Remove note about consumer groups

README.md

@@ -16,9 +16,6 @@ Get the package source:
 
     $ go get github.com/harlow/kinesis-consumer
 
-Note: This repo now requires the AWS SDK V2 package. If you are still using
-AWS SDK V1 then use: https://github.com/harlow/kinesis-consumer/releases/tag/v0.3.5
-
 ## Overview
 
 The consumer leverages a handler func that accepts a Kinesis record. The `Scan` method will consume all shards concurrently and call the callback func as it receives records from the stream.
@@ -119,7 +116,7 @@ The uniq identifier for a consumer is `[appName, streamName, shardID]`
 
 Note: The default storage is in-memory (no-op). Which means the scan will not persist any state and the consumer will start from the beginning of the stream each time it is re-started.
 
-The consumer accepts a `WithStore` option to set the storage layer:
+The consumer accpets a `WithStore` option to set the storage layer:
 
 ```go
 c, err := consumer.New(*stream, consumer.WithStore(db))
@@ -132,7 +129,7 @@ To persist scan progress choose one of the following storage layers:
 
 #### Redis
 
-The Redis checkpoint requires App Name, and Stream Name:
+The Redis checkpoint requries App Name, and Stream Name:
 
 ```go
 import store "github.com/harlow/kinesis-consumer/store/redis"
@@ -292,7 +289,7 @@ c, err := consumer.New(
 
 ### Logging
 
-Logging supports the basic built-in logging library or use third party external one, so long as
+Logging supports the basic built-in logging library or use thrid party external one, so long as
 it implements the Logger interface.
 
 For example, to use the builtin logging package, we wrap it with myLogger structure.
@@ -343,7 +340,7 @@ func main() {
 
 # Examples
 
-There are examples of producer and comsumer in the `/examples` directory. These should help give end-to-end examples of setting up consumers with different checkpoint strategies.
+There are example Produder and Consumer code in `/cmd` directory. These should help give end-to-end examples of setting up consumers with different checkpoint strategies.
 
 The examples run locally against [Kinesis Lite](https://github.com/mhart/kinesalite).
 
@@ -351,11 +348,11 @@ The examples run locally against [Kinesis Lite](https://github.com/mhart/kinesal
 
 Produce data to the stream:
 
-	$ cat examples/producer/users.txt  | go run examples/producer/main.go --stream myStream
+	$ cat cmd/producer/users.txt  | go run cmd/producer/main.go --stream myStream
 
 Consume data from the stream:
 
-	$ go run examples/consumer/main.go --stream myStream
+	$ go run cmd/consumer/main.go --stream myStream
 
 ## Contributing
 

allgroup.go

@@ -2,23 +2,22 @@ package consumer
 
 import (
 	"context"
-	"fmt"
 	"sync"
 	"time"
 
-	"github.com/aws/aws-sdk-go-v2/service/kinesis/types"
+	"github.com/aws/aws-sdk-go/service/kinesis"
+	"github.com/aws/aws-sdk-go/service/kinesis/kinesisiface"
 )
 
-// NewAllGroup returns an initialized AllGroup for consuming
+// NewAllGroup returns an intitialized AllGroup for consuming
 // all shards on a stream
-func NewAllGroup(ksis kinesisClient, store Store, streamName string, logger Logger) *AllGroup {
+func NewAllGroup(ksis kinesisiface.KinesisAPI, store Store, streamName string, logger Logger) *AllGroup {
 	return &AllGroup{
-		ksis:         ksis,
+		ksis:       ksis,
-		shards:       make(map[string]types.Shard),
+		shards:     make(map[string]*kinesis.Shard),
-		shardsClosed: make(map[string]chan struct{}),
+		streamName: streamName,
-		streamName:   streamName,
+		logger:     logger,
-		logger:       logger,
+		Store:      store,
-		Store:        store,
 	}
 }
 
@@ -26,119 +25,61 @@ func NewAllGroup(ksis kinesisClient, store Store, streamName string, logger Logg
 // caches a local list of the shards we are already processing
 // and routinely polls the stream looking for new shards to process.
 type AllGroup struct {
-	ksis       kinesisClient
+	ksis       kinesisiface.KinesisAPI
 	streamName string
 	logger     Logger
 	Store
 
-	shardMu      sync.Mutex
+	shardMu sync.Mutex
-	shards       map[string]types.Shard
+	shards  map[string]*kinesis.Shard
-	shardsClosed map[string]chan struct{}
 }
 
 // Start is a blocking operation which will loop and attempt to find new
 // shards on a regular cadence.
-func (g *AllGroup) Start(ctx context.Context, shardC chan types.Shard) error {
+func (g *AllGroup) Start(ctx context.Context, shardc chan *kinesis.Shard) {
-	// Note: while ticker is a rather naive approach to this problem,
+	var ticker = time.NewTicker(30 * time.Second)
-	// it actually simplifies a few things. I.e. If we miss a new shard
+	g.findNewShards(shardc)
-	// while AWS is resharding, we'll pick it up max 30 seconds later.
 
-	// It might be worth refactoring this flow to allow the consumer
+	// Note: while ticker is a rather naive approach to this problem,
+	// it actually simplies a few things. i.e. If we miss a new shard while
+	// AWS is resharding we'll pick it up max 30 seconds later.
+
+	// It might be worth refactoring this flow to allow the consumer to
 	// to notify the broker when a shard is closed. However, shards don't
 	// necessarily close at the same time, so we could potentially get a
 	// thundering heard of notifications from the consumer.
 
-	var ticker = time.NewTicker(30 * time.Second)
-
 	for {
-		if err := g.findNewShards(ctx, shardC); err != nil {
-			ticker.Stop()
-			return err
-		}
-
 		select {
 		case <-ctx.Done():
 			ticker.Stop()
-			return nil
+			return
 		case <-ticker.C:
+			g.findNewShards(shardc)
 		}
 	}
 }
 
-func (g *AllGroup) CloseShard(_ context.Context, shardID string) error {
-	g.shardMu.Lock()
-	defer g.shardMu.Unlock()
-	c, ok := g.shardsClosed[shardID]
-	if !ok {
-		return fmt.Errorf("closing unknown shard ID %q", shardID)
-	}
-	close(c)
-	return nil
-}
-
-func waitForCloseChannel(ctx context.Context, c <-chan struct{}) bool {
-	if c == nil {
-		// no channel means we haven't seen this shard in listShards, so it
-		// probably fell off the TRIM_HORIZON, and we can assume it's fully processed.
-		return true
-	}
-	select {
-	case <-ctx.Done():
-		return false
-	case <-c:
-		// the channel has been processed and closed by the consumer (CloseShard has been called)
-		return true
-	}
-}
-
 // findNewShards pulls the list of shards from the Kinesis API
 // and uses a local cache to determine if we are already processing
 // a particular shard.
-func (g *AllGroup) findNewShards(ctx context.Context, shardC chan types.Shard) error {
+func (g *AllGroup) findNewShards(shardc chan *kinesis.Shard) {
 	g.shardMu.Lock()
 	defer g.shardMu.Unlock()
 
 	g.logger.Log("[GROUP]", "fetching shards")
 
-	shards, err := listShards(ctx, g.ksis, g.streamName)
+	shards, err := listShards(g.ksis, g.streamName)
 	if err != nil {
 		g.logger.Log("[GROUP] error:", err)
-		return err
+		return
 	}
 
-	// We do two `for` loops, since we have to set up all the `shardClosed`
-	// channels before we start using any of them.  It's highly probable
-	// that Kinesis provides us the shards in dependency order (parents
-	// before children), but it doesn't appear to be a guarantee.
-	newShards := make(map[string]types.Shard)
 	for _, shard := range shards {
 		if _, ok := g.shards[*shard.ShardId]; ok {
 			continue
 		}
 		g.shards[*shard.ShardId] = shard
-		g.shardsClosed[*shard.ShardId] = make(chan struct{})
+		shardc <- shard
-		newShards[*shard.ShardId] = shard
 	}
-	// only new shards need to be checked for parent dependencies
-	for _, shard := range newShards {
-		shard := shard // Shadow shard, since we use it in goroutine
-		var parent1, parent2 <-chan struct{}
-		if shard.ParentShardId != nil {
-			parent1 = g.shardsClosed[*shard.ParentShardId]
-		}
-		if shard.AdjacentParentShardId != nil {
-			parent2 = g.shardsClosed[*shard.AdjacentParentShardId]
-		}
-		go func() {
-			// Asynchronously wait for all parents of this shard to be processed
-			// before providing it out to our client.  Kinesis guarantees that a
-			// given partition key's data will be provided to clients in-order,
-			// but when splits or joins happen, we need to process all parents prior
-			// to processing children or that ordering guarantee is not maintained.
-			if waitForCloseChannel(ctx, parent1) && waitForCloseChannel(ctx, parent2) {
-				shardC <- shard
-			}
-		}()
-	}
-	return nil
 }

client.go

@@ -1,14 +0,0 @@
-package consumer
-
-import (
-	"context"
-
-	"github.com/aws/aws-sdk-go-v2/service/kinesis"
-)
-
-// kinesisClient defines the interface of functions needed for the consumer
-type kinesisClient interface {
-	GetRecords(ctx context.Context, params *kinesis.GetRecordsInput, optFns ...func(*kinesis.Options)) (*kinesis.GetRecordsOutput, error)
-	ListShards(ctx context.Context, params *kinesis.ListShardsInput, optFns ...func(*kinesis.Options)) (*kinesis.ListShardsOutput, error)
-	GetShardIterator(ctx context.Context, params *kinesis.GetShardIteratorInput, optFns ...func(*kinesis.Options)) (*kinesis.GetShardIteratorOutput, error)
-}

cmd/consumer-dynamo/main.go

@@ -0,0 +1,142 @@
+package main
+
+import (
+	"context"
+	"expvar"
+	"flag"
+	"fmt"
+	"log"
+	"net"
+	"net/http"
+	"os"
+	"os/signal"
+
+	alog "github.com/apex/log"
+	"github.com/apex/log/handlers/text"
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/aws/awserr"
+	"github.com/aws/aws-sdk-go/aws/session"
+	"github.com/aws/aws-sdk-go/service/dynamodb"
+	"github.com/aws/aws-sdk-go/service/kinesis"
+	consumer "github.com/harlow/kinesis-consumer"
+	storage "github.com/harlow/kinesis-consumer/store/ddb"
+)
+
+// kick off a server for exposing scan metrics
+func init() {
+	sock, err := net.Listen("tcp", "localhost:8080")
+	if err != nil {
+		log.Printf("net listen error: %v", err)
+	}
+	go func() {
+		fmt.Println("Metrics available at http://localhost:8080/debug/vars")
+		http.Serve(sock, nil)
+	}()
+}
+
+// A myLogger provides a minimalistic logger satisfying the Logger interface.
+type myLogger struct {
+	logger alog.Logger
+}
+
+// Log logs the parameters to the stdlib logger. See log.Println.
+func (l *myLogger) Log(args ...interface{}) {
+	l.logger.Infof("producer: %v", args...)
+}
+
+func main() {
+	// Wrap myLogger around  apex logger
+	log := &myLogger{
+		logger: alog.Logger{
+			Handler: text.New(os.Stdout),
+			Level:   alog.DebugLevel,
+		},
+	}
+
+	var (
+		app             = flag.String("app", "", "Consumer app name")
+		stream          = flag.String("stream", "", "Stream name")
+		table           = flag.String("table", "", "Checkpoint table name")
+		kinesisEndpoint = flag.String("endpoint", "http://localhost:4567", "Kinesis endpoint")
+		awsRegion       = flag.String("region", "us-west-2", "AWS Region")
+	)
+	flag.Parse()
+
+	// New Kinesis and DynamoDB clients (if you need custom config)
+	sess, err := session.NewSession(aws.NewConfig())
+	if err != nil {
+		log.Log("new session error: %v", err)
+	}
+	myDdbClient := dynamodb.New(sess)
+
+	var myKsis = kinesis.New(session.Must(session.NewSession(
+		aws.NewConfig().
+			WithEndpoint(*kinesisEndpoint).
+			WithRegion(*awsRegion).
+			WithLogLevel(3),
+	)))
+
+	// ddb persitance
+	ddb, err := storage.New(*app, *table, storage.WithDynamoClient(myDdbClient), storage.WithRetryer(&MyRetryer{}))
+	if err != nil {
+		log.Log("checkpoint error: %v", err)
+	}
+
+	// expvar counter
+	var counter = expvar.NewMap("counters")
+
+	// consumer
+	c, err := consumer.New(
+		*stream,
+		consumer.WithStore(ddb),
+		consumer.WithLogger(log),
+		consumer.WithCounter(counter),
+		consumer.WithClient(myKsis),
+	)
+	if err != nil {
+		log.Log("consumer error: %v", err)
+	}
+
+	// use cancel func to signal shutdown
+	ctx, cancel := context.WithCancel(context.Background())
+
+	// trap SIGINT, wait to trigger shutdown
+	signals := make(chan os.Signal, 1)
+	signal.Notify(signals, os.Interrupt)
+
+	go func() {
+		<-signals
+		cancel()
+	}()
+
+	// scan stream
+	err = c.Scan(ctx, func(r *consumer.Record) error {
+		fmt.Println(string(r.Data))
+		return nil // continue scanning
+	})
+	if err != nil {
+		log.Log("scan error: %v", err)
+	}
+
+	if err := ddb.Shutdown(); err != nil {
+		log.Log("storage shutdown error: %v", err)
+	}
+}
+
+// MyRetryer used for storage
+type MyRetryer struct {
+	storage.Retryer
+}
+
+// ShouldRetry implements custom logic for when errors should retry
+func (r *MyRetryer) ShouldRetry(err error) bool {
+	if awsErr, ok := err.(awserr.Error); ok {
+		switch awsErr.Code() {
+		case dynamodb.ErrCodeProvisionedThroughputExceededException, dynamodb.ErrCodeLimitExceededException:
+			return true
+		default:
+			return false
+		}
+	}
+	return false
+}

cmd/consumer-mysql/main.go

@@ -9,10 +9,9 @@ import (
 	"os"
 	"os/signal"
 
