small changes

client.go

@@ -14,25 +14,22 @@ func NewClient(config *Config) (*Client, error) {
 	client := &Client{
 		config: config,
 	}
-
-	cfg := elasticsearch.Config{
-		Addresses: []string{
-			config.Host,
-		},
-	}
-
-	es, err := elasticsearch.NewClient(cfg)
-	if err != nil {
-		return nil, err
-	}
-
-	client.es = es
 	return client, nil
 }
 
 func (c *Client) Open() error {
-
 	// Open a connection with ElasticSearch
+	cfg := elasticsearch.Config{
+		Addresses: []string{
+			c.config.Host,
+		},
+	}
+
+	var err error
+	c.es, err = elasticsearch.NewClient(cfg)
+	if err != nil {
+		return err
+	}
 
 	// create a buffer channel
 	c.ch = make(chan Data, 1)
@@ -48,6 +45,10 @@ func (c *Client) Read() (Data, error) {
 	return Data{}, nil
 }
 
+// func (c *Client) Ack(ctx context.Context, position int) error {
+// 	return nil
+// }
+
 // close the client
 func (c *Client) Teardown() error {
 	return nil

config.go

@@ -5,4 +5,5 @@ type Config struct {
 	// map of index name and position from where data is to be read.
 	Indexes   []string
 	BatchSize int
+	DBPath    string
 }