misc_pterodactyl-panel/resources/assets/scripts/components/dashboard/ServerBox.ts

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import Vue from 'vue';
import { get } from 'lodash';
import { differenceInSeconds } from 'date-fns';
import {AxiosError, AxiosResponse} from "axios";
type DataStructure = {
backgroundedAt: Date,
documentVisible: boolean,
resources: null | { [s: string]: any },
cpu: number,
memory: number,
status: string,
link: { name: string, params: { id: string } },
dataGetTimeout: undefined | number,
}
export default Vue.component('server-box', {
props: {
server: { type: Object, required: true },
},
data: function (): DataStructure {
return {
backgroundedAt: new Date(),
documentVisible: true,
resources: null,
cpu: 0,
memory: 0,
status: '',
link: { name: 'server', params: { id: this.server.identifier }},
dataGetTimeout: undefined,
};
},
watch: {
/**
* Watch the documentVisible item and perform actions when it is changed. If it becomes
* true, we want to check how long ago the last poll was, if it was more than 30 seconds
* we want to immediately trigger the resourceUse api call, otherwise we just want to restart
* the time.
*
* If it is now false, we want to clear the timer that checks resource use, since we know
* we won't be doing anything with them anyways. Might as well avoid extraneous resource
* usage by the browser.
*/
documentVisible: function (value) {
if (!value) {
window.clearTimeout(this.dataGetTimeout);
return;
}
if (differenceInSeconds(new Date(), this.backgroundedAt) >= 30) {
this.getResourceUse();
}
this.dataGetTimeout = window.setInterval(() => {
this.getResourceUse();
}, 10000);
},
},
/**
* Grab the initial resource usage for this specific server instance and add a listener
* to monitor when this window is no longer visible. We don't want to needlessly poll the
* API when we aren't looking at the page.
*/
created: function () {
this.getResourceUse();
document.addEventListener('visibilitychange', this._visibilityChange.bind(this));
},
/**
* Poll the API for changes every 10 seconds when the component is mounted.
*/
mounted: function () {
this.dataGetTimeout = window.setInterval(() => {
this.getResourceUse();
}, 10000);
},
/**
* Clear the timer and event listeners when we destroy the component.
*/
beforeDestroy: function () {
window.clearInterval(this.$data.dataGetTimeout);
document.removeEventListener('visibilitychange', this._visibilityChange.bind(this), false);
},
methods: {
/**
* Query the resource API to determine what this server's state and resource usage is.
*/
getResourceUse: function () {
window.axios.get(this.route('api.client.servers.resources', { server: this.server.identifier }))
.then((response: AxiosResponse) => {
if (!(response.data instanceof Object)) {
throw new Error('Received an invalid response object back from status endpoint.');
}
this.resources = response.data.attributes;
this.status = this.getServerStatus();
this.memory = parseInt(parseFloat(get(this.resources, 'memory.current', '0')).toFixed(0));
this.cpu = this._calculateCpu(
parseFloat(get(this.resources, 'cpu.current', '0')),
parseFloat(this.server.limits.cpu)
);
})
.catch((err: AxiosError) => console.warn('Error fetching server resource usage', { ...err }));
},
/**
* Set the CSS to use for displaying the server's current status.
*/
getServerStatus: function () {
if (!this.resources || !this.resources.installed || this.resources.suspended) {
return '';
}
switch (this.resources.state) {
case 'off':
return 'offline';
case 'on':
case 'starting':
case 'stopping':
return 'online';
default:
return '';
}
},
/**
* Calculate the CPU usage for a given server relative to their set maximum.
*
* @private
*/
_calculateCpu: function (current: number, max: number) {
if (max === 0) {
return parseFloat(current.toFixed(1));
}
return parseFloat((current / max * 100).toFixed(1));
},
/**
* Handle document visibility changes.
*
* @private
*/
_visibilityChange: function () {
this.documentVisible = document.visibilityState === 'visible';
if (!this.documentVisible) {
this.backgroundedAt = new Date();
}
},
},
template: `
<div class="server-card-container animated-fade-in">
<div>
<div class="server-card">
<router-link :to="link" class="block">
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<h2 class="text-xl flex flex-row items-center mb-2">
<div class="identifier-icon select-none" :class="{
'bg-neutral-400': status === '',
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'bg-red-500': status === 'offline',
'bg-green-500': status === 'online'
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}">
{{ server.name[0] }}
</div>
{{ server.name }}
</h2>
</router-link>
<div class="flex-1 py-3">
<p v-if="server.description.length" class="text-neutral-500 text-sm">{{ server.description }}</p>
</div>
<div class="flex flex-none pt-2">
<div class="flex-1">
<span class="font-semibold text-cyan-800">{{ server.node }}</span>
</div>
<div>
<span class="text-neutral-300">{{ server.allocation.ip }}:{{ server.allocation.port }}</span>
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</div>
</div>
</div>
<div class="footer p-4 text-sm">
<div class="inline-block pr-2">
<div class="pillbox bg-neutral-700"><span class="select-none">MEM:</span> {{ memory }} Mb</div>
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</div>
<div class="inline-block">
<div class="pillbox bg-neutral-700"><span class="select-none">CPU:</span> {{ cpu }} %</div>
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</div>
</div>
</div>
</div>
`
});