Summary:
With this diff, when a user opens a Grist document in a browser, they will be able to view its contents without waiting for the data engine to start up. Once the data engine starts, it will run a calculation and send any updates made. Changes to the document will be blocked until the engine is started and the initial calculation is complete.
The increase in responsiveness is useful in its own right, and also reduces the impact of an extra startup time in a candidate next-generation sandbox.
A small unrelated fix is included for `core/package.json`, to catch up with a recent change to `package.json`.
A small `./build schema` convenience is added to just rebuild the typescript schema file.
Test Plan: added test; existing tests pass - small fixes needed in some cases because of new timing
Reviewers: dsagal
Reviewed By: dsagal
Differential Revision: https://phab.getgrist.com/D3036
Summary:
New environmental variable GOOGLE_DRIVE_SCOPE that modifies the scope
requested for Google Drive integration.
For prod it has value https://www.googleapis.com/auth/drive.file which leaves
current behavior (Grist is allowed only to access public files and for private
files - it fallbacks to Picker).
For staging it has value https://www.googleapis.com/auth/drive.readonly which
allows Grist to access all private files, and fallbacks to Picker only when the file is
neither public nor private).
Default value is https://www.googleapis.com/auth/drive.file
Test Plan: manual and existing tests
Reviewers: dsagal
Reviewed By: dsagal
Subscribers: dsagal
Differential Revision: https://phab.getgrist.com/D3038
Summary:
This adds a `user:delete` target to the `cli.sh` tool. The desired user will be deleted from our database, from sendgrid, and from cognito.
There is code for scrubbing the user from team sites, but it isn't yet activated, I'm leaving finalizing and writing tests for it for follow-up.
Test Plan: tested manually
Reviewers: dsagal
Reviewed By: dsagal
Differential Revision: https://phab.getgrist.com/D3043
Summary:
This removes the need for any information drawn from the content of recent actions when loading a document.
The undo/redo system does need some facts about recent actions up front. But that system has an important restriction: only actions a particular client is known to have generated can be undone by that client.
So in this diff, as we store which client has performed an action, we also store the few pieces of metadata about that action that the undo/redo system needs: `linkId`, `otherId`, `rowIdHint`, `isUndo` fields. These are all small integers (or in one case a boolean).
An existing limitation is that information about which client has performed which action is stored in memory in the worker, and not persisted anywhere. This diff does not change that limitation, meaning that undos continue to not survive a worker transition. A reasonable way to deal with that would be to back the store with redis.
Test Plan: existing tests pass
Reviewers: dsagal
Reviewed By: dsagal
Differential Revision: https://phab.getgrist.com/D3044
Summary: There was a bad regex processing the document url passed to the sandbox.
Test Plan: added test
Reviewers: dsagal
Reviewed By: dsagal
Differential Revision: https://phab.getgrist.com/D3048
Summary:
Tests DocApi endpoints _subscribe and _unsubscribe, including various bad inputs.
Tests that webhooks are sent to a test express server, with retrying on failure, filtered by event type, and waiting for isReadyColumn.
Test Plan: this
Reviewers: paulfitz
Reviewed By: paulfitz
Differential Revision: https://phab.getgrist.com/D3042
Summary:
- Anchor links with row of 'new' could be created but weren't parsed or used
correctly. This fixes it.
- Also adds UIRowId type for row IDs which includes the special 'new' row. It's
already been used in places as `number|'new'`, this diff gives it a name usable in app/common
(it doesn't touch another name, RowId, that's been available in app/client).
