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import { SendRawEmailCommand, SESClient } from "@aws-sdk/client-ses";
import { randomUUID } from "crypto";
import { getSecret } from "shared-utils";
import {
AttachmentArchiveIntegrityRunResult,
AttachmentArchiveIntegrityRunSummary,
} from "../attachment-archive/integrity-types";
import { getJsonObject, putJsonObject } from "../attachment-archive/storage";
const awsRegion = process.env.region || process.env.AWS_REGION;
const archiveBucketClient = new S3Client({ region: awsRegion });
const sesClient = new SESClient({ region: awsRegion });
type NotificationMode = "discrepancy" | "failure";
type IntegrityNotificationEvent = {
mode: NotificationMode;
runResult?: Partial<AttachmentArchiveIntegrityRunResult> & { summaryKey?: string };
error?: unknown;
input?: {
runResult?: Partial<AttachmentArchiveIntegrityRunResult> & { summaryKey?: string };
error?: unknown;
};
};
type RecipientConfig = {
sourceEmailAddress: string;
sourceEmailHeader: string;
toEmailAddresses: string[];
toEmailHeaders: string[];
};
type ParsedEmailAddress = {
email: string;
formatted: string;
};
type ParsedFailurePayload = {
message: string;
summaryKey?: string;
runId?: string;
stage?: string;
reportBucketName?: string;
};
function getIntegrityStageName() {
const stage = process.env.STAGE_NAME?.trim();
if (!stage) {
throw new Error("ATTACHMENT_ARCHIVE_INTEGRITY_STAGE_NAME must be defined via STAGE_NAME");
}
return stage;
}
function getStorageConfig() {
const writeBucketName = process.env.ATTACHMENT_ARCHIVE_BUCKET_NAME;
Iif (!writeBucketName) {
throw new Error("ATTACHMENT_ARCHIVE_BUCKET_NAME must be defined");
}
const reportPrefix = (
process.env.ATTACHMENT_ARCHIVE_INTEGRITY_REPORT_PREFIX || "archive-integrity"
).replace(/^\/+|\/+$/g, "");
const stage = getIntegrityStageName();
return {
stage,
reportPrefix,
writeBucketName,
};
}
function getEmailAddressLookupSecretName() {
const emailAddressLookupSecretName = (
process.env.emailAddressLookupSecretName || "emailAddresses"
).trim();
Iif (!emailAddressLookupSecretName) {
throw new Error("emailAddressLookupSecretName must be defined");
}
return emailAddressLookupSecretName;
}
function parseAddressEntries(value: unknown) {
Eif (Array.isArray(value)) {
return value.map((entry) => String(entry || "").trim()).filter((entry) => Boolean(entry));
}
if (typeof value === "string") {
const trimmed = value.trim();
if (!trimmed) {
return [] as string[];
}
if (trimmed.startsWith("[") && trimmed.endsWith("]")) {
try {
const parsed = JSON.parse(trimmed);
if (Array.isArray(parsed)) {
return parsed
.map((entry) => String(entry || "").trim())
.filter((entry) => Boolean(entry));
}
} catch {
// Fall through to treat as a single address string.
}
}
return [trimmed];
}
return [] as string[];
}
function parseEmailAddress(address: string): ParsedEmailAddress | undefined {
const formatted = address.trim();
Iif (!formatted) {
return undefined;
}
const angleMatch = formatted.match(/<([^<>]+)>/);
const email = angleMatch ? angleMatch[1].trim() : formatted.trim().replace(/^"|"$/g, "");
const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
Iif (!emailRegex.test(email)) {
return undefined;
}
return {
email,
formatted,
};
}
function parseEmailAddressList(addresses: string[]) {
const parsed: ParsedEmailAddress[] = [];
const seenEmails = new Set<string>();
for (const address of addresses) {
const parsedAddress = parseEmailAddress(address);
Iif (!parsedAddress) {
continue;
}
const normalized = parsedAddress.email.toLowerCase();
Iif (seenEmails.has(normalized)) {
continue;
}
seenEmails.add(normalized);
parsed.push(parsedAddress);
}
return parsed;
}
async function getRecipientConfig(): Promise<RecipientConfig> {
const rawSecret = await getSecret(getEmailAddressLookupSecretName());
const secret = JSON.parse(rawSecret || "{}") as {
sourceEmail?: unknown;
archiveAlerts?: unknown;
};
