Remove direct access to v2.Context.StatusReporter in Filestream (#48075)

v2.Context.StatusReporter can be nil when Filebeat runs
standalone. The direct access to this field is replaced in Filestream
by the UpdateStatus method. A deprecation notice is added is added to
the StatusReporter field.

(cherry picked from commit 72314a0)

# Conflicts:
#	filebeat/input/filestream/internal/input-logfile/harvester.go

Author: belimawr

filebeat/input/filestream/internal/input-logfile/harvester.go

@@ -206,6 +206,17 @@ func startHarvester(
 				ctx.Logger.Errorf("Harvester crashed with: %+v", err)
 				hg.readers.remove(srcID)
 			}
+<<<<<<< HEAD
+=======
+
+			// Report any harvester error as a degraded state for the input
+			if err != nil {
+				ctx.UpdateStatus(
+					status.Degraded,
+					fmt.Sprintf("Harvester for Filestream input %q failed: %s", inputID, err),
+				)
+			}
+>>>>>>> 72314a046 (Remove direct access to v2.Context.StatusReporter in Filestream (#48075))
 		}()
 
 		if restart {

filebeat/input/v2/input.go

@@ -104,6 +104,8 @@ type Context struct {
 	// StatusReporter provides a method to update the status of the underlying unit
 	// that maps to the config. Note: Under standalone execution of Filebeat this is
 	// expected to be nil.
+	// Deprecated: Direct access to StatusReporter is deprecated because it
+	// can be nil, use the UpdateStatus method instead
 	StatusReporter status.StatusReporter
 
 	// MetricsRegistry is the registry collecting metrics for the input using