Exemple #1
0
func getClient() *bigtable.Client {
	if client == nil {
		var err error
		client, err = bigtable.NewClient(context.Background(), config.Project, config.Zone, config.Cluster)
		if err != nil {
			log.Fatalf("Making bigtable.Client: %v", err)
		}
	}
	return client
}
Exemple #2
0
func main() {
	flag.Parse()

	if *tableName == prototypeTableName {
		log.Fatal("Can't use " + prototypeTableName + " as your table.")
	}

	// Let the library get credentials from file.
	os.Setenv("GOOGLE_APPLICATION_CREDENTIALS", *credFile)

	// Make an admin client.
	var err error
	if adminClient, err = bigtable.NewAdminClient(context.Background(), *project, *zone, *cluster); err != nil {
		log.Fatal("Bigtable NewAdminClient:", err)
	}

	// Make a regular client.
	client, err = bigtable.NewClient(context.Background(), *project, *zone, *cluster)
	if err != nil {
		log.Fatal("Bigtable NewClient:", err)
	}

	// Open the table.
	table = client.Open(*tableName)

	// Rebuild the table if the command-line flag is set.
	if *rebuild {
		if err := rebuildTable(); err != nil {
			log.Fatal(err)
		}
	}

	// Set up HTML handlers, and start the web server.
	http.HandleFunc("/search", handleSearch)
	http.HandleFunc("/content", handleContent)
	http.HandleFunc("/add", handleAddDoc)
	http.HandleFunc("/clearindex", handleClear)
	http.HandleFunc("/", handleMain)
	log.Fatal(http.ListenAndServe(":8080", nil))
}
Exemple #3
0
func main() {
	ctx := context.Background()

	// Set up admin client, tables, and column families.
	// NewAdminClient uses Application Default Credentials to authenticate.
	adminClient, err := bigtable.NewAdminClient(ctx, project, zone, cluster)
	if err != nil {
		log.Fatalf("Unable to create a table admin client. %v", err)
	}
	tables, err := adminClient.Tables(ctx)
	if err != nil {
		log.Fatalf("Unable to fetch table list. %v", err)
	}
	if !sliceContains(tables, tableName) {
		if err := adminClient.CreateTable(ctx, tableName); err != nil {
			log.Fatalf("Unable to create table: %v. %v", tableName, err)
		}
	}
	tblInfo, err := adminClient.TableInfo(ctx, tableName)
	if err != nil {
		log.Fatalf("Unable to read info for table: %v. %v", tableName, err)
	}
	if !sliceContains(tblInfo.Families, familyName) {
		if err := adminClient.CreateColumnFamily(ctx, tableName, familyName); err != nil {
			log.Fatalf("Unable to create column family: %v. %v", familyName, err)
		}
	}
	adminClient.Close()

	// Set up Bigtable data operations client.
	// NewClient uses Application Default Credentials to authenticate.
	client, err = bigtable.NewClient(ctx, project, zone, cluster)
	if err != nil {
		log.Fatalf("Unable to create data operations client. %v", err)
	}

	http.Handle("/", appHandler(mainHandler))
	appengine.Main() // Never returns.
}
Exemple #4
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))
}