From 5b4950e2cb9c3e9587fa1196d4e80c0d75e941d0 Mon Sep 17 00:00:00 2001
From: He Guimin <guimin.hgm@alibaba-inc.com>
Date: Fri, 5 Jun 2020 14:48:58 +0800
Subject: [PATCH] backend(oss): supports setting HTTPS_PROXY

---
 backend/remote-state/oss/backend.go | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/backend/remote-state/oss/backend.go b/backend/remote-state/oss/backend.go
index 5e7268470..b8681df6f 100644
--- a/backend/remote-state/oss/backend.go
+++ b/backend/remote-state/oss/backend.go
@@ -30,6 +30,8 @@ import (
 	"github.com/hashicorp/go-cleanhttp"
 	"github.com/hashicorp/terraform/version"
 	"github.com/mitchellh/go-homedir"
+	"net/url"
+	"regexp"
 )
 
 // New creates a new backend for OSS remote state.
@@ -334,6 +336,11 @@ func (b *Backend) configure(ctx context.Context) error {
 	}
 	options = append(options, oss.UserAgent(fmt.Sprintf("%s/%s", TerraformUA, TerraformVersion)))
 
+	proxyUrl := getHttpProxyUrl()
+	if proxyUrl != nil {
+		options = append(options, oss.Proxy(proxyUrl.String()))
+	}
+
 	client, err := oss.New(endpoint, accessKey, secretKey, options...)
 	b.ossClient = client
 	otsEndpoint := d.Get("tablestore_endpoint").(string)
@@ -610,3 +617,20 @@ func getAuthCredentialByEcsRoleName(ecsRoleName string) (accessKey, secretKey, t
 
 	return accessKeyId.(string), accessKeySecret.(string), securityToken.(string), nil
 }
+
+func getHttpProxyUrl() *url.URL {
+	for _, v := range []string{"HTTPS_PROXY", "https_proxy", "HTTP_PROXY", "http_proxy"} {
+		value := strings.Trim(os.Getenv(v), " ")
+		if value != "" {
+			if !regexp.MustCompile(`^http(s)?://`).MatchString(value) {
+				value = fmt.Sprintf("https://%s", value)
+			}
+			proxyUrl, err := url.Parse(value)
+			if err == nil {
+				return proxyUrl
+			}
+			break
+		}
+	}
+	return nil
+}