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package clients
import (
"bytes"
"context"
"fmt"
"os"
"path/filepath"
"testing"
"time"
"github.com/mimecast/dtail/internal/config"
"github.com/mimecast/dtail/internal/io/dlog"
"github.com/mimecast/dtail/internal/source"
"sync"
)
func setupBenchmarkData(b *testing.B, lines int) string {
b.Helper()
tmpDir := b.TempDir()
testFile := filepath.Join(tmpDir, "benchmark_data.log")
f, err := os.Create(testFile)
if err != nil {
b.Fatalf("Failed to create test file: %v", err)
}
defer f.Close()
// Create test data
for i := 0; i < lines; i++ {
line := fmt.Sprintf("INFO|1002-071143|1|test.go:%d|8|%d|7|0.21|471h0m21s|MAPREDUCE:STATS|currentConnections=%d|lifetimeConnections=%d|pattern=test-%d|data=%s\n",
i%100, i%50, i%10, i, i%5, "some-test-data-that-makes-the-line-longer")
f.WriteString(line)
}
return testFile
}
func BenchmarkDGrep(b *testing.B) {
benchmarkDGrepWithSize(b, 100000) // 100k lines
}
// Benchmark with different file sizes
func BenchmarkDGrepSmallFile(b *testing.B) {
benchmarkDGrepWithSize(b, 1000) // 1k lines
}
func BenchmarkDGrepMediumFile(b *testing.B) {
benchmarkDGrepWithSize(b, 50000) // 50k lines
}
func BenchmarkDGrepLargeFile(b *testing.B) {
benchmarkDGrepWithSize(b, 500000) // 500k lines
}
func benchmarkDGrepWithSize(b *testing.B, lines int) {
// Setup config. The direct-output read path is the only runtime path.
config.Server = &config.ServerConfig{
MaxConcurrentCats: 10,
MaxConcurrentTails: 50,
MaxLineLength: 1024 * 1024,
}
config.Common = &config.CommonConfig{
Logger: "none",
LogLevel: "error",
}
config.Client = &config.ClientConfig{
TermColorsEnable: false,
}
// Initialize logging
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
wg := &sync.WaitGroup{}
wg.Add(1)
dlog.Start(ctx, wg, source.Client)
// Create test data
testFile := setupBenchmarkData(b, lines)
b.ResetTimer()
for i := 0; i < b.N; i++ {
// Create grep client
args := config.Args{
ServersStr: "serverless",
QueryStr: "",
What: testFile,
RegexStr: "pattern=test-1",
Serverless: true,
Plain: true,
}
client, err := NewGrepClient(args)
if err != nil {
b.Fatalf("Failed to create grep client: %v", err)
}
// Capture output
oldStdout := os.Stdout
r, w, _ := os.Pipe()
os.Stdout = w
// Run grep
statusCh := make(chan int, 1)
go func() {
status := client.Start(ctx, nil) // nil for statsCh
statusCh <- status
}()
// Wait for completion or timeout
select {
case status := <-statusCh:
if status != 0 {
b.Errorf("Grep failed with status: %d", status)
}
case <-time.After(30 * time.Second):
b.Error("Grep timed out")
}
// Restore stdout
w.Close()
os.Stdout = oldStdout
// Read captured output
var buf bytes.Buffer
buf.ReadFrom(r)
}
// Report custom metrics
b.ReportMetric(float64(lines), "lines/op")
b.ReportMetric(float64(lines)/b.Elapsed().Seconds(), "lines/sec")
}
|
