Msg/update chrony receiver (#13863)

* Fixed issue with trying to read from socket

* Adding changelog

* Updated readme

* Fixing typo

receiver/chronyreceiver/README.md

@@ -34,6 +34,8 @@ The following options can be customised:
   - The allowed formats are the following
     - udp://hostname:port
     - unix:///path/to/chrony.sock (Please note the triple slash)
+    - unixgram:///path/to/chrony/sock
+  - The network type `unix` will be converted to `unixgram` but both are permissible
 - timeout (optional) - The total amount of time allowed to read and process the data from chronyd
   - Recommendation: This value should be set above 1s to allow `chronyd` time to respond
 - collection_interval (optional) - how frequent this receiver should poll [chrony]

receiver/chronyreceiver/internal/chrony/util.go

@@ -46,10 +46,13 @@ func SplitNetworkEndpoint(addr string) (network, endpoint string, err error) {
 		if host == "" {
 			return "", "", fmt.Errorf("missing hostname: %w", ErrInvalidNetwork)
 		}
-	case "unix":
+	case "unix", "unixgram":
 		if _, err := os.Stat(endpoint); err != nil {
 			return "", "", err
 		}
+		// Chrony uses socket type DGRAM which converts to `unixgram`,
+		// in order to preserve configuration of existing clients, this will overwrite the network type
+		network = "unixgram"
 	default:
 		return "", "", fmt.Errorf("unknown network %s: %w", network, ErrInvalidNetwork)
 	}

receiver/chronyreceiver/internal/chrony/util_test.go

@@ -58,7 +58,7 @@ func TestSplitNetworkEndpoint(t *testing.T) {
 		{
 			scenario: "A valid UNIX network",
 			in:       fmt.Sprintf("unix://%s", path),
-			network:  "unix",
+			network:  "unixgram",
 			endpoint: path,
 			err:      nil,
 		},

unreleased/msg_update-chrony-receiver.yaml

@@ -0,0 +1,16 @@
+# 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. filelogreceiver)
+component: chronyreceiver
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: When trying to read from socket, the socket type was incorrect
+
+# One or more tracking issues related to the change
+issues: [13862]
+
+# (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: