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https://github.com/Sea-Haven-Industries/seahaven-org-baseline.git
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4d3c846b88
* feat(prod): add seahaven-prod DynamoDB CMK and site-alerts alarm-topic stacks Provisions the two shared dependencies procurement-ingest imports by name, ahead of its migration from mgmt to seahaven-prod: - dynamodb-cmk-prod: second DynamoDbCmkStack instance (same stack name, prod account) creating alias/seahaven-dynamodb + the /seahaven/dynamodb/cmk-arn SSM param. Adds a cross-account key-policy statement so the mgmt seahaven-slack-bot roles can keep reading the CMK-encrypted purchase-orders table after it moves (ViaService + PrincipalArn-wildcard scoped; identity-policy half lands in the slack-bot repo's cutover PR). - alarm-topic-prod: codified site-alerts SNS topic + seahaven-alarm-topics CMK with the cloudwatch.amazonaws.com publish grant (mirrors the working mgmt pattern; mgmt's topic remains CLI-managed debt). - deploy.yaml: both appended to the deploy-prod job's explicit stack list (SH-ORG-005 rule: unlisted stacks silently never deploy). * fix(scripts): account-id assertion in cfn-stack-decommission; complete the aws-cdk-lib 2.262.0 bump (patched brace-expansion); document CMK cutover trap - cfn-stack-decommission.sh: --account-id is now REQUIRED and asserted against sts get-caller-identity before anything runs. Stack names are no longer org-unique (seahaven-dynamodb-cmk now exists in mgmt AND prod), so a name-only lookup under the wrong ambient profile could report or delete the wrong account's stack (security-review LOGIC-001). - package.json/lock: PR #56's bump-for-patched-brace-expansion landed the commit title but not the pin; package.json still said 2.261.0 and the lockfile still resolved brace-expansion 5.0.6 (GHSA-3jxr-9vmj-r5cp HIGH, blocking the pre-commit scanner). Pin 2.262.0 and regenerate; npm audit now clean. - bin/app.ts comments: slack-bot cutover MUST grant the PROD key ARN, never the account-local mgmt SSM param (LOGIC-005); failed-first-create orphan CMK recovery note (LOGIC-004). * refactor(prod): drop cross-account CMK grant (slack-bot decommissioned 2026-07-23) The AllowMgmtSlackBotReadViaDynamoDb key-policy statement targeted the seahaven-slack-bot roles, which were decommissioned 2026-07-23. Its successor sh-mcp is undeployed and uses same-account DynamoDB access, so no cross-account reader of the CMK-encrypted purchase-orders table exists. The prod CMK + SSM param + alarm-topic stacks remain (procurement-ingest still imports them). Add a scoped cross-account grant if/when a real cross-account consumer deploys.
68 lines
2.9 KiB
TypeScript
68 lines
2.9 KiB
TypeScript
import * as cdk from "aws-cdk-lib";
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import * as kms from "aws-cdk-lib/aws-kms";
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import * as iam from "aws-cdk-lib/aws-iam";
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import * as sns from "aws-cdk-lib/aws-sns";
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import { Construct } from "constructs";
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/**
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* Shared CloudWatch-alarm SNS topic (`site-alerts`) + its CMK for a member
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* account. First tenant: seahaven-prod, for the procurement-ingest migration
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* (its stacks import the topic by constructed ARN `site-alerts` in-account).
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*
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* mgmt's equivalent topic is unmanaged (created via CLI, acknowledged debt in
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* cis-monitoring.ts) - this stack codifies the same working pattern instead of
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* replicating the debt:
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* - CMK `alias/seahaven-alarm-topics`, NOT alias/aws/sns: the AWS-managed SNS
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* key's policy cannot grant cloudwatch.amazonaws.com, so alarms silently
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* fail to publish through it.
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* - Key policy grants cloudwatch.amazonaws.com only (SourceAccount-scoped).
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* Subscribers (AWS Chatbot -> Slack) need no KMS grant: SNS decrypts at
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* delivery. Verified live by mgmt's site-alerts + Chatbot wiring.
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* - Chatbot workspace auth + channel config are console-only (per-account)
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* and deliberately out of scope here; verify delivery post-deploy with
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* `aws sns publish` + a Slack message check.
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*/
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export class AlarmTopicStack extends cdk.Stack {
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public readonly topic: sns.Topic;
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constructor(scope: Construct, id: string, props?: cdk.StackProps) {
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super(scope, id, props);
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const alarmTopicKey = new kms.Key(this, "AlarmTopicKey", {
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alias: "seahaven-alarm-topics",
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description:
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"SSE for SNS alarm topics; grants CloudWatch alarms publish-side usage",
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enableKeyRotation: true,
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removalPolicy: cdk.RemovalPolicy.RETAIN,
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});
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// GenerateDataKey* is the publish-side envelope-encryption call CloudWatch
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// makes when writing to an encrypted topic; Decrypt covers retried
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// deliveries re-reading its own envelope. Both are required for alarms to
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// publish at all.
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alarmTopicKey.addToResourcePolicy(
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new iam.PolicyStatement({
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sid: "AllowCloudWatchAlarmsUse",
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principals: [new iam.ServicePrincipal("cloudwatch.amazonaws.com")],
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actions: ["kms:GenerateDataKey*", "kms:Decrypt", "kms:DescribeKey"],
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resources: ["*"],
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conditions: {
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StringEquals: { "aws:SourceAccount": this.account },
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},
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}),
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);
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this.topic = new sns.Topic(this, "SiteAlertsTopic", {
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topicName: "site-alerts",
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displayName: "Sea Haven operational alarms",
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masterKey: alarmTopicKey,
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});
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cdk.Tags.of(this).add("Project", "account-baseline");
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cdk.Tags.of(this).add("Owner", "adam@seahavenind.com");
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cdk.Tags.of(this).add("Environment", "prod");
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cdk.Tags.of(this).add("ManagedBy", "cdk");
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new cdk.CfnOutput(this, "SiteAlertsTopicArn", { value: this.topic.topicArn });
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new cdk.CfnOutput(this, "AlarmTopicKeyArn", { value: alarmTopicKey.keyArn });
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}
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}
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