Support latest tag for golangci-lint version (#64)

* build(deps): bump @actions/github from 2.1.1 to 4.0.0

Bumps [@actions/github](https://github.com/actions/toolkit/tree/HEAD/packages/github) from 2.1.1 to 4.0.0.
- [Release notes](https://github.com/actions/toolkit/releases)
- [Changelog](https://github.com/actions/toolkit/blob/master/packages/github/RELEASES.md)
- [Commits](https://github.com/actions/toolkit/commits/HEAD/packages/github)

Signed-off-by: dependabot[bot] <support@github.com>

* Fix usage of github action

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Sergey Vilgelm <sergey.vilgelm@ibm.com>

.github/dependabot.yml

@@ -0,0 +1,14 @@
+version: 2
+updates:
+  - package-ecosystem: github-actions
+    directory: "/"
+    schedule:
+      interval: weekly
+    reviewers:
+      - "golangci/team"
+  - package-ecosystem: npm
+    directory: "/"
+    schedule:
+      interval: weekly
+    reviewers:
+      - "golangci/team"

.github/workflows/test.yml

@@ -4,23 +4,22 @@ on: # rebuild any PRs and main branch changes
   push:
     branches:
       - master
-      - 'releases/*'
+      - "releases/*"
 
 jobs:
   build: # make sure build/ci work properly
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
-    - run: |
-        npm install
-        npm run prepare-deps
-        npm run all
-        git diff --exit-code
+      - uses: actions/checkout@v2
+      - run: |
+          npm install
+          npm run all
   test: # make sure the action works on a clean machine without building
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
-    - uses: ./
-      with:
-        version: v1.26
-        args: --issues-exit-code=0 ./sample/...
+      - uses: actions/checkout@v2
+      - uses: ./
+        with:
+          version: latest
+          args: --issues-exit-code=0 ./sample/...
+          only-new-issues: true

README.md

@@ -7,6 +7,12 @@ The action runs [golangci-lint](https://github.com/golangci/golangci-lint) and r
 
 ![GitHub Annotations](./static/annotations.png)
 
+## Compatibility
+
+* `v2.0.0+` works with `golangci-lint` version >= `v1.28.3`
+* `v1.2.2` is deprecated due to we forgot to change the minimum version of `golangci-lint` to `v1.28.3` ([issue](https://github.com/golangci/golangci-lint-action/issues/39))
+* `v1.2.1` works with `golangci-lint` version >= `v1.14.0` ([issue](https://github.com/golangci/golangci-lint-action/issues/39))
+
 ## How to use
 
 Add `.github/workflows/golangci-lint.yml` with the following contents:
@@ -27,15 +33,24 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: golangci-lint
-        uses: golangci/golangci-lint-action@v0.2.0
+        uses: golangci/golangci-lint-action@v1
         with:
           # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.
-          version: v1.26
+          version: v1.29
+
+          # Optional: working directory, useful for monorepos
+          # working-directory: somedir
 
