add configurable pricing endpoint

Signed-off-by: Ajay Tripathy <4tripathy@gmail.com>

pkg/cloud/awsprovider.go

@@ -766,6 +766,10 @@ func (aws *AWS) getRegionPricing(nodeList []*v1.Node) (*http.Response, string, e
 
 	pricingURL += "index.json"
 
+	if env.GetAWSPricingURL() != "" { // Allow override of pricing URL
+		pricingURL = env.GetAWSPricingURL()
+	}
+
 	log.Infof("starting download of \"%s\", which is quite large ...", pricingURL)
 	resp, err := http.Get(pricingURL)
 	if err != nil {

pkg/env/costmodelenv.go

@@ -15,6 +15,7 @@ const (
 	AWSAccessKeyIDEnvVar     = "AWS_ACCESS_KEY_ID"
 	AWSAccessKeySecretEnvVar = "AWS_SECRET_ACCESS_KEY"
 	AWSClusterIDEnvVar       = "AWS_CLUSTER_ID"
+	AWSPricingURL            = "AWS_PRICING_URL"
 
 	KubecostNamespaceEnvVar        = "KUBECOST_NAMESPACE"
 	PodNameEnvVar                  = "POD_NAME"
@@ -206,6 +207,11 @@ func GetAWSClusterID() string {
 	return Get(AWSClusterIDEnvVar, "")
 }
 
+// GetAWSPricingURL returns an optional alternative URL to fetch AWS pricing data from; for use in airgapped environments
+func GetAWSPricingURL() string {
+	return Get(AWSPricingURL, "")
+}
+
 // GetKubecostNamespace returns the environment variable value for KubecostNamespaceEnvVar which
 // represents the namespace the cost model exists in.
 func GetKubecostNamespace() string {