chore: v1.2.0

This reverts commit b413e7e15e.

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "kubectl-action",
-	"version": "1.1.2",
+	"version": "1.2.0",
 	"scripts": {
 		"dev": "ncc -smw --license licenses.txt build src/main.ts",
 		"build": "ncc -sm --license licenses.txt build src/main.ts",
@@ -8,14 +8,15 @@
 	},
 	"dependencies": {
 		"@actions/core": "^1.10.0",
-		"undici": "^5.16.0"
+		"@actions/tool-cache": "^2.0.1",
+		"undici": "^5.22.1"
 	},
 	"devDependencies": {
-		"@types/node": "^18.11.18",
-		"@vercel/ncc": "^0.36.0",
-		"eslint": "^8.32.0",
-		"eslint-config-tale": "^1.0.15",
-		"np": "^7.6.3",
-		"typescript": "^4.9.4"
+		"@types/node": "^20.3.2",
+		"@vercel/ncc": "^0.36.1",
+		"eslint": "^8.43.0",
+		"eslint-config-tale": "^1.0.16",
+		"np": "^8.0.4",
+		"typescript": "^5.1.6"
 	}
 }

src/main.ts

@@ -1,14 +1,20 @@
+import { env, platform } from 'node:process'
+
 import { debug, getState, setFailed } from '@actions/core'
 import { setupKubeconfig } from 'login'
 import { installKubectl } from 'setup'
 import { teardown } from 'teardown'
 
+if (env.RUNNER_OS === 'Windows' || platform === 'win32') {
+	setFailed('kubectl-action does not support Windows')
+}
+
 if (getState('kubectl-path')) {
 	debug('Running post kubectl-action setup')
 	teardown()
 		// eslint-disable-next-line unicorn/prefer-top-level-await
 		.catch(error => {
-			setFailed('Failed to install kubectl (this is a bug in kubectl-action): ')
+			setFailed('Failed to teardown kubectl (this is a bug in kubectl-action): ')
 			debug(JSON.stringify(error))
 		})
 } else {

src/setup.ts

@@ -1,10 +1,9 @@
-import { createHash, randomUUID } from 'node:crypto'
-import { mkdir, writeFile } from 'node:fs/promises'
-import { join } from 'node:path'
-import { env, stdout } from 'node:process'
-import { clearLine, cursorTo } from 'node:readline'
+import { chmod } from 'node:fs/promises'
+import { dirname, join } from 'node:path'
+import { env } from 'node:process'
 
-import { addPath, debug, getInput, saveState, setFailed, warning } from '@actions/core'
+import { addPath, debug, getInput, setFailed } from '@actions/core'
+import { cacheFile, downloadTool, find } from '@actions/tool-cache'
 import { fetch } from 'undici'
 
 export async function installKubectl() {
@@ -29,19 +28,16 @@ export async function installKubectl() {
 	}
 
 	console.log(`Installing kubectl version ${version}`)
-	const kubectl = await downloadKubectl(version)
 
-	if (!kubectl) {
-		return
+	try {
+		const path = await fetchKubectl(version)
+		await chmod(path, '775')
+		addPath(dirname(path))
+		debug(`kubectl ${version} installed and cached at ${path}`)
+	} catch {
+		debug('Failed to download kubectl from dl.k8s.io')
+		setFailed('Failed to download kubectl from dl.k8s.io\nPlease check the version you specified is valid')
 	}
-
-	const path = join(env.RUNNER_TEMP, randomUUID())
-	await mkdir(path, { recursive: true })
-	saveState('kubectl-path', path)
-
-	console.log(`Installing kubectl to ${path}`)
-	await writeFile(join(path, 'kubectl'), kubectl)
-	addPath(path)
 }
 
 // Fetches the latest kubectl version from the Kubernetes release server
@@ -57,62 +53,34 @@ async function fetchLatestVersion() {
 }
 
