feat: add option to control cache invalidation interval (#1031)

README.md

@@ -195,6 +195,23 @@ with:
   # ...
 ```
 
+### `cache-invalidation-interval`
+
+(optional)
+
+Periodically invalidate the cache every `cache-invalidation-interval` days to ensure that outdated data is removed and fresh data is loaded.
+
+The default value is `7`.
+
+```yml
+uses: golangci/golangci-lint-action@v5
+with:
+  cache-invalidation-interval: 15
+  # ...
+```
+
+If set the number is `<= 0`, the cache will be always invalidate (Not recommended).
+
 ### `annotations`
 
 (optional)

action.yml

@@ -44,6 +44,10 @@ inputs:
     description: "golangci-lint command line arguments"
     default: ""
     required: false
+  cache-invalidation-interval:
+    description: "Periodically invalidate a cache because a new code being added. (number of days)"
+    default: '7'
+    required: false
 runs:
   using: "node20"
   main: "dist/run/index.js"

src/cache.ts

@@ -25,28 +25,40 @@ const getLintCacheDir = (): string => {
 
 const getIntervalKey = (invalidationIntervalDays: number): string => {
   const now = new Date()
+
+  if (invalidationIntervalDays <= 0) {
+    return `${now.getTime()}`
+  }
+
   const secondsSinceEpoch = now.getTime() / 1000
   const intervalNumber = Math.floor(secondsSinceEpoch / (invalidationIntervalDays * 86400))
   return intervalNumber.toString()
 }
 
 async function buildCacheKeys(): Promise<string[]> {
   const keys = []
+
+  const invalidationIntervalDays = parseInt(core.getInput(`cache-invalidation-interval`, { required: true }).trim())
+
   // Periodically invalidate a cache because a new code being added.
-  // TODO: configure it via inputs.
-  let cacheKey = `golangci-lint.cache-${getIntervalKey(7)}-`
+  let cacheKey = `golangci-lint.cache-${getIntervalKey(invalidationIntervalDays)}-`
   keys.push(cacheKey)
+
   // Get working directory from input
   const workingDirectory = core.getInput(`working-directory`)
+
   // create path to go.mod prepending the workingDirectory if it exists
   const goModPath = path.join(workingDirectory, `go.mod`)
+
   core.info(`Checking for go.mod: ${goModPath}`)
+
   if (await pathExists(goModPath)) {
     // Add checksum to key to invalidate a cache when dependencies change.
     cacheKey += await checksumFile(`sha1`, goModPath)
   } else {
     cacheKey += `nogomod`
   }
+
   keys.push(cacheKey)
 
   return keys