feat(tags): make them optional and propagateAtLaunch (#10)

Sources/App/ASG/ASGClient.swift

@@ -18,7 +18,7 @@ struct ASGClient<Provider: ASGProvider>: ASGClientRepresentable {
     let updatedTags = tags.map {
       AutoScaling.Tag(
         key: $0.key,
-        propagateAtLaunch: $0.propagateAtLaunch ?? true,
+        propagateAtLaunch: $0.propagateAtLaunch,
         resourceId: $0.resourceId,
         resourceType: $0.resourceType ?? "auto-scaling-group",
         value: $0.value)

Sources/App/Hulk.swift

@@ -44,12 +44,14 @@ struct Hulk {
     let tags = asgNames.reduce([AutoScaling.Tag]()) { finalResult, asg in
       guard let nodePool = clusterInfo.nodePools[asg.0] else { return finalResult }
 
-      let allTags = clusterInfo.commonTags + nodePool.tags
+      let allTags = (clusterInfo.commonTags ?? []) + (nodePool.tags ?? [])
 
       logger.debug("tags to add to node \(nodePool.name): \(allTags)")
 
       return finalResult + allTags.flatMap { tag in
-        asg.1.map { AutoScaling.Tag(key: tag.name, resourceId: $0, value: tag.value) }
+        asg.1.map {
+          AutoScaling.Tag(key: tag.name, propagateAtLaunch: tag.propagateAtLaunch, resourceId: $0, value: tag.value)
+        }
       }
     }
 

Sources/CloudFormation/Codable/Tag+Codable.swift

@@ -5,14 +5,16 @@ extension Tag: Codable {
   enum CodingKeys: String, CodingKey {
     case name = "Name"
     case value = "Value"
+    case propagateAtLaunch = "PropagateAtLaunch"
   }
 
   public init(from decoder: Decoder) throws {
     let container = try decoder.container(keyedBy: CodingKeys.self)
 
     self.init(
       name: try container.decode(String.self, forKey: .name),
-      value: try container.decode(String.self, forKey: .value)
+      value: try container.decode(String.self, forKey: .value),
+      propagateAtLaunch: try container.decode(Bool.self, forKey: .propagateAtLaunch)
     )
   }
 

Sources/Models/ClusterNodesTags.swift

@@ -2,7 +2,7 @@ import Foundation
 
 public struct ClusterNodesTags {
   public let clusterName: String
-  public let commonTags: [Tag]
+  public let commonTags: [Tag]?
   public let nodePools: [NodePool]
 
   public init(clusterName: String, commonTags: [Tag], nodePools: [NodePool]) {

Sources/Models/NodePool.swift

@@ -2,7 +2,7 @@ import Foundation
 
 public struct NodePool {
   public let name: String
-  public let tags: [Tag]
+  public let tags: [Tag]?
 
   public init(name: String, tags: [Tag]) {
     self.name = name

Sources/Models/Tag.swift

@@ -3,9 +3,11 @@ import Foundation
 public struct Tag {
   public let name: String
   public let value: String
+  public let propagateAtLaunch: Bool
 
-  public init(name: String, value: String) {
+  public init(name: String, value: String, propagateAtLaunch: Bool) {
     self.name = name
     self.value = value
+    self.propagateAtLaunch = propagateAtLaunch
   }
 }