113 lines
4.0 KiB
TypeScript
113 lines
4.0 KiB
TypeScript
import { connect } from "cloudflare:sockets";
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import { MonitorTarget } from "../../uptime.types";
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import { withTimeout, fetchTimeout } from "./util";
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export async function getStatus(
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monitor: MonitorTarget
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): Promise<{ ping: number; up: boolean; err: string }> {
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let status = {
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ping: 0,
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up: false,
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err: 'Unknown',
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}
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const startTime = Date.now()
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if (monitor.method === 'TCP_PING') {
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// TCP port endpoint monitor
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try {
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// This is not a real https connection, but we need to add a dummy `https://` to parse the hostname & port
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const parsed = new URL("https://" + monitor.target)
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const socket = connect({ hostname: parsed.hostname, port: Number(parsed.port) })
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// Now we have an `opened` promise!
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// @ts-ignore
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await withTimeout(monitor.timeout || 10000, socket.opened)
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await socket.close()
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console.log(`${monitor.name} connected to ${monitor.target}`)
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status.ping = Date.now() - startTime
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status.up = true
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status.err = ''
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} catch (e: Error | any) {
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console.log(`${monitor.name} errored with ${e.name}: ${e.message}`)
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if (e.message.includes('timed out')) {
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status.ping = monitor.timeout || 10000
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}
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status.up = false
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status.err = e.name + ': ' + e.message
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}
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} else {
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// HTTP endpoint monitor
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try {
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const response = await fetchTimeout(monitor.target, monitor.timeout || 10000, {
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method: monitor.method,
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headers: monitor.headers as any,
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body: monitor.body,
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cf: {
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cacheTtlByStatus: {
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'100-599': -1, // Don't cache any status code, from https://developers.cloudflare.com/workers/runtime-apis/request/#requestinitcfproperties
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},
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},
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})
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console.log(`${monitor.name} responded with ${response.status}`)
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status.ping = Date.now() - startTime
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if (monitor.expectedCodes) {
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if (!monitor.expectedCodes.includes(response.status)) {
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console.log(`${monitor.name} expected ${monitor.expectedCodes}, got ${response.status}`)
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status.up = false
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status.err = `Expected codes: ${JSON.stringify(monitor.expectedCodes)}, Got: ${response.status
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}`
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return status
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}
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} else {
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if (response.status < 200 || response.status > 299) {
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console.log(`${monitor.name} expected 2xx, got ${response.status}`)
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status.up = false
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status.err = `Expected codes: 2xx, Got: ${response.status}`
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return status
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}
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}
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if (monitor.responseKeyword || monitor.responseForbiddenKeyword) {
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// Only read response body if we have a keyword to check
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const responseBody = await response.text()
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// MUST contain responseKeyword
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if (monitor.responseKeyword && !responseBody.includes(monitor.responseKeyword)) {
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console.log(`${monitor.name} expected keyword ${monitor.responseKeyword}, not found in response (truncated to 100 chars): ${responseBody.slice(0, 100)}`)
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status.up = false
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status.err = "HTTP response doesn't contain the configured keyword"
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return status
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}
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// MUST NOT contain responseForbiddenKeyword
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if (monitor.responseForbiddenKeyword && responseBody.includes(monitor.responseForbiddenKeyword)) {
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console.log(`${monitor.name} forbidden keyword ${monitor.responseForbiddenKeyword}, found in response (truncated to 100 chars): ${responseBody.slice(0, 100)}`)
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status.up = false
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status.err = "HTTP response contains the configured forbidden keyword"
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return status
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}
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}
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status.up = true
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status.err = ''
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} catch (e: any) {
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console.log(`${monitor.name} errored with ${e.name}: ${e.message}`)
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if (e.name === 'AbortError') {
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status.ping = monitor.timeout || 10000
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status.up = false
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status.err = `Timeout after ${status.ping}ms`
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} else {
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status.up = false
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status.err = e.name + ': ' + e.message
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}
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}
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}
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return status
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}
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