 // Downloads the kubectl binary from the Kubernetes release server
-// Also runs a checksum verification on the downloaded binary
-async function downloadKubectl(version: string) {
-	const url = `https://dl.k8s.io/release/${version}/bin/linux/amd64/kubectl`
-	const hashUrl = `${url}.sha256`
+// If already downloaded, returns the path to the cached binary
+async function fetchKubectl(version: string) {
+	const cachedPath = find('kubectl', version)
+
+	// Cached path is a directory containing the kubectl binary
+	if (cachedPath) {
+		debug(`kubectl ${version} already installed`)
+		return join(cachedPath, 'kubectl')
+	}
+
+	const url = `https://dl.k8s.io/release/${version}/bin/${retrieveRunnerMetadata()}/kubectl`
 
 	console.log(`Downloading kubectl (${url})`)
-	debug(`Downloading kubectl checksum (${hashUrl})`)
-
-	const hashResponse = await fetch(hashUrl)
-	if (!hashResponse.ok) {
-		debug(`Failed to download kubectl checksum with status ${hashResponse.status}`)
-		warning(`Skipping checksum verification for kubectl ${version}`)
-	}
-
-	const hash = hashResponse.ok ? await hashResponse.text() : ''
-
-	const response = await fetch(url)
-	if (!response.ok || !response.body) {
-		debug(`Failed to download kubectl with status ${response.status}`)
-		setFailed(`Failed to download kubectl with status ${response.status}`)
-		return
-	}
-
-	const hashStream = createHash('sha256')
-	const { body, headers } = response
-	const size = Number(headers.get('content-length'))
-	debug(`Downloaded kubectl (${size} bytes)`)
-
-	let downloaded = 0
-	let progressed = 0
-	const buffer = Buffer.alloc(size)
-
-	for await (const chunk of body as AsyncIterable<Buffer>) {
-		buffer.write(chunk.toString('binary'), downloaded, 'binary')
-		hashStream.update(chunk)
-		downloaded += chunk.length
-
-		if (Math.floor((downloaded / size) * 80) > progressed) {
-			clearLine(stdout, 0)
-			cursorTo(stdout, 0)
-
-			progressed++
-			stdout.write(`[${'='.repeat(progressed)}>${' '.repeat(80 - progressed)}]`)
-		}
-	}
-
-	clearLine(stdout, 0)
-	cursorTo(stdout, 0)
-	console.log(`[${'='.repeat(80)}]`)
-
-	const hashSum = hashStream.digest('hex')
-	if (hashResponse.ok && hashSum !== hash) {
-		debug(`Checksum verification failed for kubectl ${version}`)
-		setFailed(`Checksum verification failed for kubectl ${version}`)
-		return
-	}
-
-	return buffer
+	const downloadPath = await downloadTool(url)
+	const toolPath = await cacheFile(downloadPath, 'kubectl', 'kubectl', version)
+	return join(toolPath, 'kubectl')
+}
+
+// Gets the proper architecture and OS for the current platform
+// This doesn't use node functions, but instead CI variables provided by GitHub
+function retrieveRunnerMetadata() {
+	// Currently we don't support win32 platforms anyways
+	const runnerSystem = env.RUNNER_OS === 'Linux' ? 'linux' : 'darwin'
+	const runnerArch = env.RUNNER_ARCH?.toLowerCase()
+
+	if (runnerArch?.includes('arm')) {
+		return `${runnerSystem}/arm64`
+	}
+
+	return `${runnerSystem}/amd64`
 }

src/teardown.ts

@@ -4,10 +4,7 @@ import { debug, getState } from '@actions/core'
 
 export async function teardown() {
 	debug('Running kubectl-action teardown()')
-	console.log('Removing kubectl and kubeconfig')
-
-	const path = getState('kubectl-path')
-	await rm(path, { recursive: true, force: true })
+	console.log('Removing kubeconfig')
 
 	const configPath = getState('kubeconfig-path')
 	await rm(configPath, { recursive: true, force: true })