hasura-configuration",
   "description": "Hasura configuration tool for use in SQD indexers",
-  "version": "1.0.1",
+  "version": "1.0.2",
   "license": "GPL-3.0-or-later",
   "repository": {
     "type": "git",

diff --git a/src/apply.ts b/src/apply.ts
@@ -9,15 +9,35 @@ import {CONFIG_PATH, HASURA_GRAPHQL_ENDPOINT, getHasuraHttpHeaders} from "./comm
 const HASURA_HTTP_HEADERS = getHasuraHttpHeaders()
 
 
+const hasuraApiUrl: string = `${HASURA_GRAPHQL_ENDPOINT}/v1/metadata`
+
+
 runProgram(async () => {
     program.description(`Apply the configuration at ${CONFIG_PATH}`).parse()
 
     await registerTsNodeIfRequired()
 
     const config: any = JSON.parse(fs.readFileSync(CONFIG_PATH).toString())
-    const hasuraApiUrl: string = `${HASURA_GRAPHQL_ENDPOINT}/v1/metadata`
 
-    await axios.post(
+    let status: string | undefined
+    for (let timeout of [0, 1000, 3000]) {
+        await sleep(timeout)
+        status = await replaceHasuraMetadata(config)
+        if (status === 'OK') break
+    }
+
+    if (status !== 'OK') {
+        console.error('Failed to connect to Hasura after three attempts')
+        process.exit(1)
+    }
+})
+
+function sleep(ms: number) {
+    return new Promise(resolve => setTimeout(resolve, ms));
+}
+
+async function replaceHasuraMetadata(config: any): Promise<string | undefined> {
+    return await axios.post(
         hasuraApiUrl,
         {
             type: 'replace_metadata',
@@ -32,20 +52,24 @@ runProgram(async () => {
     .then(res => {
         if (res.status === 200) {
             console.log('Hasura configuration replaced successfully')
+            return 'OK'
         }
         else {
             console.error(`Got HTTP ${res.status}: ${res.data.error}`)
             if (res.data.error === 'cannot continue due to inconsistent metadata') {
                 console.error('Hint: this can be caused by database schema not being up to date')
             }
+            return `${res.status}`
         }
     })
     .catch(e => {
         if (e.code === 'ECONNREFUSED') {
             console.error(`Could not connect to Hasura at ${hasuraApiUrl}`)
+            return 'ECONNREFUSED'
         }
         else {
             console.error(`Unknown Axios error`, e)
+            return undefined
         }
     })
-})
+}