feat: Add JSON logging

Signed-off-by: Julien Riou <julien@riou.xyz>

base/session_test.go

@@ -1,9 +1,32 @@
 package base
 
 import (
+	"encoding/json"
 	"testing"
 )
 
+func TestSessionJSON(t *testing.T) {
+	session := &Session{
+		Pid:             1,
+		User:            "test",
+		Db:              "db",
+		Client:          "127.0.0.1:5432",
+		State:           "active",
+		Query:           "select 1",
+		StateDuration:   1.5,
+		ApplicationName: "psql",
+	}
+
+	var got Session
+	if err := json.Unmarshal([]byte(session.JSON()), &got); err != nil {
+		t.Fatalf("invalid JSON: %v", err)
+	}
+
+	if got != *session {
+		t.Errorf("got %+v; want %+v", got, *session)
+	}
+}
+
 func TestSessionEqual(t *testing.T) {
 	tests := []struct {
 		name   string