           # Optional: golangci-lint command line arguments.
-          # args: ./the-only-dir-to-analyze/...
+          # args: --issues-exit-code=0
+
+          # Optional: show only new issues if it's a pull request. The default value is `false`.
+          # only-new-issues: true
 ```
 
+We recommend running this action in a job separate from other jobs (`go test`, etc)
+because different jobs [run in parallel](https://help.github.com/en/actions/getting-started-with-github-actions/core-concepts-for-github-actions#job).
+
 ## Comments and Annotations
 
 Currently, GitHub parses the action's output and creates [annotations](https://github.community/t5/GitHub-Actions/What-are-annotations/td-p/30770).
@@ -49,7 +64,7 @@ The restrictions of annotations are the following:
 
 The action was implemented with performance in mind:
 
-1. We cache data by [@actions/cache](https://github.com/actions/cache) between builds: Go build cache, Go modules cache, golangci-lint analysis cache.
+1. We cache data by [@actions/cache](https://github.com/actions/toolkit/tree/master/packages/cache) between builds: Go build cache, Go modules cache, golangci-lint analysis cache.
 2. We don't use Docker because image pulling is slow.
 3. We do as much as we can in parallel, e.g. we download cache, go and golangci-lint binary in parallel.
 
@@ -65,7 +80,7 @@ For example, in a repository of [golangci-lint](https://github.com/golangci/gola
 We use JavaScript-based action. We don't use Docker-based action because:
 
 1. docker pulling is slow currently
-2. it's easier to use caching from [@actions/cache](https://github.com/actions/cache) until GitHub team hasn't supported reusing actions from actions
+2. it's easier to use caching from [@actions/cache](https://github.com/actions/toolkit/tree/master/packages/cache)
 
 Inside our action we perform 3 steps:
 

action.yml

@@ -1,23 +1,31 @@
 ---
-name: 'Run golangci-lint'
-description: 'Official golangci-lint action with line-attached annotations for found issues, caching and parallel execution. Beta version.'
-author: 'golangci'
+name: "Run golangci-lint"
+description: "Official golangci-lint action with line-attached annotations for found issues, caching and parallel execution."
+author: "golangci"
 inputs:
   version:
-    description: 'version of golangci-lint to use in form of v1.2.3'
-    required: true
+    description: "version of golangci-lint to use in form of v1.2 or `latest` to use the latest version"
+    required: false
   args:
-    description: 'golangci-lint command line arguments'
-    default: ''
+    description: "golangci-lint command line arguments"
+    default: ""
+    required: false
+  working-directory:
+    description: "golangci-lint working directory, default is project root"
     required: false
   github-token:
-    description: 'GitHub token with scope `repo.public_repo`. Used for fetching a list of releases of golangci-lint.'
+    description: "the token is used for fetching patch of a pull request to show only new issues"
+    default: ${{ github.token }}
+    required: true
+  only-new-issues:
+    description: "if set to true and the action runs on a pull request - the action outputs only newly found issues"
+    default: false
     required: true
 
 runs:
-  using: 'node12'
-  main: 'dist/run/index.js'
-  post: 'dist/post_run/index.js'
+  using: "node12"
+  main: "dist/run/index.js"
+  post: "dist/post_run/index.js"
 branding:
-  icon: 'shield'
-  color: 'yellow'
+  icon: "shield"
+  color: "yellow"

package.json

@@ -1,49 +1,52 @@
 {
   "name": "golanci-lint-action",
-  "version": "1.1.2",
+  "version": "2.0.0",
   "private": true,
   "description": "golangci-lint github action",
   "main": "dist/main.js",
   "scripts": {
     "prepare-setup-go": "cd node_modules/setup-go && npm run build",
-    "prepare-cache": "cd node_modules/cache && npm run build",
-    "prepare-deps": "npm run prepare-setup-go && npm run prepare-cache",
+    "prepare-deps": "npm run prepare-setup-go",
     "build": "tsc && ncc build -o dist/run/ src/main.ts && ncc build -o dist/post_run/ src/post_main.ts",
+    "watched_build_main": "tsc && ncc build -w -o dist/run/ src/main.ts",
+    "watched_build_post_main": "tsc && ncc build -w -o dist/post_run/ src/post_main.ts",
     "type-check": "tsc",
