fix: interpolate multiple outputs from multiple cf stacks (#9)

adikari · Nov 21, 2022 · f467bbc · f467bbc
1 parent 9d9a500
commit f467bbc
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Showing 3 changed files with 23 additions and 5 deletions.
diff --git a/aws/cloudformation.go b/aws/cloudformation.go
@@ -39,6 +39,24 @@ func (c *Cloudformation) GetOutput(stackname string) (map[string]string, error)
 	return result, nil
 }
 
+func (c *Cloudformation) GetOutputs(stacknames []string) (map[string]string, error) {
+	result := map[string]string{}
+
+	for _, stackname := range stacknames {
+		outputs, err := c.GetOutput(stackname)
+
+		if err != nil {
+			continue
+		}
+
+		for key, value := range outputs {
+			result[key] = value
+		}
+	}
+
+	return result, nil
+}
+
 func NewCloudformation() Cloudformation {
 	if cfClient == nil {
 		retryer := client.DefaultRetryer{

diff --git a/config/config.go b/config/config.go
@@ -178,8 +178,7 @@ func loadVariables(c Config, rc rawConfig) (map[string]string, error) {
 	// add cloudformation outputs to variables available for interpolation
 	if len(c.Stacks) > 0 {
 		cf := aws.NewCloudformation()
-		// TODO: support multiple cf stack outputs
-		outputs, err := cf.GetOutput(c.Stacks[0])
+		outputs, err := cf.GetOutputs(c.Stacks)
 
 		if err != nil {
 			return nil, err

diff --git a/example/safebox.yml b/example/safebox.yml
@@ -3,18 +3,19 @@ provider: ssm
 
 cloudformation-stacks:
   - "{{.stage}}-shared-infra-SharedInfraServerless"
+  - "{{.stage}}-user-debug-stack"
 
 config:
   defaults:
     DB_NAME: "database name updated"
-    API_ENDPOINT: "{{.internalDomainName}}"
+    CF_OUTPUT_API_ENDPOINT: "{{.internalDomainName}}"
     NEW: "endpoint-{{.stage}}"
     NEW2: "endpoint updated"
     NEW3: "endpoint updated"
     AWS_REGION: "{{.region}}"
     AWS_ACCOUNT: "{{.account}}"
-    NEW6: "endpoint updated"
-    NEW7: "endpoint updated"
+    CF_OUTPUT_BUCKET_ARN: "{{.BucketArn}}"
+    CF_OUTPUT_ENDPOINT: "{{.Endpoint}}"
 
   prod:
     DB_NAME: "production db name"