-	"github.com/aws/aws-sdk-go-v2/aws"
+	"github.com/aws/aws-sdk-go/aws"
-	"github.com/aws/aws-sdk-go-v2/config"
+	"github.com/aws/aws-sdk-go/aws/session"
-	"github.com/aws/aws-sdk-go-v2/credentials"
+	"github.com/aws/aws-sdk-go/service/kinesis"
-	"github.com/aws/aws-sdk-go-v2/service/kinesis"
 	consumer "github.com/harlow/kinesis-consumer"
 	store "github.com/harlow/kinesis-consumer/store/mysql"
 )
@@ -36,25 +35,13 @@ func main() {
 
 	var counter = expvar.NewMap("counters")
 
-	resolver := aws.EndpointResolverFunc(func(service, region string) (aws.Endpoint, error) {
-		return aws.Endpoint{
-			PartitionID:   "aws",
-			URL:           *kinesisEndpoint,
-			SigningRegion: *awsRegion,
-		}, nil
-	})
-
 	// client
-	cfg, err := config.LoadDefaultConfig(
+	cfg := aws.NewConfig().
-		context.TODO(),
+		WithEndpoint(*kinesisEndpoint).
-		config.WithRegion(*awsRegion),
+		WithRegion(*awsRegion).
-		config.WithEndpointResolver(resolver),
+		WithLogLevel(3)
-		config.WithCredentialsProvider(credentials.NewStaticCredentialsProvider("user", "pass", "token")),
+
-	)
+	var client = kinesis.New(session.Must(session.NewSession(cfg)))
-	if err != nil {
-		log.Fatalf("unable to load SDK config, %v", err)
-	}
-	var client = kinesis.NewFromConfig(cfg)
 
 	// consumer
 	c, err := consumer.New(

cmd/consumer-postgres/main.go

@@ -9,10 +9,9 @@ import (
 	"os"
 	"os/signal"
 
-	"github.com/aws/aws-sdk-go-v2/aws"
+	"github.com/aws/aws-sdk-go/aws"
-	"github.com/aws/aws-sdk-go-v2/config"
+	"github.com/aws/aws-sdk-go/aws/session"
-	"github.com/aws/aws-sdk-go-v2/credentials"
+	"github.com/aws/aws-sdk-go/service/kinesis"
-	"github.com/aws/aws-sdk-go-v2/service/kinesis"
 	consumer "github.com/harlow/kinesis-consumer"
 	store "github.com/harlow/kinesis-consumer/store/postgres"
 )
@@ -36,25 +35,13 @@ func main() {
 
 	var counter = expvar.NewMap("counters")
 
-	resolver := aws.EndpointResolverFunc(func(service, region string) (aws.Endpoint, error) {
-		return aws.Endpoint{
-			PartitionID:   "aws",
-			URL:           *kinesisEndpoint,
-			SigningRegion: *awsRegion,
-		}, nil
-	})
-
 	// client
-	cfg, err := config.LoadDefaultConfig(
+	cfg := aws.NewConfig().
-		context.TODO(),
+		WithEndpoint(*kinesisEndpoint).
-		config.WithRegion(*awsRegion),
+		WithRegion(*awsRegion).
-		config.WithEndpointResolver(resolver),
+		WithLogLevel(3)
-		config.WithCredentialsProvider(credentials.NewStaticCredentialsProvider("user", "pass", "token")),
+
-	)
+	var client = kinesis.New(session.Must(session.NewSession(cfg)))
-	if err != nil {
-		log.Fatalf("unable to load SDK config, %v", err)
-	}
-	var client = kinesis.NewFromConfig(cfg)
 
 	// consumer
 	c, err := consumer.New(

cmd/consumer-redis/main.go

@@ -8,10 +8,9 @@ import (
 	"os"
 	"os/signal"
 
-	"github.com/aws/aws-sdk-go-v2/aws"
+	"github.com/aws/aws-sdk-go/aws"
-	"github.com/aws/aws-sdk-go-v2/config"
+	"github.com/aws/aws-sdk-go/aws/session"
-	"github.com/aws/aws-sdk-go-v2/credentials"
+	"github.com/aws/aws-sdk-go/service/kinesis"
-	"github.com/aws/aws-sdk-go-v2/service/kinesis"
 	consumer "github.com/harlow/kinesis-consumer"
 	store "github.com/harlow/kinesis-consumer/store/redis"
 )
@@ -46,25 +45,13 @@ func main() {
 		logger: log.New(os.Stdout, "consumer-example: ", log.LstdFlags),
 	}
 
-	resolver := aws.EndpointResolverFunc(func(service, region string) (aws.Endpoint, error) {
-		return aws.Endpoint{
-			PartitionID:   "aws",
-			URL:           *kinesisEndpoint,
-			SigningRegion: *awsRegion,
-		}, nil
-	})
-
 	// client
-	cfg, err := config.LoadDefaultConfig(
+	cfg := aws.NewConfig().
-		context.TODO(),
+		WithEndpoint(*kinesisEndpoint).
-		config.WithRegion(*awsRegion),
+		WithRegion(*awsRegion).
-		config.WithEndpointResolver(resolver),
+		WithLogLevel(3)
-		config.WithCredentialsProvider(credentials.NewStaticCredentialsProvider("user", "pass", "token")),
+
-	)
+	var client = kinesis.New(session.Must(session.NewSession(cfg)))
-	if err != nil {
-		log.Fatalf("unable to load SDK config, %v", err)
-	}
-	var client = kinesis.NewFromConfig(cfg)
 
 	// consumer
 	c, err := consumer.New(

cmd/consumer/main.go

@@ -9,10 +9,9 @@ import (
 	"os/signal"
 	"syscall"
 
-	"github.com/aws/aws-sdk-go-v2/aws"
+	"github.com/aws/aws-sdk-go/aws"
-	"github.com/aws/aws-sdk-go-v2/config"
+	"github.com/aws/aws-sdk-go/aws/session"
-	"github.com/aws/aws-sdk-go-v2/credentials"
+	"github.com/aws/aws-sdk-go/service/kinesis"
-	"github.com/aws/aws-sdk-go-v2/service/kinesis"
 	consumer "github.com/harlow/kinesis-consumer"
 )
 
@@ -34,25 +33,12 @@ func main() {
 	)
 	flag.Parse()
 
-	resolver := aws.EndpointResolverFunc(func(service, region string) (aws.Endpoint, error) {
-		return aws.Endpoint{
-			PartitionID:   "aws",
-			URL:           *kinesisEndpoint,
-			SigningRegion: *awsRegion,
-		}, nil
-	})
-
 	// client
-	cfg, err := config.LoadDefaultConfig(
+	var client = kinesis.New(session.Must(session.NewSession(
-		context.TODO(),
+		aws.NewConfig().
-		config.WithRegion(*awsRegion),
+			WithEndpoint(*kinesisEndpoint).
-		config.WithEndpointResolver(resolver),
+			WithRegion(*awsRegion),
-		config.WithCredentialsProvider(credentials.NewStaticCredentialsProvider("user", "pass", "token")),
+	)))
-	)
-	if err != nil {
-		log.Fatalf("unable to load SDK config, %v", err)
-	}
-	var client = kinesis.NewFromConfig(cfg)
 
 	// consumer
 	c, err := consumer.New(

cmd/producer/main.go

@@ -0,0 +1,97 @@
+package main
+
+import (
+	"bufio"
+	"flag"
+	"fmt"
+	"log"
+	"os"
+	"time"
+
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/aws/session"
+	"github.com/aws/aws-sdk-go/service/kinesis"
+)
+
+func main() {
+	var (
+		streamName      = flag.String("stream", "", "Stream name")
+		kinesisEndpoint = flag.String("endpoint", "http://localhost:4567", "Kinesis endpoint")
+		awsRegion       = flag.String("region", "us-west-2", "AWS Region")
+	)
+	flag.Parse()
+
+	var records []*kinesis.PutRecordsRequestEntry
+
+	var client = kinesis.New(session.Must(session.NewSession(
+		aws.NewConfig().
+			WithEndpoint(*kinesisEndpoint).
+			WithRegion(*awsRegion).
+			WithLogLevel(3),
+	)))
+
+	// create stream if doesn't exist
+	if err := createStream(client, streamName); err != nil {
+		log.Fatalf("create stream error: %v", err)
+	}
+
+	// loop over file data
+	b := bufio.NewScanner(os.Stdin)
+
+	for b.Scan() {
+		records = append(records, &kinesis.PutRecordsRequestEntry{
+			Data:         b.Bytes(),
+			PartitionKey: aws.String(time.Now().Format(time.RFC3339Nano)),
+		})
+
+		if len(records) > 250 {
+			putRecords(client, streamName, records)
+			records = nil
+		}
+	}
+
+	if len(records) > 0 {
+		putRecords(client, streamName, records)
+	}
+}
+
+func createStream(client *kinesis.Kinesis, streamName *string) error {
+	resp, err := client.ListStreams(&kinesis.ListStreamsInput{})
+	if err != nil {
+		return fmt.Errorf("list streams error: %v", err)
+	}
+
+	for _, val := range resp.StreamNames {
+		if *streamName == *val {
+			return nil
+		}
+	}
+
+	_, err = client.CreateStream(
+		&kinesis.CreateStreamInput{
+			StreamName: streamName,
+			ShardCount: aws.Int64(2),
+		},
+	)
+	if err != nil {
+		return err
+	}
+
+	return client.WaitUntilStreamExists(
+		&kinesis.DescribeStreamInput{
+			StreamName: streamName,
+		},
+	)
+}
+
+func putRecords(client *kinesis.Kinesis, streamName *string, records []*kinesis.PutRecordsRequestEntry) {
+	_, err := client.PutRecords(&kinesis.PutRecordsInput{
+		StreamName: streamName,
+		Records:    records,
+	})
+	if err != nil {
+		log.Fatalf("error putting records: %v", err)
+	}
+
+	fmt.Print(".")
+}

consumer.go

@@ -4,22 +4,23 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"io"
+	"io/ioutil"
 	"log"
 	"sync"
 	"time"
 
-	"github.com/aws/aws-sdk-go-v2/aws"
+	"github.com/aws/aws-sdk-go/aws"
-	"github.com/aws/aws-sdk-go-v2/config"
+	"github.com/aws/aws-sdk-go/aws/awserr"
-	"github.com/aws/aws-sdk-go-v2/service/kinesis"
+	"github.com/aws/aws-sdk-go/aws/session"
-	"github.com/aws/aws-sdk-go-v2/service/kinesis/types"
+	"github.com/aws/aws-sdk-go/service/kinesis"
-	"github.com/harlow/kinesis-consumer/internal/deaggregator"
+	"github.com/aws/aws-sdk-go/service/kinesis/kinesisiface"
+	"github.com/awslabs/kinesis-aggregation/go/deaggregator"
 )
 