Test Plan: Added a test assert for anchor links to new row
Reviewers: alexmojaki
Reviewed By: alexmojaki
Differential Revision: https://phab.getgrist.com/D3039
Summary:
See https://grist.quip.com/VKd3ASF99ezD/Outgoing-Webhooks
- 2 new DocApi endpoints: _subscribe and _unsubscribe, not meant to be user friendly or publicly documented. _unsubscribe should be given the response from _subscribe in the body, e.g:
```
$ curl -X POST -H "Authorization: Bearer 8fd4dc59ecb05ab29ae5a183c03101319b8e6ca9" "http://localhost:8080/api/docs/6WYa23FqWxGNe3AR6DLjCJ/tables/Table2/_subscribe" -H "Content-type: application/json" -d '{"url": "https://webhook.site/a916b526-8afc-46e6-aa8f-a625d0d83ec3", "eventTypes": ["add"], "isReadyColumn": "C"}'
{"unsubscribeKey":"3246f158-55b5-4fc7-baa5-093b75ffa86c","triggerId":2,"webhookId":"853b4bfa-9d39-4639-aa33-7d45354903c0"}
$ curl -X POST -H "Authorization: Bearer 8fd4dc59ecb05ab29ae5a183c03101319b8e6ca9" "http://localhost:8080/api/docs/6WYa23FqWxGNe3AR6DLjCJ/tables/Table2/_unsubscribe" -H "Content-type: application/json" -d '{"unsubscribeKey":"3246f158-55b5-4fc7-baa5-093b75ffa86c","triggerId":2,"webhookId":"853b4bfa-9d39-4639-aa33-7d45354903c0"}'
{"success":true}
```
- New DB entity Secret to hold the webhook URL and unsubscribe key
- New document metatable _grist_Triggers subscribes to table changes and points to a secret to use for a webhook
- New file Triggers.ts processes action summaries and uses the two new tables to send webhooks.
- Also went on a bit of a diversion and made a typesafe subclass of TableData for metatables.
I think this is essentially good enough for a first diff, to keep the diffs manageable and to talk about the overall structure. Future diffs can add tests and more robustness using redis etc. After this diff I can also start building the Zapier integration privately.
Test Plan: Tested manually: see curl commands in summary for an example. Payloads can be seen in https://webhook.site/#!/a916b526-8afc-46e6-aa8f-a625d0d83ec3/0b9fe335-33f7-49fe-b90b-2db5ba53382d/1 . Great site for testing webhooks btw.
Reviewers: dsagal, paulfitz
Reviewed By: paulfitz
Differential Revision: https://phab.getgrist.com/D3019
Summary:
A user without SchemaEdit permission was able to reorder pages, since
this changes _grist_Pages, and that table was left under control of
regular access rules. This diff tightens things up, to require
SchemaEdit for all metadata edits. The one remaining exception is
_grist_Attachments, which needs some reworking to play well with
granular access.
Test Plan: extended test
Reviewers: dsagal
Reviewed By: dsagal
Differential Revision: https://phab.getgrist.com/D3025
Summary:
The import dialog now has an option to 'Update existing records',
which when checked will allow for selection of 1 or more fields
to match source and destination tables on.
If all fields match, then the matched record in the
destination table will be merged with the incoming record
from the source table. This means the incoming values will
replace the destination table values, unless the incoming
values are blank.
Additional merge strategies are implemented in the data
engine, but the import dialog only uses one of the
strategies currently. The others can be exposed in the UI
in the future, and tweak the behavior of how source
and destination values should be merged in different contexts,
such as when blank values exist.
Test Plan: Python and browser tests.
Reviewers: paulfitz
Reviewed By: paulfitz
Subscribers: alexmojaki
Differential Revision: https://phab.getgrist.com/D3020
Summary: This adds a dropdown to the document settings model in staging/dev to set the python engine to Python2 or Python3. The setting is saved in `_grist_DocInfo.documentSettings.engine`.
Test Plan: tested manually for now - separate diff needed to add runsc to jenkins setup and make this testable
Reviewers: dsagal, alexmojaki
Reviewed By: alexmojaki
Differential Revision: https://phab.getgrist.com/D3014
Summary: This tests site deletion with and without a plan.
Test Plan: adding tests
Reviewers: dsagal
Reviewed By: dsagal
Differential Revision: https://phab.getgrist.com/D3017
Summary:
This adds a `site:delete` target to `cli.sh` for deleting sites. Sites should be specified by numeric org id, and for confirmation their name also needs to be given.
All the docs in the site are deleted permanently, and the workspaces, and the site, and the stripe customer (if any).
Test Plan: manual
Reviewers: dsagal
Reviewed By: dsagal
Differential Revision: https://phab.getgrist.com/D3015
Summary:
Moves CSV and XLSX export urls under /download/, and
removes the document title query parameter which is now
retrieved from the backend.
Test Plan: No new tests. Existing tests that verify endpoints still function.
Reviewers: paulfitz
Reviewed By: paulfitz
Differential Revision: https://phab.getgrist.com/D3010
Summary:
The endpoints for exporting CSV and Excel are now under
/api/docs/:docId/ and are forwarded to a doc worker for export.
