From f8e1dddc49ee220a49222719a4ed34753ecb8295 Mon Sep 17 00:00:00 2001
From: ale <ale@incal.net>
Date: Sun, 26 Nov 2017 20:08:26 +0000
Subject: [PATCH] Add helper to make JSON HTTP requests
---
clientutil/json.go | 40 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 40 insertions(+)
create mode 100644 clientutil/json.go
diff --git a/clientutil/json.go b/clientutil/json.go
new file mode 100644
index 0000000..862d086
--- /dev/null
+++ b/clientutil/json.go
@@ -0,0 +1,40 @@
+package clientutil
+
+import (
+ "bytes"
+ "encoding/json"
+ "errors"
+ "fmt"
+ "net/http"
+)
+
+func DoJSONHTTPRequest(client *http.Client, uri string, req, resp interface{}) error {
+ data, err := json.Marshal(req)
+ if err != nil {
+ return err
+ }
+
+ httpReq, err := http.NewRequest("POST", uri, bytes.NewReader(data))
+ if err != nil {
+ return err
+ }
+ httpReq.Header.Set("Content-Type", "application/json")
+
+ httpResp, err := RetryHTTPDo(client, httpReq, NewExponentialBackOff())
+ if err != nil {
+ return err
+ }
+ defer httpResp.Body.Close()
+
+ if httpResp.StatusCode != 200 {
+ return fmt.Errorf("HTTP status %d", httpResp.StatusCode)
+ }
+ if httpResp.Header.Get("Content-Type") != "application/json" {
+ return errors.New("not a JSON response")
+ }
+
+ if resp == nil {
+ return nil
+ }
+ return json.NewDecoder(httpResp.Body).Decode(resp)
+}
--
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