From 9d929638e073dec6a94adf4654376b878982e90a Mon Sep 17 00:00:00 2001
From: Ben Meier <ben.meier@humanitec.com>
Date: Thu, 12 Sep 2024 16:44:39 +0100
Subject: [PATCH] fix: adds 2 http retries to humanitec client requests

---
 go.mod                        |  1 +
 go.sum                        |  2 ++
 internal/provider/provider.go | 29 ++++++++++++++++++++++-------
 3 files changed, 25 insertions(+), 7 deletions(-)

diff --git a/go.mod b/go.mod
index 68cdff5..e05b9d9 100644
--- a/go.mod
+++ b/go.mod
@@ -13,6 +13,7 @@ require (
 	github.com/hashicorp/terraform-plugin-log v0.9.0
 	github.com/hashicorp/terraform-plugin-sdk/v2 v2.34.0
 	github.com/humanitec/humanitec-go-autogen v0.0.0-20240620130303-6979d29fd1fa
+	github.com/justinrixx/retryhttp v1.0.1
 	github.com/stretchr/testify v1.9.0
 	sigs.k8s.io/yaml v1.4.0
 )
diff --git a/go.sum b/go.sum
index 41a6dbf..8084f76 100644
--- a/go.sum
+++ b/go.sum
@@ -136,6 +136,8 @@ github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99/go.mod h1:1lJo3i
 github.com/jhump/protoreflect v1.15.1 h1:HUMERORf3I3ZdX05WaQ6MIpd/NJ434hTp5YiKgfCL6c=
 github.com/jhump/protoreflect v1.15.1/go.mod h1:jD/2GMKKE6OqX8qTjhADU1e6DShO+gavG9e0Q693nKo=
 github.com/juju/gnuflag v0.0.0-20171113085948-2ce1bb71843d/go.mod h1:2PavIy+JPciBPrBUjwbNvtwB6RQlve+hkpll6QSNmOE=
+github.com/justinrixx/retryhttp v1.0.1 h1:hTCOBTOcmzR3/W7weMB2YBOl1LlQrqVPIZPAf40p+14=
+github.com/justinrixx/retryhttp v1.0.1/go.mod h1:vGs79/0Ut0//fmOGS9HAgI/IbZS6oFV3jFOTCxGEXt0=
 github.com/kevinburke/ssh_config v1.2.0 h1:x584FjTGwHzMwvHx18PXxbBVzfnxogHaAReU4gf13a4=
 github.com/kevinburke/ssh_config v1.2.0/go.mod h1:CT57kijsi8u/K/BOFA39wgDQJ9CxiF4nAY/ojJ6r6mM=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
diff --git a/internal/provider/provider.go b/internal/provider/provider.go
index 90529e0..0a65643 100644
--- a/internal/provider/provider.go
+++ b/internal/provider/provider.go
@@ -3,14 +3,18 @@ package provider
 import (
 	"context"
 	"crypto/tls"
+	"net"
 	"net/http"
 	"os"
+	"time"
 
 	"github.com/hashicorp/terraform-plugin-framework/datasource"
 	"github.com/hashicorp/terraform-plugin-framework/provider"
 	"github.com/hashicorp/terraform-plugin-framework/provider/schema"
 	"github.com/hashicorp/terraform-plugin-framework/resource"
 	"github.com/hashicorp/terraform-plugin-framework/types"
+	"github.com/justinrixx/retryhttp"
+
 	"github.com/humanitec/humanitec-go-autogen"
 )
 
@@ -170,16 +174,27 @@ func (p *HumanitecProvider) Configure(ctx context.Context, req provider.Configur
 		// Not returning early allows the logic to collect all errors.
 	}
 
-	var doer *http.Client
+	baseTransport := &http.Transport{
+		Proxy: http.ProxyFromEnvironment,
+		DialContext: (&net.Dialer{
+			Timeout:   30 * time.Second,
+			KeepAlive: 30 * time.Second,
+		}).DialContext,
+		ForceAttemptHTTP2:     true,
+		MaxIdleConns:          100,
+		IdleConnTimeout:       90 * time.Second,
+		TLSHandshakeTimeout:   10 * time.Second,
+		ExpectContinueTimeout: 1 * time.Second,
+	}
+
 	if data.DisableSSLCertificateVerification.ValueBool() {
-		tr := &http.Transport{
-			TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
-		}
-		doer = &http.Client{Transport: tr}
-	} else {
-		doer = &http.Client{}
+		baseTransport.TLSClientConfig = &tls.Config{InsecureSkipVerify: true}
 	}
 
+	doer := &http.Client{
+		Timeout:   time.Minute,
+		Transport: retryhttp.New(retryhttp.WithTransport(baseTransport)),
+	}
 	client, err := NewHumanitecClient(apiPrefix, token, p.version, doer)
 	if err != nil {
 		resp.Diagnostics.AddError("Unable to create Humanitec client", err.Error())