feat(diagnostics): harden ingestion and delivery

This commit is contained in:
2026-07-15 00:43:49 +02:00
parent ead4e09a60
commit b602a3acb6
42 changed files with 22428 additions and 141 deletions

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import { describe, expect, it } from "vitest";
import {
MAX_BREADCRUMBS_JSON_BYTES,
MAX_DEVICE_JSON_BYTES,
MAX_LOG_BYTES,
normalizeBug,
normalizeCrash,
normalizeEvents,
readJsonObject,
} from "../src/input";
const ID = "aaaaaaaa-aaaa-4aaa-8aaa-aaaaaaaaaaaa";
const INSTALL_ID = "bbbbbbbb-bbbb-4bbb-8bbb-bbbbbbbbbbbb";
const ENCODER = new TextEncoder();
describe("readJsonObject", () => {
it("enforces the byte limit on a chunked body without Content-Length", async () => {
const bytes = ENCODER.encode(JSON.stringify({ value: "😀".repeat(40) }));
const request = chunkedJsonRequest([
bytes.subarray(0, 7),
bytes.subarray(7, 31),
bytes.subarray(31),
]);
expect(request.headers.has("content-length")).toBe(false);
await expect(readJsonObject(request, 64)).resolves.toEqual({
ok: false,
status: 413,
error: "payload_too_large",
});
});
it("joins chunks before fatally decoding UTF-8", async () => {
const bytes = ENCODER.encode(JSON.stringify({ value: "😀" }));
const emojiStart = bytes.indexOf(0xf0);
const request = chunkedJsonRequest([
bytes.subarray(0, emojiStart + 2),
bytes.subarray(emojiStart + 2),
]);
await expect(readJsonObject(request, bytes.byteLength)).resolves.toEqual({
ok: true,
value: { value: "😀" },
});
});
it("rejects malformed UTF-8", async () => {
const request = chunkedJsonRequest([
new Uint8Array([0x7b, 0x22, 0x78, 0x22, 0x3a, 0x22, 0xc3, 0x28, 0x22, 0x7d]),
]);
await expect(readJsonObject(request, 100)).resolves.toEqual({
ok: false,
status: 400,
error: "invalid_utf8",
});
});
it("requires application/json with a UTF-8 charset", async () => {
const missing = new Request("https://example.test/v1/events", {
method: "POST",
body: "{}",
});
const wrongCharset = chunkedJsonRequest([ENCODER.encode("{}")], "application/json; charset=utf-16");
await expect(readJsonObject(missing, 100)).resolves.toEqual({
ok: false,
status: 415,
error: "unsupported_media_type",
});
await expect(readJsonObject(wrongCharset, 100)).resolves.toEqual({
ok: false,
status: 415,
error: "unsupported_media_type",
});
});
it("validates Content-Length before reading the body", async () => {
const invalid = chunkedJsonRequest([ENCODER.encode("{}")], "application/json", "invalid");
const oversized = chunkedJsonRequest(
[ENCODER.encode("{}")],
"application/json",
"999999999999999999999999999999999999",
);
await expect(readJsonObject(invalid, 100)).resolves.toEqual({
ok: false,
status: 400,
error: "invalid_content_length",
});
await expect(readJsonObject(oversized, 100)).resolves.toEqual({
ok: false,
status: 413,
error: "payload_too_large",
});
});
it("rejects a non-object JSON root", async () => {
const request = chunkedJsonRequest([ENCODER.encode("null")]);
await expect(readJsonObject(request, 100)).resolves.toEqual({
ok: false,
status: 400,
error: "invalid_body",
});
});
});
describe("normalizers", () => {
it("preserves false booleans and rejects their string representation", () => {
const crash = crashPayload(false);
const normalizedCrash = normalizeCrash(crash);
expect(normalizedCrash.ok).toBe(true);
if (normalizedCrash.ok) {
expect(normalizedCrash.value.diagnosticsEnabledAtCapture).toBe(false);
}
expect(normalizeCrash(crashPayload("false"))).toEqual({
ok: false,
status: 400,
error: "invalid_diagnostics_enabled",
});
const bug = bugPayload({ include_logs: false, logs: "discard me" });
const normalizedBug = normalizeBug(bug);
expect(normalizedBug.ok).toBe(true);
if (normalizedBug.ok) expect(normalizedBug.value.logs).toBe("");
const missingConsent = normalizeBug(bugPayload({ logs: "discard me" }));
