/*
 * 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 v3

import (
	"context"

	envoy_core "github.com/envoyproxy/go-control-plane/envoy/config/core/v3"
	envoy_sd "github.com/envoyproxy/go-control-plane/envoy/service/discovery/v3"
	envoy_xds "github.com/envoyproxy/go-control-plane/pkg/server/v3"
)

type NoopCallbacks struct{}

func (c *NoopCallbacks) OnFetchRequest(context.Context, *envoy_sd.DiscoveryRequest) error {
	return nil
}

func (c *NoopCallbacks) OnFetchResponse(*envoy_sd.DiscoveryRequest, *envoy_sd.DiscoveryResponse) {
}

func (c *NoopCallbacks) OnStreamOpen(context.Context, int64, string) error {
	return nil
}

func (c *NoopCallbacks) OnStreamClosed(int64, *envoy_core.Node) {
}

func (c *NoopCallbacks) OnStreamRequest(int64, *envoy_sd.DiscoveryRequest) error {
	return nil
}

func (c *NoopCallbacks) OnStreamResponse(context.Context, int64, *envoy_sd.DiscoveryRequest, *envoy_sd.DiscoveryResponse) {
}

func (c *NoopCallbacks) OnDeltaStreamOpen(ctx context.Context, i int64, s string) error {
	return nil
}

func (c *NoopCallbacks) OnDeltaStreamClosed(int64, *envoy_core.Node) {
}

func (c *NoopCallbacks) OnStreamDeltaRequest(i int64, request *envoy_sd.DeltaDiscoveryRequest) error {
	return nil
}

func (c *NoopCallbacks) OnStreamDeltaResponse(i int64, request *envoy_sd.DeltaDiscoveryRequest, response *envoy_sd.DeltaDiscoveryResponse) {
}

var _ envoy_xds.Callbacks = &NoopCallbacks{}
