Run the CMS in Deno Deploy

[revgum]

@oscarotero Have you run the CMS in Deno Deploy?

Its unclear to me if CMS Lume adapter would have any way around trying to use Lume to build the site locally. https://github.com/lumeland/cms/blob/main/adapters/lume.ts

The error I'm getting is:

PermissionDenied: Requires write access to '/src/_site/index.html', but the file system on Deno Deploy is read-only.
    at Object.remove (ext:deno_fs/30_fs.js:260:9)
    at https://deno.land/std@0.217.0/fs/empty_dir.ts:26:21
    at Array.map (<anonymous>)
    at emptyDir (https://deno.land/std@0.217.0/fs/empty_dir.ts:23:29)
    at async FSWriter.clear (https://deno.land/x/lume@v2.1.0/core/writer.ts:161:5)
    at async Site.clear (https://deno.land/x/lume@v2.1.0/core/site.ts:473:5)
    at async Site.build (https://deno.land/x/lume@v2.1.0/core/site.ts:483:7)
    at async lume (https://cdn.jsdelivr.net/gh/lumeland/cms@v0.2.9/adapters/lume.ts:27:3)
    at async runCms (https://deno.land/x/lume@v2.1.0/cli/cms.ts:29:15)
    at async file:///src/main.ts:5:1

Ideally, I'd like to run the CMS in Deno Deploy with it configured to use GitHub as the backend. I'm going to use GitHub actions to build the static Lume site and deploy it to a CDN.

I'm thinking about a static adapter only serves the CMS.

[oscarotero]

Lume adapter doesn't work on Deno Deploy because Deno Deploy doesn't have write permissions, so the website cannot be generated.

If you want to host the CMS in a server, I have this script to configure a VPS: https://github.com/lumeland/cms-deploy

We are working also on a Dockerfile (https://github.com/lumeland/cms-deploy/pull/1) but configuring the git part is the challenge.

[revgum]

With my PR, and the example server in the description, I have Lume CMS running on Deno Deploy (configured to use Github with environment variables). https://sad-tiger-94.deno.dev/admin

[oscarotero]

Great, but not sure if this is required. You have an example here: https://github.com/lumeland/cms-demo/blob/main/mod.ts#L48

LumeCMS alone works on Deno Deploy. The Lume adapter is only to run LumeCMS and Lume (the SSG) together to edit content and live-preview the results. And this is what doesn't work on Deno Deploy.

[revgum]

Oh nice! That's exactly what I was looking for, thanks @oscarotero.

[revgum]

In case anyone finds this issue and thread, using the linked solution does not support Lume CMS with Auth configurations, the underlying Hono server doesn't have the associated auth routes included.

[oscarotero]

The example does not have auth configured but you can do it in this way:

const app = cms({
  auth: {
    method: "basic",
    users: {
      user1: "password1",
      user2: "password2",
    },
  },
});

Docs: https://lume.land/cms/configuration/options/#auth

[revgum]

Oh, I mean, if you have auth enabled and configured the server isn't able to process the requests. The errors I get are;

ERROR Error: 2024-03-02T18:16:54.488Z [GET] http://localhost:3000/admin -
    at basicAuth (https://deno.land/x/hono@v4.0.8/middleware/basic-auth/index.ts:62:11)
    at dispatch (https://deno.land/x/hono@v4.0.8/compose.ts:45:23)
    at https://deno.land/x/hono@v4.0.8/compose.ts:18:12
    at https://deno.land/x/hono@v4.0.8/hono-base.ts:356:31
    at Hono.dispatch (https://deno.land/x/hono@v4.0.8/hono-base.ts:367:6)
    at fetch (https://deno.land/x/hono@v4.0.8/hono-base.ts:375:17)
    at ext:deno_http/00_serve.js:455:24
    at ext:deno_http/00_serve.js:689:29
    at eventLoopTick (ext:core/01_core.js:153:7)

I'm looking at how to wire this up properly with the basic Deno.serve API.

[revgum]

I suppose we might have to use Hono with the basic auth middleware in place of Deno.serve to support the CMS configured with basic auth.

[oscarotero]

Hmm, it seems a bug. It's using already Hono auth middleware https://github.com/lumeland/cms/blob/main/core/routes/auth.ts

Let me take a look

[revgum]

This works;

import cms from "./_cms.ts";
import { localIp } from "lume/core/utils/net.ts";
import { log } from "lume/core/utils/log.ts";
import { Hono } from "hono/mod.ts";
import { basicAuth } from "hono/middleware.ts";

const port = 3000;
const basePath = "/admin";

const server = new Hono({
  strict: false,
});

if (cms.options.auth?.method === "basic") {
  const users = Object.entries(cms.options.auth.users).map(
    ([user, pass]) => ({
      username: user,
      password: pass,
    }),
  );

  server.use(
    "*",
    basicAuth({
      ...users.shift()!,
    }, ...users),
  );
}

server.route("*", cms.init());

Deno.serve({
  port,
  handler: server.fetch,
  onListen() {
    const ipAddr = localIp();

    log.info("  CMS server started at:");
    log.info(`  <green>http://localhost:${port}${basePath}</green> (local)`);

    if (ipAddr) {
      log.info(
        `  <green>http://${ipAddr}:${port}${basePath}</green> (network)`,
      );
    }
  },
});

[oscarotero]

Okay, I found the bug. Seems that the onError callback of Hono is intercepting the unauthorized access.

I think it's fixed now. Can you upgrade to v0.3.3 and confirm?

[revgum]

Lemme give that a try!

[revgum]

Works! Thanks for the very quick response and bugfix!