Add an Azure entry

This contains just a URL for now. It's what RHCOS does
today and will likely be doing so for the near future.
For FCOS we may end up doing something similar too.

Closes: coreos#13

release/release.go

@@ -49,7 +49,7 @@ type Arch struct {
 type Media struct {
 	Aliyun       *PlatformBase `json:"aliyun"`
 	Aws          *PlatformAws  `json:"aws"`
-	Azure        *PlatformBase `json:"azure"`
+	Azure        *PlatformAzure `json:"azure"`
 	Digitalocean *PlatformBase `json:"digitalocean"`
 	Exoscale     *PlatformBase `json:"exoscale"`
 	Gcp          *PlatformGcp  `json:"gcp"`
@@ -105,3 +105,14 @@ type GcpImage struct {
 	Family  string `json:"family,omitempty"`
 	Name    string `json:"name,omitempty"`
 }
+
+// PlatformAzure represents an Azure cloud image
+type PlatformAzure struct {
+	PlatformBase
+	Image *AzureImage `json:"image"`
+}
+
+// AzureImage represents an Azure cloud image
+type AzureImage struct {
+	URL  string `json:"url,omitempty"`
+}

release/translate.go

@@ -57,12 +57,12 @@ func (releaseArch *Arch) toStreamArch(rel *Release) stream.Arch {
 			Formats: mapFormats(releaseArch.Media.Azure.Artifacts),
 		}
 
-		// Not enabled right now
-		// if az := releaseArch.Media.Azure.Images; az != nil && az.Global != nil && az.Global.Image != nil {
-		// 	azureImage := StreamCloudImage{}
-		// 	azureImage.Image = fmt.Sprintf("Fedora:CoreOS:%s:latest", rel.Stream)
-		// 	cloudImages.Azure = &azureImage
-		// }
+		azi := releaseArch.Media.Azure.Image
+		if azi != nil {
+			cloudImages.Azure = &stream.AzureImage{
+				URL:  azi.URL,
+			}
+		}
 	}
 
 	if releaseArch.Media.Aliyun != nil {

stream/stream.go

@@ -47,6 +47,7 @@ type Artifact struct {
 type Images struct {
 	Aws *AwsImage `json:"aws,omitempty"`
 	Gcp *GcpImage `json:"gcp,omitempty"`
+	Azure *AzureImage `json:"azure,omitempty"`
 }
 
 // AwsImage represents an image across all AWS regions
@@ -66,3 +67,8 @@ type GcpImage struct {
 	Family  string `json:"family,omitempty"`
 	Name    string `json:"name,omitempty"`
 }
+
+// AzureImage represents an Azure cloud image
+type AzureImage struct {
+	URL  string `json:"url,omitempty"`
+}