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webServerlessSpy.ts
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webServerlessSpy.ts
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import { Modal, Tooltip } from 'bootstrap';
import formatHighlight from 'json-format-highlight';
// import { sampleData } from './sampleData'; // Leave this for testing
import { EventBridgeBaseSpyEvent } from '../common/spyEvents/EventBridgeBaseSpyEvent';
import { FunctionBaseSpyEvent } from '../common/spyEvents/FunctionBaseSpyEvent';
import { SnsSpyEventBase } from '../common/spyEvents/SnsSpyEventBase';
import { SpyEvent } from '../common/spyEvents/SpyEvent';
import { SpyMessage } from '../common/spyEvents/SpyMessage';
import { getTopic } from '../listener/topic';
//needed because of strange bug in Bootstrap Tooltip
(window as any).process = { env: {} };
document.addEventListener('DOMContentLoaded', function () {
run();
});
function run() {
// ************* variables *************
const spyMessages: (SpyMessageExt | SpyMessageGroup)[] = [];
const snsEventsByMessageId: Record<string, SpyMessageExt<SnsSpyEventBase>[]> =
{};
const functionEventsByRequestId: Record<
string,
SpyMessageExt<FunctionBaseSpyEvent>[]
> = {};
const eventBridgeById: Record<
string,
SpyMessageExt<EventBridgeBaseSpyEvent>[]
> = {};
let uiNeedsRefresh = false;
let stackList: string[] | undefined;
const selectedStackLocalStorageKey = 'selectedStack';
let ws: WebSocket;
let selectedStack: string | undefined;
// ************* HTML elements *************
const tableBodyElement = document.getElementById('tableBody')!;
const modalTimeElement = document.getElementById('time')!;
const modalServiceKeyElement = document.getElementById('serviceKey')!;
const modalDataElement = document.getElementById('data')!;
const errorContentElement = document.getElementById('errorContent')!;
const stackListContainerElement =
document.getElementById('stackListContainer')!;
const stackListElement = document.getElementById(
'stackList'
) as HTMLSelectElement;
const serviceKeyFilterInputElement = document.getElementById(
'serviceKeyFilter'
) as HTMLInputElement;
const dataFilterInputElement = document.getElementById(
'dataFilter'
) as HTMLInputElement;
const detailsModal = new Modal('#detailsModal', {
backdrop: true,
keyboard: true,
});
const errorModal = new Modal('#errorModal', {
backdrop: true,
keyboard: true,
});
// ************* events *************
serviceKeyFilterInputElement.addEventListener('input', () => {
uiNeedsRefresh = true;
});
dataFilterInputElement.addEventListener('input', () => {
uiNeedsRefresh = true;
});
tableBodyElement.addEventListener('click', openDetails());
stackListElement.addEventListener('change', () => {
switchStack();
});
void (async () => {
await fillStacks();
await connectToWebSocket();
})();
window.requestAnimationFrame(render);
setupTooltip();
// Do not remove!
// sample data for testing purposes
// for (const sm of sampleData) {
// addSpyMessage(sm as any);
// }
function updateSelectedStack() {
selectedStack = stackListElement.value;
console.log(`Updating selected stack to ${selectedStack}`);
}
function switchStack() {
updateSelectedStack();
uiNeedsRefresh = true;
}
async function fillStacks() {
const response = await fetch('/stackList');
try {
stackList = await response.json();
} catch {
stackList = [];
}
selectedStack = localStorage.getItem(selectedStackLocalStorageKey);
stackListElement.innerHTML =
stackList
?.map(
(s) =>
`<option value="${s}" ${
selectedStack === s ? 'selected' : ''
}>${s}</option>`
)
.join('') ?? '';
updateSelectedStack();
console.log(stackListContainerElement.style.display);
stackListContainerElement.style.display =
stackList && stackList.length > 1 ? '' : 'none';
}
async function connectToWebSocket() {
try {
const response = await fetch(`/wsUrl`);
if (response.ok) {
const url = await response.text();
ws = new WebSocket(url);
ws.addEventListener('open', () => {
console.log(`Connected ${new Date().toISOString()} to IoT`);
});
ws.addEventListener('message', receiveSpyMessage());
ws.addEventListener('close', () => {
console.log(`Disconnected ${new Date().toISOString()}, reconnecting`);
void connectToWebSocket();
});
} else {
showError(await response.text());
}
} catch (err) {
showError(err.message);
}
}
function showError(messsage: string) {
errorContentElement.innerHTML = messsage;
errorModal.show();
}
function render() {
if (uiNeedsRefresh) {
tableBodyElement.innerHTML = spyMessages
.map((sm) => renderSpyMessage(sm))
.join('');
uiNeedsRefresh = false;
}
window.requestAnimationFrame(render);
}
function receiveSpyMessage(): (
this: WebSocket,
ev: MessageEvent<any>
) => any {
return ({ data }) => {
let parsed;
try {
parsed = JSON.parse(data);
} catch (err) {
console.error('Can not parse ' + data);
}
addSpyMessage(parsed);
};
}