The Share Menu has been updated to use the new endpoints.
Test Plan: No new tests. Existing tests that verify endpoints work correctly.
Reviewers: paulfitz
Reviewed By: paulfitz
Subscribers: paulfitz
Differential Revision: https://phab.getgrist.com/D3007
Summary:
- Grist document has a associated "locale" setting that affects how currency is formatted.
- Currency selector for number format.
Test Plan: not done
Reviewers: dsagal
Reviewed By: dsagal
Subscribers: paulfitz
Differential Revision: https://phab.getgrist.com/D2977
Summary:
This adds `runsc` and `python3` to the grist-server images. For deployments with GRIST_EXPERIMENTAL_PLUGINS=1 (dev + staging but not prod) a hack is added to use `python3` under `runsc` for documents with a special title (`activate-python3-magic` or similar).
This will simplify experiments on behavior of this configuration under realistic conditions.
Hopefully, before landing this, I'll be able to switch to storing a python flag in a document options cell being added by @georgegevoian in a parallel diff, since using the doc title is super hacky :-).
Test Plan: tested manually on worker built locally
Reviewers: dsagal, alexmojaki
Reviewed By: dsagal, alexmojaki
Subscribers: georgegevoian
Differential Revision: https://phab.getgrist.com/D2998
Summary:
Currently actions blocked early because they could modify the
schema (e.g. changing formulas) do not report memo information
(comments in relevant rules). This diff fixes that by using
more of the same code path in the two situations. It also
adds information about what type of action was blocked to
error messages.
Test Plan: extended a test
Reviewers: dsagal
Reviewed By: dsagal
Differential Revision: https://phab.getgrist.com/D2995
Summary:
Currently, if access rules are set to allow edits unconditionally,
and an owner does "View As" a user who is a viewer only, they will
be allowed to make edits. This catches that condition and adds a
test.
Test Plan: added test
Reviewers: georgegevoian
Reviewed By: georgegevoian
Differential Revision: https://phab.getgrist.com/D2991
Summary:
Decoding large actions is a plausible culprit for hogging CPU time for
certain documents. To begin with, log the time taken for this operation,
so that we can tell if it's a problem in practice.
Test Plan: Should not affect any current behaviors
Reviewers: paulfitz
Reviewed By: paulfitz
Differential Revision: https://phab.getgrist.com/D2989
Summary: This is a documentation update, and version bump on grist-core.
Test Plan: No code changes.
Reviewers: dsagal
Reviewed By: dsagal
Differential Revision: https://phab.getgrist.com/D2982
Summary:
* Remove adjustSession hack, interfering with loading docs under saml.
* Allow the anonymous user to receive an empty list of workspaces for
the merged org.
* Behave better on first page load when org is in path - this used to
fail because of lack of cookie. This is very visible in grist-core,
as a failure to load localhost:8484 on first visit.
* Mark cookie explicitly as SameSite=Lax to remove a warning in firefox.
* Make errorPages available in grist-core.
This changes the default behavior of grist-core to now start off in
anonymous mode, with an explicit sign-in step available. If SAML is not configured,
the sign-in operation will unconditionally sign the user in as a default
user, without any password check or other security. The user email is
taken from GRIST_DEFAULT_EMAIL if set. This is a significant change, but
makes anonymous mode available in grist-core (which is convenient
for testing) and makes behavior with and without SAML much more consistent.
Test Plan: updated test; manual (time to start adding grist-core tests though!)
Reviewers: dsagal
Reviewed By: dsagal
Differential Revision: https://phab.getgrist.com/D2980
Summary:
SAML support had broken due to SameSite changes in browsers. This
makes it work again, and tests it against Auth0 (now owned by Okta).
Logging in and out works. The logged out state is confusing, and may
not be complete. The "Add Account" menu item doesn't work.
But with this, an important part of self-hosting becomes easier.
SAML support works also in grist-core, for site pages, but there
is a glitch on document pages that I'll look into separately.
Test Plan: tested manually
Reviewers: dsagal
Reviewed By: dsagal
Differential Revision: https://phab.getgrist.com/D2976
Summary:
Applies simple data transformations to the existing /data API.
