Create slog.go

thrift/slog.go

@@ -0,0 +1,55 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package thrift
+
+import (
+	"encoding/json"
+	"fmt"
+	"strings"
+)
+
+// SlogTStructWrapper is a wrapper used by the compiler to wrap TStruct and
+// TException to be better logged by slog.
+ type SlogTStructWrapper struct {
+	 Type  string  `json:"type"`
+	 Value TStruct `json:"value"`
+ }
+
+ var (
+	 _ fmt.Stringer   = SlogTStructWrapper{}
+	 _ json.Marshaler = SlogTStructWrapper{}
+ )
+
+ func (w SlogTStructWrapper) MarshalJSON() ([]byte, error) {
+	 // Use an alias to avoid infinite recursion
+	 type alias SlogTStructWrapper
+	 return json.Marshal(alias(w))
+ }
+
+ func (w SlogTStructWrapper) String() string {
+	 var sb strings.Builder
+	 sb.WriteString(w.Type)
+	 if err := json.NewEncoder(&sb).Encode(w.Value); err != nil {
+		 // Should not happen, but just in case
+		 return fmt.Sprintf("%s: %v", w.Type, w.Value)
+	 }
+	 // json encoder will write an additional \n at the end, get rid of it
+	 return strings.TrimSuffix(sb.String(), "\n")
+ }