更新waf插件，丰富规则命中时日志内容 (#537)

plugins/wasm-go/extensions/waf/wasmplugin/logger.go

@@ -0,0 +1,47 @@
+package wasmplugin
+
+import (
+	"io"
+
+	"github.com/corazawaf/coraza/v3/debuglog"
+	"github.com/tetratelabs/proxy-wasm-go-sdk/proxywasm"
+)
+
+type logger struct {
+	debuglog.Logger
+}
+
+var _ debuglog.Logger = logger{}
+
+var logPrinterFactory = func(io.Writer) debuglog.Printer {
+	return func(lvl debuglog.Level, message, fields string) {
+		switch lvl {
+		case debuglog.LevelTrace:
+			proxywasm.LogTracef("%s %s", message, fields)
+		case debuglog.LevelDebug:
+			proxywasm.LogDebugf("%s %s", message, fields)
+		case debuglog.LevelInfo:
+			proxywasm.LogInfof("%s %s", message, fields)
+		case debuglog.LevelWarn:
+			proxywasm.LogWarnf("%s %s", message, fields)
+		case debuglog.LevelError:
+			proxywasm.LogErrorf("%s %s", message, fields)
+		default:
+		}
+	}
+}
+
+func DefaultLogger() debuglog.Logger {
+	return logger{
+		debuglog.DefaultWithPrinterFactory(logPrinterFactory),
+	}
+}
+
+func (l logger) WithLevel(lvl debuglog.Level) debuglog.Logger {
+	return logger{l.Logger.WithLevel(lvl)}
+}
+
+func (l logger) WithOutput(_ io.Writer) debuglog.Logger {
+	proxywasm.LogWarn("Ignoring SecDebugLog directive, debug logs are always routed to proxy logs")
+	return l
+}