From 8d869b0d382cb484253f332112b4fec6e9b4b4d8 Mon Sep 17 00:00:00 2001
From: Jessie Liu <jessieqliu@google.com>
Date: Fri, 6 Sep 2024 21:40:24 +0000
Subject: [PATCH] text handler and experiment logging

---
 launcher/internal/experiments/experiments.go | 12 ++++++++++++
 launcher/launcher/main.go                    |  3 ++-
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/launcher/internal/experiments/experiments.go b/launcher/internal/experiments/experiments.go
index d7a5b891..dacc8ff9 100644
--- a/launcher/internal/experiments/experiments.go
+++ b/launcher/internal/experiments/experiments.go
@@ -4,6 +4,7 @@ package experiments
 import (
 	"encoding/json"
 	"fmt"
+	"log/slog"
 	"os"
 )
 
@@ -44,3 +45,14 @@ func readJSONInput(b []byte) (Experiments, error) {
 	}
 	return experiments, nil
 }
+
+func (e Experiments) Log(logger *slog.Logger) {
+	logger.Info("Experiment settings",
+		slog.Bool("test_feature", e.EnableTestFeatureForImage),
+		slog.Bool("signed_container_image", e.EnableSignedContainerImage),
+		slog.Bool("on_demand_attestation", e.EnableOnDemandAttestation),
+		slog.Bool("memory_monitoring", e.EnableMemoryMonitoring),
+		slog.Bool("signed_container_cache", e.EnableSignedContainerCache),
+		slog.Bool("measure_memory_monitoring", e.EnableMeasureMemoryMonitor),
+	)
+}
diff --git a/launcher/launcher/main.go b/launcher/launcher/main.go
index c9ee3e47..efac0d82 100644
--- a/launcher/launcher/main.go
+++ b/launcher/launcher/main.go
@@ -83,7 +83,7 @@ func main() {
 	}
 	defer serialConsole.Close()
 
-	handler := slog.NewJSONHandler(io.MultiWriter(os.Stdout, serialConsole), nil)
+	handler := slog.NewTextHandler(io.MultiWriter(os.Stdout, serialConsole), nil)
 	logger = slog.New(handler)
 
 	logger.Info(welcomeMessage, "build_commit", BuildCommit)
@@ -122,6 +122,7 @@ func main() {
 		logger.Warn(fmt.Sprintf("failed to read experiment file: %v\n", err))
 		// do not fail if experiment retrieval fails
 	}
+	e.Log(logger)
 	launchSpec.Experiments = e
 
 	defer func() {