 // Record wraps the record returned from the Kinesis library and
 // extends to include the shard id.
 type Record struct {
-	types.Record
+	*kinesis.Record
 	ShardID            string
 	MillisBehindLatest *int64
 }
@@ -34,11 +35,11 @@ func New(streamName string, opts ...Option) (*Consumer, error) {
 	// new consumer with noop storage, counter, and logger
 	c := &Consumer{
 		streamName:               streamName,
-		initialShardIteratorType: types.ShardIteratorTypeLatest,
+		initialShardIteratorType: kinesis.ShardIteratorTypeLatest,
 		store:                    &noopStore{},
 		counter:                  &noopCounter{},
 		logger: &noopLogger{
-			logger: log.New(io.Discard, "", log.LstdFlags),
+			logger: log.New(ioutil.Discard, "", log.LstdFlags),
 		},
 		scanInterval: 250 * time.Millisecond,
 		maxRecords:   10000,
@@ -51,11 +52,11 @@ func New(streamName string, opts ...Option) (*Consumer, error) {
 
 	// default client
 	if c.client == nil {
-		cfg, err := config.LoadDefaultConfig(context.TODO())
+		newSession, err := session.NewSession(aws.NewConfig())
 		if err != nil {
-			log.Fatalf("unable to load SDK config, %v", err)
+			return nil, err
 		}
-		c.client = kinesis.NewFromConfig(cfg)
+		c.client = kinesis.New(newSession)
 	}
 
 	// default group consumes all shards
@@ -69,9 +70,9 @@ func New(streamName string, opts ...Option) (*Consumer, error) {
 // Consumer wraps the interaction with the Kinesis stream
 type Consumer struct {
 	streamName               string
-	initialShardIteratorType types.ShardIteratorType
+	initialShardIteratorType string
 	initialTimestamp         *time.Time
-	client                   kinesisClient
+	client                   kinesisiface.KinesisAPI
 	counter                  Counter
 	group                    Group
 	logger                   Logger
@@ -90,7 +91,7 @@ type Consumer struct {
 type ScanFunc func(*Record) error
 
 // ErrSkipCheckpoint is used as a return value from ScanFunc to indicate that
-// the current checkpoint should be skipped. It is not returned
+// the current checkpoint should be skipped skipped. It is not returned
 // as an error by any function.
 var ErrSkipCheckpoint = errors.New("skip checkpoint")
 
@@ -102,60 +103,40 @@ func (c *Consumer) Scan(ctx context.Context, fn ScanFunc) error {
 	defer cancel()
 
 	var (
-		errC   = make(chan error, 1)
+		errc   = make(chan error, 1)
-		shardC = make(chan types.Shard, 1)
+		shardc = make(chan *kinesis.Shard, 1)
 	)
 
 	go func() {
-		err := c.group.Start(ctx, shardC)
+		c.group.Start(ctx, shardc)
-		if err != nil {
-			errC <- fmt.Errorf("error starting scan: %w", err)
-			cancel()
-		}
 		<-ctx.Done()
-		close(shardC)
+		close(shardc)
 	}()
 
 	wg := new(sync.WaitGroup)
 	// process each of the shards
-	s := newShardsInProcess()
+	for shard := range shardc {
-	for shard := range shardC {
-		shardId := aws.ToString(shard.ShardId)
-		if s.doesShardExist(shardId) {
-			// safetynet: if shard already in process by another goroutine, just skipping the request
-			continue
-		}
 		wg.Add(1)
 		go func(shardID string) {
-			s.addShard(shardID)
-			defer func() {
-				s.deleteShard(shardID)
-			}()
 			defer wg.Done()
-			var err error
+			if err := c.ScanShard(ctx, shardID, fn); err != nil {
-			if err = c.ScanShard(ctx, shardID, fn); err != nil {
-				err = fmt.Errorf("shard %s error: %w", shardID, err)
-			} else if closeable, ok := c.group.(CloseableGroup); !ok {
-				// group doesn't allow closure, skip calling CloseShard
-			} else if err = closeable.CloseShard(ctx, shardID); err != nil {
-				err = fmt.Errorf("shard closed CloseableGroup error: %w", err)
-			}
-			if err != nil {
 				select {
-				case errC <- fmt.Errorf("shard %s error: %w", shardID, err):
+				case errc <- fmt.Errorf("shard %s error: %w", shardID, err):
+					// first error to occur
 					cancel()
 				default:
+					// error has already occurred
 				}
 			}
-		}(shardId)
+		}(aws.StringValue(shard.ShardId))
 	}
 
 	go func() {
 		wg.Wait()
-		close(errC)
+		close(errc)
 	}()
 
-	return <-errC
+	return <-errc
 }
 
 // ScanShard loops over records on a specific shard, calls the callback func
@@ -177,22 +158,23 @@ func (c *Consumer) ScanShard(ctx context.Context, shardID string, fn ScanFunc) e
 	defer func() {
 		c.logger.Log("[CONSUMER] stop scan:", shardID)
 	}()
-
 	scanTicker := time.NewTicker(c.scanInterval)
 	defer scanTicker.Stop()
 
 	for {
-		resp, err := c.client.GetRecords(ctx, &kinesis.GetRecordsInput{
+		resp, err := c.client.GetRecords(&kinesis.GetRecordsInput{
-			Limit:         aws.Int32(int32(c.maxRecords)),
+			Limit:         aws.Int64(c.maxRecords),
 			ShardIterator: shardIterator,
 		})
 
-		// attempt to recover from GetRecords error
+		// attempt to recover from GetRecords error when expired iterator
 		if err != nil {
 			c.logger.Log("[CONSUMER] get records error:", err.Error())
 
-			if !isRetriableError(err) {
+			if awserr, ok := err.(awserr.Error); ok {
-				return fmt.Errorf("get records error: %v", err.Error())
+				if _, ok := retriableErrors[awserr.Code()]; !ok {
+					return fmt.Errorf("get records error: %v", awserr.Message())
+				}
 			}
 
 			shardIterator, err = c.getShardIterator(ctx, c.streamName, shardID, lastSeqNum)
@@ -201,30 +183,30 @@ func (c *Consumer) ScanShard(ctx context.Context, shardID string, fn ScanFunc) e
 			}
 		} else {
 			// loop over records, call callback func
-			var records []types.Record
+			var records []*kinesis.Record
-
+			var err error
-			// deaggregate records
 			if c.isAggregated {
-				records, err = deaggregateRecords(resp.Records)
+				records, err = deaggregator.DeaggregateRecords(resp.Records)
 				if err != nil {
 					return err
 				}
 			} else {
 				records = resp.Records
 			}
-
 			for _, r := range records {
 				select {
 				case <-ctx.Done():
 					return nil
 				default:
 					err := fn(&Record{r, shardID, resp.MillisBehindLatest})
-					if err != nil && !errors.Is(err, ErrSkipCheckpoint) {
+					if err != nil && err != ErrSkipCheckpoint {
 						return err
 					}
 
-					if err := c.group.SetCheckpoint(c.streamName, shardID, *r.SequenceNumber); err != nil {
+					if err != ErrSkipCheckpoint {
-						return err
+						if err := c.group.SetCheckpoint(c.streamName, shardID, *r.SequenceNumber); err != nil {
+							return err
+						}
 					}
 
 					c.counter.Add("records", 1)
@@ -234,9 +216,9 @@ func (c *Consumer) ScanShard(ctx context.Context, shardID string, fn ScanFunc) e
 
 			if isShardClosed(resp.NextShardIterator, shardIterator) {
 				c.logger.Log("[CONSUMER] shard closed:", shardID)
-
 				if c.shardClosedHandler != nil {
-					if err := c.shardClosedHandler(c.streamName, shardID); err != nil {
+					err := c.shardClosedHandler(c.streamName, shardID)
+					if err != nil {
 						return fmt.Errorf("shard closed handler error: %w", err)
 					}
 				}
@@ -256,23 +238,14 @@ func (c *Consumer) ScanShard(ctx context.Context, shardID string, fn ScanFunc) e
 	}
 }
 
-// temporary conversion func of []types.Record -> DeaggregateRecords([]*types.Record) -> []types.Record
+var retriableErrors = map[string]struct{}{
-func deaggregateRecords(in []types.Record) ([]types.Record, error) {
+	kinesis.ErrCodeExpiredIteratorException:               struct{}{},
-	var recs []*types.Record
+	kinesis.ErrCodeProvisionedThroughputExceededException: struct{}{},
-	for _, rec := range in {
+	kinesis.ErrCodeInternalFailureException:               struct{}{},
-		recs = append(recs, &rec)
+}
-	}
 
-	deagg, err := deaggregator.DeaggregateRecords(recs)
+func isShardClosed(nextShardIterator, currentShardIterator *string) bool {
-	if err != nil {
+	return nextShardIterator == nil || currentShardIterator == nextShardIterator
-		return nil, err
-	}
-
-	var out []types.Record
-	for _, rec := range deagg {
-		out = append(out, *rec)
-	}
-	return out, nil
 }
 
 func (c *Consumer) getShardIterator(ctx context.Context, streamName, shardID, seqNum string) (*string, error) {
@@ -282,53 +255,15 @@ func (c *Consumer) getShardIterator(ctx context.Context, streamName, shardID, se
 	}
 
 	if seqNum != "" {
-		params.ShardIteratorType = types.ShardIteratorTypeAfterSequenceNumber
+		params.ShardIteratorType = aws.String(kinesis.ShardIteratorTypeAfterSequenceNumber)
 		params.StartingSequenceNumber = aws.String(seqNum)
 	} else if c.initialTimestamp != nil {
-		params.ShardIteratorType = types.ShardIteratorTypeAtTimestamp
+		params.ShardIteratorType = aws.String(kinesis.ShardIteratorTypeAtTimestamp)
 		params.Timestamp = c.initialTimestamp
 	} else {
-		params.ShardIteratorType = c.initialShardIteratorType
+		params.ShardIteratorType = aws.String(c.initialShardIteratorType)
 	}
 
-	res, err := c.client.GetShardIterator(ctx, params)
+	res, err := c.client.GetShardIteratorWithContext(aws.Context(ctx), params)
-	if err != nil {
+	return res.ShardIterator, err
-		return nil, err
-	}
-	return res.ShardIterator, nil
-}
-
-func isRetriableError(err error) bool {
-	if oe := (*types.ExpiredIteratorException)(nil); errors.As(err, &oe) {
-		return true
-	}
-	if oe := (*types.ProvisionedThroughputExceededException)(nil); errors.As(err, &oe) {
-		return true
-	}
-	return false
-}
-
-func isShardClosed(nextShardIterator, currentShardIterator *string) bool {
-	return nextShardIterator == nil || currentShardIterator == nextShardIterator
-}
-
-type shards struct {
-	shardsInProcess sync.Map
-}
-
-func newShardsInProcess() *shards {
-	return &shards{}
-}
-
-func (s *shards) addShard(shardId string) {
-	s.shardsInProcess.Store(shardId, struct{}{})
-}
-
-func (s *shards) doesShardExist(shardId string) bool {
-	_, ok := s.shardsInProcess.Load(shardId)
-	return ok
-}
-
-func (s *shards) deleteShard(shardId string) {
-	s.shardsInProcess.Delete(shardId)
 }

consumer_test.go

@@ -2,21 +2,20 @@ package consumer
 
 import (
 	"context"
-	"errors"
 	"fmt"
-	"math/rand"
 	"sync"
 	"testing"
-	"time"
 
-	"github.com/aws/aws-sdk-go-v2/aws"
+	"github.com/aws/aws-sdk-go/aws"
-	"github.com/aws/aws-sdk-go-v2/service/kinesis"
+	"github.com/aws/aws-sdk-go/aws/awserr"
-	"github.com/aws/aws-sdk-go-v2/service/kinesis/types"
+	"github.com/aws/aws-sdk-go/aws/request"
+	"github.com/aws/aws-sdk-go/service/kinesis"
+	"github.com/aws/aws-sdk-go/service/kinesis/kinesisiface"
 
-	store "github.com/harlow/kinesis-consumer/store/memory"
+	"github.com/harlow/kinesis-consumer/store/memory"
 )
 