function openDetails(): (this: HTMLElement, ev: MouseEvent) => any {
return (e) => {
const row = (e.target as HTMLElement).closest('tr');
const dataElements = row?.getElementsByClassName('data');
const timeElements = row?.getElementsByClassName('time');
const serviceKeyElements = row?.getElementsByClassName('serviceKey');
if (
!dataElements ||
dataElements.length === 0 ||
!timeElements ||
timeElements.length === 0 ||
!serviceKeyElements ||
serviceKeyElements.length === 0
) {
return;
}
modalTimeElement.innerHTML = timeElements[0].textContent || '';
modalServiceKeyElement.innerHTML =
serviceKeyElements[0].textContent || '';
modalDataElement.innerHTML = formatDataJson(
dataElements[0].textContent || ''
);
detailsModal.show();
};
}
function formatDataJson(dataJson: string) {
return formatHighlight(JSON.stringify(JSON.parse(dataJson), null, 2), {
keyColor: 'black',
numberColor: 'blue',
stringColor: '#0B7500',
trueColor: '#00cc00',
falseColor: '#ff8080',
nullColor: 'cornflowerblue',
});
}
function addSpyMessage(spyMessage: SpyMessageExt) {
const spyMessageExt = spyMessage as SpyMessageExt;
spyMessageExt.dataJsonLowerCase = JSON.stringify(
spyMessageExt.data
).toLocaleLowerCase();
spyMessageExt.serviceKeyLowerCase =
spyMessageExt.serviceKey.toLocaleLowerCase();
const service = getServiceNameFromServiceKey(spyMessageExt.serviceKey);
let spyMessageToAdd: SpyMessageExt | SpyMessageGroup | undefined =
spyMessageExt;
if (service === 'Function') {
const spyMessageFunction =
spyMessageExt as SpyMessageExt<FunctionBaseSpyEvent>;
const awsRequestId = spyMessageFunction.data.context.awsRequestId;
let functionEvents = functionEventsByRequestId[awsRequestId];
if (!functionEvents) {
functionEvents = [];
functionEventsByRequestId[awsRequestId] = functionEvents;
}
const step = getFunctionStepFromServiceKey(spyMessageExt.serviceKey);
if (step === 'Request') {
spyMessageToAdd = <SpyMessageGroup>{
timestamp: spyMessageExt.timestamp,
serviceKey: spyMessageExt.serviceKey,
messages: functionEvents,
topic: spyMessageExt.topic,
};
functionEvents.unshift(spyMessageFunction);
} else {
addSpyMessageToArraySorted(spyMessageFunction, functionEvents);
spyMessageToAdd = undefined;
}
} else if (service === 'SnsSubscription' || service === 'SnsTopic') {
const spyMessageSns = spyMessageExt as SpyMessageExt<SnsSpyEventBase>;
const messageId = spyMessageSns.data.messageId;
let snsEvents = snsEventsByMessageId[messageId];
if (!snsEvents) {
snsEvents = [];
snsEventsByMessageId[messageId] = snsEvents;
}
if (service === 'SnsTopic') {
spyMessageToAdd = <SpyMessageGroup>{
timestamp: spyMessageExt.timestamp,
serviceKey: spyMessageExt.serviceKey,
messages: snsEvents,
topic: spyMessageExt.topic,
};
snsEvents.unshift(spyMessageSns);
} else {
addSpyMessageToArraySorted(spyMessageSns, snsEvents);
spyMessageToAdd = undefined;
}
} else if (service === 'EventBridge' || service === 'EventBridgeRule') {
const spyMessageEventBridge =
spyMessageExt as SpyMessageExt<EventBridgeBaseSpyEvent>;
const eventBridgeId = spyMessageEventBridge.data.eventBridgeId;
let eventBridgeEvents = eventBridgeById[eventBridgeId];
if (!eventBridgeEvents) {
eventBridgeEvents = [];
eventBridgeById[eventBridgeId] = eventBridgeEvents;
}
if (service === 'EventBridge') {
spyMessageToAdd = <SpyMessageGroup>{
timestamp: spyMessageExt.timestamp,
serviceKey: spyMessageExt.serviceKey,
messages: eventBridgeEvents,
topic: spyMessageExt.topic,
};
eventBridgeEvents.unshift(spyMessageEventBridge);
} else {
addSpyMessageToArraySorted(spyMessageEventBridge, eventBridgeEvents);
spyMessageToAdd = undefined;
}
}
if (spyMessageToAdd) {
//add in correct order
addSpyMessageToArraySorted(spyMessageToAdd, spyMessages);
uiNeedsRefresh = true;
}
}
function matchFilter(
spyMessage: SpyMessageExt,
filter: {
serviceKey: string;
data: string;
}
) {
let testServiceKey = false;
try {
testServiceKey =
!filter.serviceKey ||
new RegExp(filter.serviceKey).test(spyMessage.serviceKeyLowerCase);
} catch {}
let testData = false;
try {
testData =
!filter.data ||
new RegExp(filter.data).test(spyMessage.dataJsonLowerCase);
} catch {}
return testServiceKey && testData;
}
function getFunctionStepFromServiceKey(serviceKey: string) {
const serviceKeyParts = serviceKey.split('#');
const step =
serviceKeyParts.length > 0
? serviceKeyParts[serviceKeyParts.length - 1]
: undefined;
return step;
}
function renderSpyMessage(spyMessage: SpyMessageExt | SpyMessageGroup) {
const serviceKey = serviceKeyFilterInputElement.value?.toLocaleLowerCase();
const data = dataFilterInputElement.value?.toLocaleLowerCase();
let messages: SpyMessageExt[];
if ((spyMessage as SpyMessageGroup).messages) {
messages = (spyMessage as SpyMessageGroup).messages;
} else {
messages = [spyMessage as SpyMessageExt];
}
const html = messages
.filter((sm) => sm.topic === getTopic(selectedStack!))
