smartdaemon/ts/smartdaemon.classes.systemdmanager.ts

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import * as plugins from './smartdaemon.plugins';
import * as paths from './smartdaemon.paths';
import { SmartDaemon } from './smartdaemon.classes.smartdaemon';
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import {
ISmartDaemonServiceConstructorOptions,
SmartDaemonService,
} from './smartdaemon.classes.service';
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export class SmartDaemonSystemdManager {
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// STATIC
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private static smartDaemonNamespace = 'smartdaemon';
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public static createServiceNameFromServiceName(serviceNameArg: string) {
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return `${SmartDaemonSystemdManager.smartDaemonNamespace}_${serviceNameArg}`;
}
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public static createFileNameFromServiceName(serviceNameArg: string) {
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return `${SmartDaemonSystemdManager.createServiceNameFromServiceName(serviceNameArg)}.service`;
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}
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public static createFilePathFromServiceName(serviceNameArg: string) {
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return plugins.path.join(
paths.systemdDir,
SmartDaemonSystemdManager.createFileNameFromServiceName(serviceNameArg)
);
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}
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// INSTANCE
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public smartdaemonRef: SmartDaemon;
public smartshellInstance: plugins.smartshell.Smartshell;
public smartsystem: plugins.smartsystem.Smartsystem;
public shouldExecute: boolean = false;
constructor(smartdaemonRefArg: SmartDaemon) {
this.smartdaemonRef = smartdaemonRefArg;
this.smartshellInstance = new plugins.smartshell.Smartshell({
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executor: 'bash',
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});
this.smartsystem = new plugins.smartsystem.Smartsystem();
}
public async checkElegibility() {
if (await this.smartsystem.env.isLinuxAsync()) {
this.shouldExecute = true;
} else {
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console.log('Smartdaemon can only be used on Linux systems! Refusing to set up a service.');
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this.shouldExecute = false;
}
return this.shouldExecute;
}
public async execute(commandArg: string) {
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if (await this.checkElegibility()) {
await this.smartshellInstance.exec(commandArg);
}
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}
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/**
* gets all services that are already present
*/
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public async getServices() {
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const existingServices: SmartDaemonService[] = [];
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if (await this.checkElegibility()) {
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const smartfmInstance = new plugins.smartfm.Smartfm({
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fmType: 'yaml',
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});
const availableServices = await plugins.smartfile.fs.fileTreeToObject(
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paths.systemdDir,
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'smartdaemon_*.service'
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);
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for (const serviceFile of availableServices) {
const data = smartfmInstance.parseFromComments('# ', serviceFile.contentBuffer.toString())
.data as ISmartDaemonServiceConstructorOptions;
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const service = await SmartDaemonService.createFromOptions(this.smartdaemonRef, data);
service.alreadyExists = true;
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existingServices.push(service);
}
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}
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return existingServices;
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}
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public async startService(serviceArg: SmartDaemonService) {
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if (await this.checkElegibility()) {
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await this.execute(
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`systemctl start ${SmartDaemonSystemdManager.createServiceNameFromServiceName(
serviceArg.name
)}`
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);
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}
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}
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public async stopService(serviceArg: SmartDaemonService) {
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if (await this.checkElegibility()) {
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await this.execute(
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`systemctl stop ${SmartDaemonSystemdManager.createServiceNameFromServiceName(
serviceArg.name
)}`
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);
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}
}
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public async saveService(serviceArg: SmartDaemonService) {
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if (await this.checkElegibility()) {
await plugins.smartfile.memory.toFs(
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this.smartdaemonRef.templateManager.generateUnitFileForService(serviceArg),
SmartDaemonSystemdManager.createFilePathFromServiceName(serviceArg.name)
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);
}
}
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public async deleteService(serviceArg: SmartDaemonService) {
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if (await this.checkElegibility()) {
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await plugins.smartfile.fs.remove(
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SmartDaemonSystemdManager.createServiceNameFromServiceName(serviceArg.name)
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);
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}
}
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public async enableService(serviceArg: SmartDaemonService) {
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if (await this.checkElegibility()) {
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await this.saveService(serviceArg);
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if (serviceArg.alreadyExists) {
await this.execute(`systemctl daemon-reload`);
}
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await this.execute(
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`systemctl enable ${SmartDaemonSystemdManager.createServiceNameFromServiceName(
serviceArg.name
)}`
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);
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}
}
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public async disableService(serviceArg: SmartDaemonService) {
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if (await this.checkElegibility()) {
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await this.execute(
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`systemctl disable ${SmartDaemonSystemdManager.createServiceNameFromServiceName(
serviceArg.name
)}`
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);
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}
}
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public async reload() {
if (await this.checkElegibility()) {
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await this.execute(`systemctl daemon-reload`);
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}
}
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}