Mimics the Airtable API. Designed in https://grist.quip.com/RZh9AEbPaj8x/Doc-API#FZfACAAZ9a0
Haven't done deletion because it seems like less of a priority and also not fully designed.
Test Plan: Added basic server tests similar to the /data tests. Haven't tested edge cases like bad input.
Reviewers: paulfitz
Reviewed By: paulfitz
Subscribers: dsagal
Differential Revision: https://phab.getgrist.com/D2974
Summary:
Prefix keys of `LinkingState.filterColValues` with `_contains:` when the source column is a ChoiceList or ReferenceList.
This is parsed out to make a boolean `isContainsFilter` which is kept in each value of `QueryRefs.filterTuples` (previously `filterPairs`).
Then when converting back in `convertQueryFromRefs` we construct `Query.contains: {[colId: string]: boolean}`.
Finally `getFilterFunc` uses `Query.contains` to decide what kind of filtering to do.
This is not pretty, but the existing code is already very complex and it was hard to find something that wouldn't require touching loads of code just to make things compile.
Test Plan: Added a new nbrowser test and fixture, tests that selecting a source table by summary tables grouped by a choicelist column, non-list column, and both all filter the correct data.
Reviewers: dsagal
Reviewed By: dsagal
Differential Revision: https://phab.getgrist.com/D2940
Summary:
Move all the plugins python code into the main folder with the core code.
Register file importing functions in the same main.py entrypoint as the data engine.
Remove options relating to different entrypoints and code directories. The only remaining plugin-specific option in NSandbox is the import directory/mount, i.e. where files to be parsed are placed.
Test Plan: this
Reviewers: paulfitz
Reviewed By: paulfitz
Subscribers: dsagal
Differential Revision: https://phab.getgrist.com/D2965
Summary:
Exceptional sessions had lost full read access to documents; this
restores it. Exceptional sessions are used for system actions or
while creating documents.
Test Plan: added test
Reviewers: alexmojaki
Reviewed By: alexmojaki
Differential Revision: https://phab.getgrist.com/D2966
Summary: Importing from google drive from home screen (also for anonymous users)
Test Plan: Browser tests
Reviewers: dsagal, paulfitz
Reviewed By: dsagal
Differential Revision: https://phab.getgrist.com/D2943
Summary:
When importing from url, user types a url for google spreadsheet,
Grist will switch to Google Drive plugin to allow user to choose file manualy.
Test Plan: Browser tests
Reviewers: paulfitz, dsagal
Reviewed By: paulfitz
Differential Revision: https://phab.getgrist.com/D2945
Summary: Deletes code which was previously only used by SharedSharing.ts, which was deleted in D2894
Test Plan: no
Reviewers: paulfitz
Reviewed By: paulfitz
Differential Revision: https://phab.getgrist.com/D2960
Summary:
This adds python2 to the gvisor sandbox image. It can be used instead
of the default python3 by setting PYTHON_VERSION to 2 (or calling run.py with python2).
This is useful for making side-by-side comparisons with code running python3.
Test Plan: manual
Reviewers: alexmojaki
Reviewed By: alexmojaki
Differential Revision: https://phab.getgrist.com/D2957
Summary: Improving error messages that get returned from "Import from URL" plugin.
Test Plan: browser tests
Reviewers: alexmojaki
Reviewed By: alexmojaki
Subscribers: dsagal, alexmojaki
Differential Revision: https://phab.getgrist.com/D2946
Summary:
Processing these calls in the client, rather than passing them on
to the backend, means that access rules are more straightforward to
apply.
An unrelated fix is included to filter _grist_ tables when fetched
individually - metadata could leak through this path.
Test Plan: added tests
Reviewers: dsagal
Reviewed By: dsagal
Differential Revision: https://phab.getgrist.com/D2954
Summary:
* Moves essential plugins to grist-core, so that basic imports (e.g. csv) work.
* Adds support for a `GRIST_SANDBOX_FLAVOR` flag that can systematically override how the data engine is run.
- `GRIST_SANDBOX_FLAVOR=pynbox` is "classic" nacl-based sandbox.
- `GRIST_SANDBOX_FLAVOR=docker` runs engines in individual docker containers. It requires an image specified in `sandbox/docker` (alternative images can be named with `GRIST_SANDBOX` flag - need to contain python and engine requirements). It is a simple reference implementation for sandboxing.