-var records = []types.Record{
+var records = []*kinesis.Record{
 	{
 		Data:           []byte("firstData"),
 		SequenceNumber: aws.String("firstSeqNum"),
@@ -27,15 +26,6 @@ var records = []types.Record{
 	},
 }
 
-// Implement logger to wrap testing.T.Log.
-type testLogger struct {
-	t *testing.T
-}
-
-func (t *testLogger) Log(args ...interface{}) {
-	t.t.Log(args...)
-}
-
 func TestNew(t *testing.T) {
 	if _, err := New("myStreamName"); err != nil {
 		t.Fatalf("new consumer error: %v", err)
@@ -44,20 +34,20 @@ func TestNew(t *testing.T) {
 
 func TestScan(t *testing.T) {
 	client := &kinesisClientMock{
-		getShardIteratorMock: func(ctx context.Context, params *kinesis.GetShardIteratorInput, optFns ...func(*kinesis.Options)) (*kinesis.GetShardIteratorOutput, error) {
+		getShardIteratorMock: func(input *kinesis.GetShardIteratorInput) (*kinesis.GetShardIteratorOutput, error) {
 			return &kinesis.GetShardIteratorOutput{
 				ShardIterator: aws.String("49578481031144599192696750682534686652010819674221576194"),
 			}, nil
 		},
-		getRecordsMock: func(ctx context.Context, params *kinesis.GetRecordsInput, optFns ...func(*kinesis.Options)) (*kinesis.GetRecordsOutput, error) {
+		getRecordsMock: func(input *kinesis.GetRecordsInput) (*kinesis.GetRecordsOutput, error) {
 			return &kinesis.GetRecordsOutput{
 				NextShardIterator: nil,
 				Records:           records,
 			}, nil
 		},
-		listShardsMock: func(ctx context.Context, params *kinesis.ListShardsInput, optFns ...func(*kinesis.Options)) (*kinesis.ListShardsOutput, error) {
+		listShardsMock: func(input *kinesis.ListShardsInput) (*kinesis.ListShardsOutput, error) {
 			return &kinesis.ListShardsOutput{
-				Shards: []types.Shard{
+				Shards: []*kinesis.Shard{
 					{ShardId: aws.String("myShard")},
 				},
 			}, nil
@@ -72,7 +62,6 @@ func TestScan(t *testing.T) {
 		WithClient(client),
 		WithCounter(ctr),
 		WithStore(cp),
-		WithLogger(&testLogger{t}),
 	)
 	if err != nil {
 		t.Fatalf("new consumer error: %v", err)
@@ -111,79 +100,14 @@ func TestScan(t *testing.T) {
 	}
 }
 
-func TestScan_ListShardsError(t *testing.T) {
-	mockError := errors.New("mock list shards error")
-	client := &kinesisClientMock{
-		listShardsMock: func(ctx context.Context, params *kinesis.ListShardsInput, optFns ...func(*kinesis.Options)) (*kinesis.ListShardsOutput, error) {
-			return nil, mockError
-		},
-	}
-
-	// use cancel func to signal shutdown
-	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
-
-	var res string
-	var fn = func(r *Record) error {
-		res += string(r.Data)
-		cancel() // simulate cancellation while processing first record
-		return nil
-	}
-
-	c, err := New("myStreamName", WithClient(client))
-	if err != nil {
-		t.Fatalf("new consumer error: %v", err)
-	}
-
-	err = c.Scan(ctx, fn)
-	if !errors.Is(err, mockError) {
-		t.Errorf("expected an error from listShards, but instead got %v", err)
-	}
-}
-
-func TestScan_GetShardIteratorError(t *testing.T) {
-	mockError := errors.New("mock get shard iterator error")
-	client := &kinesisClientMock{
-		listShardsMock: func(ctx context.Context, params *kinesis.ListShardsInput, optFns ...func(*kinesis.Options)) (*kinesis.ListShardsOutput, error) {
-			return &kinesis.ListShardsOutput{
-				Shards: []types.Shard{
-					{ShardId: aws.String("myShard")},
-				},
-			}, nil
-		},
-		getShardIteratorMock: func(ctx context.Context, params *kinesis.GetShardIteratorInput, optFns ...func(*kinesis.Options)) (*kinesis.GetShardIteratorOutput, error) {
-			return nil, mockError
-		},
-	}
-
-	// use cancel func to signal shutdown
-	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
-
-	var res string
-	var fn = func(r *Record) error {
-		res += string(r.Data)
-		cancel() // simulate cancellation while processing first record
-		return nil
-	}
-
-	c, err := New("myStreamName", WithClient(client))
-	if err != nil {
-		t.Fatalf("new consumer error: %v", err)
-	}
-
-	err = c.Scan(ctx, fn)
-	if !errors.Is(err, mockError) {
-		t.Errorf("expected an error from getShardIterator, but instead got %v", err)
-	}
-}
-
 func TestScanShard(t *testing.T) {
 	var client = &kinesisClientMock{
-		getShardIteratorMock: func(ctx context.Context, params *kinesis.GetShardIteratorInput, optFns ...func(*kinesis.Options)) (*kinesis.GetShardIteratorOutput, error) {
+		getShardIteratorMock: func(input *kinesis.GetShardIteratorInput) (*kinesis.GetShardIteratorOutput, error) {
 			return &kinesis.GetShardIteratorOutput{
 				ShardIterator: aws.String("49578481031144599192696750682534686652010819674221576194"),
 			}, nil
 		},
-		getRecordsMock: func(ctx context.Context, params *kinesis.GetRecordsInput, optFns ...func(*kinesis.Options)) (*kinesis.GetRecordsOutput, error) {
+		getRecordsMock: func(input *kinesis.GetRecordsInput) (*kinesis.GetRecordsOutput, error) {
 			return &kinesis.GetRecordsOutput{
 				NextShardIterator: nil,
 				Records:           records,
@@ -200,7 +124,6 @@ func TestScanShard(t *testing.T) {
 		WithClient(client),
 		WithCounter(ctr),
 		WithStore(cp),
-		WithLogger(&testLogger{t}),
 	)
 	if err != nil {
 		t.Fatalf("new consumer error: %v", err)
@@ -245,12 +168,12 @@ func TestScanShard(t *testing.T) {
 
 func TestScanShard_Cancellation(t *testing.T) {
 	var client = &kinesisClientMock{
-		getShardIteratorMock: func(ctx context.Context, params *kinesis.GetShardIteratorInput, optFns ...func(*kinesis.Options)) (*kinesis.GetShardIteratorOutput, error) {
+		getShardIteratorMock: func(input *kinesis.GetShardIteratorInput) (*kinesis.GetShardIteratorOutput, error) {
 			return &kinesis.GetShardIteratorOutput{
 				ShardIterator: aws.String("49578481031144599192696750682534686652010819674221576194"),
 			}, nil
 		},
-		getRecordsMock: func(ctx context.Context, params *kinesis.GetRecordsInput, optFns ...func(*kinesis.Options)) (*kinesis.GetRecordsOutput, error) {
+		getRecordsMock: func(input *kinesis.GetRecordsInput) (*kinesis.GetRecordsOutput, error) {
 			return &kinesis.GetRecordsOutput{
 				NextShardIterator: nil,
 				Records:           records,
@@ -285,12 +208,12 @@ func TestScanShard_Cancellation(t *testing.T) {
 
 func TestScanShard_SkipCheckpoint(t *testing.T) {
 	var client = &kinesisClientMock{
-		getShardIteratorMock: func(ctx context.Context, params *kinesis.GetShardIteratorInput, optFns ...func(*kinesis.Options)) (*kinesis.GetShardIteratorOutput, error) {
+		getShardIteratorMock: func(input *kinesis.GetShardIteratorInput) (*kinesis.GetShardIteratorOutput, error) {
 			return &kinesis.GetShardIteratorOutput{
 				ShardIterator: aws.String("49578481031144599192696750682534686652010819674221576194"),
 			}, nil
 		},
-		getRecordsMock: func(ctx context.Context, params *kinesis.GetRecordsInput, optFns ...func(*kinesis.Options)) (*kinesis.GetRecordsOutput, error) {
+		getRecordsMock: func(input *kinesis.GetRecordsInput) (*kinesis.GetRecordsOutput, error) {
 			return &kinesis.GetRecordsOutput{
 				NextShardIterator: nil,
 				Records:           records,
@@ -308,7 +231,7 @@ func TestScanShard_SkipCheckpoint(t *testing.T) {
 	var ctx, cancel = context.WithCancel(context.Background())
 
 	var fn = func(r *Record) error {
-		if aws.ToString(r.SequenceNumber) == "lastSeqNum" {
+		if aws.StringValue(r.SequenceNumber) == "lastSeqNum" {
 			cancel()
 			return ErrSkipCheckpoint
 		}
@@ -329,15 +252,15 @@ func TestScanShard_SkipCheckpoint(t *testing.T) {
 
 func TestScanShard_ShardIsClosed(t *testing.T) {
 	var client = &kinesisClientMock{
-		getShardIteratorMock: func(ctx context.Context, params *kinesis.GetShardIteratorInput, optFns ...func(*kinesis.Options)) (*kinesis.GetShardIteratorOutput, error) {
+		getShardIteratorMock: func(input *kinesis.GetShardIteratorInput) (*kinesis.GetShardIteratorOutput, error) {
 			return &kinesis.GetShardIteratorOutput{
 				ShardIterator: aws.String("49578481031144599192696750682534686652010819674221576194"),
 			}, nil
 		},
-		getRecordsMock: func(ctx context.Context, params *kinesis.GetRecordsInput, optFns ...func(*kinesis.Options)) (*kinesis.GetRecordsOutput, error) {
+		getRecordsMock: func(input *kinesis.GetRecordsInput) (*kinesis.GetRecordsOutput, error) {
 			return &kinesis.GetRecordsOutput{
 				NextShardIterator: nil,
-				Records:           make([]types.Record, 0),
+				Records:           make([]*kinesis.Record, 0),
 			}, nil
 		},
 	}
@@ -359,15 +282,15 @@ func TestScanShard_ShardIsClosed(t *testing.T) {
 
 func TestScanShard_ShardIsClosed_WithShardClosedHandler(t *testing.T) {
 	var client = &kinesisClientMock{
-		getShardIteratorMock: func(ctx context.Context, params *kinesis.GetShardIteratorInput, optFns ...func(*kinesis.Options)) (*kinesis.GetShardIteratorOutput, error) {
+		getShardIteratorMock: func(input *kinesis.GetShardIteratorInput) (*kinesis.GetShardIteratorOutput, error) {
 			return &kinesis.GetShardIteratorOutput{
 				ShardIterator: aws.String("49578481031144599192696750682534686652010819674221576194"),
 			}, nil
 		},
-		getRecordsMock: func(ctx context.Context, params *kinesis.GetRecordsInput, optFns ...func(*kinesis.Options)) (*kinesis.GetRecordsOutput, error) {
+		getRecordsMock: func(input *kinesis.GetRecordsInput) (*kinesis.GetRecordsOutput, error) {
 			return &kinesis.GetRecordsOutput{
 				NextShardIterator: nil,
-				Records:           make([]types.Record, 0),
+				Records:           make([]*kinesis.Record, 0),
 			}, nil
 		},
 	}
@@ -380,8 +303,7 @@ func TestScanShard_ShardIsClosed_WithShardClosedHandler(t *testing.T) {
 		WithClient(client),
 		WithShardClosedHandler(func(streamName, shardID string) error {
 			return fmt.Errorf("closed shard error")
-		}),
+		}))
-		WithLogger(&testLogger{t}))
 	if err != nil {
 		t.Fatalf("new consumer error: %v", err)
 	}
@@ -397,17 +319,20 @@ func TestScanShard_ShardIsClosed_WithShardClosedHandler(t *testing.T) {
 
 func TestScanShard_GetRecordsError(t *testing.T) {
 	var client = &kinesisClientMock{
-		getShardIteratorMock: func(ctx context.Context, params *kinesis.GetShardIteratorInput, optFns ...func(*kinesis.Options)) (*kinesis.GetShardIteratorOutput, error) {
+		getShardIteratorMock: func(input *kinesis.GetShardIteratorInput) (*kinesis.GetShardIteratorOutput, error) {
 			return &kinesis.GetShardIteratorOutput{
 				ShardIterator: aws.String("49578481031144599192696750682534686652010819674221576194"),
 			}, nil
 		},
-		getRecordsMock: func(ctx context.Context, params *kinesis.GetRecordsInput, optFns ...func(*kinesis.Options)) (*kinesis.GetRecordsOutput, error) {
+		getRecordsMock: func(input *kinesis.GetRecordsInput) (*kinesis.GetRecordsOutput, error) {
 			return &kinesis.GetRecordsOutput{
 					NextShardIterator: nil,
 					Records:           nil,
-				},
+				}, awserr.New(
-				&types.InvalidArgumentException{Message: aws.String("aws error message")}
+					kinesis.ErrCodeInvalidArgumentException,
+					"aws error message",
+					fmt.Errorf("error message"),
+				)
 		},
 	}
 
