82 lines
1.8 KiB
Go
82 lines
1.8 KiB
Go
package main
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import (
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"context"
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"expvar"
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"flag"
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"fmt"
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"log"
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"os"
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"os/signal"
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"github.com/aws/aws-sdk-go/aws"
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"github.com/aws/aws-sdk-go/aws/session"
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"github.com/aws/aws-sdk-go/service/kinesis"
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consumer "github.com/harlow/kinesis-consumer"
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store "github.com/harlow/kinesis-consumer/store/postgres"
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)
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func main() {
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var (
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app = flag.String("app", "", "Consumer app name")
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stream = flag.String("stream", "", "Stream name")
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table = flag.String("table", "", "Table name")
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connStr = flag.String("connection", "", "Connection Str")
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kinesisEndpoint = flag.String("endpoint", "http://localhost:4567", "Kinesis endpoint")
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awsRegion = flag.String("region", "us-west-2", "AWS Region")
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)
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flag.Parse()
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// postgres checkpoint
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store, err := store.New(*app, *table, *connStr)
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if err != nil {
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log.Fatalf("checkpoint error: %v", err)
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}
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var counter = expvar.NewMap("counters")
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// client
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cfg := aws.NewConfig().
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WithEndpoint(*kinesisEndpoint).
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WithRegion(*awsRegion).
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WithLogLevel(3)
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var client = kinesis.New(session.Must(session.NewSession(cfg)))
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// consumer
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c, err := consumer.New(
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*stream,
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consumer.WithClient(client),
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consumer.WithStore(store),
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consumer.WithCounter(counter),
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)
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if err != nil {
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log.Fatalf("consumer error: %v", err)
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}
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// use cancel func to signal shutdown
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ctx, cancel := context.WithCancel(context.Background())
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// trap SIGINT, wait to trigger shutdown
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signals := make(chan os.Signal, 1)
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signal.Notify(signals, os.Interrupt)
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go func() {
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<-signals
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cancel()
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}()
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// scan stream
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err = c.Scan(ctx, func(r *consumer.Record) error {
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fmt.Println(string(r.Data))
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return nil // continue scanning
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})
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if err != nil {
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log.Fatalf("scan error: %v", err)
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}
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if err := store.Shutdown(); err != nil {
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log.Fatalf("store shutdown error: %v", err)
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}
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}
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