Publish changes to SNS (#1)

.github/workflows/push.yml

@@ -23,7 +23,7 @@ jobs:
           jq -V
 
       - name: Run it
-        run: go run main.go
+        run: go run main.go -- generate
         env:
           AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
           AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}

.github/workflows/upstream.yml

@@ -26,7 +26,7 @@ jobs:
           jq -V
 
       - name: Run it
-        run: go run main.go
+        run: go run main.go -- generate
         env:
           AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
           AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
@@ -45,3 +45,5 @@ jobs:
 
           remote_repo="https://${GITHUB_ACTOR}:${GITHUB_TOKEN}@github.com/${GITHUB_REPOSITORY}.git"
           git push "${remote_repo}" HEAD:master
+
+          go run main.go -- publish

generator/publish_sns.go

@@ -0,0 +1,22 @@
+package generator
+
+import (
+	"context"
+	"fmt"
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/aws/session"
+	"github.com/aws/aws-sdk-go/service/sns"
+)
+
+func Publish() {
+	sess := session.Must(session.NewSession())
+	api := sns.New(sess)
+
+	_, err := api.PublishWithContext(context.Background(), &sns.PublishInput{
+		Message:  aws.String("something changed"), // TODO: implement
+		TopicArn: aws.String("arn:aws:sns:us-east-1:258739955926:trackiam"),
+	})
+	if err != nil {
+		panic(fmt.Sprintf("%+v", err))
+	}
+}

generator/stats.go

@@ -13,6 +13,9 @@ import (
 func printStats(acts actions, policies []*policyFile) ([]byte, error) {
 	tmpl, err := template.New("").Parse(`# AWS IAM by the numbers
 
+Changes (i.e. new IAM actions, new AWS APIs, new managed policies, modifications, etc)
+are published to a public SNS topic: {{ .Backtick }}arn:aws:sns:us-east-1:258739955926:trackiam{{ .Backtick }}
+
 * Unique services: {{ .ServiceCount }}
 * Unique actions: {{ .ActionCount }}
 * Managed policies: {{ .PolicyCount }}

main.go

@@ -1,8 +1,27 @@
 package main
 
-import "github.com/glassechidna/trackiam/generator"
+import (
+	"fmt"
+	"github.com/glassechidna/trackiam/generator"
+	"os"
+)
 
 func main() {
-	generator.Generate()
+	if len(os.Args) == 1 {
+		usage()
+	}
+
+	switch os.Args[2] {
+	case "generate":
+		generator.Generate()
+	case "publish":
+		generator.Publish()
+	default:
+		usage()
+	}
 }
 
+func usage() {
+	fmt.Printf("usage: %s generate|publish\n", os.Args[0])
+	os.Exit(1)
+}