chore: optimize iphlpapi

Signed-off-by: Jan-Otto Kröpke <[email protected]>

docs/collector.mssql.md

@@ -26,7 +26,7 @@ Port of MSSQL server used for `windows_mssql_info` metric. Default is `1433`.
 
 | Name                                                               | Description                                                                                                                                                                                                                                                                                  | Type    | Labels                        |
 |--------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------|-------------------------------|
-| `windows_mssql_info`                                               | Returns infomation about the MSSQL server running on port 1433                                                                                                                                                                                                                               | gauge   | `version`                     |
+| `windows_mssql_info`                                               | Returns information about the MSSQL server running on port 1433                                                                                                                                                                                                                              | gauge   | `version`                     |
 | `windows_mssql_collector_duration_seconds`                         | The time taken for each sub-collector to return                                                                                                                                                                                                                                              | gauge   | `collector`, `mssql_instance` |
 | `windows_mssql_collector_success`                                  | 1 if sub-collector succeeded, 0 otherwise                                                                                                                                                                                                                                                    | gauge   | `collector`, `mssql_instance` |
 | `windows_mssql_accessmethods_au_batch_cleanups`                    | The total number of batches that were completed successfully by the background task that cleans up deferred dropped allocation units                                                                                                                                                         | counter | `mssql_instance`              |

go.mod

@@ -3,6 +3,7 @@ module github.com/prometheus-community/windows_exporter
 go 1.23
 
 require (
+	github.com/Microsoft/go-winio v0.6.2
 	github.com/Microsoft/hcsshim v0.12.9
 	github.com/alecthomas/kingpin/v2 v2.4.0
 	github.com/bmatcuk/doublestar/v4 v4.7.1
@@ -19,7 +20,6 @@ require (
 )
 
 require (
-	github.com/Microsoft/go-winio v0.6.2 // indirect
 	github.com/alecthomas/units v0.0.0-20240927000941-0f3dac36c52b // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect

internal/collector/mssql/mssql.go

@@ -4271,7 +4271,7 @@ func (c *Collector) getMSSQLServerVersion(port uint16) (string, string, error) {
 		return "", "", fmt.Errorf("failed to open the process with PID %d: %w", pid, err)
 	}
 
-	defer windows.CloseHandle(hProcess)
+	defer windows.CloseHandle(hProcess) //nolint:errcheck
 
 	processFilePath, err := process.QueryFullProcessImageName(hProcess, process.ImageNameFormatWin32Path)
 	if err != nil {

internal/headers/iphlpapi/iphlpapi_test.go

@@ -22,6 +22,8 @@ func TestGetOwnerPIDOfTCPPort(t *testing.T) {
 	t.Parallel()
 
 	lister, err := net.Listen("tcp", "127.0.0.1:0")
+	require.NoError(t, err)
+
 	t.Cleanup(func() {
 		require.NoError(t, lister.Close())
 	})

internal/headers/iphlpapi/types.go

@@ -7,6 +7,8 @@ import (
 
 // MIB_TCPROW_OWNER_PID structure for IPv4.
 // https://learn.microsoft.com/en-us/windows/win32/api/tcpmib/ns-tcpmib-mib_tcprow_owner_pid
+//
+//nolint:unused
 type MIB_TCPROW_OWNER_PID struct {
 	dwState      MIB_TCP_STATE
 	dwLocalAddr  BigEndianUint32
@@ -18,6 +20,8 @@ type MIB_TCPROW_OWNER_PID struct {
 
 // MIB_TCP6ROW_OWNER_PID structure for IPv6.
 // https://learn.microsoft.com/en-us/windows/win32/api/tcpmib/ns-tcpmib-mib_tcp6row_owner_pid
+//
+//nolint:unused
 type MIB_TCP6ROW_OWNER_PID struct {
 	ucLocalAddr     [16]byte
 	dwLocalScopeId  uint32
@@ -83,5 +87,6 @@ type BigEndianUint32 uint32
 func (b BigEndianUint32) uint16() uint16 {
 	data := make([]byte, 2)
 	binary.BigEndian.PutUint16(data, uint16(b))
+
 	return binary.LittleEndian.Uint16(data)
 }