Add missing retry mechanism.

I have no idea how this was missed, but ho hum.

README.md

@@ -34,7 +34,7 @@ Therefore, I present you the simple client to which you can copy & paste your gr
 * `GRAPHQL_ENDPOINT` - Your GraphQL endpoint. Default: `http://127.0.0.1:9090/v1/graphql`
 * `GRAPHQL_CACHE_ENABLED` -  Should the query cache be enabled? Default: `false`
 * `GRAPHQL_CACHE_TTL` -  Cache TTL in seconds for SELECT type of queries. Default: `5`
-* `GRAPHQL_OUTPUT` - Output format. Default: `byte`, available: `byte`, `string`
+* `GRAPHQL_OUTPUT` - Output format. Default: `string`, available: `byte`, `string`, `mapstring`
 * `LOG_LEVEL` - Logging level. Default: `info` available: `debug`, `info`, `warn`, `error`
 * `GRAPHQL_RETRIES_ENABLE` - Should retries be enabled? Default: `true`
 * `GRAPHQL_RETRIES_NUMBER` - Number of retries: Default: `1`

base.go

@@ -98,3 +98,7 @@ func NewConnection() *BaseClient {
 func (b *BaseClient) SetEndpoint(endpoint string) {
 	b.endpoint = endpoint
 }
+
+func (b *BaseClient) SetOutput(output string) {
+	b.responseType = output
+}

query.go

@@ -120,6 +120,14 @@ func (c *BaseClient) Query(queryContent string, queryVariables interface{}, quer
 
 func (c *BaseClient) decodeResponse(jsonData []byte) any {
 	switch c.responseType {
+	case "mapstring":
+		var response map[string]interface{}
+		err := json.Unmarshal(jsonData, &response)
+		if err != nil {
+			c.Logger.Error(c, "Error while converting to map[string]interface{};", "error", err.Error())
+			return nil
+		}
+		return response
 	case "string":
 		return helpers.BytesToString(jsonData)
 	case "byte":

request.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"io/ioutil"
 	"net/http"
+	"time"
 
 	"github.com/avast/retry-go/v4"
 )
@@ -50,6 +51,13 @@ func (c *BaseClient) executeQuery(query []byte, headers any) (result any, err er
 
 			return nil
 		},
+		retry.OnRetry(func(n uint, err error) {
+			c.Logger.Error(c, "Retrying query", "error", err.Error())
+		}),
+		retry.Attempts(uint(c.retries.max)),
+		retry.DelayType(retry.BackOffDelay),
+		retry.Delay(time.Duration(c.retries.delay)*time.Second),
+		retry.LastErrorOnly(true),
 	)
 
 	if len(queryResult.Errors) > 0 {