Adding duration estimate to forecast command

.gitignore

@@ -23,6 +23,7 @@ go.work
 .vscode/
 main
 rain
+parse-perf
 local/
 .idea
 

cft/graph/graph.go

@@ -94,8 +94,8 @@ func (g *Graph) String() string {
 	out := strings.Builder{}
 
 	for _, left := range g.order {
+		out.WriteString(fmt.Sprintf("%s:\n", left))
 		if len(g.nodes[left]) > 0 {
-			out.WriteString(fmt.Sprintf("%s:\n", left))
 			for right := range g.nodes[left] {
 				out.WriteString(fmt.Sprintf("- %s\n", right))
 			}

cft/graph/graph_test.go

@@ -17,11 +17,14 @@ Parameters:
 Resources:
   Bucket:
     Type: AWS::S3::Bucket
+    DependsOn: LogBucket
     Properties:
       BucketName: !Ref Name
       Tags:
         - Key: Account
         - Value: !Ref AWS::AccountId
+  LogBucket:
+    Type: AWS::S3::Bucket
 Outputs:
   BucketName:
     Value: !Ref Bucket
@@ -52,6 +55,7 @@ func Example_nodes() {
 	// Output:
 	// Parameters/AWS::AccountId
 	// Parameters/Name
+	// Resources/LogBucket
 	// Resources/Bucket
 	// Outputs/BucketArn
 	// Outputs/BucketName
@@ -63,7 +67,7 @@ func Example_get() {
 	fmt.Println(g.Get(graph.Node{"Outputs", "BucketName"}))
 	// Output:
 	// []
-	// [Parameters/AWS::AccountId Parameters/Name]
+	// [Parameters/AWS::AccountId Parameters/Name Resources/LogBucket]
 	// [Resources/Bucket]
 }
 

cft/graph/util.go

@@ -4,6 +4,8 @@ import (
 	"fmt"
 	"regexp"
 	"strings"
+
+	"github.com/aws-cloudformation/rain/internal/config"
 )
 
 var subRe = regexp.MustCompile(`\$\{([^!].+?)\}`)
@@ -17,6 +19,17 @@ func findRefs(t map[string]interface{}) []string {
 
 	for key, value := range t {
 		switch key {
+		case "DependsOn":
+			switch v := value.(type) {
+			case string:
+				refs = append(refs, v)
+			case []interface{}:
+				for _, d := range v {
+					refs = append(refs, d.(string))
+				}
+			default:
+				config.Debugf("invalid DependsOn: %v, %v", key, value)
+			}
 		case "Ref":
 			refs = append(refs, value.(string))
 		case "Fn::GetAtt":

internal/cmd/deploy/deploy.go

@@ -92,6 +92,10 @@ YAML:
 			panic(err)
 		}
 
+		// Figure out how long we thing the stack will take to execute
+		//totalSeconds := forecast.PredictTotalEstimate(template, stackExists)
+		// TODO - Wait until the forecast command is GA and add this to output
+
 		// Create change set
 		spinner.Push("Creating change set")
 		changeSetName, createErr := cfn.CreateChangeSet(template, dc.Params, dc.Tags, stackName, roleArn)