clean up various TODOs and comments

graphql/client.go

@@ -5,7 +5,6 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
 	"net/http"
 
 	"github.com/vektah/gqlparser/gqlerror"
@@ -29,8 +28,12 @@ type payload struct {
 	Variables map[string]interface{} `json:"variables"`
 }
 
+type response struct {
+	Data   json.RawMessage `json:"data"`
+	Errors gqlerror.List   `json:"errors"`
+}
+
 func (client *Client) MakeRequest(ctx context.Context, query string, retval interface{}, variables map[string]interface{}) error {
-	// TODO: streaming reads and writes
 	body, err := json.Marshal(payload{
 		Query:     query,
 		Variables: variables,
@@ -54,21 +57,12 @@ func (client *Client) MakeRequest(ctx context.Context, query string, retval inte
 	}
 	defer resp.Body.Close()
 
-	body, err = ioutil.ReadAll(resp.Body)
-	if err != nil {
-		return err
-	}
-
 	if resp.StatusCode != http.StatusOK {
 		return fmt.Errorf("returned error %v: %v", resp.Status, string(body))
 	}
 
-	var dataAndErrors struct {
-		Data   json.RawMessage `json:"data"`
-		Errors gqlerror.List   `json:"errors"`
-	}
-
-	err = json.Unmarshal(body, &dataAndErrors)
+	var dataAndErrors response
+	err = json.NewDecoder(resp.Body).Decode(&dataAndErrors)
 	if err != nil {
 		return err
 	}