const sourceAddresses = parseEmailAddressList(parseAddressEntries(secret.sourceEmail));
const sourceEmail = sourceAddresses[0];
Iif (!sourceEmail) {
throw new Error("Integrity notification secret is missing sourceEmail");
}
const toAddresses = parseEmailAddressList(parseAddressEntries(secret.archiveAlerts));
Iif (toAddresses.length === 0) {
throw new Error("Integrity notification secret is missing archiveAlerts");
}
return {
sourceEmailAddress: sourceEmail.email,
sourceEmailHeader: sourceEmail.formatted,
toEmailAddresses: toAddresses.map((address) => address.email),
toEmailHeaders: toAddresses.map((address) => address.formatted),
};
}
function chunkBase64(value: string) {
return value.match(/.{1,76}/g)?.join("\n") || value;
}
function buildRawEmail({
sourceEmailHeader,
toEmailHeaders,
subject,
bodyText,
attachment,
}: {
sourceEmailHeader: string;
toEmailHeaders: string[];
subject: string;
bodyText: string;
attachment?: {
filename: string;
contentType: string;
body: string;
};
}) {
const boundary = `boundary_${randomUUID().replace(/-/g, "")}`;
const lines = [
`From: ${sourceEmailHeader}`,
`To: ${toEmailHeaders.join(", ")}`,
`Subject: ${subject}`,
"MIME-Version: 1.0",
`Content-Type: multipart/mixed; boundary="${boundary}"`,
"",
`--${boundary}`,
'Content-Type: text/plain; charset="UTF-8"',
"Content-Transfer-Encoding: 7bit",
"",
bodyText,
];
if (attachment) {
lines.push(
`--${boundary}`,
`Content-Type: ${attachment.contentType}; name="${attachment.filename}"`,
`Content-Disposition: attachment; filename="${attachment.filename}"`,
"Content-Transfer-Encoding: base64",
"",
chunkBase64(Buffer.from(attachment.body, "utf8").toString("base64")),
);
}
lines.push(`--${boundary}--`, "");
return lines.join("\n");
}
async function sendRawEmail({
sourceEmailAddress,
sourceEmailHeader,
toEmailAddresses,
toEmailHeaders,
subject,
bodyText,
attachment,
}: {
sourceEmailAddress: string;
sourceEmailHeader: string;
toEmailAddresses: string[];
toEmailHeaders: string[];
subject: string;
bodyText: string;
attachment?: {
filename: string;
contentType: string;
body: string;
};
}) {
const rawData = buildRawEmail({
sourceEmailHeader,
toEmailHeaders,
subject,
bodyText,
attachment,
});
await sesClient.send(
new SendRawEmailCommand({
RawMessage: {
Data: Buffer.from(rawData, "utf8"),
},
Source: sourceEmailAddress,
Destinations: toEmailAddresses,
}),
);
}
async function loadSummary({ bucketName, summaryKey }: { bucketName: string; summaryKey: string }) {
return await getJsonObject<AttachmentArchiveIntegrityRunSummary>({
client: archiveBucketClient,
bucket: bucketName,
key: summaryKey,
});
}
async function saveSummary({
bucketName,
summaryKey,
summary,
}: {
bucketName: string;
summaryKey: string;
summary: AttachmentArchiveIntegrityRunSummary;
}) {
await putJsonObject({
client: archiveBucketClient,
bucket: bucketName,
key: summaryKey,
body: summary,
});
}
async function loadCsvAttachment({ bucketName, key }: { bucketName: string; key: string }) {
const response = await archiveBucketClient.send(
new GetObjectCommand({
Bucket: bucketName,
Key: key,
}),
);
return (await response.Body?.transformToString()) || "";
}
function parseFailurePayload(error: unknown): ParsedFailurePayload {
const fallback = {
message: "Attachment archive integrity check failed unexpectedly.",
};
Iif (!error || typeof error !== "object") {
return fallback;
}
const top = error as { Cause?: unknown; Error?: unknown; message?: unknown };
const causeString =
typeof top.Cause === "string"
? top.Cause
: typeof top.message === "string"
? top.message
: undefined;
Iif (!causeString) {
return fallback;
}
try {
const parsedCause = JSON.parse(causeString) as { errorMessage?: string };
Iif (!parsedCause.errorMessage) {
return fallback;
}
try {
const parsedPayload = JSON.parse(parsedCause.errorMessage) as {
message?: string;
summaryKey?: string;
runId?: string;
stage?: string;
reportBucketName?: string;
};
return {
message: parsedPayload.message || fallback.message,