@@ -415,34 +340,38 @@ func TestScanShard_GetRecordsError(t *testing.T) {
 		return nil
 	}
 
-	c, err := New("myStreamName", WithClient(client), WithLogger(&testLogger{t}))
+	c, err := New("myStreamName", WithClient(client))
 	if err != nil {
 		t.Fatalf("new consumer error: %v", err)
 	}
 
 	err = c.ScanShard(context.Background(), "myShard", fn)
-	if err.Error() != "get records error: InvalidArgumentException: aws error message" {
+	if err.Error() != "get records error: aws error message" {
 		t.Fatalf("unexpected error: %v", err)
 	}
 }
 
 type kinesisClientMock struct {
-	kinesis.Client
+	kinesisiface.KinesisAPI
-	getShardIteratorMock func(ctx context.Context, params *kinesis.GetShardIteratorInput, optFns ...func(*kinesis.Options)) (*kinesis.GetShardIteratorOutput, error)
+	getShardIteratorMock func(*kinesis.GetShardIteratorInput) (*kinesis.GetShardIteratorOutput, error)
-	getRecordsMock       func(ctx context.Context, params *kinesis.GetRecordsInput, optFns ...func(*kinesis.Options)) (*kinesis.GetRecordsOutput, error)
+	getRecordsMock       func(*kinesis.GetRecordsInput) (*kinesis.GetRecordsOutput, error)
-	listShardsMock       func(ctx context.Context, params *kinesis.ListShardsInput, optFns ...func(*kinesis.Options)) (*kinesis.ListShardsOutput, error)
+	listShardsMock       func(*kinesis.ListShardsInput) (*kinesis.ListShardsOutput, error)
 }
 
-func (c *kinesisClientMock) ListShards(ctx context.Context, params *kinesis.ListShardsInput, optFns ...func(*kinesis.Options)) (*kinesis.ListShardsOutput, error) {
+func (c *kinesisClientMock) ListShards(in *kinesis.ListShardsInput) (*kinesis.ListShardsOutput, error) {
-	return c.listShardsMock(ctx, params)
+	return c.listShardsMock(in)
 }
 
-func (c *kinesisClientMock) GetRecords(ctx context.Context, params *kinesis.GetRecordsInput, optFns ...func(*kinesis.Options)) (*kinesis.GetRecordsOutput, error) {
+func (c *kinesisClientMock) GetRecords(in *kinesis.GetRecordsInput) (*kinesis.GetRecordsOutput, error) {
-	return c.getRecordsMock(ctx, params)
+	return c.getRecordsMock(in)
 }
 
-func (c *kinesisClientMock) GetShardIterator(ctx context.Context, params *kinesis.GetShardIteratorInput, optFns ...func(*kinesis.Options)) (*kinesis.GetShardIteratorOutput, error) {
+func (c *kinesisClientMock) GetShardIterator(in *kinesis.GetShardIteratorInput) (*kinesis.GetShardIteratorOutput, error) {
-	return c.getShardIteratorMock(ctx, params)
+	return c.getShardIteratorMock(in)
+}
+
+func (c *kinesisClientMock) GetShardIteratorWithContext(ctx aws.Context, in *kinesis.GetShardIteratorInput, options ...request.Option) (*kinesis.GetShardIteratorOutput, error) {
+	return c.getShardIteratorMock(in)
 }
 
 // implementation of counter
@@ -464,201 +393,3 @@ func (fc *fakeCounter) Add(streamName string, count int64) {
 
 	fc.counter += count
 }
-
-func TestScan_PreviousParentsBeforeTrimHorizon(t *testing.T) {
-	client := &kinesisClientMock{
-		getShardIteratorMock: func(ctx context.Context, params *kinesis.GetShardIteratorInput, optFns ...func(*kinesis.Options)) (*kinesis.GetShardIteratorOutput, error) {
-			return &kinesis.GetShardIteratorOutput{
-				ShardIterator: aws.String("49578481031144599192696750682534686652010819674221576194"),
-			}, nil
-		},
-		getRecordsMock: func(ctx context.Context, params *kinesis.GetRecordsInput, optFns ...func(*kinesis.Options)) (*kinesis.GetRecordsOutput, error) {
-			return &kinesis.GetRecordsOutput{
-				NextShardIterator: nil,
-				Records:           records,
-			}, nil
-		},
-		listShardsMock: func(ctx context.Context, params *kinesis.ListShardsInput, optFns ...func(*kinesis.Options)) (*kinesis.ListShardsOutput, error) {
-			return &kinesis.ListShardsOutput{
-				Shards: []types.Shard{
-					{
-						ShardId:               aws.String("myShard"),
-						ParentShardId:         aws.String("myOldParent"),
-						AdjacentParentShardId: aws.String("myOldAdjacentParent"),
-					},
-				},
-			}, nil
-		},
-	}
-	var (
-		cp  = store.New()
-		ctr = &fakeCounter{}
-	)
-
-	c, err := New("myStreamName",
-		WithClient(client),
-		WithCounter(ctr),
-		WithStore(cp),
-		WithLogger(&testLogger{t}),
-	)
-	if err != nil {
-		t.Fatalf("new consumer error: %v", err)
-	}
-
-	var (
-		ctx, cancel = context.WithCancel(context.Background())
-		res         string
-	)
-
-	var fn = func(r *Record) error {
-		res += string(r.Data)
-
-		if string(r.Data) == "lastData" {
-			cancel()
-		}
-
-		return nil
-	}
-
-	if err := c.Scan(ctx, fn); err != nil {
-		t.Errorf("scan returned unexpected error %v", err)
-	}
-
-	if res != "firstDatalastData" {
-		t.Errorf("callback error expected %s, got %s", "firstDatalastData", res)
-	}
-
-	if val := ctr.Get(); val != 2 {
-		t.Errorf("counter error expected %d, got %d", 2, val)
-	}
-
-	val, err := cp.GetCheckpoint("myStreamName", "myShard")
-	if err != nil && val != "lastSeqNum" {
-		t.Errorf("checkout error expected %s, got %s", "lastSeqNum", val)
-	}
-}
-
-func TestScan_ParentChildOrdering(t *testing.T) {
-	// We create a set of shards where shard1 split into (shard2,shard3), then (shard2,shard3) merged into shard4.
-	client := &kinesisClientMock{
-		getShardIteratorMock: func(ctx context.Context, params *kinesis.GetShardIteratorInput, optFns ...func(*kinesis.Options)) (*kinesis.GetShardIteratorOutput, error) {
-			return &kinesis.GetShardIteratorOutput{
-				ShardIterator: aws.String(*params.ShardId + "iter"),
-			}, nil
-		},
-		getRecordsMock: func(ctx context.Context, params *kinesis.GetRecordsInput, optFns ...func(*kinesis.Options)) (*kinesis.GetRecordsOutput, error) {
-			switch *params.ShardIterator {
-			case "shard1iter":
-				return &kinesis.GetRecordsOutput{
-					NextShardIterator: nil,
-					Records: []types.Record{
-						{
-							Data:           []byte("shard1data"),
-							SequenceNumber: aws.String("shard1num"),
-						},
-					},
-				}, nil
-			case "shard2iter":
-				return &kinesis.GetRecordsOutput{
-					NextShardIterator: nil,
-					Records:           []types.Record{},
-				}, nil
-			case "shard3iter":
-				return &kinesis.GetRecordsOutput{
-					NextShardIterator: nil,
-					Records: []types.Record{
-						{
-							Data:           []byte("shard3data"),
-							SequenceNumber: aws.String("shard3num"),
-						},
-					},
-				}, nil
-			case "shard4iter":
-				return &kinesis.GetRecordsOutput{
-					NextShardIterator: nil,
-					Records: []types.Record{
-						{
-							Data:           []byte("shard4data"),
-							SequenceNumber: aws.String("shard4num"),
-						},
-					},
-				}, nil
-			default:
-				panic("got unexpected iterator")
-			}
-		},
-		listShardsMock: func(ctx context.Context, params *kinesis.ListShardsInput, optFns ...func(*kinesis.Options)) (*kinesis.ListShardsOutput, error) {
-			// Intentionally misorder these to test resiliance to ordering issues from ListShards.
-			return &kinesis.ListShardsOutput{
-				Shards: []types.Shard{
-					{
-						ShardId:       aws.String("shard3"),
-						ParentShardId: aws.String("shard1"),
-					},
-					{
-						ShardId:       aws.String("shard1"),
-						ParentShardId: aws.String("shard0"), // not otherwise referenced, parent ordering should ignore this
-					},
-					{
-						ShardId:               aws.String("shard4"),
-						ParentShardId:         aws.String("shard2"),
-						AdjacentParentShardId: aws.String("shard3"),
-					},
-					{
-						ShardId:       aws.String("shard2"),
-						ParentShardId: aws.String("shard1"),
-					},
-				},
-			}, nil
-		},
-	}
-	var (
-		cp  = store.New()
-		ctr = &fakeCounter{}
-	)
-
-	c, err := New("myStreamName",
-		WithClient(client),
-		WithCounter(ctr),
-		WithStore(cp),
-		WithLogger(&testLogger{t}),
-	)
-	if err != nil {
-		t.Fatalf("new consumer error: %v", err)
-	}
-
-	var (
-		ctx, cancel = context.WithCancel(context.Background())
-		res         string
-	)
-
-	rand.Seed(time.Now().UnixNano())
-
-	var fn = func(r *Record) error {
-		res += string(r.Data)
-		time.Sleep(time.Duration(rand.Int()%100) * time.Millisecond)
-
-		if string(r.Data) == "shard4data" {
-			cancel()
-		}
-
-		return nil
-	}
-
-	if err := c.Scan(ctx, fn); err != nil {
-		t.Errorf("scan returned unexpected error %v", err)
-	}
-
-	if want := "shard1datashard3datashard4data"; res != want {
-		t.Errorf("callback error expected %s, got %s", want, res)
-	}
-
-	if val := ctr.Get(); val != 3 {
-		t.Errorf("counter error expected %d, got %d", 2, val)
-	}
-
-	val, err := cp.GetCheckpoint("myStreamName", "shard4data")
-	if err != nil && val != "shard4num" {
-		t.Errorf("checkout error expected %s, got %s", "shard4num", val)
-	}
-}

