retrasar instalación de paquetes para instalarlos todos juntos (perf) (y refactor)

asdfasdf

alpine.ts

@@ -21,6 +21,7 @@ export class Alpine {
     this.dir = dir;
   }
   fstab: Fstab = new Fstab(this);
+  packages: string[] = [];
 
   async mkdirP(dir: string): Promise<void> {
     await mkdir(this.path(dir), { recursive: true });
@@ -69,8 +70,27 @@ export class Alpine {
   readPasswd(): Promise<PasswdEntry[]> {
     return readPasswd(this.path("/etc/passwd"));
   }
-  async userAdd(user: string): Promise<PasswdEntry> {
-    await execFile("useradd", ["--user-group", "--root", this.dir, user]);
+  async userAdd(
+    user: string,
+    {
+      system,
+      homeDir,
+      createHome,
+    }: { system: boolean; homeDir?: string; createHome: boolean } = {
+      system: false,
+      homeDir: "",
+      createHome: true,
+    }
+  ): Promise<PasswdEntry> {
+    await execFile("useradd", [
+      "--user-group",
+      ...(system ? ["--system"] : []),
+      ...(homeDir ? ["--home-dir", homeDir] : []),
+      ...(createHome ? ["--create-home"] : []),
+      "--root",
+      this.dir,
+      user,
+    ]);
     const passwd = await this.readPasswd();
     const entry = passwd.find((e) => e.name === user);
     if (!entry) {
@@ -79,9 +99,13 @@ export class Alpine {
     return entry;
   }
 
-  async addPackages(packages: string[]): Promise<void> {
+  async actuallyInstallPackages(): Promise<void> {
+    await this.installPackages(this.packages);
+  }
+
+  async installPackages(packages: string[]): Promise<void> {
     logDebug(
-      "addPackages",
+      "installPackages",
       await execFile("apk", [
         "add",
         "--clean-protected",
@@ -91,6 +115,9 @@ export class Alpine {
       ])
     );
   }
+  async addPackages(packages: string[]): Promise<void> {
+    this.packages = this.packages.concat(packages);
+  }
 
   static async makeWorld({
     dir,

index.ts

@@ -41,9 +41,7 @@ async function timed<T>(fn: () => Promise<T>): Promise<T> {
   console.debug(rootfsDir);
   const alpine = await timed(() => Alpine.makeWorld({ dir: rootfsDir }));
 
-  await timed(() =>
-    alpine.addPackages(["helix", "htop", "iproute2-ss", "socat"])
-  );
+  await alpine.addPackages(["helix", "htop", "iproute2-ss", "socat"]);
   await alpine.writeFile(
     "/root/.ash_history",
     `
@@ -60,19 +58,22 @@ socat tcp-listen:80,reuseaddr,fork tcp:localhost:3050 &
   await timed(() => setupGrafana(alpine, runit));
   const kernel = await timed(() => setupKernel(alpine, kernelDir));
 
+  await timed(() => alpine.actuallyInstallPackages());
   const squashfs = path.join(artifactsDir, "image.squashfs");
-  await execFile("mksquashfs", [
-    alpine.dir,
-    squashfs,
-    "-root-mode",
-    "755",
-    "-comp",
-    "zstd",
-    "-Xcompression-level",
-    "3",
-    "-noappend",
-    "-quiet",
-  ]);
+  await timed(() =>
+    execFile("mksquashfs", [
+      alpine.dir,
+      squashfs,
+      "-root-mode",
+      "755",
+      "-comp",
+      "zstd",
+      "-Xcompression-level",
+      "3",
+      "-noappend",
+      "-quiet",
+    ])
+  );
 
   console.timeEnd("Building");
 

kernel.ts

@@ -63,7 +63,7 @@ default=lts
     `features="${features.join(" ")}"`
   );
 
-  await alpine.addPackages([`linux-${kind}`]);
+  await alpine.installPackages([`linux-${kind}`]);
 
   const initramfs = path.join(alpine.dir, `/boot/initramfs-${kind}`);
   const vmlinuz = path.join(alpine.dir, `/boot/vmlinuz-${kind}`);

services/grafana/index.ts

@@ -6,6 +6,7 @@ import { FluentBitParser, runitLokiLogger } from "../../software/fluentbit.js";
 import { loadGrafanaSecretsFile } from "./secrets.js";
 
 const provisioningDir = "/etc/grafana/provisioning/";
+const grafanaHome = "/var/lib/grafana";
 
 // TODO: grafana-image-renderer?
 // /etc/conf.d/grafana
@@ -23,12 +24,14 @@ export async function setupGrafana(
 ): Promise<void> {
   await alpine.addPackages(["grafana"]);
 
-  const passwd = await alpine.readPasswd();
-  const user = passwd.find((e) => e.name === "grafana");
-  assert(!!user, "no existe el usuario grafana");
+  const user = await alpine.userAdd("grafana", {
+    system: true,
+    homeDir: grafanaHome,
+    createHome: false,
+  });
 
   // TODO: data
-  await alpine.fstab.addTmpfs("/var/lib/grafana", {
+  await alpine.fstab.addTmpfs(grafanaHome, {
     uid: user.uid,
     gid: user.gid,
     mode: "700",
@@ -59,7 +62,7 @@ exec chpst -u grafana:grafana grafana-cli --homepath /usr/share/grafana --config
   await runit.addService(
     "grafana",
     `#!/bin/sh
-export GRAFANA_HOME=/var/lib/grafana
+export GRAFANA_HOME='${grafanaHome}'
 
 cd "$GRAFANA_HOME"
 
@@ -80,7 +83,7 @@ async function genConfig(): Promise<string> {
 
 #################################### Paths ####################################
 [paths]
-data = /var/lib/grafana
+data = ${grafanaHome}
 
 # Temporary files in \`data\` directory older than given duration will be removed
 ;temp_data_lifetime = 24h
@@ -88,7 +91,7 @@ data = /var/lib/grafana
 # Directory where grafana can store logs
 ;logs = /var/log/grafana
 
-plugins = /var/lib/grafana/plugins
+plugins = ${grafanaHome}/plugins
 
 # folder that contains provisioning config files that grafana will apply on startup and while running.
 provisioning = ${provisioningDir}