.filter((sm) => matchFilter(sm, { serviceKey, data }))
.map((sm, i) => {
const service = getServiceNameFromServiceKey(sm.serviceKey);
let icon: string | undefined;
let iconLinked = '<i class="icon-linked bi bi-arrow-return-right"></i>';
switch (service) {
case 'Function':
const step = getFunctionStepFromServiceKey(sm.serviceKey);
if (i === 0) {
icon = `<img class="aws-icon" src="icons/Arch_AWS-Lambda_16.svg" ></img>`;
} else {
icon = iconLinked;
}
break;
case 'S3':
icon =
'<img class="aws-icon" src="icons/Arch_Amazon-Simple-Storage-Service_16.svg"/>';
break;
case 'SnsTopic':
icon =
'<img class="aws-icon" src="icons/Arch_Amazon-Simple-Notification-Service_16.svg" />';
break;
case 'EventBridge':
icon =
'<img class="aws-icon" src="icons/Arch_Amazon-EventBridge_16.svg" />';
break;
case 'DynamoDB':
icon =
'<img class="aws-icon" src="icons/Arch_Amazon-DynamoDB_16.svg" />';
break;
case 'Sqs':
icon =
'<img class="aws-icon" src="icons/Arch_Amazon-Simple-Queue-Service_16.svg" />';
break;
case 'EventBridgeRule':
if (i === 0) {
icon =
'<img class="aws-icon" src="icons/Arch_Amazon-EventBridge_16.svg" />';
} else {
icon = iconLinked;
}
break;
case 'SnsSubscription':
if (i === 0) {
icon =
'<img class="aws-icon" src="icons/Arch_Amazon-Simple-Notification-Service_16.svg" />';
} else {
icon = iconLinked;
}
break;
default:
break;
}
let timeStamp;
try {
timeStamp = new Date(sm.timestamp).toISOString();
} catch (e) {
console.log(`Failed to render ${JSON.stringify(sm)}: ${e}`);
throw e;
}
return `<tr>
<td class="col-time"><span class="time">${timeStamp}</span></td>
<td class="col-servicekey">${icon}<span class="serviceKey">${
sm.serviceKey
}</span></td>
<td class="col-data"><div class="data">${JSON.stringify(
sm.data
)}</div></td></tr>
`;
})
.join('');
return html;
}
function getServiceNameFromServiceKey(serviceKey: string) {
const serviceKeyParts = serviceKey.split('#');
const service = serviceKeyParts.length > 0 ? serviceKeyParts[0] : undefined;
return service;
}
function setupTooltip() {
var tooltipTriggerList = [].slice.call(
document.querySelectorAll('[data-bs-toggle="tooltip"]')
);
tooltipTriggerList.map(function (tooltipTriggerEl) {
return new Tooltip(tooltipTriggerEl);
});
}
function addSpyMessageToArraySorted(
spyMessageToAdd: SpyMessageExt | SpyMessageGroup,
spyMessages: (SpyMessageExt | SpyMessageGroup)[]
) {
// console.log('Adding message');
let index = 0;
for (let i = spyMessages.length - 1; i >= 0; i--) {
const currentSpyMessages = spyMessages[i];
index = i + 1;
if (i === 0 || currentSpyMessages.timestamp < spyMessageToAdd.timestamp) {
break;
}
}
spyMessages.splice(index, 0, spyMessageToAdd);
}
}
type SpyMessageExt<T extends SpyEvent = SpyEvent> = SpyMessage<T> & {
dataJsonLowerCase: string;
serviceKeyLowerCase: string;
topic: string;
};
type SpyMessageGroup<T extends SpyEvent = SpyEvent> = {
timestamp: string;
serviceKey: string;
messages: SpyMessageExt<T>[];
topic: string;
};