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// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. Elasticsearch B.V. 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.

// +build go1.10

package apmmongo_test

import (
	"context"
	"testing"

	"go.mongodb.org/mongo-driver/bson"
	"go.mongodb.org/mongo-driver/event"

	"go.elastic.co/apm"
	"go.elastic.co/apm/apmtest"
	"go.elastic.co/apm/module/apmmongo"
)

func BenchmarkCommandMonitor(b *testing.B) {
	cm := apmmongo.CommandMonitor()
	command := mustRawBSON(bson.D{{Key: "find", Value: "collection"}})

	tracer := apmtest.NewDiscardTracer()
	tracer.SetMaxSpans(b.N)
	defer tracer.Close()

	tx := tracer.StartTransaction("name", "type")
	defer tx.End()
	ctx := apm.ContextWithTransaction(context.Background(), tx)

	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		cm.Started(ctx, &event.CommandStartedEvent{
			DatabaseName: "test_db",
			CommandName:  "find",
			RequestID:    int64(i),
			ConnectionID: "rainbow",
			Command:      command,
		})
		cm.Succeeded(ctx, &event.CommandSucceededEvent{
			CommandFinishedEvent: event.CommandFinishedEvent{
				CommandName:  "find",
				RequestID:    int64(i),
				ConnectionID: "rainbow",
			},
		})
	}
}
