feat: hypervisor async imports

api/src/core/modules/vms/get-domains.ts

@@ -1,8 +1,8 @@
-import { ConnectListAllDomainsFlags } from '@vmngr/libvirt';
-import { getHypervisor } from '@app/core/utils/vms/get-hypervisor';
-import { VmState, type VmDomain } from '@app/graphql/generated/api/types';
 import { GraphQLError } from 'graphql';
 
+import type { VmDomain } from '@app/graphql/generated/api/types';
+import { VmState } from '@app/graphql/generated/api/types';
+
 const states = {
     0: 'NOSTATE',
     1: 'RUNNING',
@@ -17,10 +17,11 @@ const states = {
 /**
  * Get vm domains.
  */
-export const getDomains =async () => {
-
+export const getDomains = async () => {
+    const { ConnectListAllDomainsFlags } = await import('@vmngr/libvirt');
+    const { UnraidHypervisor } = await import('@app/core/utils/vms/get-hypervisor');
     try {
-        const hypervisor = await getHypervisor();
+        const hypervisor = await UnraidHypervisor.getInstance().getHypervisor();
         if (!hypervisor) {
             throw new GraphQLError('VMs Disabled');
         }
@@ -30,9 +31,7 @@ export const getDomains =async () => {
         );
 
         const autoStartDomainNames = await Promise.all(
-            autoStartDomains.map(async (domain) =>
-                hypervisor.domainGetName(domain)
-            )
+            autoStartDomains.map(async (domain) => hypervisor.domainGetName(domain))
         );
 
         // Get all domains
@@ -53,9 +52,11 @@ export const getDomains =async () => {
             })
         );
 
-        return  resolvedDomains;
+        return resolvedDomains;
     } catch (error: unknown) {
         // If we hit an error expect libvirt to be offline
-        throw new GraphQLError(`Failed to fetch domains with error: ${error instanceof Error ? error.message : 'Unknown Error'}`);
+        throw new GraphQLError(
+            `Failed to fetch domains with error: ${error instanceof Error ? error.message : 'Unknown Error'}`
+        );
     }
 };

api/src/core/utils/vms/get-hypervisor.ts

@@ -1,13 +1,12 @@
-import { access } from 'fs/promises';
 import { constants } from 'fs';
+import { access } from 'fs/promises';
+
+import type { Hypervisor as HypervisorType } from '@vmngr/libvirt';
 
-import { Hypervisor } from '@vmngr/libvirt';
 import { libvirtLogger } from '@app/core/log';
 
 const uri = process.env.LIBVIRT_URI ?? 'qemu:///system';
 
-let hypervisor: Hypervisor | null;
-
 const libvirtPid = '/var/run/libvirt/libvirtd.pid';
 
 const isLibvirtRunning = async (): Promise<boolean> => {
@@ -19,29 +18,40 @@ const isLibvirtRunning = async (): Promise<boolean> => {
     }
 };
 
-export const getHypervisor = async (): Promise<Hypervisor> => {
-    // Return hypervisor if it's already connected
-    const running = await isLibvirtRunning();
+export class UnraidHypervisor {
+    private static instance: UnraidHypervisor | null = null;
+    private hypervisor: HypervisorType | null = null;
+    private constructor() {}
 
-    if (hypervisor && running) {
-        return hypervisor;
+    public static getInstance(): UnraidHypervisor {
+        if (this.instance === null) {
+            this.instance = new UnraidHypervisor();
+        }
+        return this.instance;
     }
 
-	if (!running) {
-		hypervisor = null;
-		throw new Error('Libvirt is not running');
-	}
+    public async getHypervisor(): Promise<HypervisorType | null> {
+        // Return hypervisor if it's already connected
+        const running = await isLibvirtRunning();
 
-    hypervisor = new Hypervisor({ uri });
-    await hypervisor.connectOpen().catch((error: unknown) => {
-        libvirtLogger.error(
-            `Failed starting VM hypervisor connection with "${
-                (error as Error).message
-            }"`
-        );
+        if (this.hypervisor && running) {
+            return this.hypervisor;
+        }
 
-        throw error;
-    });
+        if (!running) {
+            this.hypervisor = null;
+            throw new Error('Libvirt is not running');
+        }
+        const { Hypervisor } = await import('@vmngr/libvirt');
+        this.hypervisor = new Hypervisor({ uri });
+        await this.hypervisor.connectOpen().catch((error: unknown) => {
+            libvirtLogger.error(
+                `Failed starting VM hypervisor connection with "${(error as Error).message}"`
+            );
 
-    return hypervisor;
-};
+            throw error;
+        });
+
+        return this.hypervisor;
+    }
+}

api/src/core/utils/vms/parse-domain.ts

@@ -1,5 +1,4 @@
 import { type Domain } from '@app/core/types';
-import { getHypervisor } from '@app/core/utils/vms/get-hypervisor';
 
 export type DomainLookupType = 'id' | 'uuid' | 'name';
 
@@ -21,7 +20,8 @@ export const parseDomain = async (type: DomainLookupType, id: string): Promise<D
 		throw new Error(`Type must be one of [${Object.keys(types).join(', ')}], ${type} given.`);
 	}
 
-	const client = await getHypervisor();
+	const { UnraidHypervisor } = await import('@app/core/utils/vms/get-hypervisor');
+	const client = await UnraidHypervisor.getInstance().getHypervisor();
 	const method = types[type];
 	const domain = await client[method](id);
 	const info = await domain.getInfoAsync();

api/src/unraid-api/cli/start.command.ts

@@ -3,7 +3,7 @@ import { Command, CommandRunner, Option } from 'nest-commander';
 
 import { ECOSYSTEM_PATH, PM2_PATH } from '@app/consts';
 import { levels, type LogLevel } from '@app/core/log';
-import { LogService } from '@app/unraid-api/cli/log.service';
+import type { LogService } from '@app/unraid-api/cli/log.service';
 
 interface StartCommandOptions {
     'log-level'?: string;