- `GRIST_SANDBOX_FLAVOR=unsandboxed` runs whatever local version of python is specified by a `GRIST_SANDBOX` flag directly, with no sandboxing. Engine requirements must be installed, so an absolute path to a python executable in a virtualenv is easiest to manage.
- `GRIST_SANDBOX_FLAVOR=gvisor` runs the data engine via gvisor's runsc. Experimental, with implementation not included in grist-core. Since gvisor runs on Linux only, this flavor supports wrapping the sandboxes in a single shared docker container.
* Tweaks some recent express query parameter code to work in grist-core, which has a slightly different version of express (smoke test doesn't catch this since in Jenkins core is built within a workspace that has node_modules, and wires get crossed - in a dev environment the problem on master can be seen by doing `buildtools/build_core.sh /tmp/any_path_outside_grist`).
The new sandbox options do not have tests yet, nor does this they change the behavior of grist servers today. They are there to clean up and consolidate a collection of patches I've been using that were getting cumbersome, and make it easier to run experiments.
I haven't looked closely at imports beyond core.
Test Plan: tested manually against regular grist and grist-core, including imports
Reviewers: alexmojaki, dsagal
Reviewed By: alexmojaki
Differential Revision: https://phab.getgrist.com/D2942
Summary:
This makes it possible to set the type of a column to ReferenceList, but the UI is terrible
ReferenceList.ts is a mishmash of ChoiceList and Reference that sort of works but something about the CSS is clearly broken
ReferenceListEditor is just a text editor, you have to type in a JSON array of row IDs. Ignore the value that's present when you start editing. I can maybe try mashing together ReferenceEditor and ChoiceListEditor but it doesn't seem wise.
I think @georgegevoian should take over here. Reviewing the diff as it is to check for obvious issues is probably good but I don't think it's worth trying to land/merge anything.
Test Plan: none
Reviewers: dsagal
Reviewed By: dsagal
Subscribers: georgegevoian
Differential Revision: https://phab.getgrist.com/D2914
Summary:
Fixing two bugs
- Google Auth Endpoint wasn't resolving protocol in a correct way
- Google Auth Popup was navigationg to endpoint url based on home url, which
was diffent from current page origin
Test Plan: n/a
Reviewers: paulfitz
Reviewed By: paulfitz
Subscribers: paulfitz
Differential Revision: https://phab.getgrist.com/D2937
Summary:
This tweaks pre-fork mode to make the user's experience a bit more seamless.
Pre-fork mode is where the user has opened a document with intent to
fork it, but actual forking (with allocation of a new document id)
is postponed until they make their first change.
The tweak makes the user an owner for granular access purposes, if
forking is permitted. So data visible only to owners because of
access rules will be visible to them. As always, any edits would
go to a separate new copy.
A remaining tricky corner is what to do about "View As" functionality
on forks. Fork sharing cannot be controlled, so the "Users -> View As"
functionality isn't available. Perhaps the "Users" button on a fork
could encourage doing a save-copy and inviting users, or offer some
dummy users? In any case, this diff doesn't change anything with
that corner.
Test Plan: added test
Reviewers: dsagal
Reviewed By: dsagal
Differential Revision: https://phab.getgrist.com/D2931
Summary:
Google Auth popup wasn't able to resolve origin from gristConfig.
Moving this reponsability to server side, where it gets calculated from initial request.
Test Plan: n/a
Reviewers: dsagal, paulfitz
Reviewed By: paulfitz
Differential Revision: https://phab.getgrist.com/D2935
Summary:
Implementing export to excel and send to Google Drive feature.
As part of this feature few things were implemented:
- Server side google authentication exposed on url: (docs, docs-s, or localhost:8080)/auth/google
- Exporting grist documents as an excel file (xlsx)
- Storing exported grist document (in excel format) in Google Drive as a spreadsheet document.
Server side google authentication requires one new environmental variables
- GOOGLE_CLIENT_SECRET (required) used by authentication handler
Test Plan: Browser tests for exporting to excel.
Reviewers: paulfitz, dsagal
Reviewed By: paulfitz
Differential Revision: https://phab.getgrist.com/D2924
Summary:
Bundles some new document options into a JSON column.
The icon option is treated somewhat gingerly. It is intended, at
least initially, to store an image thumbnail for a document as a
url to hand-prepared assets (for examples and templates), so it is
locked down to a particular url prefix to avoid opening the door to
mischief.
