Commit Graph

5 Commits

Author SHA1 Message Date
Dmitry S
a91d493ffc (core) Fix issue with 'UNEXPECTED ORDER OF CALLBACKS' in Client.ts.
Summary:
- Substantial refactoring of the logic when the server fails to send some
  messages to a client.
- Add seqId numbers to server messages to ensure reliable order.
- Add a needReload flag in clientConnect for a clear indication whent the
  browser client needs to reload the app.
- Reproduce some potential failure scenarios in a test case (some of which
  previously could have led to incorrectly ordered messages).
- Convert other Comm tests to typescript.
- Tweak logging of Comm and Client to be slightly more concise (in particular,
  avoid logging sessionId)

Note that despite the big refactoring, this only addresses a fairly rare
situation, with websocket failures while server is trying to send to the
client. It includes no improvements for failures while the client is sending to
the server.

(I looked for an existing library that would take care of these issues. A relevant article I found is https://docs.microsoft.com/en-us/azure/azure-web-pubsub/howto-develop-reliable-clients, but it doesn't include a library for both ends, and is still in review. Other libraries with similar purposes did not inspire enough confidence.)

Test Plan: New test cases, which reproduce some previously problematic scenarios.

Reviewers: paulfitz

Reviewed By: paulfitz

Differential Revision: https://phab.getgrist.com/D3470
2022-06-16 23:51:14 -04:00
Dmitry S
d1c1416d78 (core) Add rules to eslint to better match our coding conventions.
Summary:
We used tslint earlier, and on switching to eslint, some rules were not
transfered. This moves more rules over, for consistent conventions or helpful
warnings.

- Name private members with a leading underscore.
- Prefer interface over a type alias.
- Use consistent spacing around ':' in type annotations.
- Use consistent spacing around braces of code blocks.
- Use semicolons consistently at the ends of statements.
- Use braces around even one-liner blocks, like conditionals and loops.
- Warn about shadowed variables.

Test Plan: Fixed all new warnings. Should be no behavior changes in code.

Reviewers: paulfitz

Reviewed By: paulfitz

Differential Revision: https://phab.getgrist.com/D2831
2021-05-24 12:56:18 -04:00
Paul Fitzpatrick
47ea00dea3 (core) add user and docId to heartbeat logging
Summary: add user and docId to heartbeat logging

Test Plan: checked manually

Reviewers: dsagal

Reviewed By: dsagal

Differential Revision: https://phab.getgrist.com/D2784
2021-04-23 17:33:06 -04:00
Paul Fitzpatrick
e5c24eb5ea (core) revamp user attribute handling
Summary:
This changes how user attributes are loaded.  They are now loaded
directly from sqlite, with per-session caching.  Optimizations
considered but not addressed yet are (1) adding indexes to user attribute
tables and (2) swapping in a thinner sqlite wrapper.

The main benefit of this diff is that changes to user attribute
tables now work.  Clients whose user attributes are not changed
see no effect; clients whose user attributes have changed have
their document reloaded.

For the purposes of testing, the diff includes a tweak to
GristWSConnection to be "sticky" to a specific user when reloading
(and support machinery on the server side to honor that).  Until
now, if a GristWSConnection reloads, it uses whatever the current
default user is in the cookie-based session, which can change.
This was complicating a test where multiple users were accessing
the same document via different clients with occasional document
reloads.

Code for updating when schema or rule changes happen is moved
around but not improved in any meaningful way in this diff.

Test Plan: existing tests pass; extended test

Reviewers: dsagal

Reviewed By: dsagal

Differential Revision: https://phab.getgrist.com/D2685
2020-12-11 15:15:35 -05:00
Paul Fitzpatrick
1654a2681f (core) move client code to core
Summary:
This moves all client code to core, and makes minimal fix-ups to
get grist and grist-core to compile correctly.  The client works
in core, but I'm leaving clean-up around the build and bundles to
follow-up.

Test Plan: existing tests pass; server-dev bundle looks sane

Reviewers: dsagal

Reviewed By: dsagal

Differential Revision: https://phab.getgrist.com/D2627
2020-10-02 13:24:21 -04:00