client changes

Makefile

@@ -0,0 +1,5 @@
+all:
+	go build -o elasticstream cmd/main.go
+
+clean:
+	rm -f elasticstream

client.go

@@ -1,6 +1,8 @@
 package elasticstream
 
 import (
+	"fmt"
+
 	"github.com/elastic/go-elasticsearch/v8"
 )
 
@@ -41,8 +43,13 @@ func (c *Client) Open() error {
 	return nil
 }
 
-func (c *Client) Read() (Data, error) {
+func (c *Client) Read() (*Data, error) {
-	return Data{}, nil
+
+	data, ok := <-c.ch
+	if !ok {
+		return nil, fmt.Errorf("error reading data from channel")
+	}
+	return &data, nil
 }
 
 // func (c *Client) Ack(ctx context.Context, position int) error {