protocol/triple/triple_protocol/error_example_test.go

/*
 * 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 triple_protocol_test

import (
	"errors"
	"fmt"
)

import (
	tri "dubbo.apache.org/dubbo-go/v3/protocol/triple/triple_protocol"
)

func ExampleError_Message() {
	err := fmt.Errorf(
		"another: %w",
		tri.NewError(tri.CodeUnavailable, errors.New("failed to foo")),
	)
	if connectErr := (&tri.Error{}); errors.As(err, &connectErr) {
		fmt.Println("underlying error message:", connectErr.Message())
	}

	// Output:
	// underlying error message: failed to foo
}