get websocketfs to mount even "on my laptop", i.e., for some reason allowOther isn't supported, and it's better to work without root being allowed (which I think we don't need), then to mysteriously fail

Author: williamstein

src/compute/compute/dev/README.md

@@ -3,11 +3,14 @@ The scripts here are helpful for developing the compute\-server manager, which i
 1. Create the directory /tmp/user and make sure you can read it. Maybe even mount it from the target project.
 
 2. The conf/ directory here has the same files as on /cocalc/conf in an actual compute\-server, except:
-     - replace api_server by something like `http://localhost:5000/6659c2e3-ff5e-4bb4-9a43-8830aa951282/port/5000`, where the port is what you're using for your dev server and the project id is of your dev server. The point is that we're going to connect directly without going through some external server.
+     - replace api_server by something like `http://127.0.0.1:5000/6659c2e3-ff5e-4bb4-9a43-8830aa951282/port/5000`, where the port is what you're using for your dev server and the project id is of your dev server. The point is that we're going to connect directly without going through some external server.
      - api_key: the one from an actual server will get deleted when you turn that server off, so make a different project level api key.
 
-   Type `tar xvf conf.tar` to get a template for the conf directory.  You will need to change the contents
-   of all the files you get, as mentioned above!
+   Type `tar xvf conf.tar` to get a template for the conf directory.  
+   You will need to change the contents of all the files you get, as 
+   mentioned above!  Also, regarding the api_server, be especially careful
+   about ipv4 versus ipv6, e.g., use 127.0.0.1 instead of localhost to
+   nail down the protocol.
 
 This is potentially confusing, and when developing this it was 10x worse... Maybe you'll be confused for 2 hours instead of 2 days.
 

src/compute/compute/dev/start-filesystem.js

@@ -58,8 +58,9 @@ async function main() {
     });
     unmount = exports.fs.unmount;
   } catch (err) {
-    console.log("something went wrong ", err);
+    console.trace("something went wrong ", err);
     exitHandler();
+    return;
   }
 
   const info = () => {

src/compute/compute/lib/filesystem.ts

@@ -11,7 +11,6 @@ import { mount } from "websocketfs";
 import getLogger from "@cocalc/backend/logger";
 import { project } from "@cocalc/api-client";
 import { serialize } from "cookie";
-import { join } from "path";
 import { API_COOKIE_NAME } from "@cocalc/backend/auth/cookie-names";
 import syncFS from "@cocalc/sync-fs";
 import {
@@ -100,7 +99,7 @@ export async function mountProject({
     // Ping to start project so it's possible to mount.
     await pingProjectUntilSuccess(project_id);
 
-    const remote = join(getProjectWebsocketUrl(project_id), "websocketfs");
+    const remote = getProjectWebsocketUrl(project_id) + "/websocketfs";
     log("connecting to ", remote);
     const headers = { Cookie: serialize(API_COOKIE_NAME, apiKey) };
     // SECURITY: DO NOT log headers and connectOptions, obviously!
@@ -139,7 +138,7 @@ export async function mountProject({
         progress: 30,
       });
 
-      ({ unmount } = await mount({
+      const websocketfsMountOptions = {
         remote,
         path: homeMountPoint,
         ...options,
@@ -163,7 +162,21 @@ export async function mountProject({
         readTrackingExclude: exclude,
         // metadata file
         metadataFile,
-      }));
+      };
+
+      log("websocketfs -- mount options", websocketfsMountOptions);
+
+      try {
+        ({ unmount } = await mount(websocketfsMountOptions));
+      } catch (err) {
+        log("failed trying to mount -- ", err);
+        log(
+          "try again without allowOther, since some versions of FUSE do not support this option",
+        );
+        websocketfsMountOptions.mountOptions.allowOther = false;
+        ({ unmount } = await mount(websocketfsMountOptions));
+      }
+
       pingInterval = setInterval(async () => {
         try {
           await project.ping({ project_id });