gristlabs_grist-core

Author SHA1 Message Date

Author	SHA1	Message	Date
Dmitry S	4d9bbf6263	(core) Exit more cleanly on unhandled errors, and handle errors writing to Clients. Summary: - Node has a strong recommendation to assume bad state and exit promptly on unhandled exceptions and rejections. We follow it, and only make an effort to clean up before exiting, and to log the error in a more standard way. - The only case seen in recent month of an unhandled rejection was for attempting to write overly large JSON to a Client websocket. Ensure that's handled, and add a test case that artificially reproduces this scenario. Test Plan: Added a test case for failing write to Client, and a test case that unhandled errors indeed kill the server but with an attempt at cleanup. Reviewers: georgegevoian Reviewed By: georgegevoian Differential Revision: https://phab.getgrist.com/D4124	10 months ago
Dmitry	c9489e4a61	Fix ManyFetches test, and include into grist-core a needed upgrade to the 'ws' package. (#614 ) This is a follow-up fix to `526a5df157`.	1 year ago
Dmitry S	526a5df157	(core) Manage memory used for websocket responses to reduce the risk of server crashes. Summary: - Implements MemoryPool for waiting on memory reservations. - Uses MemoryPool to control memory used for stringifying JSON responses in Client.ts - Limits total size of _missedMessages that may be queued for a particular client. - Upgrades ws library, which may reduce memory usage, and allows pausing the websocket for testing. - The upgrade changed subtle behavior corners, requiring various fixes to code and tests. - dos.ts: - Includes Paul's fixes and updates to the dos.ts script for manual stress-testing. - Logging tweaks, to avoid excessive dumps on uncaughtError, and include timestamps. Test Plan: - Includes a test that measures heap size, and fails without memory management. - Includes a unittest for MemoryPool - Some cleanup and additions to TestServer helper; in particular adds makeUserApi() helper used in multiple tests. - Some fixes related to ws upgrade. Reviewers: paulfitz Reviewed By: paulfitz Differential Revision: https://phab.getgrist.com/D3974	1 year ago

Dmitry S

(core) Exit more cleanly on unhandled errors, and handle errors writing to Clients.

Summary:
- Node has a strong recommendation to assume bad state and exit promptly on
  unhandled exceptions and rejections. We follow it, and only make an effort to
  clean up before exiting, and to log the error in a more standard way.

- The only case seen in recent month of an unhandled rejection was for
  attempting to write overly large JSON to a Client websocket. Ensure that's
  handled, and add a test case that artificially reproduces this scenario.

Test Plan:
Added a test case for failing write to Client, and a test case that unhandled
errors indeed kill the server but with an attempt at cleanup.

Reviewers: georgegevoian

Reviewed By: georgegevoian

Differential Revision: https://phab.getgrist.com/D4124

Dmitry

c9489e4a61

Fix ManyFetches test, and include into grist-core a needed upgrade to the 'ws' package. (#614 )

This is a follow-up fix to 526a5df157.

Dmitry S

526a5df157

(core) Manage memory used for websocket responses to reduce the risk of server crashes.

Summary:
- Implements MemoryPool for waiting on memory reservations.
- Uses MemoryPool to control memory used for stringifying JSON responses in Client.ts
- Limits total size of _missedMessages that may be queued for a particular client.
- Upgrades ws library, which may reduce memory usage, and allows pausing the websocket for testing.
  - The upgrade changed subtle behavior corners, requiring various fixes to code and tests.

- dos.ts:
  - Includes Paul's fixes and updates to the dos.ts script for manual stress-testing.
  - Logging tweaks, to avoid excessive dumps on uncaughtError, and include timestamps.

Test Plan:
- Includes a test that measures heap size, and fails without memory management.
- Includes a unittest for MemoryPool
- Some cleanup and additions to TestServer helper; in particular adds makeUserApi() helper used in multiple tests.
- Some fixes related to ws upgrade.

Reviewers: paulfitz

Reviewed By: paulfitz

Differential Revision: https://phab.getgrist.com/D3974

3 Commits (95c0441d84051c34019e3cb21479cb53b31c437a)