     "lint": "eslint --max-warnings 1 **/*.ts --cache",
     "lint-fix": "eslint **/*.ts --cache --fix",
     "format": "prettier --write **/*.ts",
     "format-check": "prettier --check **/*.ts",
-    "all": "npm run build && npm run format-check && npm run lint",
+    "all": "npm run prepare-deps && npm run build && npm run format-check && npm run lint",
     "local": "npm run build && act -j test -b"
   },
   "repository": {
     "type": "git",
     "url": "git+https://github.com/golangci/golangci-lint-action.git"
   },
-  "author": "GitHub",
+  "author": "golangci",
   "license": "MIT",
   "dependencies": {
+    "@actions/cache": "^1.0.1",
     "@actions/core": "^1.2.0",
     "@actions/exec": "^1.0.1",
-    "@actions/github": "^2.1.1",
-    "@actions/tool-cache": "^1.3.4",
-    "@types/semver": "^7.1.0",
-    "cache": "git+https://github.com/golangci/cache.git",
-    "setup-go": "git+https://github.com/actions/setup-go.git"
+    "@actions/github": "^4.0.0",
+    "@actions/tool-cache": "^1.6.0",
+    "@types/semver": "^7.3.1",
+    "@types/tmp": "^0.2.0",
+    "setup-go": "git+https://github.com/actions/setup-go.git#v2.1.1",
+    "tmp": "^0.2.1"
   },
   "devDependencies": {
-    "@types/node": "^12.0.4",
-    "@types/uuid": "^3.4.5",
-    "@typescript-eslint/eslint-plugin": "^2.7.0",
-    "@typescript-eslint/parser": "^2.7.0",
-    "@zeit/ncc": "^0.20.5",
+    "@types/node": "^14.0.27",
+    "@types/uuid": "^8.0.0",
+    "@typescript-eslint/eslint-plugin": "^2.34.0",
+    "@typescript-eslint/parser": "^2.34.0",
+    "@zeit/ncc": "^0.22.3",
     "eslint": "^6.6.0",
     "eslint-config-prettier": "^6.5.0",
-    "eslint-plugin-import": "^2.18.2",
-    "eslint-plugin-prettier": "^3.1.1",
+    "eslint-plugin-import": "^2.22.0",
+    "eslint-plugin-prettier": "^3.1.4",
     "eslint-plugin-simple-import-sort": "^5.0.2",
-    "prettier": "^1.19.1",
-    "typescript": "^3.8.3"
+    "prettier": "^2.0.5",
+    "typescript": "^3.9.7"
   }
 }

sample/sample.go

@@ -10,6 +10,7 @@ import (
 // Hash~
 func Hash(data string) string {
 	retError()
+	retError2()
 
 	h := md5.New()
 	h.Write([]byte(data))
@@ -19,3 +20,7 @@ func Hash(data string) string {
 func retError() error {
 	return errors.New("err")
 }
+
+func retError2() error {
+	return errors.New("err2")
+}

src/cache.ts

@@ -1,15 +1,17 @@
+import * as cache from "@actions/cache"
 import * as core from "@actions/core"
-import restore from "cache/lib/restore"
-import save from "cache/lib/save"
 import * as crypto from "crypto"
 import * as fs from "fs"
 
+import { Events, State } from "./constants"
+import * as utils from "./utils/actionUtils"
+
 function checksumFile(hashName: string, path: string): Promise<string> {
   return new Promise((resolve, reject) => {
     const hash = crypto.createHash(hashName)
     const stream = fs.createReadStream(path)
-    stream.on("error", err => reject(err))
-    stream.on("data", chunk => hash.update(chunk))
+    stream.on("error", (err) => reject(err))
+    stream.on("data", (chunk) => hash.update(chunk))
     stream.on("end", () => resolve(hash.digest("hex")))
   })
 }
@@ -52,30 +54,80 @@ async function buildCacheKeys(): Promise<string[]> {
 }
 
 export async function restoreCache(): Promise<void> {
+  if (!utils.isValidEvent()) {
+    utils.logWarning(
+      `Event Validation Error: The event type ${process.env[Events.Key]} is not supported because it's not tied to a branch or tag ref.`
+    )
+    return
+  }
+
   const startedAt = Date.now()
 
   const keys = await buildCacheKeys()
   const primaryKey = keys.pop()
   const restoreKeys = keys.reverse()
-  core.info(`Primary analysis cache key is '${primaryKey}', restore keys are '${restoreKeys.join(` | `)}'`)
-  process.env[`INPUT_RESTORE-KEYS`] = restoreKeys.join(`\n`)
-  process.env.INPUT_KEY = primaryKey
-
-  process.env.INPUT_PATH = getCacheDirs().join(`\n`)
 
   // Tell golangci-lint to use our cache directory.
   process.env.GOLANGCI_LINT_CACHE = getLintCacheDir()
 
-  await restore()
-  core.info(`Restored cache for golangci-lint from key '${primaryKey}' in ${Date.now() - startedAt}ms`)
+  if (!primaryKey) {
+    utils.logWarning(`Invalid primary key`)
+    return
+  }
+  core.saveState(State.CachePrimaryKey, primaryKey)
+  try {
+    const cacheKey = await cache.restoreCache(getCacheDirs(), primaryKey, restoreKeys)
+    if (!cacheKey) {