examples/consumer-dynamodb/main.go

@@ -1,207 +0,0 @@
-package main
-
-import (
-	"context"
-	"expvar"
-	"flag"
-	"fmt"
-	"log"
-	"net"
-	"net/http"
-	"os"
-	"os/signal"
-	"time"
-
-	alog "github.com/apex/log"
-	"github.com/apex/log/handlers/text"
-	"github.com/aws/aws-sdk-go-v2/aws"
-	"github.com/aws/aws-sdk-go-v2/config"
-	"github.com/aws/aws-sdk-go-v2/credentials"
-	"github.com/aws/aws-sdk-go-v2/service/dynamodb"
-	ddbtypes "github.com/aws/aws-sdk-go-v2/service/dynamodb/types"
-	"github.com/aws/aws-sdk-go-v2/service/kinesis"
-	"github.com/aws/aws-sdk-go-v2/service/kinesis/types"
-	consumer "github.com/harlow/kinesis-consumer"
-	storage "github.com/harlow/kinesis-consumer/store/ddb"
-)
-
-// kick off a server for exposing scan metrics
-func init() {
-	sock, err := net.Listen("tcp", "localhost:8080")
-	if err != nil {
-		log.Printf("net listen error: %v", err)
-	}
-	go func() {
-		fmt.Println("Metrics available at http://localhost:8080/debug/vars")
-		http.Serve(sock, nil)
-	}()
-}
-
-// A myLogger provides a minimalistic logger satisfying the Logger interface.
-type myLogger struct {
-	logger alog.Logger
-}
-
-// Log logs the parameters to the stdlib logger. See log.Println.
-func (l *myLogger) Log(args ...interface{}) {
-	l.logger.Infof("producer: %v", args...)
-}
-
-func main() {
-	// Wrap myLogger around  apex logger
-	mylog := &myLogger{
-		logger: alog.Logger{
-			Handler: text.New(os.Stdout),
-			Level:   alog.DebugLevel,
-		},
-	}
-
-	var (
-		app             = flag.String("app", "", "Consumer app name")
-		stream          = flag.String("stream", "", "Stream name")
-		tableName       = flag.String("table", "", "Checkpoint table name")
-		ddbEndpoint     = flag.String("ddb-endpoint", "http://localhost:8000", "DynamoDB endpoint")
-		kinesisEndpoint = flag.String("ksis-endpoint", "http://localhost:4567", "Kinesis endpoint")
-		awsRegion       = flag.String("region", "us-west-2", "AWS Region")
-	)
-	flag.Parse()
-
-	// set up clients
-	kcfg, err := newConfig(*kinesisEndpoint, *awsRegion)
-	if err != nil {
-		log.Fatalf("new kinesis config error: %v", err)
-	}
-	var myKsis = kinesis.NewFromConfig(kcfg)
-
-	dcfg, err := newConfig(*ddbEndpoint, *awsRegion)
-	if err != nil {
-		log.Fatalf("new ddb config error: %v", err)
-	}
-	var myDdbClient = dynamodb.NewFromConfig(dcfg)
-
-	// ddb checkpoint table
-	if err := createTable(myDdbClient, *tableName); err != nil {
-		log.Fatalf("create ddb table error: %v", err)
-	}
-
-	// ddb persitance
-	ddb, err := storage.New(*app, *tableName, storage.WithDynamoClient(myDdbClient), storage.WithRetryer(&MyRetryer{}))
-	if err != nil {
-		log.Fatalf("checkpoint error: %v", err)
-	}
-
-	// expvar counter
-	var counter = expvar.NewMap("counters")
-
-	// consumer
-	c, err := consumer.New(
-		*stream,
-		consumer.WithStore(ddb),
-		consumer.WithLogger(mylog),
-		consumer.WithCounter(counter),
-		consumer.WithClient(myKsis),
-	)
-	if err != nil {
-		log.Fatalf("consumer error: %v", err)
-	}
-
-	// use cancel func to signal shutdown
-	ctx, cancel := context.WithCancel(context.Background())
-
-	// trap SIGINT, wait to trigger shutdown
-	signals := make(chan os.Signal, 1)
-	signal.Notify(signals, os.Interrupt)
-
-	go func() {
-		<-signals
-		cancel()
-	}()
-
-	// scan stream
-	err = c.Scan(ctx, func(r *consumer.Record) error {
-		fmt.Println(string(r.Data))
-		return nil // continue scanning
-	})
-	if err != nil {
-		log.Fatalf("scan error: %v", err)
-	}
-
-	if err := ddb.Shutdown(); err != nil {
-		log.Fatalf("storage shutdown error: %v", err)
-	}
-}
-
-func createTable(client *dynamodb.Client, tableName string) error {
-	resp, err := client.ListTables(context.Background(), &dynamodb.ListTablesInput{})
-	if err != nil {
-		return fmt.Errorf("list streams error: %v", err)
-	}
-
-	for _, val := range resp.TableNames {
-		if tableName == val {
-			return nil
-		}
-	}
-
-	_, err = client.CreateTable(
-		context.Background(),
-		&dynamodb.CreateTableInput{
-			TableName: aws.String(tableName),
-			AttributeDefinitions: []ddbtypes.AttributeDefinition{
-				{AttributeName: aws.String("namespace"), AttributeType: "S"},
-				{AttributeName: aws.String("shard_id"), AttributeType: "S"},
-			},
-			KeySchema: []ddbtypes.KeySchemaElement{
-				{AttributeName: aws.String("namespace"), KeyType: ddbtypes.KeyTypeHash},
-				{AttributeName: aws.String("shard_id"), KeyType: ddbtypes.KeyTypeRange},
-			},
-			ProvisionedThroughput: &ddbtypes.ProvisionedThroughput{
-				ReadCapacityUnits:  aws.Int64(1),
-				WriteCapacityUnits: aws.Int64(1),
-			},
-		},
-	)
-	if err != nil {
-		return err
-	}
-
-	waiter := dynamodb.NewTableExistsWaiter(client)
-	return waiter.Wait(
-		context.Background(),
-		&dynamodb.DescribeTableInput{
-			TableName: aws.String(tableName),
-		},
-		5*time.Second,
-	)
-}
-
-// MyRetryer used for storage
-type MyRetryer struct {
-	storage.Retryer
-}
-
-// ShouldRetry implements custom logic for when errors should retry
-func (r *MyRetryer) ShouldRetry(err error) bool {
-	switch err.(type) {
-	case *types.ProvisionedThroughputExceededException, *types.LimitExceededException:
-		return true
-	}
-	return false
-}
-
-func newConfig(url, region string) (aws.Config, error) {
-	resolver := aws.EndpointResolverFunc(func(service, region string) (aws.Endpoint, error) {
-		return aws.Endpoint{
-			PartitionID:   "aws",
-			URL:           url,
-			SigningRegion: region,
-		}, nil
-	})
-
-	return config.LoadDefaultConfig(
-		context.TODO(),
-		config.WithRegion(region),
-		config.WithEndpointResolver(resolver),
-		config.WithCredentialsProvider(credentials.NewStaticCredentialsProvider("user", "pass", "token")),
-	)
-}

examples/producer/main.go

@@ -1,116 +0,0 @@
-package main
-
-import (
-	"bufio"
-	"context"
-	"flag"
-	"fmt"
-	"log"
-	"os"
-	"time"
-
-	"github.com/aws/aws-sdk-go-v2/aws"
-	"github.com/aws/aws-sdk-go-v2/config"
-	"github.com/aws/aws-sdk-go-v2/credentials"
-	"github.com/aws/aws-sdk-go-v2/service/kinesis"
-	"github.com/aws/aws-sdk-go-v2/service/kinesis/types"
-)
-
-func main() {
-	var (
-		streamName      = flag.String("stream", "", "Stream name")
-		kinesisEndpoint = flag.String("endpoint", "http://localhost:4567", "Kinesis endpoint")
-		awsRegion       = flag.String("region", "us-west-2", "AWS Region")
-	)
-	flag.Parse()
-
-	var records []types.PutRecordsRequestEntry
-
-	resolver := aws.EndpointResolverFunc(func(service, region string) (aws.Endpoint, error) {
-		return aws.Endpoint{
-			PartitionID:   "aws",
-			URL:           *kinesisEndpoint,
-			SigningRegion: *awsRegion,
-		}, nil
-	})
-
-	cfg, err := config.LoadDefaultConfig(
-		context.TODO(),
-		config.WithRegion(*awsRegion),
-		config.WithEndpointResolver(resolver),
-		config.WithCredentialsProvider(credentials.NewStaticCredentialsProvider("user", "pass", "token")),
-	)
-	if err != nil {
-		log.Fatalf("unable to load SDK config, %v", err)
-	}
-	var client = kinesis.NewFromConfig(cfg)
-
-	// create stream if doesn't exist
-	if err := createStream(client, *streamName); err != nil {
-		log.Fatalf("create stream error: %v", err)
-	}
-
-	// loop over file data
-	b := bufio.NewScanner(os.Stdin)
-
-	for b.Scan() {
-		records = append(records, types.PutRecordsRequestEntry{
-			Data:         b.Bytes(),
-			PartitionKey: aws.String(time.Now().Format(time.RFC3339Nano)),
-		})
-
-		if len(records) > 250 {
-			putRecords(client, streamName, records)
-			records = nil
-		}
-	}
-
-	if len(records) > 0 {
-		putRecords(client, streamName, records)
-	}
-}
-
-func createStream(client *kinesis.Client, streamName string) error {
-	resp, err := client.ListStreams(context.Background(), &kinesis.ListStreamsInput{})
-	if err != nil {
-		return fmt.Errorf("list streams error: %v", err)
-	}
-
-	for _, val := range resp.StreamNames {
-		if streamName == val {
-			return nil
-		}
-	}
-
-	_, err = client.CreateStream(
-		context.Background(),
-		&kinesis.CreateStreamInput{
-			StreamName: aws.String(streamName),
-			ShardCount: aws.Int32(2),
-		},
-	)
-	if err != nil {
-		return err
-	}
-
-	waiter := kinesis.NewStreamExistsWaiter(client)
-	return waiter.Wait(
-		context.Background(),
-		&kinesis.DescribeStreamInput{
-			StreamName: aws.String(streamName),
-		},
-		30*time.Second,
-	)
-}
-
-func putRecords(client *kinesis.Client, streamName *string, records []types.PutRecordsRequestEntry) {
-	_, err := client.PutRecords(context.Background(), &kinesis.PutRecordsInput{
-		StreamName: streamName,
-		Records:    records,
-	})
-	if err != nil {
-		log.Fatalf("error putting records: %v", err)
-	}
-
-	fmt.Print(".")
-}

go.mod

@@ -5,20 +5,13 @@ require (
 	github.com/alicebob/gopher-json v0.0.0-20200520072559-a9ecdc9d1d3a // indirect
 	github.com/alicebob/miniredis v2.5.0+incompatible
 	github.com/apex/log v1.6.0
-	github.com/aws/aws-sdk-go-v2 v1.11.2
+	github.com/aws/aws-sdk-go v1.33.7
-	github.com/aws/aws-sdk-go-v2/config v1.6.1
+	github.com/awslabs/kinesis-aggregation/go v0.0.0-20200810181507-d352038274c0
-	github.com/aws/aws-sdk-go-v2/credentials v1.3.3
+	github.com/go-redis/redis/v8 v8.0.0-beta.6
-	github.com/aws/aws-sdk-go-v2/feature/dynamodb/attributevalue v1.2.0
-	github.com/aws/aws-sdk-go-v2/service/dynamodb v1.5.0
-	github.com/aws/aws-sdk-go-v2/service/kinesis v1.6.0
-	github.com/awslabs/kinesis-aggregation/go v0.0.0-20210630091500-54e17340d32f
-	github.com/go-redis/redis/v9 v9.0.0-rc.2
 	github.com/go-sql-driver/mysql v1.5.0
-	github.com/golang/protobuf v1.5.2
 	github.com/gomodule/redigo v2.0.0+incompatible // indirect
 	github.com/lib/pq v1.7.0
 	github.com/pkg/errors v0.9.1
-	github.com/stretchr/testify v1.8.1
 	github.com/yuin/gopher-lua v0.0.0-20200603152657-dc2b0ca8b37e // indirect
 )
 

go.sum

@@ -1,5 +1,13 @@
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 github.com/DATA-DOG/go-sqlmock v1.4.1 h1:ThlnYciV1iM/V0OSF/dtkqWb6xo5qITT1TJBG1MRDJM=
 github.com/DATA-DOG/go-sqlmock v1.4.1/go.mod h1:f/Ixk793poVmq4qj/V1dPUg2JEAKC73Q5eFN3EC/SaM=
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@@ -11,100 +19,71 @@ github.com/aphistic/golf v0.0.0-20180712155816-02c07f170c5a/go.mod h1:3NqKYiepwy
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-gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=

group.go

@@ -3,19 +3,12 @@ package consumer
 import (
 	"context"
 
-	"github.com/aws/aws-sdk-go-v2/service/kinesis/types"
+	"github.com/aws/aws-sdk-go/service/kinesis"
 )
 
 // Group interface used to manage which shard to process
 type Group interface {
-	Start(ctx context.Context, shardc chan types.Shard) error
+	Start(ctx context.Context, shardc chan *kinesis.Shard)
 	GetCheckpoint(streamName, shardID string) (string, error)
 	SetCheckpoint(streamName, shardID, sequenceNumber string) error
 }
-
-type CloseableGroup interface {
-	Group
-	// Allows shard processors to tell the group when the shard has been
-	// fully processed.  Should be called only once per shardID.
-	CloseShard(ctx context.Context, shardID string) error
-}

internal/deaggregator/README.md

@@ -1,6 +0,0 @@
-# Temporary Deaggregator
-
-Upgrading to aws-sdk-go-v2 was blocked on a PR to introduce a new Deaggregator:
-https://github.com/awslabs/kinesis-aggregation/pull/143/files
-
-Once that PR is merged I'll remove this code and pull in the `awslabs/kinesis-aggregation` repo.

