88 lines
2 KiB
Go
88 lines
2 KiB
Go
package main
|
|
|
|
import (
|
|
"context"
|
|
"flag"
|
|
"fmt"
|
|
"log"
|
|
"os"
|
|
"os/signal"
|
|
|
|
"github.com/aws/aws-sdk-go/aws"
|
|
"github.com/aws/aws-sdk-go/aws/session"
|
|
"github.com/aws/aws-sdk-go/service/kinesis"
|
|
consumer "github.com/harlow/kinesis-consumer"
|
|
store "github.com/harlow/kinesis-consumer/store/redis"
|
|
)
|
|
|
|
// A myLogger provides a minimalistic logger satisfying the Logger interface.
|
|
type myLogger struct {
|
|
logger *log.Logger
|
|
}
|
|
|
|
// Log logs the parameters to the stdlib logger. See log.Println.
|
|
func (l *myLogger) Log(args ...interface{}) {
|
|
l.logger.Println(args...)
|
|
}
|
|
|
|
func main() {
|
|
var (
|
|
app = flag.String("app", "", "Consumer app name")
|
|
stream = 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()
|
|
|
|
// redis checkpoint store
|
|
store, err := store.New(*app)
|
|
if err != nil {
|
|
log.Fatalf("store error: %v", err)
|
|
}
|
|
|
|
// logger
|
|
logger := &myLogger{
|
|
logger: log.New(os.Stdout, "consumer-example: ", log.LstdFlags),
|
|
}
|
|
|
|
// client
|
|
cfg := aws.NewConfig().
|
|
WithEndpoint(*kinesisEndpoint).
|
|
WithRegion(*awsRegion).
|
|
WithLogLevel(3)
|
|
|
|
var client = kinesis.New(session.Must(session.NewSession(cfg)))
|
|
|
|
// consumer
|
|
c, err := consumer.New(
|
|
*stream,
|
|
consumer.WithClient(client),
|
|
consumer.WithStore(store),
|
|
consumer.WithLogger(logger),
|
|
)
|
|
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
|
|
fmt.Println("caught exit signal, cancelling context!")
|
|
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)
|
|
}
|
|
}
|