Test Plan: added test
Reviewers: georgegevoian
Reviewed By: georgegevoian
Differential Revision: https://phab.getgrist.com/D2916
Summary:
The 'user' variable has a similar API to the one from access rules: it
contains properties about a user, such as their full name and email
address, as well as optional, user-defined attributes that are populated
via user attribute tables.
Test Plan: Python unit tests.
Reviewers: alexmojaki, paulfitz, dsagal
Reviewed By: alexmojaki, dsagal
Subscribers: paulfitz, dsagal, alexmojaki
Differential Revision: https://phab.getgrist.com/D2898
Summary:
When redirecting to login, it's important to have a valid session set. This was
done by middleware that only applies to home pages. We need to set session to
live when redirecting in case of doc pages too.
Test Plan: Added a test case for fixed behavior by applying an existing case to doc pages too
Reviewers: paulfitz
Reviewed By: paulfitz
Differential Revision: https://phab.getgrist.com/D2915
Summary:
This applies some mitigations suggested by SQLite authors when
opening untrusted SQLite databases, as we do when Grist docs
are uploaded by the user. See:
https://www.sqlite.org/security.html#untrusted_sqlite_database_files
Steps implemented in this diff are:
* Setting `trusted_schema` to off
* Running a SQLite-level integrity check on uploads
Other steps will require updates to our node-sqlite3 fork, since they
are not available via the node-sqlite3 api (one more reason to migrate
to better-sqlite3).
I haven't yet managed to create a file that triggers an integrity
check failure without also being detected as corruption by sqlite
at a more basic level, so that is a TODO for testing.
Test Plan:
existing tests pass; need to come up with exploits to
actually test the defences and have not yet
Reviewers: dsagal
Reviewed By: dsagal
Differential Revision: https://phab.getgrist.com/D2909
Summary:
Finishing implementation for google drive plugin.
- Refactoring plugin code to make it more robust and to follow grist ux
- Changing the way server hosts untrusted user content, from different domain to different port
Test Plan: Browser tests
Reviewers: dsagal, paulfitz
Reviewed By: paulfitz
Differential Revision: https://phab.getgrist.com/D2881
Summary:
API signature for autocomplete updated to add column ID, which is
necessary for exposing correct types for 'value'.
Test Plan: Unit tests.
Reviewers: alexmojaki
Reviewed By: alexmojaki
Subscribers: jarek, alexmojaki
Differential Revision: https://phab.getgrist.com/D2896
Summary:
In the past, Cognito sign-ins were intended to give authorization to some AWS
services (like SQS); various tokens were stored in the session for this
purpose. This is no longer used. Profiles from Cognito now serve a limited
purpose: first-time initialization of name and picture, and keeping track of
which login method was used. For these remaining needs, ScopedSession is
sufficient.
Test Plan:
Existing test pass. Tested manually that logins work with Google and
Email + Password. Tested manually that on a clean database, name and picture
are picked up from a Google Login.
Reviewers: paulfitz
Reviewed By: paulfitz
Differential Revision: https://phab.getgrist.com/D2907
Test Plan: Checked manually for a long-opening document that the time reported is correct.
Reviewers: paulfitz
Reviewed By: paulfitz
Differential Revision: https://phab.getgrist.com/D2906
Summary:
This switches to using stdin/stdout for RPC calls to the sandbox, rather than specially allocated side channels. Plain text error information remains on stderr.
The motivation for the change is to simplify use of sandboxes, some of which support extra file descriptors and some of which don't.
The new style of communication is made the default, but I'm not committed to this, just that it be easy to switch to if needed. It is possible I'll need to switch the communication method again in the near future.
One reason not to make this default would be windows support, which is likely broken since stdin/stdout are by default in text mode.
Test Plan: existing tests pass
Reviewers: dsagal, alexmojaki
Reviewed By: dsagal, alexmojaki
Differential Revision: https://phab.getgrist.com/D2897
Summary: Removed test/aws/, most of app/server/lib/, 3 dirs in app/lambda/, corresponding tests, and more!
Test Plan: a lot of this is quite the opposite...
Reviewers: dsagal, paulfitz
Reviewed By: dsagal
Differential Revision: https://phab.getgrist.com/D2894