expect(missingConsent.ok && missingConsent.value.logs).toBe("");
expect(normalizeBug(bugPayload({ include_logs: "false" }))).toEqual({
ok: false,
status: 400,
error: "invalid_include_logs",
});
});
it("keeps logs, breadcrumbs, and device JSON within valid byte budgets", () => {
const properties = Object.fromEntries(
Array.from({ length: 12 }, (_, index) => [`key-${index}-${"\u0000".repeat(40)}`, "\u0000".repeat(128)]),
);
const breadcrumbs = Array.from({ length: 40 }, (_, index) => ({
name: `crumb-${index}`,
timestamp_millis: index,
properties,
}));
const result = normalizeBug(
bugPayload({
include_logs: true,
logs: "😀".repeat(60_000),
breadcrumbs,
device: {
device_name: "\u0000".repeat(200),
device_model: "\u0000".repeat(200),
operating_system: "\u0000".repeat(300),
network: "\u0000".repeat(150),
battery_level: "\u0000".repeat(100),
},
}),
);
expect(result.ok).toBe(true);
if (!result.ok) return;
const breadcrumbsJson = JSON.stringify(result.value.breadcrumbs);
const deviceJson = JSON.stringify(result.value.device);
expect(ENCODER.encode(result.value.logs).byteLength).toBe(MAX_LOG_BYTES);
expect(ENCODER.encode(breadcrumbsJson).byteLength).toBeLessThanOrEqual(
MAX_BREADCRUMBS_JSON_BYTES,
);
expect(ENCODER.encode(deviceJson).byteLength).toBeLessThanOrEqual(MAX_DEVICE_JSON_BYTES);
expect(JSON.parse(breadcrumbsJson)).toEqual(result.value.breadcrumbs);
expect(JSON.parse(deviceJson)).toEqual(result.value.device);
});
it("requires stable report IDs and validates supplied IDs and schema versions", () => {
const result = normalizeEvents({
events: [{ name: "opened", ts: 1, schema_version: 1 }],
});
expect(result).toEqual({ ok: false, status: 400, error: "invalid_batch_id" });
const legacyInstall = normalizeEvents({
batch_id: ID,
install_id: "legacy-test-install",
events: [{ name: "opened", ts: 1 }],
});
expect(legacyInstall.ok && legacyInstall.value.installId).toBe("legacy-test-install");
const missingInstall = normalizeEvents({
batch_id: ID,
events: [{ name: "opened", ts: 1 }],
});
expect(missingInstall.ok && missingInstall.value.installId).toBe("unknown");
expect(
normalizeEvents({
batch_id: ID,
install_id: "bad\u0000install",
events: [{ name: "opened", ts: 1 }],
}),
).toEqual({ ok: false, status: 400, error: "invalid_install_id" });
expect(
normalizeEvents({
batch_id: "not-a-uuid",
events: [{ name: "opened", timestamp_millis: 1 }],
}),
).toEqual({ ok: false, status: 400, error: "invalid_batch_id" });
expect(
normalizeEvents({
batch_id: ID,
install_id: INSTALL_ID,
events: [{ name: "opened", timestamp_millis: 1, schema_version: 2 }],
}),
).toEqual({ ok: false, status: 400, error: "unsupported_schema_version" });
});
});
function chunkedJsonRequest(
chunks: readonly Uint8Array[],
contentType = "application/json; charset=utf-8",
contentLength?: string,
): Request {
return new Request("https://example.test/v1/events", {
method: "POST",
headers: {
"content-type": contentType,
...(contentLength == null ? {} : { "content-length": contentLength }),
},
body: new ReadableStream<Uint8Array>({
start(controller) {
for (const chunk of chunks) controller.enqueue(chunk);
controller.close();
},
}),
});
}
function crashPayload(diagnosticsEnabled: unknown): Record<string, unknown> {
return {
id: ID,
install_id: INSTALL_ID,
app_version: "1.0",
platform: "test",
exception_type: "ExampleError",
exception_message: "message",
stack_trace: "stack",
occurred_at: 1,
diagnostics_enabled: diagnosticsEnabled,
schema_version: 1,
breadcrumbs: [],
};
}
function bugPayload(overrides: Record<string, unknown> = {}): Record<string, unknown> {
return {
id: ID,
install_id: INSTALL_ID,
app_version: "1.0",
platform: "test",
occurred_at: 1,
what_happened: "It failed",
expected: "It worked",
steps: "Open the app",
contact: "",
logs: "",
device: {},
breadcrumbs: [],
schema_version: 1,
...overrides,
};
}