build: add script to download Saturn L2 node

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

.github/workflows/ci.yml

@@ -45,6 +45,8 @@ jobs:
 
       - name: Build
         run: npm run build
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Test
         run: npm run test
@@ -97,6 +99,8 @@ jobs:
 
       - name: Build
         run: npm run build
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Get tag
         id: tag

.gitignore

@@ -31,3 +31,5 @@ dev-app-update.yml
 *.njsproj
 *.sln
 *.sw?
+
+build/saturn

build/download-saturn-l2.js

@@ -0,0 +1,110 @@
+#!/usr/bin/env -S node
+
+'use strict'
+
+const SATURN_DIST_TAG = 'v0.0.2'
+
+const { mkdir } = require('node:fs/promises')
+const path = require('node:path')
+const tar = require('tar-fs')
+const gunzip = require('gunzip-maybe')
+const { request } = require('undici')
+const { pipeline } = require('node:stream/promises')
+
+const githubToken = process.env.GITHUB_TOKEN
+const authorization = githubToken ? `Bearer ${githubToken}` : undefined
+
+main().catch(err => {
+  console.error('Unhandled error:', err)
+  process.exit(1)
+})
+
+async function main () {
+  console.log('Fetching release metadata for %s', SATURN_DIST_TAG)
+  const { assets } = await fetchReleaseMetadata()
+
+  const outDir = path.resolve(__dirname, 'saturn')
+  await mkdir(outDir, { recursive: true })
+
+  await Promise.all(
+    assets
+      .map(async ({ name, browser_download_url: url }) => {
+        const match = name.match(/^saturn-l2_\d+\.\d+\.\d+_([A-Za-z0-9]+)_([A-Za-z0-9_]+)\.tar\.gz$/)
+        const platform = match && getPlatform(match[1])
+        if (!match || platform !== process.platform) {
+          console.log(' ⨯ skipping %s', name)
+          return
+        }
+
+        const outName = `l2node-${platform}-${getArch(match[2])}`
+        console.log(' ⇣ downloading %s', outName)
+        const res = await request(url, {
+          headers: { authorization },
+          maxRedirections: 5
+        })
+
+        if (res.statusCode >= 300) {
+          throw new Error(
+            `Cannot fetch saturn-l2 binary ${name}: ${res.statusCode}\n${await res.body.text()}`
+          )
+        }
+
+        const outFile = path.join(outDir, outName)
+        await pipeline(res.body, gunzip(), tar.extract(outFile))
+        console.log(' ✓ %s', outFile)
+      })
+  )
+
+  console.log('✨ DONE ✨')
+}
+
+/**
+ * @returns {Promise<{
+ *  assets: {name:string, browser_download_url: string}[];
+ * }>}
+ */
+async function fetchReleaseMetadata () {
+  const res = await request(
+    `https://api.github.com/repos/filecoin-project/saturn-l2/releases/tags/${SATURN_DIST_TAG}`,
+    {
+      headers: {
+        accept: 'application/vnd.github.v3+json',
+        'user-agent': 'undici',
+        authorization
+      }
+    }
+  )
+  if (res.statusCode >= 300) {
+    throw new Error(`Cannot fetch saturn-l2 release ${SATURN_DIST_TAG}: ${res.statusCode}\n${await res.body.text()}`)
+  }
+  const data = await res.body.json()
+  return data
+}
+
+/**
+ * @param {string} golangOs
+ */
+function getPlatform (golangOs) {
+  switch (golangOs) {
+    case 'Windows': return 'win32'
+    case 'Linux': return 'linux'
+    case 'Darwin': return 'darwin'
+  }
+  throw new Error(`Unkown OS string: ${golangOs}`)
+}
+
+/**
+ * @param {string} golangArch
+ */
+function getArch (golangArch) {
+  switch (golangArch) {
+    case 'x86_64':
+      return 'x64'
+    case 'i386':
+      return 'ia32'
+    case 'arm64':
+      return 'arm64'
+  }
+
+  throw new Error(`Unkown ARCH string: ${golangArch}`)
+}

electron-builder.yml

@@ -9,6 +9,11 @@ files:
     - node_modules/**/*
     - package.json
 
+extraResources:
+  - from: 'build/saturn/l2node-${platform}-${arch}'
+    to: 'saturn-l2-node'
+    filter: ['*']
+
 asarUnpack: 'main/**/scripts/**/*'
 
 afterSign: 'build/notarize-macos.js'

main/index.js

@@ -6,6 +6,7 @@ const path = require('node:path')
 const setupUI = require('./ui')
 const setupTray = require('./tray')
 const setupUpdater = require('./updater')
+const setupSaturnNode = require('./saturn-node')
 
 const inTest = (process.env.NODE_ENV === 'test')
 
@@ -49,6 +50,8 @@ async function run () {
     await setupTray(ctx)
     await setupUI(ctx)
     await setupUpdater(ctx)
+
+    await setupSaturnNode(ctx)
   } catch (e) {
     handleError(e)
   }

main/saturn-node.js

@@ -0,0 +1,24 @@
+'use strict'
+
+const { app } = require('electron')
+const path = require('path')
+const fs = require('node:fs/promises')
+
+module.exports = async function setupSaturnNode (/** @type {import('./typings').Context} */ ctx) {
+  const saturnBinaryPath = getSaturnBinaryPath()
+  console.log('Using Saturn L2 Node binary: %s', saturnBinaryPath)
+
+  const stat = await fs.stat(saturnBinaryPath)
+  if (!stat) {
+    throw new Error(`Invalid configuration or deployment. Saturn L2 Node was not found: ${saturnBinaryPath}`)
+  }
+
+  console.log('todo: start saturn node')
+}
+
+function getSaturnBinaryPath () {
+  const name = 'saturn-l2' + (process.platform === 'win32' ? '.exe' : '')
+  return app.isPackaged
+    ? path.resolve(process.resourcesPath, 'saturn-l2-node', name)
+    : path.resolve(__dirname, '..', 'build', 'saturn', `l2node-${process.platform}-${process.arch}`, name)
+}