示例#1
0
func main() {
	var err error
	config, err = cbtrc.Load()
	if err != nil {
		log.Fatal(err)
	}
	config.RegisterFlags()

	flag.Usage = usage
	flag.Parse()
	if err := config.CheckFlags(); err != nil {
		log.Fatal(err)
	}
	if config.Creds != "" {
		os.Setenv("GOOGLE_APPLICATION_CREDENTIALS", config.Creds)
	}
	if flag.NArg() == 0 {
		usage()
		os.Exit(1)
	}

	if *oFlag != "" {
		f, err := os.Create(*oFlag)
		if err != nil {
			log.Fatal(err)
		}
		defer func() {
			if err := f.Close(); err != nil {
				log.Fatal(err)
			}
		}()
		os.Stdout = f
	}

	ctx := context.Background()
	for _, cmd := range commands {
		if cmd.Name == flag.Arg(0) {
			cmd.do(ctx, flag.Args()[1:]...)
			return
		}
	}
	log.Fatalf("Unknown command %q", flag.Arg(0))
}
示例#2
0
func main() {
	flag.Usage = func() {
		fmt.Printf("Usage: scantest [options] <table_name>\n\n")
		flag.PrintDefaults()
	}

	var err error
	config, err = cbtrc.Load()
	if err != nil {
		log.Fatal(err)
	}
	config.RegisterFlags()

	flag.Parse()
	if err := config.CheckFlags(); err != nil {
		log.Fatal(err)
	}
	if config.Creds != "" {
		os.Setenv("GOOGLE_APPLICATION_CREDENTIALS", config.Creds)
	}
	if flag.NArg() != 1 {
		flag.Usage()
		os.Exit(1)
	}

	table := flag.Arg(0)

	log.Printf("Dialing connections...")
	client, err = bigtable.NewClient(context.Background(), config.Project, config.Instance)
	if err != nil {
		log.Fatalf("Making bigtable.Client: %v", err)
	}
	defer client.Close()

	log.Printf("Starting scan test... (run for %v)", *runFor)
	tbl := client.Open(table)
	sem := make(chan int, *numScans) // limit the number of requests happening at once
	var scans stats

	stopTime := time.Now().Add(*runFor)
	var wg sync.WaitGroup
	for time.Now().Before(stopTime) {
		sem <- 1
		wg.Add(1)
		go func() {
			defer wg.Done()
			defer func() { <-sem }()

			ok := true
			opStart := time.Now()
			defer func() {
				scans.Record(ok, time.Since(opStart))
			}()

			// Start at a random row key
			key := fmt.Sprintf("user%d", rand.Int63())
			limit := bigtable.LimitRows(int64(*rowLimit))
			noop := func(bigtable.Row) bool { return true }
			if err := tbl.ReadRows(context.Background(), bigtable.NewRange(key, ""), noop, limit); err != nil {
				log.Printf("Error during scan: %v", err)
				ok = false
			}
		}()
	}
	wg.Wait()

	agg := stat.NewAggregate("scans", scans.ds, scans.tries-scans.ok)
	log.Printf("Scans (%d ok / %d tries):\nscan times:\n%v\nthroughput (rows/second):\n%v",
		scans.ok, scans.tries, agg, throughputString(agg))
}
示例#3
0
func main() {
	var err error
	config, err = cbtrc.Load()
	if err != nil {
		log.Fatal(err)
	}
	config.RegisterFlags()

	flag.Parse()
	if err := config.CheckFlags(); err != nil {
		log.Fatal(err)
	}
	if config.Creds != "" {
		os.Setenv("GOOGLE_APPLICATION_CREDENTIALS", config.Creds)
	}
	if flag.NArg() != 0 {
		flag.Usage()
		os.Exit(1)
	}

	log.Printf("Dialing connections...")
	client, err = bigtable.NewClient(context.Background(), config.Project, config.Zone, config.Cluster)
	if err != nil {
		log.Fatalf("Making bigtable.Client: %v", err)
	}
	defer client.Close()
	adminClient, err = bigtable.NewAdminClient(context.Background(), config.Project, config.Zone, config.Cluster)
	if err != nil {
		log.Fatalf("Making bigtable.AdminClient: %v", err)
	}
	defer adminClient.Close()

	// Create a scratch table.
	log.Printf("Setting up scratch table...")
	if err := adminClient.CreateTable(context.Background(), *scratchTable); err != nil {
		log.Fatalf("Making scratch table %q: %v", *scratchTable, err)
	}
	if err := adminClient.CreateColumnFamily(context.Background(), *scratchTable, "f"); err != nil {
		log.Fatalf("Making scratch table column family: %v", err)
	}
	// Upon a successful run, delete the table. Don't bother checking for errors.
	defer adminClient.DeleteTable(context.Background(), *scratchTable)

	log.Printf("Starting load test... (run for %v)", *runFor)
	tbl := client.Open(*scratchTable)
	sem := make(chan int, 100) // limit the number of requests happening at once
	var reads, writes stats
	stopTime := time.Now().Add(*runFor)
	var wg sync.WaitGroup
	for time.Now().Before(stopTime) {
		sem <- 1
		wg.Add(1)
		go func() {
			defer wg.Done()
			defer func() { <-sem }()

			ok := true
			opStart := time.Now()
			var stats *stats
			defer func() {
				stats.Record(ok, time.Since(opStart))
			}()

			row := fmt.Sprintf("row%d", rand.Intn(100)) // operate on 1 of 100 rows

			switch rand.Intn(10) {
			default:
				// read
				stats = &reads
				_, err := tbl.ReadRow(context.Background(), row, bigtable.RowFilter(bigtable.LatestNFilter(1)))
				if err != nil {
					log.Printf("Error doing read: %v", err)
					ok = false
				}
			case 0, 1, 2, 3, 4:
				// write
				stats = &writes
				mut := bigtable.NewMutation()
				mut.Set("f", "col", bigtable.Now(), bytes.Repeat([]byte("0"), 1<<10)) // 1 KB write
				if err := tbl.Apply(context.Background(), row, mut); err != nil {
					log.Printf("Error doing mutation: %v", err)
					ok = false
				}
			}
		}()
	}
	wg.Wait()

	log.Printf("Reads (%d ok / %d tries):\n%v", reads.ok, reads.tries, newAggregate(reads.ds))
	log.Printf("Writes (%d ok / %d tries):\n%v", writes.ok, writes.tries, newAggregate(writes.ds))
}