Initial implementation of an elasticsearch indexer in Go

Closes #1 (closed)

elastic/client.go

@@ -3,6 +3,7 @@ package elastic
 import (
 	"context"
 	"fmt"
+	"net/http"
 	"os"
 	"strings"
@@ -60,7 +61,7 @@ func NewClient(config *Config) (*Client, error) {
 	if config.AWS {
 		credentials := credentials.NewStaticCredentials(config.AccessKey, config.SecretKey, "")
 		signer := v4.NewSigner(credentials)
-		awsClient, err := aws_signing_client.New(signer, nil, "es", config.Region)
+		awsClient, err := aws_signing_client.New(signer, &http.Client{}, "es", config.Region)
 		if err != nil {
 			return nil, err
 		}
@@ -108,6 +109,10 @@ func (c *Client) Flush() error {
 	return c.bulk.Flush()
 }
+func (c *Client) Close() {
+	c.Client.Stop()
+}
+
 func (c *Client) Index(id string, thing interface{}) {
 	req := elastic.NewBulkIndexRequest().
 		Index(c.IndexName).