created hws module

hws/logger.go

@@ -0,0 +1,44 @@
+package hws
+
+import (
+	"errors"
+	"fmt"
+	"net/url"
+
+	"github.com/rs/zerolog"
+)
+
+type logger struct {
+	logger       *zerolog.Logger
+	ignoredPaths []string
+}
+
+// Server.AddLogger adds a logger to the server to use for request logging.
+func (server *Server) AddLogger(zlogger *zerolog.Logger) error {
+	if zlogger == nil {
+		return errors.New("Unable to add logger, no logger provided")
+	}
+	server.logger = &logger{
+		logger: zlogger,
+	}
+	return nil
+}
+
+// Server.LoggerIgnorePaths sets a list of URL paths to ignore logging for.
+// Path should match the url.URL.Path field, see https://pkg.go.dev/net/url#URL
+// Useful for ignoring requests to CSS files or favicons
+func (server *Server) LoggerIgnorePaths(paths ...string) error {
+	for _, path := range paths {
+		u, err := url.Parse(path)
+		valid := err == nil &&
+			u.Scheme == "" &&
+			u.Host == "" &&
+			u.RawQuery == "" &&
+			u.Fragment == ""
+		if !valid {
+			return fmt.Errorf("Invalid path: '%s'", path)
+		}
+	}
+	server.logger.ignoredPaths = paths
+	return nil
+}