Use github cache (#53)

* Cache the zig compiler locally

* logging

* npm update

* verboser

* os.arch

* debug

* log signal

* address https://github.com/actions/toolkit/issues/687

* correct path

* add a cache: false option

* share size

* zigpath

* path.join skull

README.md

@@ -48,6 +48,18 @@ If you are running Zig on Windows machines, you need to make sure that your .zig
 *.zig text eol=lf
 ```
 
+This action caches the downloaded compilers in your repository's Actions cache by default,
+to reduce the load on the Zig Foundation's servers. Cached compilers are only about 60MB
+each per version/OS/architecture.
+
+If this is really bad for you for some reason you can disable the caching.
+
+```yaml
+- uses: goto-bus-stop/setup-zig@v2
+  with:
+    cache: false
+```
+
 ## License
 
 [Apache-2.0](LICENSE.md)

action.yml

@@ -9,6 +9,10 @@ inputs:
     description: 'Version of the zig compiler to use (must be 0.3.0 or up)'
     required: true
     default: 'master'
+  cache:
+    description: 'Cache downloaded compilers for faster action runs. Strongly recommended.'
+    required: false
+    default: 'true'
 runs:
   using: 'node16'
   main: 'dist/index.js'

index.js

@@ -4,7 +4,8 @@ const os = require('os')
 const path = require('path')
 const semver = require('semver')
 const actions = require('@actions/core')
-const cache = require('@actions/tool-cache')
+const cache = require('@actions/cache')
+const toolCache = require('@actions/tool-cache')
 const {
   extForPlatform,
   resolveCommit,
@@ -13,40 +14,60 @@ const {
 
 const TOOL_NAME = 'zig'
 
-async function downloadZig (platform, version) {
+async function downloadZig (platform, version, useCache = true) {
   const ext = extForPlatform(platform)
 
   const { downloadUrl, variantName, version: useVersion } = version.includes('+')
     ? resolveCommit(platform, version)
     : await resolveVersion(platform, version)
 
-  const cachedPath = cache.find(TOOL_NAME, useVersion)
+  const cachedPath = toolCache.find(TOOL_NAME, useVersion)
   if (cachedPath) {
     actions.info(`using cached zig install: ${cachedPath}`)
     return cachedPath
   }
 
+  const cacheKey = `${TOOL_NAME}-${variantName}`
+  if (useCache) {
+    const restorePath = path.join(process.env.RUNNER_TOOL_CACHE, TOOL_NAME, useVersion, os.arch())
+    actions.info(`attempting restore of ${cacheKey} to ${restorePath}`)
+    const restoredKey = await cache.restoreCache([restorePath], cacheKey)
+    if (restoredKey) {
+      actions.info(`using cached zig install: ${restorePath}`)
+      return restorePath
+    }
+  }
+
   actions.info(`no cached version found. downloading zig ${variantName}`)
-  const downloadPath = await cache.downloadTool(downloadUrl)
+  const downloadPath = await toolCache.downloadTool(downloadUrl)
   const zigPath = ext === 'zip'
-    ? await cache.extractZip(downloadPath)
-    : await cache.extractTar(downloadPath, undefined, 'x')
+    ? await toolCache.extractZip(downloadPath)
+    : await toolCache.extractTar(downloadPath, undefined, 'x')
 
   const binPath = path.join(zigPath, variantName)
-  const cachePath = await cache.cacheDir(binPath, TOOL_NAME, useVersion)
-  actions.info(`added zig ${useVersion} to the tool cache`)
+  const cachePath = await toolCache.cacheDir(binPath, TOOL_NAME, useVersion)
+
+  if (useCache) {
+    actions.info(`adding zig ${useVersion} at ${cachePath} to local cache ${cacheKey}`)
+    await cache.saveCache([cachePath], cacheKey)
+  }
 
   return cachePath
 }
 
 async function main () {
   const version = actions.getInput('version') || 'master'
+  const useCache = actions.getInput('cache') || 'true'
   if (semver.valid(version) && semver.lt(version, '0.3.0')) {
     actions.setFailed('This action does not work with Zig 0.1.0 and Zig 0.2.0')
     return
   }
+  if (useCache !== 'false' && useCache !== 'true') {
+    actions.setFailed('`with.cache` must be "true" or "false"')
+    return
+  }
 
-  const zigPath = await downloadZig(os.platform(), version)
+  const zigPath = await downloadZig(os.platform(), version, Boolean(useCache))
 
   // Add the `zig` binary to the $PATH
   actions.addPath(zigPath)

package.json

@@ -7,13 +7,14 @@
     "url": "https://github.com/goto-bus-stop/setup-zig/issues"
   },
   "dependencies": {
+    "@actions/cache": "^3.2.1",
     "@actions/core": "^1.2.2",
     "@actions/tool-cache": "^2.0.1",
     "semver": "^7.1.3",
     "simple-get": "^4.0.0"
   },
   "devDependencies": {
-    "esbuild": "^0.17.19",
+    "esbuild": "^0.18.8",
     "standard": "^17.0.0"
   },
   "homepage": "https://github.com/goto-bus-stop/setup-zig",
@@ -30,7 +31,7 @@
     "url": "https://github.com/goto-bus-stop/setup-zig.git"
   },
   "scripts": {
-    "prepare": "esbuild index.js --outdir=dist --bundle --platform=node",
+    "prepare": "esbuild index.js --outdir=dist --keep-names --bundle --platform=node --target=node16",
     "test": "standard && node test"
   },
   "standard": {