internal/deaggregator/deaggregator.go

@@ -1,94 +0,0 @@
-// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
-// SPDX-License-Identifier: Apache-2.0
-package deaggregator
-
-import (
-	"crypto/md5"
-	"fmt"
-
-	"github.com/aws/aws-sdk-go-v2/service/kinesis/types"
-	"github.com/golang/protobuf/proto"
-
-	rec "github.com/awslabs/kinesis-aggregation/go/records"
-)
-
-// Magic File Header for a KPL Aggregated Record
-var KplMagicHeader = fmt.Sprintf("%q", []byte("\xf3\x89\x9a\xc2"))
-
-const (
-	KplMagicLen = 4  // Length of magic header for KPL Aggregate Record checking.
-	DigestSize  = 16 // MD5 Message size for protobuf.
-)
-
-// DeaggregateRecords takes an array of Kinesis records and expands any Protobuf
-// records within that array, returning an array of all records
-func DeaggregateRecords(records []*types.Record) ([]*types.Record, error) {
-	var isAggregated bool
-	allRecords := make([]*types.Record, 0)
-	for _, record := range records {
-		isAggregated = true
-
-		var dataMagic string
-		var decodedDataNoMagic []byte
-		// Check if record is long enough to have magic file header
-		if len(record.Data) >= KplMagicLen {
-			dataMagic = fmt.Sprintf("%q", record.Data[:KplMagicLen])
-			decodedDataNoMagic = record.Data[KplMagicLen:]
-		} else {
-			isAggregated = false
-		}
-
-		// Check if record has KPL Aggregate Record Magic Header and data length
-		// is correct size
-		if KplMagicHeader != dataMagic || len(decodedDataNoMagic) <= DigestSize {
-			isAggregated = false
-		}
-
-		if isAggregated {
-			messageDigest := fmt.Sprintf("%x", decodedDataNoMagic[len(decodedDataNoMagic)-DigestSize:])
-			messageData := decodedDataNoMagic[:len(decodedDataNoMagic)-DigestSize]
-
-			calculatedDigest := fmt.Sprintf("%x", md5.Sum(messageData))
-
-			// Check protobuf MD5 hash matches MD5 sum of record
-			if messageDigest != calculatedDigest {
-				isAggregated = false
-			} else {
-				aggRecord := &rec.AggregatedRecord{}
-				err := proto.Unmarshal(messageData, aggRecord)
-
-				if err != nil {
-					return nil, err
-				}
-
-				partitionKeys := aggRecord.PartitionKeyTable
-
-				for _, aggrec := range aggRecord.Records {
-					newRecord := createUserRecord(partitionKeys, aggrec, record)
-					allRecords = append(allRecords, newRecord)
-				}
-			}
-		}
-
-		if !isAggregated {
-			allRecords = append(allRecords, record)
-		}
-	}
-
-	return allRecords, nil
-}
-
-// createUserRecord takes in the partitionKeys of the aggregated record, the individual
-// deaggregated record, and the original aggregated record builds a kinesis.Record and
-// returns it
-func createUserRecord(partitionKeys []string, aggRec *rec.Record, record *types.Record) *types.Record {
-	partitionKey := partitionKeys[*aggRec.PartitionKeyIndex]
-
-	return &types.Record{
-		ApproximateArrivalTimestamp: record.ApproximateArrivalTimestamp,
-		Data:                        aggRec.Data,
-		EncryptionType:              record.EncryptionType,
-		PartitionKey:                &partitionKey,
-		SequenceNumber:              record.SequenceNumber,
-	}
-}

internal/deaggregator/deaggregator_test.go

@@ -1,202 +0,0 @@
-// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
-// SPDX-License-Identifier: Apache-2.0
-package deaggregator_test
-
-import (
-	"crypto/md5"
-	"fmt"
-	"math/rand"
-	"testing"
-	"time"
-
-	"github.com/aws/aws-sdk-go-v2/service/kinesis/types"
-	"github.com/golang/protobuf/proto"
-	"github.com/stretchr/testify/assert"
-
-	rec "github.com/awslabs/kinesis-aggregation/go/records"
-	deagg "github.com/harlow/kinesis-consumer/internal/deaggregator"
-)
-
-// Generate an aggregate record in the correct AWS-specified format
-// https://github.com/awslabs/amazon-kinesis-producer/blob/master/aggregation-format.md
-func generateAggregateRecord(numRecords int) []byte {
-
-	aggr := &rec.AggregatedRecord{}
-	// Start with the magic header
-	aggRecord := []byte("\xf3\x89\x9a\xc2")
-	partKeyTable := make([]string, 0)
-
-	// Create proto record with numRecords length
-	for i := 0; i < numRecords; i++ {
-		var partKey uint64
-		var hashKey uint64
-		partKey = uint64(i)
-		hashKey = uint64(i) * uint64(10)
-		r := &rec.Record{
-			PartitionKeyIndex:    &partKey,
-			ExplicitHashKeyIndex: &hashKey,
-			Data:                 []byte("Some test data string"),
-			Tags:                 make([]*rec.Tag, 0),
-		}
-
-		aggr.Records = append(aggr.Records, r)
-		partKeyVal := "test" + fmt.Sprint(i)
-		partKeyTable = append(partKeyTable, partKeyVal)
-	}
-
-	aggr.PartitionKeyTable = partKeyTable
-	// Marshal to protobuf record, create md5 sum from proto record
-	// and append both to aggRecord with magic header
-	data, _ := proto.Marshal(aggr)
-	md5Hash := md5.Sum(data)
-	aggRecord = append(aggRecord, data...)
-	aggRecord = append(aggRecord, md5Hash[:]...)
-	return aggRecord
-}
-
-// Generate a generic kinesis.Record using whatever []byte
-// is passed in as the data (can be normal []byte or proto record)
-func generateKinesisRecord(data []byte) *types.Record {
-	currentTime := time.Now()
-	encryptionType := types.EncryptionTypeNone
-	partitionKey := "1234"
-	sequenceNumber := "21269319989900637946712965403778482371"
-	return &types.Record{
-		ApproximateArrivalTimestamp: &currentTime,
-		Data:                        data,
-		EncryptionType:              encryptionType,
-		PartitionKey:                &partitionKey,
-		SequenceNumber:              &sequenceNumber,
-	}
-}
-
-// This tests to make sure that the data is at least larger than the length
-// of the magic header to do some array slicing with index out of bounds
-func TestSmallLengthReturnsCorrectNumberOfDeaggregatedRecords(t *testing.T) {
-	var err error
-	var kr *types.Record
-
-	krs := make([]*types.Record, 0, 1)
-
-	smallByte := []byte("No")
-	kr = generateKinesisRecord(smallByte)
-	krs = append(krs, kr)
-	dars, err := deagg.DeaggregateRecords(krs)
-	if err != nil {
-		panic(err)
-	}
-
-	// Small byte test, since this is not a deaggregated record, should return 1
-	// record in the array.
-	assert.Equal(t, 1, len(dars), "Small Byte test should return length of 1.")
-}
-
-// This function tests to make sure that the data starts with the correct magic header
-// according to KPL aggregate documentation.
-func TestNonMatchingMagicHeaderReturnsSingleRecord(t *testing.T) {
-	var err error
-	var kr *types.Record
-
-	krs := make([]*types.Record, 0, 1)
-
-	min := 1
-	max := 10
-	n := rand.Intn(max-min) + min
-	aggData := generateAggregateRecord(n)
-	mismatchAggData := aggData[1:]
-	kr = generateKinesisRecord(mismatchAggData)
-
-	krs = append(krs, kr)
-
-	dars, err := deagg.DeaggregateRecords(krs)
-	if err != nil {
-		panic(err)
-	}
-
-	// A byte record with a magic header that does not match 0xF3 0x89 0x9A 0xC2
-	// should return a single record.
-	assert.Equal(t, 1, len(dars), "Mismatch magic header test should return length of 1.")
-}
-
-// This function tests that the DeaggregateRecords function returns the correct number of
-// deaggregated records from a single aggregated record.
-func TestVariableLengthRecordsReturnsCorrectNumberOfDeaggregatedRecords(t *testing.T) {
-	var err error
-	var kr *types.Record
-
-	krs := make([]*types.Record, 0, 1)
-
-	min := 1
-	max := 10
-	n := rand.Intn(max-min) + min
-	aggData := generateAggregateRecord(n)
-	kr = generateKinesisRecord(aggData)
-	krs = append(krs, kr)
-
-	dars, err := deagg.DeaggregateRecords(krs)
-	if err != nil {
-		panic(err)
-	}
-
-	// Variable Length Aggregate Record test has aggregaterd records and should return
-	// n length.
-	assertMsg := fmt.Sprintf("Variable Length Aggregate Record should return length %v.", len(dars))
-	assert.Equal(t, n, len(dars), assertMsg)
-}
-
-// This function tests the length of the message after magic file header. If length is less than
-// the digest size (16 bytes), it is not an aggregated record.
-func TestRecordAfterMagicHeaderWithLengthLessThanDigestSizeReturnsSingleRecord(t *testing.T) {
-	var err error
-	var kr *types.Record
-
-	krs := make([]*types.Record, 0, 1)
-
-	min := 1
-	max := 10
-	n := rand.Intn(max-min) + min
-	aggData := generateAggregateRecord(n)
-	// Change size of proto message to 15
-	reducedAggData := aggData[:19]
-	kr = generateKinesisRecord(reducedAggData)
-
-	krs = append(krs, kr)
-
-	dars, err := deagg.DeaggregateRecords(krs)
-	if err != nil {
-		panic(err)
-	}
-
-	// A byte record with length less than 16 after the magic header should return
-	// a single record from DeaggregateRecords
-	assert.Equal(t, 1, len(dars), "Digest size test should return length of 1.")
-}
-
-// This function tests the MD5 Sum at the end of the record by comparing MD5 sum
-// at end of proto record with MD5 Sum of Proto message. If they do not match,
-// it is not an aggregated record.
-func TestRecordWithMismatchMd5SumReturnsSingleRecord(t *testing.T) {
-	var err error
-	var kr *types.Record
-
-	krs := make([]*types.Record, 0, 1)
-
-	min := 1
-	max := 10
-	n := rand.Intn(max-min) + min
-	aggData := generateAggregateRecord(n)
-	// Remove last byte from array to mismatch the MD5 sums
-	mismatchAggData := aggData[:len(aggData)-1]
-	kr = generateKinesisRecord(mismatchAggData)
-
-	krs = append(krs, kr)
-
-	dars, err := deagg.DeaggregateRecords(krs)
-	if err != nil {
-		panic(err)
-	}
-
-	// A byte record with an MD5 sum that does not match with the md5.Sum(record)
-	// will be marked as a non-aggregate record and return a single record
-	assert.Equal(t, 1, len(dars), "Mismatch md5 sum test should return length of 1.")
-}

kinesis.go

@@ -1,23 +1,22 @@
 package consumer
 
 import (
-	"context"
 	"fmt"
 
-	"github.com/aws/aws-sdk-go-v2/aws"
+	"github.com/aws/aws-sdk-go/aws"
-	"github.com/aws/aws-sdk-go-v2/service/kinesis"
+	"github.com/aws/aws-sdk-go/service/kinesis"
-	"github.com/aws/aws-sdk-go-v2/service/kinesis/types"
+	"github.com/aws/aws-sdk-go/service/kinesis/kinesisiface"
 )
 
-// listShards pulls a list of Shard IDs from the kinesis api
+// listShards pulls a list of shard IDs from the kinesis api
-func listShards(ctx context.Context, ksis kinesisClient, streamName string) ([]types.Shard, error) {
+func listShards(ksis kinesisiface.KinesisAPI, streamName string) ([]*kinesis.Shard, error) {
-	var ss []types.Shard
+	var ss []*kinesis.Shard
 	var listShardsInput = &kinesis.ListShardsInput{
 		StreamName: aws.String(streamName),
 	}
 
 	for {
-		resp, err := ksis.ListShards(ctx, listShardsInput)
+		resp, err := ksis.ListShards(listShardsInput)
 		if err != nil {
 			return nil, fmt.Errorf("ListShards error: %w", err)
 		}

options.go

@@ -3,7 +3,7 @@ package consumer
 import (
 	"time"
 
