// Copyright 2013 The Prometheus 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 main

import (
	"fmt"
	"testing"
)

func benchmarkExporter(times int, b *testing.B) {
	input := []string{
		"foo1:2|c",
		"foo2:3|g",
		"foo3:200|ms",
		"foo4:100|c|#tag1:bar,tag2:baz",
		"foo5:100|c|#tag1:bar,#tag2:baz",
		"foo6:100|c|#09digits:0,tag.with.dots:1",
		"foo10:100|c|@0.1|#tag1:bar,#tag2:baz",
		"foo11:100|c|@0.1|#tag1:foo:bar",
		"foo15:200|ms:300|ms:5|c|@0.1:6|g\nfoo15a:1|c:5|ms",
		"some_very_useful_metrics_with_quite_a_log_name:13|c",
	}
	bytesInput := make([]string, len(input)*times)
	for run := 0; run < times; run++ {
		for i := 0; i < len(input); i++ {
			bytesInput[run*len(input)+i] = fmt.Sprintf("run%d%s", run, input[i])
		}
	}
	for n := 0; n < b.N; n++ {
		l := StatsDUDPListener{}
		// there are more events than input lines, need bigger buffer
		events := make(chan Events, len(bytesInput)*times*2)

		for i := 0; i < times; i++ {
			for _, line := range bytesInput {
				l.handlePacket([]byte(line), events)
			}
		}
	}
}

func BenchmarkExporter1(b *testing.B) {
	benchmarkExporter(1, b)
}
func BenchmarkExporter5(b *testing.B) {
	benchmarkExporter(5, b)
}
func BenchmarkExporter50(b *testing.B) {
	benchmarkExporter(50, b)
}
