Adding upstream version 1.34.4.

Signed-off-by: Daniel Baumann <daniel@debian.org>

plugins/inputs/intel_baseband/sock_connector.go

@@ -0,0 +1,102 @@
+//go:build linux && amd64
+
+package intel_baseband
+
+import (
+	"errors"
+	"fmt"
+	"net"
+	"time"
+)
+
+const (
+	// Command code
+	clearLogCmdID   = 0x4
+	deviceDataCmdID = 0x9
+)
+
+type socketConnector struct {
+	pathToSocket  string
+	accessTimeout time.Duration
+	connection    net.Conn
+}
+
+func (sc *socketConnector) dumpTelemetryToLog() error {
+	// clean the log to have only the latest metrics in the file
+	err := sc.sendCommandToSocket(clearLogCmdID)
+	if err != nil {
+		return fmt.Errorf("failed to send clear log command: %w", err)
+	}
+
+	// fill the file with the latest metrics
+	err = sc.sendCommandToSocket(deviceDataCmdID)
+	if err != nil {
+		return fmt.Errorf("failed to send device data command: %w", err)
+	}
+	return nil
+}
+
+func (sc *socketConnector) sendCommandToSocket(c byte) error {
+	err := sc.connect()
+	if err != nil {
+		return err
+	}
+	defer sc.close()
+	err = sc.writeCommandToSocket(c)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func (sc *socketConnector) writeCommandToSocket(c byte) error {
+	if sc.connection == nil {
+		return errors.New("connection had not been established before")
+	}
+	var err error
+	if sc.accessTimeout == 0 {
+		err = sc.connection.SetWriteDeadline(time.Time{})
+	} else {
+		err = sc.connection.SetWriteDeadline(time.Now().Add(sc.accessTimeout))
+	}
+
+	if err != nil {
+		return fmt.Errorf("failed to set timeout for request: %w", err)
+	}
+
+	_, err = sc.connection.Write([]byte{c, 0x00})
+	if err != nil {
+		return fmt.Errorf("failed to send request to socket: %w", err)
+	}
+	return nil
+}
+
+func (sc *socketConnector) connect() error {
+	connection, err := net.Dial("unix", sc.pathToSocket)
+	if err != nil {
+		return fmt.Errorf("failed to connect to the socket: %w", err)
+	}
+
+	sc.connection = connection
+	return nil
+}
+
+func (sc *socketConnector) close() error {
+	if sc.connection == nil {
+		return nil
+	}
+
+	err := sc.connection.Close()
+	sc.connection = nil
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func newSocketConnector(pathToSocket string, accessTimeout time.Duration) *socketConnector {
+	return &socketConnector{
+		pathToSocket:  pathToSocket,
+		accessTimeout: accessTimeout,
+	}
+}