fix incorrect use of fsnotify in configtls

.chloggen/fix-incorrect-use-of-fsnotify.yaml

@@ -0,0 +1,25 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: bug_fix
+
+# The name of the component, or a single word describing the area of concern, (e.g. otlpreceiver)
+component: configtls
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: fix incorrect use of fsnotify
+
+# One or more tracking issues or pull requests related to the change
+issues: [8438]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:
+
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: []

config/configtls/clientcasfilereloader.go

@@ -112,7 +112,7 @@ func (r *clientCAsFileReloader) handleWatcherEvents() {
 			// NOTE: k8s configmaps uses symlinks, we need this workaround.
 			// original configmap file is removed.
 			// SEE: https://martensson.io/go-fsnotify-and-kubernetes-configmaps/
-			if event.Op == fsnotify.Remove || event.Op == fsnotify.Chmod {
+			if event.Has(fsnotify.Remove) || event.Has(fsnotify.Chmod) {
 				// remove the watcher since the file is removed
 				if err := r.watcher.Remove(event.Name); err != nil {
 					r.lastReloadError = err
@@ -123,7 +123,7 @@ func (r *clientCAsFileReloader) handleWatcherEvents() {
 				}
 				r.reload()
 			}
-			if event.Op == fsnotify.Write {
+			if event.Has(fsnotify.Write) {
 				r.reload()
 			}
 		}