summaryKey: parsedPayload.summaryKey,
runId: parsedPayload.runId,
stage: parsedPayload.stage,
reportBucketName: parsedPayload.reportBucketName,
};
} catch {
return {
message: parsedCause.errorMessage,
};
}
} catch {
return {
message: causeString,
};
}
}
function createFailureSummary({
runId,
stage,
reportPrefix,
reportBucketName,
message,
}: {
runId: string;
stage: string;
reportPrefix: string;
reportBucketName: string;
message: string;
}): {
summary: AttachmentArchiveIntegrityRunSummary;
summaryKey: string;
} {
const runTimestamp = new Date().toISOString();
const date = new Date(runTimestamp);
const yyyy = date.getUTCFullYear();
const mm = `${date.getUTCMonth() + 1}`.padStart(2, "0");
const dd = `${date.getUTCDate()}`.padStart(2, "0");
const runReportPrefix = `${reportPrefix}/${stage}/runs/${yyyy}/${mm}/${dd}/${runId}`;
const summaryKey = `${runReportPrefix}/summary.json`;
const summary: AttachmentArchiveIntegrityRunSummary = {
runId,
stage,
runTimestamp,
status: "FAILED",
packagesScanned: 0,
packagesTotal: 0,
sectionsScanned: 0,
discrepancyCount: 0,
discrepancyTypeCounts: {},
exceptionCount: 0,
exceptionTypeCounts: {},
topDiscrepancyTypes: [],
reportBucketName,
reportPrefix: runReportPrefix,
checkpointKey: "",
discrepancyJsonKey: "",
discrepancyCsvKey: "",
exceptionJsonKey: "",
exceptionCsvKey: "",
discrepancyCsvFilename: "discrepancies.csv",
discrepancyCsvTruncated: false,
discrepancyCsvRowsIncluded: 0,
discrepancyCsvRowsTotal: 0,
notificationStatus: "PENDING",
errorMessage: message,
};
return { summary, summaryKey };
}
function buildDiscrepancyEmailBody(summary: AttachmentArchiveIntegrityRunSummary) {
const lines = [
"OneMAC archive integrity discrepancies were detected.",
"",
`Stage: ${summary.stage}`,
`Run timestamp: ${summary.runTimestamp}`,
`Packages scanned: ${summary.packagesScanned}`,
`Sections scanned: ${summary.sectionsScanned}`,
`Total discrepancies: ${summary.discrepancyCount}`,
];
if (summary.exceptionJsonKey || summary.exceptionCount > 0) {
lines.push(`Approved terminal exceptions: ${summary.exceptionCount}`);
}
lines.push("", "Top discrepancy types:");
Iif (summary.topDiscrepancyTypes.length === 0) {
lines.push("- none");
} else {
for (const typeCount of summary.topDiscrepancyTypes) {
lines.push(`- ${typeCount.type}: ${typeCount.count}`);
}
}
lines.push(
"",
"CSV discrepancy report is attached.",
summary.discrepancyCsvTruncated
? `Attachment was truncated (${summary.discrepancyCsvRowsIncluded}/${summary.discrepancyCsvRowsTotal} rows included).`
: `Attachment contains ${summary.discrepancyCsvRowsIncluded} discrepancy rows.`,
);
return lines.join("\n");
}
function buildFailureEmailBody({
summary,
summaryKey,
message,
}: {
summary: AttachmentArchiveIntegrityRunSummary;
summaryKey?: string;
message: string;
}) {
const lines = [
"OneMAC archive integrity check failed.",
"",
`Stage: ${summary.stage}`,
`Run id: ${summary.runId}`,
summaryKey ? `Summary key: ${summaryKey}` : "Summary key: unavailable",
summary.packagesTotal > 0
? `Packages scanned: ${summary.packagesScanned}/${summary.packagesTotal}`
: `Packages scanned: ${summary.packagesScanned}`,
`Sections scanned: ${summary.sectionsScanned}`,
`Discrepancies found so far: ${summary.discrepancyCount}`,
];
if (summary.lastProcessedPackageId) {
lines.push(`Last processed package: ${summary.lastProcessedPackageId}`);
}
lines.push("", "Error details:", message);
return lines.join("\n");
}
async function handleDiscrepancyNotification(event: IntegrityNotificationEvent) {
Iif (!event.runResult?.summaryKey || !event.runResult.reportBucketName) {
throw new Error("Discrepancy notification event is missing summary location");
}
const bucketName = event.runResult.reportBucketName;
const summaryKey = event.runResult.summaryKey;
const recipients = await getRecipientConfig();
const summary = await loadSummary({
bucketName,
summaryKey,
});
Iif (!summary) {
throw new Error(`Summary not found at ${summaryKey}`);
