feat: add support for region setting changes

Author: sgtoj

fixtures/samples.json

@@ -442,52 +442,69 @@
     }
   },
   {
-  "version": "0",
-  "id": "d415609e-5f35-d9a2-76d1-613683e4e024",
-  "detail-type": "Backup Vault State Change",
-  "source": "aws.backup",
-  "account": "1112233445566",
-  "time": "2020-06-24T23:18:19Z",
-  "region": "us-west-2",
-  "resources": [
-    "arn:aws:backup:us-west-2:1112233445566:backup-vault:d8864642-155c-4283-a168-a04f40e12c97"
-  ],
-  "detail": {
-    "backupVaultName": "d8864642-155c-4283-a168-a04f40e12c97",
-    "state": "CREATED"
-  }
-},
+    "version": "0",
+    "id": "d415609e-5f35-d9a2-76d1-613683e4e024",
+    "detail-type": "Backup Vault State Change",
+    "source": "aws.backup",
+    "account": "1112233445566",
+    "time": "2020-06-24T23:18:19Z",
+    "region": "us-west-2",
+    "resources": [
+      "arn:aws:backup:us-west-2:1112233445566:backup-vault:d8864642-155c-4283-a168-a04f40e12c97"
+    ],
+    "detail": {
+      "backupVaultName": "d8864642-155c-4283-a168-a04f40e12c97",
+      "state": "CREATED"
+    }
+  },
   {
-  "version": "0",
-  "id": "1a2b3cd4-5e6f-7g8h-9i0j-123456k7l890",
-  "detail-type": "Backup Vault State Change",
-  "source": "aws.backup",
-  "account": "1112233445566",
-  "time": "2020-06-24T23:18:19Z",
-  "region": "us-west-2",
-  "resources": [
-    "arn:aws:backup:us-west-2:1112233445566:backup-vault:nameOfTestBackup"
-  ],
-  "detail": {
-    "backupVaultName": "vaultName",
-    "state": "MODIFIED",
-    "isLocked": "true"
-  }
-},
+    "version": "0",
+    "id": "1a2b3cd4-5e6f-7g8h-9i0j-123456k7l890",
+    "detail-type": "Backup Vault State Change",
+    "source": "aws.backup",
+    "account": "1112233445566",
+    "time": "2020-06-24T23:18:19Z",
+    "region": "us-west-2",
+    "resources": [
+      "arn:aws:backup:us-west-2:1112233445566:backup-vault:nameOfTestBackup"
+    ],
+    "detail": {
+      "backupVaultName": "vaultName",
+      "state": "MODIFIED",
+      "isLocked": "true"
+    }
+  },
   {
-  "version": "0",
-  "id": "344bccc1-6d2e-da93-3adf-b3f82460294d",
-  "detail-type": "Backup Vault State Change",
-  "source": "aws.backup",
-  "account": "1112233445566",
-  "time": "2020-06-22T02:42:37Z",
-  "region": "us-west-2",
-  "resources": [
-    "arn:aws:backup:us-west-2:1112233445566:backup-vault:e8189629-1f8e-4ed2-af7d-b32415d04db1"
-  ],
-  "detail": {
-    "backupVaultName": "e8189629-1f8e-4ed2-af7d-b32415d04db1",
-    "state": "DELETED"
+    "version": "0",
+    "id": "344bccc1-6d2e-da93-3adf-b3f82460294d",
+    "detail-type": "Backup Vault State Change",
+    "source": "aws.backup",
+    "account": "1112233445566",
+    "time": "2020-06-22T02:42:37Z",
+    "region": "us-west-2",
+    "resources": [
+      "arn:aws:backup:us-west-2:1112233445566:backup-vault:e8189629-1f8e-4ed2-af7d-b32415d04db1"
+    ],
+    "detail": {
+      "backupVaultName": "e8189629-1f8e-4ed2-af7d-b32415d04db1",
+      "state": "DELETED"
+    }
+  },
+  {
+    "version": "0",
+    "id": "e7ed82ba-4955-4de5-10d6-dbafcfb68b4f",
+    "detail-type": "Region Setting State Change",
+    "source": "aws.backup",
+    "account": "1112233445566",
+    "time": "2020-06-24T22:55:03Z",
+    "region": "us-west-2",
+    "resources": [],
+    "detail": {
+      "modifiedAt": "2020-06-24T22:54:57.161Z",
+      "ResourceTypeOptInPreference": {
+        "Aurora": true
+      },
+      "state": "MODIFIED"
+    }
   }
-}
 ]

internal/app/app.go

@@ -33,6 +33,8 @@ func (a *App) ParseEvent(e awsEvent.CloudWatchEvent) (events.StateChangeEvent, e
 		return events.NewBackupVaultStateChange(e.Detail)
 	case "Copy Job State Change":
 		return events.NewCopyJobStateChange(e.Detail)
+	case "Region Setting State Change":
+		return events.NewRegionSettingStateChange(e.Detail)
 	case "Restore Job State Change":
 		return events.NewRestoreJobStateChange(e.Detail)
 	default:

internal/events/region-setting.go

@@ -0,0 +1,48 @@
+package events
+
+import (
+	"encoding/json"
+	"fmt"
+
+	"github.com/slack-go/slack"
+)
+
+type RegionSettingStateChange struct {
+	StateChangeEvent
+	State         string `json:"state"`
+	StatusMessage string `json:"statusMessage"`
+	Raw           string `json:"-"`
+}
+
+func (sce *RegionSettingStateChange) SlackMessage() (slack.MsgOption, slack.MsgOption) {
+	var blocks []slack.Block
+
+	header := slack.NewHeaderBlock(slack.NewTextBlockObject("plain_text", "Region Setting Change", false, false))
+	blocks = append(blocks, header)
+
+	var details []*slack.TextBlockObject
+	details = append(details, slack.NewTextBlockObject("mrkdwn", fmt.Sprintf("*State*\n%s", sce.State), false, false))
+	blocks = append(blocks, slack.NewSectionBlock(nil, details, nil))
+
+	if sce.StatusMessage != "" {
+		desc := slack.NewSectionBlock(
+			slack.NewTextBlockObject("mrkdwn", fmt.Sprintf("```\n%s\n```", sce.StatusMessage), false, false),
+			nil, nil,
+		)
+		blocks = append(blocks, desc)
+	}
+	return slack.MsgOptionText(sce.StatusMessage, false), slack.MsgOptionBlocks(blocks...)
+}
+
+func (sce *RegionSettingStateChange) IsAlertable() bool {
+	return true
+}
+
+func NewRegionSettingStateChange(raw json.RawMessage) (*RegionSettingStateChange, error) {
+	var sce RegionSettingStateChange
+	if err := json.Unmarshal(raw, &sce); err != nil {
+		return &RegionSettingStateChange{}, err
+	}
+	sce.StatusMessage = "AWS Backup service region settings changed. Please confirm it was intended."
+	return &sce, nil
+}