fix: construct absolute paths

Author: vsutedjo

advisories/V8-advisory.json

@@ -1,7 +1,7 @@
 {
   "schema_version": "1.6.7",
   "id": "V8",
-  "modified": "2025-01-24T11:43:39+01:00",
+  "modified": "2025-01-24T14:25:05+01:00",
   "published": "2024-11-22T16:36:05+01:00",
   "summary": "https://chromium.googlesource.com/chromium/src/+/refs/heads/main/docs/security/updates.md",
   "details": "Dependency on outdated V8 found. Please update to the latest beta, stable, or extended stable versions.",

src/V8-cache.json

@@ -15,8 +15,8 @@
     "d458198c60d6f63bfdf80e2ce0d3a6b7e496c710"
   ],
   "2025-01-24": [
-    "8afc4bb6114b959f0ac400041a73c9dd0ada1e39",
     "7b97c21ae1cde63a0ca1f1a2d3459ea758adaac0",
-    "685de311c1e4a25951ee1bb3c88fcca0726a4e95"
+    "685de311c1e4a25951ee1bb3c88fcca0726a4e95",
+    "155e22e0bb76706f997c4db28f899b91957818f3"
   ]
 }

src/main.go

@@ -61,20 +61,31 @@ type Advisory struct {
 	Affected      []AffectedItem `json:"affected"`
 }
 
+const (
+	policyBasePath   = "policies/V8-policy.json"
+	cacheBasePath    = "src/V8-cache.json"
+	advisoryBasePath = "advisories/V8-advisory.json"
+)
+
 var (
 	now          = time.Now()
 	nowTimestamp = now.Format(time.RFC3339)
 	today        = format(now)
-	policyPath   = "policies/V8-policy.json"
-	cachePath    = "src/V8-cache.json"
-	advisoryPath = "advisories/V8-advisory.json"
+	dir          string
+	policyPath   string
+	cachePath    string
+	advisoryPath string
 )
 
 type Repositories interface {
 	ListCommits(ctx context.Context, owner, repo string, opts *github.CommitsListOptions) ([]*github.RepositoryCommit, *github.Response, error)
 }
 
 func main() {
+	// Construct absolute path of the runner.
+	_, filename, _, _ := runtime.Caller(0)
+	dir = filepath.Dir(filename)
+
 	policy, err := loadPolicy()
 	if err != nil {
 		panic(err)
@@ -112,10 +123,8 @@ func main() {
 }
 
 func loadPolicy() (*Policy, error) {
-	_, filename, _, _ := runtime.Caller(0)
-	dir := filepath.Dir(filename)
-	advisoryFilePath := filepath.Join(dir, "../advisories/V8-advisory.json")
-	data, err := os.ReadFile(advisoryFilePath)
+	policyPath = filepath.Join(dir, "../", policyBasePath)
+	data, err := os.ReadFile(policyPath)
 	if err != nil {
 		return nil, err
 	}
@@ -131,6 +140,7 @@ func loadPolicy() (*Policy, error) {
 
 func loadCache() (map[string][]string, error) {
 	cacheData := make(map[string][]string)
+	cachePath = filepath.Join(dir, "../", cacheBasePath)
 	data, err := os.ReadFile(cachePath)
 	if err != nil {
 		if !os.IsNotExist(err) {
@@ -146,7 +156,6 @@ func loadCache() (map[string][]string, error) {
 }
 
 func saveCache(cacheData map[string][]string) error {
-
 	updatedData, err := json.MarshalIndent(cacheData, "", "  ")
 	if err != nil {
 		return fmt.Errorf("error marshalling cache data: %w", err)
@@ -159,6 +168,7 @@ func saveCache(cacheData map[string][]string) error {
 }
 
 func loadAdvisory() (*Advisory, error) {
+	advisoryPath = filepath.Join(dir, "../", advisoryBasePath)
 	advisoryData, err := os.ReadFile(advisoryPath)
 	var advisory Advisory
 	if err == nil {