+      core.info(`Cache not found for input keys: ${[primaryKey, ...restoreKeys].join(", ")}`)
+      return
+    }
+    // Store the matched cache key
+    utils.setCacheState(cacheKey)
+    core.info(`Restored cache for golangci-lint from key '${primaryKey}' in ${Date.now() - startedAt}ms`)
+  } catch (error) {
+    if (error.name === cache.ValidationError.name) {
+      throw error
+    } else {
+      core.warning(error.message)
+    }
+  }
 }
 
 export async function saveCache(): Promise<void> {
+  // Validate inputs, this can cause task failure
+  if (!utils.isValidEvent()) {
+    utils.logWarning(
+      `Event Validation Error: The event type ${process.env[Events.Key]} is not supported because it's not tied to a branch or tag ref.`
+    )
+    return
+  }
+
   const startedAt = Date.now()
 
   const cacheDirs = getCacheDirs()
-  process.env.INPUT_PATH = cacheDirs.join(`\n`)
+  const primaryKey = core.getState(State.CachePrimaryKey)
+  if (!primaryKey) {
+    utils.logWarning(`Error retrieving key from state.`)
+    return
+  }
 
-  await save()
-  core.info(`Saved cache for golangci-lint from paths '${cacheDirs.join(`, `)}' in ${Date.now() - startedAt}ms`)
+  const state = utils.getCacheState()
+
+  if (utils.isExactKeyMatch(primaryKey, state)) {
+    core.info(`Cache hit occurred on the primary key ${primaryKey}, not saving cache.`)
+    return
+  }
+
+  try {
+    await cache.saveCache(cacheDirs, primaryKey)
+    core.info(`Saved cache for golangci-lint from paths '${cacheDirs.join(`, `)}' in ${Date.now() - startedAt}ms`)
+  } catch (error) {
+    if (error.name === cache.ValidationError.name) {
+      throw error
+    } else if (error.name === cache.ReserveCacheError.name) {
+      core.info(error.message)
+    } else {
+      core.info(`[warning] ${error.message}`)
+    }
+  }
 }

src/constants.ts

@@ -0,0 +1,18 @@
+export enum Inputs {
+  Key = "key",
+  Path = "path",
+  RestoreKeys = "restore-keys",
+}
+
+export enum State {
+  CachePrimaryKey = "CACHE_KEY",
+  CacheMatchedKey = "CACHE_RESULT",
+}
+
+export enum Events {
+  Key = "GITHUB_EVENT_NAME",
+  Push = "push",
+  PullRequest = "pull_request",
+}
+
+export const RefKey = "GITHUB_REF"

src/run.ts

@@ -1,5 +1,9 @@
 import * as core from "@actions/core"
-import { exec } from "child_process"
+import * as github from "@actions/github"
+import { exec, ExecOptions } from "child_process"
+import * as fs from "fs"
+import * as path from "path"
+import { dir } from "tmp"
 import { promisify } from "util"
 
 import { restoreCache, saveCache } from "./cache"
@@ -7,26 +11,91 @@ import { installGo, installLint } from "./install"
 import { findLintVersion } from "./version"
 
 const execShellCommand = promisify(exec)
+const writeFile = promisify(fs.writeFile)
+const createTempDir = promisify(dir)
 
 async function prepareLint(): Promise<string> {
   const versionConfig = await findLintVersion()
   return await installLint(versionConfig)
 }
 
-async function prepareEnv(): Promise<string> {
+async function fetchPatch(): Promise<string> {
+  const onlyNewIssues = core.getInput(`only-new-issues`, { required: true }).trim()
+  if (onlyNewIssues !== `false` && onlyNewIssues !== `true`) {
+    throw new Error(`invalid value of "only-new-issues": "${onlyNewIssues}", expected "true" or "false"`)
+  }
+  if (onlyNewIssues === `false`) {
+    return ``
+  }
+
+  const ctx = github.context
+  if (ctx.eventName !== `pull_request`) {
+    core.info(`Not fetching patch for showing only new issues because it's not a pull request context: event name is ${ctx.eventName}`)
+    return ``
+  }
+  const pull = ctx.payload.pull_request
+  if (!pull) {
+    core.warning(`No pull request in context`)
+    return ``
+  }
+
+  const octokit = github.getOctokit(core.getInput(`github-token`, { required: true }))
+  let patch: string
+  try {
+    const patchResp = await octokit.pulls.get({
+      owner: ctx.repo.owner,
+      repo: ctx.repo.repo,
+      [`pull_number`]: pull.number,
+      mediaType: {
+        format: `diff`,
+      },
+    })
+
+    if (patchResp.status !== 200) {
+      core.warning(`failed to fetch pull request patch: response status is ${patchResp.status}`)
+      return `` // don't fail the action, but analyze without patch
+    }
+
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    patch = patchResp.data as any
