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Chore: Extracted the dns monitor to its own monitor-type (#3413)

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* extracted the dns monitor to its own monitor-type

* linting fixes

* another formatting fix

* Fix: Improve dnsMessage handling (#3614)

* fixed docs

* fixed formatting changes
This commit is contained in:
Frank Elsinga
2023-09-09 12:14:55 +02:00
committed by GitHub
parent f0c54be43f
commit d6af9162c1
3 changed files with 59 additions and 41 deletions
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42
server/model/monitor.js
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@@ -5,7 +5,7 @@ const { Prometheus } = require("../prometheus");
const { log, UP, DOWN, PENDING, MAINTENANCE, flipStatus, TimeLogger, MAX_INTERVAL_SECOND, MIN_INTERVAL_SECOND,
SQL_DATETIME_FORMAT
} = require("../../src/util");
const { tcping, ping, dnsResolve, checkCertificate, checkStatusCode, getTotalClientInRoom, setting, mssqlQuery, postgresQuery, mysqlQuery, mqttAsync, setSetting, httpNtlm, radius, grpcQuery,
const { tcping, ping, checkCertificate, checkStatusCode, getTotalClientInRoom, setting, mssqlQuery, postgresQuery, mysqlQuery, mqttAsync, setSetting, httpNtlm, radius, grpcQuery,
redisPingAsync, mongodbPing, kafkaProducerAsync, getOidcTokenClientCredentials,
} = require("../util-server");
const { R } = require("redbean-node");
@@ -584,46 +584,6 @@ class Monitor extends BeanModel {
bean.ping = await ping(this.hostname, this.packetSize);
bean.msg = "";
bean.status = UP;
} else if (this.type === "dns") {
let startTime = dayjs().valueOf();
let dnsMessage = "";
let dnsRes = await dnsResolve(this.hostname, this.dns_resolve_server, this.port, this.dns_resolve_type);
bean.ping = dayjs().valueOf() - startTime;
if (this.dns_resolve_type === "A" || this.dns_resolve_type === "AAAA" || this.dns_resolve_type === "TXT" || this.dns_resolve_type === "PTR") {
dnsMessage += "Records: ";
dnsMessage += dnsRes.join(" | ");
} else if (this.dns_resolve_type === "CNAME") {
dnsMessage += dnsRes[0];
} else if (this.dns_resolve_type === "CAA") {
dnsMessage += dnsRes[0].issue;
} else if (this.dns_resolve_type === "MX") {
dnsRes.forEach(record => {
dnsMessage += `Hostname: ${record.exchange} - Priority: ${record.priority} | `;
});
dnsMessage = dnsMessage.slice(0, -2);
} else if (this.dns_resolve_type === "NS") {
dnsMessage += "Servers: ";
dnsMessage += dnsRes.join(" | ");
} else if (this.dns_resolve_type === "SOA") {
dnsMessage += `NS-Name: ${dnsRes.nsname} | Hostmaster: ${dnsRes.hostmaster} | Serial: ${dnsRes.serial} | Refresh: ${dnsRes.refresh} | Retry: ${dnsRes.retry} | Expire: ${dnsRes.expire} | MinTTL: ${dnsRes.minttl}`;
} else if (this.dns_resolve_type === "SRV") {
dnsRes.forEach(record => {
dnsMessage += `Name: ${record.name} | Port: ${record.port} | Priority: ${record.priority} | Weight: ${record.weight} | `;
});
dnsMessage = dnsMessage.slice(0, -2);
}
if (this.dnsLastResult !== dnsMessage && dnsMessage !== undefined) {
R.exec("UPDATE `monitor` SET dns_last_result = ? WHERE id = ? ", [
dnsMessage,
this.id
]);
}
bean.msg = dnsMessage;
bean.status = UP;
} else if (this.type === "push") { // Type: Push
log.debug("monitor", `[${this.name}] Checking monitor at ${dayjs().format("YYYY-MM-DD HH:mm:ss.SSS")}`);
const bufferTime = 1000; // 1s buffer to accommodate clock differences

56
server/monitor-types/dns.js Normal file
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@@ -0,0 +1,56 @@
const { MonitorType } = require("./monitor-type");
const { UP } = require("../../src/util");
const dayjs = require("dayjs");
const { dnsResolve } = require("../util-server");
const { R } = require("redbean-node");
class DnsMonitorType extends MonitorType {
name = "dns";
/**
* @inheritdoc
*/
async check(monitor, heartbeat, _server) {
let startTime = dayjs().valueOf();
let dnsMessage = "";
let dnsRes = await dnsResolve(monitor.hostname, monitor.dns_resolve_server, monitor.port, monitor.dns_resolve_type);
heartbeat.ping = dayjs().valueOf() - startTime;
if (monitor.dns_resolve_type === "A" || monitor.dns_resolve_type === "AAAA" || monitor.dns_resolve_type === "TXT" || monitor.dns_resolve_type === "PTR") {
dnsMessage += "Records: ";
dnsMessage += dnsRes.join(" | ");
} else if (monitor.dns_resolve_type === "CNAME" || monitor.dns_resolve_type === "PTR") {
dnsMessage += dnsRes[0];
} else if (monitor.dns_resolve_type === "CAA") {
dnsMessage += dnsRes[0].issue;
} else if (monitor.dns_resolve_type === "MX") {
dnsRes.forEach(record => {
dnsMessage += `Hostname: ${record.exchange} - Priority: ${record.priority} | `;
});
dnsMessage = dnsMessage.slice(0, -2);
} else if (monitor.dns_resolve_type === "NS") {
dnsMessage += "Servers: ";
dnsMessage += dnsRes.join(" | ");
} else if (monitor.dns_resolve_type === "SOA") {
dnsMessage += `NS-Name: ${dnsRes.nsname} | Hostmaster: ${dnsRes.hostmaster} | Serial: ${dnsRes.serial} | Refresh: ${dnsRes.refresh} | Retry: ${dnsRes.retry} | Expire: ${dnsRes.expire} | MinTTL: ${dnsRes.minttl}`;
} else if (monitor.dns_resolve_type === "SRV") {
dnsRes.forEach(record => {
dnsMessage += `Name: ${record.name} | Port: ${record.port} | Priority: ${record.priority} | Weight: ${record.weight} | `;
});
dnsMessage = dnsMessage.slice(0, -2);
}
if (monitor.dns_last_result !== dnsMessage && dnsMessage !== undefined) {
await R.exec("UPDATE `monitor` SET dns_last_result = ? WHERE id = ? ", [ dnsMessage, monitor.id ]);
}
heartbeat.msg = dnsMessage;
heartbeat.status = UP;
}
}
module.exports = {
DnsMonitorType,
};

2
server/uptime-kuma-server.js
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@@ -110,6 +110,7 @@ class UptimeKumaServer {
// Set Monitor Types
UptimeKumaServer.monitorTypeList["real-browser"] = new RealBrowserMonitorType();
UptimeKumaServer.monitorTypeList["tailscale-ping"] = new TailscalePing();
UptimeKumaServer.monitorTypeList["dns"] = new DnsMonitorType();
this.io = new Server(this.httpServer);
}
@@ -419,3 +420,4 @@ module.exports = {
// Must be at the end to avoid circular dependencies
const { RealBrowserMonitorType } = require("./monitor-types/real-browser-monitor-type");
const { TailscalePing } = require("./monitor-types/tailscale-ping");
const { DnsMonitorType } = require("./monitor-types/dns");