Fix plugin trying to run --debug event and not logging to files

Args[0] is no longer guaranteed to be the event's name. We have a proper
command now.

Signed-off-by: Dimitris Karakasilis <dimitris@karakasilis.me>

cmd/discovery/client/client.go

@@ -20,9 +20,6 @@ import (
 	"github.com/kairos-io/kairos-challenger/pkg/constants"
 )
 
-// Because of how go-pluggable works, we can't just print to stdout
-const LOGFILE = "/tmp/kcrypt-challenger-client.log"
-
 // Retry delays for different failure types
 const (
 	TPMRetryDelay     = 100 * time.Millisecond // Brief delay for TPM hardware busy/unavailable
@@ -45,17 +42,12 @@ func NewClientWithLogger(logger types.KairosLogger) (*Client, error) {
 	return &Client{Config: conf, Logger: logger}, nil
 }
 
-func (c *Client) Start() error {
-	if err := os.RemoveAll(LOGFILE); err != nil { // Start fresh
-		return fmt.Errorf("removing the logfile: %w", err)
-	}
-
+func (c *Client) Start(eventType pluggable.EventType) error {
 	factory := pluggable.NewPluginFactory()
 
 	// Input: bus.EventInstallPayload
 	// Expected output: map[string]string{}
 	factory.Add(bus.EventDiscoveryPassword, func(e *pluggable.Event) pluggable.EventResponse {
-
 		b := &block.Partition{}
 		err := json.Unmarshal([]byte(e.Data), b)
 		if err != nil {
@@ -77,7 +69,7 @@ func (c *Client) Start() error {
 		}
 	})
 
-	return factory.Run(pluggable.EventType(os.Args[1]), os.Stdin, os.Stdout)
+	return factory.Run(eventType, os.Stdin, c.Logger)
 }
 
 // ❯ echo '{ "data": "{ \\"label\\": \\"LABEL\\" }"}' | sudo -E WSS_SERVER="http://localhost:8082/challenge" ./challenger "discovery.password"

cmd/discovery/main.go

@@ -12,6 +12,7 @@ import (
 	"github.com/kairos-io/kairos-sdk/kcrypt/bus"
 	"github.com/kairos-io/kairos-sdk/types"
 	"github.com/kairos-io/tpm-helpers"
+	"github.com/mudler/go-pluggable"
 	"github.com/spf13/cobra"
 )
 
@@ -187,7 +188,7 @@ with kcrypt and other tools.`, bus.EventDiscoveryPassword),
 	Example: fmt.Sprintf(`  # Plugin mode (for integration with kcrypt)
   echo '{"data": "{\"name\": \"/dev/sda2\", \"uuid\": \"12345-abcde\", \"label\": \"encrypted-data\"}"}' | kcrypt-discovery-challenger %s`, bus.EventDiscoveryPassword),
 	RunE: func(cmd *cobra.Command, args []string) error {
-		return runPluginMode()
+		return runPluginMode(bus.EventDiscoveryPassword)
 	},
 }
 
@@ -310,7 +311,7 @@ func runGetPassphrase(flags *GetFlags) error {
 }
 
 // runPluginMode handles plugin event commands
-func runPluginMode() error {
+func runPluginMode(eventType pluggable.EventType) error {
 	// In plugin mode, use quiet=true to log to file instead of console
 	// Log level depends on debug flag, write logs to /var/log/kairos/kcrypt-discovery-challenger.log
 	var logLevel string
@@ -320,13 +321,14 @@ func runPluginMode() error {
 		logLevel = "error"
 	}
 
-	logger := types.NewKairosLogger("kcrypt-discovery-challenger", logLevel, true)
+	logger := types.NewKairosLoggerWithExtraDirs("kcrypt-discovery-challenger", logLevel, true, "/var/log/kairos")
+	logger.Debugf("Debug mode enabled for plugin mode")
 	c, err := client.NewClientWithLogger(logger)
 	if err != nil {
 		return fmt.Errorf("creating client: %w", err)
 	}
 
-	err = c.Start()
+	err = c.Start(eventType)
 	if err != nil {
 		return fmt.Errorf("starting plugin: %w", err)
 	}