+  } catch (err) {
+    console.warn(`failed to fetch pull request patch:`, err)
+    return `` // don't fail the action, but analyze without patch
+  }
+
+  try {
+    const tempDir = await createTempDir()
+    const patchPath = path.join(tempDir, "pull.patch")
+    core.info(`Writing patch to ${patchPath}`)
+    await writeFile(patchPath, patch)
+    return patchPath
+  } catch (err) {
+    console.warn(`failed to save pull request patch:`, err)
+    return `` // don't fail the action, but analyze without patch
+  }
+}
+
+type Env = {
+  lintPath: string
+  patchPath: string
+}
+
+async function prepareEnv(): Promise<Env> {
   const startedAt = Date.now()
 
   // Prepare cache, lint and go in parallel.
   const restoreCachePromise = restoreCache()
   const prepareLintPromise = prepareLint()
   const installGoPromise = installGo()
+  const patchPromise = fetchPatch()
 
   const lintPath = await prepareLintPromise
   await installGoPromise
   await restoreCachePromise
+  const patchPath = await patchPromise
 
   core.info(`Prepared env in ${Date.now() - startedAt}ms`)
-  return lintPath
+  return { lintPath, patchPath }
 }
 
 type ExecRes = {
@@ -43,23 +112,62 @@ const printOutput = (res: ExecRes): void => {
   }
 }
 
-async function runLint(lintPath: string): Promise<void> {
+async function runLint(lintPath: string, patchPath: string): Promise<void> {
   const debug = core.getInput(`debug`)
   if (debug.split(`,`).includes(`cache`)) {
     const res = await execShellCommand(`${lintPath} cache status`)
     printOutput(res)
   }
 
-  const args = core.getInput(`args`)
-  if (args.includes(`-out-format`)) {
+  const userArgs = core.getInput(`args`)
+  const addedArgs: string[] = []
+
+  const userArgNames = new Set<string>()
+  userArgs
+    .split(/\s/)
+    .map((arg) => arg.split(`=`)[0])
+    .filter((arg) => arg.startsWith(`-`))
+    .forEach((arg) => {
+      userArgNames.add(arg.replace(`-`, ``))
+    })
+
+  if (userArgNames.has(`out-format`)) {
     throw new Error(`please, don't change out-format for golangci-lint: it can be broken in a future`)
   }
+  addedArgs.push(`--out-format=github-actions`)
 
-  const cmd = `${lintPath} run --out-format=github-actions ${args}`.trimRight()
-  core.info(`Running [${cmd}] ...`)
+  if (patchPath) {
+    if (userArgNames.has(`new`) || userArgNames.has(`new-from-rev`) || userArgNames.has(`new-from-patch`)) {
+      throw new Error(`please, don't specify manually --new* args when requesting only new issues`)
+    }
+    addedArgs.push(`--new-from-patch=${patchPath}`)
+
+    // Override config values.
+    addedArgs.push(`--new=false`)
+    addedArgs.push(`--new-from-rev=`)
+  }
+
+  const workingDirectory = core.getInput(`working-directory`)
+  const cmdArgs: ExecOptions = {}
+  if (workingDirectory) {
+    if (patchPath) {
+      // TODO: make them compatible
+      throw new Error(`options working-directory and only-new-issues aren't compatible`)
+    }
+    if (!fs.existsSync(workingDirectory) || !fs.lstatSync(workingDirectory).isDirectory()) {
+      throw new Error(`working-directory (${workingDirectory}) was not a path`)
+    }
+    if (!userArgNames.has(`path-prefix`)) {
+      addedArgs.push(`--path-prefix=${workingDirectory}`)
+    }
+    cmdArgs.cwd = path.resolve(workingDirectory)
+  }
+
+  const cmd = `${lintPath} run ${addedArgs.join(` `)} ${userArgs}`.trimRight()
+  core.info(`Running [${cmd}] in [${cmdArgs.cwd || ``}] ...`)
   const startedAt = Date.now()
   try {
-    const res = await execShellCommand(cmd)
+    const res = await execShellCommand(cmd, cmdArgs)
     printOutput(res)
     core.info(`golangci-lint found no issues`)
   } catch (exc) {
@@ -79,8 +187,8 @@ async function runLint(lintPath: string): Promise<void> {
 
 export async function run(): Promise<void> {
   try {
-    const lintPath = await core.group(`prepare environment`, prepareEnv)
-    await core.group(`run golangci-lint`, () => runLint(lintPath))
+    const { lintPath, patchPath } = await core.group(`prepare environment`, prepareEnv)
+    await core.group(`run golangci-lint`, () => runLint(lintPath, patchPath))
   } catch (error) {
     core.error(`Failed to run: ${error}, ${error.stack}`)
     core.setFailed(error.message)

src/utils/actionUtils.ts

@@ -0,0 +1,37 @@
