// Copyright 2020 OpenTelemetry Authors
//
// Licensed 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 receivertest

import (
	"context"
	"sync"

	"github.com/open-telemetry/opentelemetry-collector/consumer"
	"github.com/open-telemetry/opentelemetry-collector/consumer/consumerdata"
)

type MetricAppender struct {
	sync.RWMutex
	MetricsDataList []consumerdata.MetricsData
}

func NewMetricAppender() *MetricAppender {
	return &MetricAppender{}
}

var _ consumer.MetricsConsumerOld = (*MetricAppender)(nil)

func (ma *MetricAppender) ConsumeMetricsData(ctx context.Context, md consumerdata.MetricsData) error {
	ma.Lock()
	defer ma.Unlock()

	ma.MetricsDataList = append(ma.MetricsDataList, md)

	return nil
}