}
if (summary.discrepancyCount <= 0) {
summary.notificationStatus = "SKIPPED";
await saveSummary({
bucketName,
summaryKey,
summary,
});
return {
notificationStatus: summary.notificationStatus,
summaryKey,
};
}
try {
const csvBody = await loadCsvAttachment({
bucketName,
key: summary.discrepancyCsvKey,
});
await sendRawEmail({
sourceEmailAddress: recipients.sourceEmailAddress,
sourceEmailHeader: recipients.sourceEmailHeader,
toEmailAddresses: recipients.toEmailAddresses,
toEmailHeaders: recipients.toEmailHeaders,
subject: `[${summary.stage}] OneMAC Archive Integrity Discrepancies (${summary.discrepancyCount})`,
bodyText: buildDiscrepancyEmailBody(summary),
attachment: {
filename: summary.discrepancyCsvFilename,
contentType: "text/csv",
body: csvBody,
},
});
summary.notificationStatus = "SENT";
summary.notificationSentAt = new Date().toISOString();
delete summary.notificationError;
await saveSummary({
bucketName,
summaryKey,
summary,
});
return {
notificationStatus: summary.notificationStatus,
summaryKey,
};
} catch (error) {
summary.notificationStatus = "FAILED";
summary.notificationError = error instanceof Error ? error.message : String(error);
await saveSummary({
bucketName,
summaryKey,
summary,
});
throw error;
}
}
async function handleFailureNotification(event: IntegrityNotificationEvent) {
const storage = getStorageConfig();
const recipients = await getRecipientConfig();
const parsedFailure = parseFailurePayload(event.error);
let summaryKey = parsedFailure.summaryKey || event.runResult?.summaryKey;
let bucketName =
parsedFailure.reportBucketName || event.runResult?.reportBucketName || storage.writeBucketName;
let summary: AttachmentArchiveIntegrityRunSummary | undefined;
if (summaryKey) {
summary = await loadSummary({
bucketName,
summaryKey,
});
}
if (!summary) {
const failure = createFailureSummary({
runId:
parsedFailure.runId ||
event.runResult?.runId ||
`${Date.now()}-${randomUUID().slice(0, 8)}`,
stage: parsedFailure.stage || event.runResult?.stage || storage.stage,
reportPrefix: storage.reportPrefix,
reportBucketName: storage.writeBucketName,
message: parsedFailure.message,
});
summary = failure.summary;
summaryKey = failure.summaryKey;
bucketName = storage.writeBucketName;
}
Iif (!summaryKey) {
throw new Error("Failure notification could not resolve summaryKey");
}
const resolvedSummaryKey = summaryKey;
if (summary.status === "RUNNING") {
summary.status = "FAILED";
}
try {
await sendRawEmail({
sourceEmailAddress: recipients.sourceEmailAddress,
sourceEmailHeader: recipients.sourceEmailHeader,
toEmailAddresses: recipients.toEmailAddresses,
toEmailHeaders: recipients.toEmailHeaders,
subject: `[${summary.stage}] OneMAC Archive Integrity Check Failed`,
bodyText: buildFailureEmailBody({
summary,
summaryKey: resolvedSummaryKey,
message: parsedFailure.message,
}),
});
summary.notificationStatus = "SENT";
summary.notificationSentAt = new Date().toISOString();
summary.errorMessage = parsedFailure.message;
delete summary.notificationError;
await saveSummary({
bucketName,
summaryKey: resolvedSummaryKey,
summary,
});
} catch (error) {
summary.notificationStatus = "FAILED";
summary.notificationError = error instanceof Error ? error.message : String(error);
summary.errorMessage = parsedFailure.message;
await saveSummary({
bucketName,
summaryKey: resolvedSummaryKey,
summary,
});
throw error;
}
return {
notificationStatus: summary.notificationStatus,
summaryKey: resolvedSummaryKey,
};
}
export const handler = async (event: IntegrityNotificationEvent) => {
const normalizedEvent: IntegrityNotificationEvent = {
...event,
runResult: event.runResult || event.input?.runResult,
error: event.error || event.input?.error,
};
if (normalizedEvent.mode === "failure") {
return await handleFailureNotification(normalizedEvent);
}
return await handleDiscrepancyNotification(normalizedEvent);
};
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