+import * as core from "@actions/core"
+
+import { RefKey, State } from "../constants"
+
+export function isExactKeyMatch(key: string, cacheKey?: string): boolean {
+  return !!(
+    cacheKey &&
+    cacheKey.localeCompare(key, undefined, {
+      sensitivity: "accent",
+    }) === 0
+  )
+}
+
+export function setCacheState(state: string): void {
+  core.saveState(State.CacheMatchedKey, state)
+}
+
+export function getCacheState(): string | undefined {
+  const cacheKey = core.getState(State.CacheMatchedKey)
+  if (cacheKey) {
+    core.debug(`Cache state/key: ${cacheKey}`)
+    return cacheKey
+  }
+
+  return undefined
+}
+
+export function logWarning(message: string): void {
+  const warningPrefix = "[warning]"
+  core.info(`${warningPrefix}${message}`)
+}
+
+// Cache token authorized for all events that are tied to a ref
+// See GitHub Context https://help.github.com/actions/automating-your-workflow-with-github-actions/contexts-and-expression-syntax-for-github-actions#github-context
+export function isValidEvent(): boolean {
+  return RefKey in process.env && Boolean(process.env[RefKey])
+}

src/version.ts

@@ -6,11 +6,14 @@ export type Version = {
   major: number
   minor: number
   patch: number | null
-}
+} | null
 
 const versionRe = /^v(\d+)\.(\d+)(?:\.(\d+))?$/
 
 const parseVersion = (s: string): Version => {
+  if (s == "latest" || s == "") {
+    return null
+  }
   const match = s.match(versionRe)
   if (!match) {
     throw new Error(`invalid version string '${s}', expected format v1.2 or v1.2.3`)
@@ -23,33 +26,41 @@ const parseVersion = (s: string): Version => {
   }
 }
 
-export const stringifyVersion = (v: Version): string => `v${v.major}.${v.minor}${v.patch !== null ? `.${v.patch}` : ``}`
+export const stringifyVersion = (v: Version): string => {
+  if (v == null) {
+    return "latest"
+  }
+  return `v${v.major}.${v.minor}${v.patch !== null ? `.${v.patch}` : ``}`
+}
 
 const minVersion = {
   major: 1,
-  minor: 14,
-  patch: 0,
+  minor: 28,
+  patch: 3,
 }
 
 const isLessVersion = (a: Version, b: Version): boolean => {
+  if (a == null) {
+    return true
+  }
+  if (b == null) {
+    return false
+  }
   if (a.major != b.major) {
     return a.major < b.major
   }
 
-  if (a.minor != b.minor) {
-    return a.minor < b.minor
-  }
-
-  if (a.patch === null || b.patch === null) {
-    return true
-  }
-
-  return a.patch < b.patch
+  // Do not compare patch parts because if the min version has a non zero value
+  // then it returns false, since the patch version of requested is always zero
+  return a.minor < b.minor
 }
 
 const getRequestedLintVersion = (): Version => {
-  const requestedLintVersion = core.getInput(`version`, { required: true })
+  const requestedLintVersion = core.getInput(`version`)
   const parsedRequestedLintVersion = parseVersion(requestedLintVersion)
+  if (parsedRequestedLintVersion == null) {
+    return null
+  }
   if (parsedRequestedLintVersion.patch !== null) {
     throw new Error(
       `requested golangci-lint version '${requestedLintVersion}' was specified with the patch version, need specify only minor version`
@@ -99,15 +110,14 @@ const getConfig = async (): Promise<Config> => {
 export async function findLintVersion(): Promise<VersionConfig> {
   core.info(`Finding needed golangci-lint version...`)
   const startedAt = Date.now()
-  const reqLintVersion = getRequestedLintVersion()
 
   const config = await getConfig()
-
   if (!config.MinorVersionToConfig) {
     core.warning(JSON.stringify(config))
     throw new Error(`invalid config: no MinorVersionToConfig field`)
   }
 
+  const reqLintVersion = getRequestedLintVersion()
   const versionConfig = config.MinorVersionToConfig[stringifyVersion(reqLintVersion)]
   if (!versionConfig) {
     throw new Error(`requested golangci-lint version '${stringifyVersion(reqLintVersion)}' doesn't exist`)
@@ -118,8 +128,9 @@ export async function findLintVersion(): Promise<VersionConfig> {
   }
 
   core.info(
-    `Requested golangci-lint '${stringifyVersion(reqLintVersion)}', using '${versionConfig.TargetVersion}', calculation took ${Date.now() -
-      startedAt}ms`
+    `Requested golangci-lint '${stringifyVersion(reqLintVersion)}', using '${versionConfig.TargetVersion}', calculation took ${
+      Date.now() - startedAt
+    }ms`
   )
   return versionConfig
 }