Commit graph

25 commits

Author SHA1 Message Date
Conrad Dean
3547cfcd16 fix weird params mis-matches with the params macro 2019-07-22 22:20:14 -04:00
Conrad Dean
4e9d6b3f58 help compiler with an annotation on the outside of an expression instead of halfway through the middle of an expression 2019-07-22 09:10:49 -04:00
Conrad Dean
76ae972e2e fix for rusqlite Result api 2019-07-22 08:58:19 -04:00
Conrad Dean
b6b316953e seems to resolve some compiler errors 2019-07-17 11:46:47 -04:00
Conrad Dean
3d965fdf6e try fixing build by upgrading rusqlite to 0.19 2019-07-17 10:59:38 -04:00
Grisha Kruglov
b22b29679b
Basic sync support (#563) r=nalexander
* Pre: remove remnants of 'open_empty'

* Pre: Cleanup 'datoms' table after a timeline move

Since timeline move operations use a transactor, they generate a
"phantom" 'tx' and a 'txInstant' assertion. It is "phantom" in a sense
that it was never present in the 'transactions' table, and is entirely
synthetic as far as our database is concerned.
It's an implementational artifact, and we were not cleaning it up.

It becomes a problem when we start inserting transactions after a move.
Once the transactor clashes with the phantom 'tx', it will retract the
phantom 'txInstant' value, leaving the transactions log in an incorrect state.

This patch adds a test for this scenario and elects the easy way out: simply
remove the offending 'txInstant' datom.

* Part 1: Sync without support for side-effects

A "side-effect" is defined here as a mutation of a remote state as part
of the sync.

If, during a sync we determine that a remote state needs to be changed, bail out.

This generally supports different variations of "baton-passing" syncing, where clients
will succeed syncing if each change is non-conflicting.

* Part 2: Support basic "side-effects" syncing

This patch introduces a concept of a follow-up sync. If a sync generated
a "merge transaction" (a regular transaction that contains assertions
necessary for local and remote transaction logs to converge), then
this transaction needs to be uploaded in a follow-up sync.

Generated SyncReport indicates if a follow-up sync is required.

Follow-up sync itself is just a regular sync. If remote state did not change,
it will result in a simple RemoteFastForward. Otherwise, we'll continue
merging and requesting a follow-up.

Schema alterations are explicitly not supported.

As local transactions are rebased on top of remote, following changes happen:
- entids are changed into tempids, letting transactor upsert :db/unique values
- entids for retractions are changed into lookup-refs if we're confident they'll succeed
-- otherwise, retractions are dropped on the floor

* Post: use a macro for more readable tests

* Tolstoy README
2018-09-07 19:18:20 -07:00
Grisha Kruglov
6160dd59f7 Pre: use 'db/syncable' feature; derive serialization for PartitionMap 2018-08-20 18:23:46 -07:00
Grisha Kruglov
9e8292e68b Allow 'sqlcipher' feature for all uses of rusqlite
This also patches our CI test script to only run "--feature sqlcipher"
tests on sub-crates which expose this feature (i.e. themselves rely on rusqlite).
2018-08-20 16:55:34 -07:00
Grisha Kruglov
1e488d720b Post: Use a single implementation of bail macro 2018-08-09 13:16:05 -07:00
Grisha Kruglov
c8e6a511f4 Pre: Move tolstoy/errors into tolstoy-traits 2018-08-09 13:16:05 -07:00
Grisha Kruglov
cebb85a7fe Pre: Move db/errors.rs into db_traits 2018-08-09 13:16:05 -07:00
Grisha Kruglov
d0214fad7d Pre: Move core/types.rs into core_traits 2018-08-09 13:16:05 -07:00
Grisha Kruglov
a57ba5d79f Pre: Move Entid and KnownEntid into core_traits 2018-08-09 13:16:05 -07:00
Grisha Kruglov
675a865896
Extract and improve test macros (#787) r=nalexander
* Part 1: Extract low-level test framework into mentat_db::debug for re-use.

* Part 2: Improve assert_matches!.

This corrects an incorrect pattern: a conversion method taking &self
but returning an owned value should be named like `to_FOO(&self) -> FOO`.  (A
reference-to-reference conversion should be named like `as_FOO(&self)
-> &FOO`.  A consuming conversion should be named like `into_FOO(self)
-> FOO`.)

In addition, this pushes the conversion via `to_edn` into the
`assert_matches!` macro, which lets consumers get a real data
structure (say, `Datoms`) and use it directly before or after
`assert_matches!`.  (Currently, consumers get back `edn::Value`
instances, which aren't nearly as pleasant to use as real data
structures.)

Co-authored-by: Grisha Kruglov <gkruglov@mozilla.com>

* Part 3: Use mentat_db::debug framework in Tolstoy crate.

The advantage of this approach is that compiling Tolstoy (or anything
that's not db, really) can be quite a bit faster than compiling db.
2018-07-16 13:58:34 -07:00
Nick Alexander
8725bad18c Pre: Fix error printing rusqlite::Error. 2018-06-30 14:58:23 -07:00
Grisha Kruglov
8af5288a60 Use TolstoyError for tolstoy's Results; wrap tolstoy's dependency errors r=nalexander
This is inline with the rest of mentat, and helps with upcoming tolstoy work.
2018-06-29 00:47:19 -04:00
Grisha Kruglov
4e46adeba1 Convert tolstoy/ to failure. 2018-06-20 14:42:36 -07:00
Grisha Kruglov
36d455150d
Disable TLS support, add links to issues for TODOs (#573) r=grisha/self
Landing this now to unblock Android builds of mentat until the cross-compilation of dependencies is figured out.
2018-02-28 15:54:46 -08:00
Richard Newman
5e50d2a9b4 Update to rusqlite 0.13. 2018-02-22 11:41:57 -08:00
Grisha Kruglov
93e5dff9c8
Revised uploader flow (battle-tested); CLI support for sync (#557) r=rnewman 2018-02-16 01:44:28 -08:00
Richard Newman
2ac7a1b1de Add a feature flag to control the use of rusqlite's bundled SQLite. r=emily
You can use this in conjunction with setting SQLITE3_LIB_DIR to control which SQLite is used.

See https://github.com/jgallagher/rusqlite for more.

Also add recent contributors to the authors array.
2018-02-13 08:25:58 -08:00
Grisha Kruglov
84f29676e8
"Unchanged server" uploader flow (#543) r=rnewman
* Remove unused struct from tx_processor

* Derive serialize & deserialize for TypedValue

* First pass of uploader flow + feedback
2018-02-09 09:55:19 -08:00
Grisha Kruglov
d848d954cf Issue 508 - Iterating transcation processor r=rnewman
Review comments
2018-02-06 12:24:12 -08:00
Thom
9740cafdbd Automatically remove trailing whitespace from text files. (#527) r=rnewman
This was done using the following shell script:

```
find . -type f -not -path "*target*" \
       '(' -name '*.rs' -o -name '*.md' -o -name '*.toml' ')' -print0 | \
    xargs -0 sed -i '' -E 's/[[:space:]]*$//'
```

Which is admittedly imperfect, but manages to hit everything that was a problem in this repo.
2018-01-19 21:21:04 -06:00
Grisha Kruglov
c61bc79b99 Sync metadata schema and SyncMetadataClient. (#502) r=rnewman 2017-12-13 14:19:05 -06:00