-	"github.com/aws/aws-sdk-go-v2/service/kinesis/types"
+	"github.com/aws/aws-sdk-go/service/kinesis/kinesisiface"
 )
 
 // Option is used to override defaults when creating a new Consumer
@@ -38,7 +38,7 @@ func WithCounter(counter Counter) Option {
 }
 
 // WithClient overrides the default client
-func WithClient(client kinesisClient) Option {
+func WithClient(client kinesisiface.KinesisAPI) Option {
 	return func(c *Consumer) {
 		c.client = client
 	}
@@ -47,7 +47,7 @@ func WithClient(client kinesisClient) Option {
 // WithShardIteratorType overrides the starting point for the consumer
 func WithShardIteratorType(t string) Option {
 	return func(c *Consumer) {
-		c.initialShardIteratorType = types.ShardIteratorType(t)
+		c.initialShardIteratorType = t
 	}
 }
 

store/ddb/ddb.go

@@ -1,17 +1,16 @@
 package ddb
 
 import (
-	"context"
 	"fmt"
 	"log"
 	"sync"
 	"time"
 
-	"github.com/aws/aws-sdk-go-v2/aws"
+	"github.com/aws/aws-sdk-go/aws"
-	"github.com/aws/aws-sdk-go-v2/config"
+	"github.com/aws/aws-sdk-go/aws/session"
-	"github.com/aws/aws-sdk-go-v2/feature/dynamodb/attributevalue"
+	"github.com/aws/aws-sdk-go/service/dynamodb"
-	"github.com/aws/aws-sdk-go-v2/service/dynamodb"
+	"github.com/aws/aws-sdk-go/service/dynamodb/dynamodbattribute"
-	"github.com/aws/aws-sdk-go-v2/service/dynamodb/types"
+	"github.com/aws/aws-sdk-go/service/dynamodb/dynamodbiface"
 )
 
 // Option is used to override defaults when creating a new Checkpoint
@@ -25,7 +24,7 @@ func WithMaxInterval(maxInterval time.Duration) Option {
 }
 
 // WithDynamoClient sets the dynamoDb client
-func WithDynamoClient(svc *dynamodb.Client) Option {
+func WithDynamoClient(svc dynamodbiface.DynamoDBAPI) Option {
 	return func(c *Checkpoint) {
 		c.client = svc
 	}
@@ -40,6 +39,7 @@ func WithRetryer(r Retryer) Option {
 
 // New returns a checkpoint that uses DynamoDB for underlying storage
 func New(appName, tableName string, opts ...Option) (*Checkpoint, error) {
+
 	ck := &Checkpoint{
 		tableName:   tableName,
 		appName:     appName,
@@ -56,11 +56,11 @@ func New(appName, tableName string, opts ...Option) (*Checkpoint, error) {
 
 	// default client
 	if ck.client == nil {
-		cfg, err := config.LoadDefaultConfig(context.TODO())
+		newSession, err := session.NewSession(aws.NewConfig())
 		if err != nil {
-			log.Fatalf("unable to load SDK config, %v", err)
+			return nil, err
 		}
-		ck.client = dynamodb.NewFromConfig(cfg)
+		ck.client = dynamodb.New(newSession)
 	}
 
 	go ck.loop()
@@ -72,7 +72,7 @@ func New(appName, tableName string, opts ...Option) (*Checkpoint, error) {
 type Checkpoint struct {
 	tableName   string
 	appName     string
-	client      *dynamodb.Client
+	client      dynamodbiface.DynamoDBAPI
 	maxInterval time.Duration
 	mu          *sync.Mutex // protects the checkpoints
 	checkpoints map[key]string
@@ -81,14 +81,14 @@ type Checkpoint struct {
 }
 
 type key struct {
-	StreamName string
+	streamName string
-	ShardID    string
+	shardID    string
 }
 
 type item struct {
-	Namespace      string `json:"namespace" dynamodbav:"namespace"`
+	Namespace      string `json:"namespace"`
-	ShardID        string `json:"shard_id" dynamodbav:"shard_id"`
+	ShardID        string `json:"shard_id"`
-	SequenceNumber string `json:"sequence_number" dynamodbav:"sequence_number"`
+	SequenceNumber string `json:"sequence_number"`
 }
 
 // GetCheckpoint determines if a checkpoint for a particular Shard exists.
@@ -100,13 +100,17 @@ func (c *Checkpoint) GetCheckpoint(streamName, shardID string) (string, error) {
 	params := &dynamodb.GetItemInput{
 		TableName:      aws.String(c.tableName),
 		ConsistentRead: aws.Bool(true),
-		Key: map[string]types.AttributeValue{
+		Key: map[string]*dynamodb.AttributeValue{
-			"namespace": &types.AttributeValueMemberS{Value: namespace},
+			"namespace": &dynamodb.AttributeValue{
-			"shard_id":  &types.AttributeValueMemberS{Value: shardID},
+				S: aws.String(namespace),
+			},
+			"shard_id": &dynamodb.AttributeValue{
+				S: aws.String(shardID),
+			},
 		},
 	}
 
-	resp, err := c.client.GetItem(context.Background(), params)
+	resp, err := c.client.GetItem(params)
 	if err != nil {
 		if c.retryer.ShouldRetry(err) {
 			return c.GetCheckpoint(streamName, shardID)
@@ -115,7 +119,7 @@ func (c *Checkpoint) GetCheckpoint(streamName, shardID string) (string, error) {
 	}
 
 	var i item
-	attributevalue.UnmarshalMap(resp.Item, &i)
+	dynamodbattribute.UnmarshalMap(resp.Item, &i)
 	return i.SequenceNumber, nil
 }
 
@@ -130,8 +134,8 @@ func (c *Checkpoint) SetCheckpoint(streamName, shardID, sequenceNumber string) e
 	}
 
 	key := key{
-		StreamName: streamName,
+		streamName: streamName,
-		ShardID:    shardID,
+		shardID:    shardID,
 	}
 	c.checkpoints[key] = sequenceNumber
 
@@ -164,9 +168,9 @@ func (c *Checkpoint) save() error {
 	defer c.mu.Unlock()
 
 	for key, sequenceNumber := range c.checkpoints {
-		item, err := attributevalue.MarshalMap(item{
+		item, err := dynamodbattribute.MarshalMap(item{
-			Namespace:      fmt.Sprintf("%s-%s", c.appName, key.StreamName),
+			Namespace:      fmt.Sprintf("%s-%s", c.appName, key.streamName),
-			ShardID:        key.ShardID,
+			ShardID:        key.shardID,
 			SequenceNumber: sequenceNumber,
 		})
 		if err != nil {
@@ -174,12 +178,10 @@ func (c *Checkpoint) save() error {
 			return nil
 		}
 
-		_, err = c.client.PutItem(
+		_, err = c.client.PutItem(&dynamodb.PutItemInput{
-			context.TODO(),
+			TableName: aws.String(c.tableName),
-			&dynamodb.PutItemInput{
+			Item:      item,
-				TableName: aws.String(c.tableName),
+		})
-				Item:      item,
-			})
 		if err != nil {
 			if !c.retryer.ShouldRetry(err) {
 				return err

store/ddb/ddb_test.go

@@ -1,13 +1,12 @@
 package ddb
 
 import (
-	"context"
-	"log"
 	"testing"
 	"time"
 
-	"github.com/aws/aws-sdk-go-v2/config"
+	"github.com/aws/aws-sdk-go/aws"
-	"github.com/aws/aws-sdk-go-v2/service/dynamodb"
+	"github.com/aws/aws-sdk-go/aws/session"
+	"github.com/aws/aws-sdk-go/service/dynamodb"
 )
 
 type fakeRetryer struct {
@@ -43,12 +42,11 @@ func TestCheckpointSetting(t *testing.T) {
 	setRetryer(ckPtr)
 
 	// Test WithDyanmoDBClient
-	cfg, err := config.LoadDefaultConfig(context.TODO())
+	var fakeDbClient = dynamodb.New(
-	if err != nil {
+		session.New(aws.NewConfig()), &aws.Config{
-		log.Fatalf("unable to load SDK config, %v", err)
+			Region: aws.String("us-west-2"),
-	}
+		},
-	var fakeDbClient = dynamodb.NewFromConfig(cfg)
+	)
-
 	setDDBClient := WithDynamoClient(fakeDbClient)
 	setDDBClient(ckPtr)
 
@@ -72,12 +70,11 @@ func TestNewCheckpointWithOptions(t *testing.T) {
 	setRetryer := WithRetryer(&r)
 
 	// Test WithDyanmoDBClient
-	cfg, err := config.LoadDefaultConfig(context.TODO())
+	var fakeDbClient = dynamodb.New(
-	if err != nil {
+		session.New(aws.NewConfig()), &aws.Config{
-		log.Fatalf("unable to load SDK config, %v", err)
+			Region: aws.String("us-west-2"),
-	}
+		},
-	var fakeDbClient = dynamodb.NewFromConfig(cfg)
+	)
-
 	setDDBClient := WithDynamoClient(fakeDbClient)
 
 	ckPtr, err := New("testapp", "testtable", setInterval, setRetryer, setDDBClient)

store/ddb/retryer.go

@@ -1,7 +1,8 @@
 package ddb
 
 import (
-	"github.com/aws/aws-sdk-go-v2/service/dynamodb/types"
+	"github.com/aws/aws-sdk-go/aws/awserr"
+	"github.com/aws/aws-sdk-go/service/dynamodb"
 )
 
 // Retryer interface contains one method that decides whether to retry based on error
@@ -16,9 +17,10 @@ type DefaultRetryer struct {
 
 // ShouldRetry when error occured
 func (r *DefaultRetryer) ShouldRetry(err error) bool {
-	switch err.(type) {
+	if awsErr, ok := err.(awserr.Error); ok {
-	case *types.ProvisionedThroughputExceededException:
+		if awsErr.Code() == dynamodb.ErrCodeProvisionedThroughputExceededException {
-		return true
+			return true
+		}
 	}
 	return false
 }

store/ddb/retryer_test.go

@@ -1,21 +1,22 @@
 package ddb
 
 import (
+	"errors"
 	"testing"
 
-	"github.com/aws/aws-sdk-go-v2/aws"
+	"github.com/aws/aws-sdk-go/aws/awserr"
-	"github.com/aws/aws-sdk-go-v2/service/dynamodb/types"
+	"github.com/aws/aws-sdk-go/service/dynamodb"
 )
 
 func TestDefaultRetyer(t *testing.T) {
-	retryableError := &types.ProvisionedThroughputExceededException{Message: aws.String("error not retryable")}
+	retryableError := awserr.New(dynamodb.ErrCodeProvisionedThroughputExceededException, "error is retryable", errors.New("don't care what is here"))
 	// retryer is not nil and should returns according to what error is passed in.
 	q := &DefaultRetryer{}
 	if q.ShouldRetry(retryableError) != true {
 		t.Errorf("expected ShouldRetry returns %v. got %v", false, q.ShouldRetry(retryableError))
 	}
 
-	nonRetryableError := &types.BackupInUseException{Message: aws.String("error not retryable")}
+	nonRetryableError := awserr.New(dynamodb.ErrCodeBackupInUseException, "error is not retryable", errors.New("don't care what is here"))
 	shouldRetry := q.ShouldRetry(nonRetryableError)
 	if shouldRetry != false {
 		t.Errorf("expected ShouldRetry returns %v. got %v", true, shouldRetry)

store/redis/options.go

@@ -1,6 +1,6 @@
 package redis
 
-import redis "github.com/go-redis/redis/v9"
+import redis "github.com/go-redis/redis/v8"
 
 // Option is used to override defaults when creating a new Redis checkpoint
 type Option func(*Checkpoint)

store/redis/redis.go

@@ -5,7 +5,7 @@ import (
 	"fmt"
 	"os"
 
-	redis "github.com/go-redis/redis/v9"
+	redis "github.com/go-redis/redis/v8"
 )
 
 const localhost = "127.0.0.1:6379"

store/redis/redis_test.go

@@ -4,7 +4,7 @@ import (
 	"testing"
 
 	"github.com/alicebob/miniredis"
-	redis "github.com/go-redis/redis/v9"
+	redis "github.com/go-redis/redis/v8"
 )
 
 func Test_CheckpointOptions(t *testing.T) {