c12da50f9b
Fix race condition
...
Without this patch, it was possible for two transactions with the same
'from' address to drive its balance below zero. With the patch, we'll
hold a write lock from just before we verify sufficient funds until
after those funds are deducted from the account.
2018-04-05 22:30:25 -06:00
41e8500fc5
Break up process_verified_transaction()
2018-04-05 22:29:13 -06:00
f4466c8c0a
Change for cuda verify integration
2018-04-05 20:00:44 -07:00
01326936e6
Expire all transactions after some amount of time
...
Reject old transactions so that we can calculate an upper bound
for memory usage, and therefore ensure the server won't slow
down over time to crash due to memory exhaustion.
2018-04-05 10:26:45 -06:00
c960e8d351
Reject transactions with a `last_id` that isn't from this ledger
...
Before this patch, a client could put any value into `last_id` and
was primarily there to ensure the transaction had a globally unique
signature. With this patch, the server can use `last_id` as an
indicator of how long its been since the transaction was created.
The server may choose to reject sufficiently old transactions so
that it can forget about old signatures.
2018-04-05 09:54:03 -06:00
8d425e127b
Update benchmark to avoid write locks in sig duplicate detection
2018-04-04 17:29:22 -06:00
3cfb07ea38
Sort signatures by last_id
...
This will allow for additional concurrency as well as give the server
a means of garbage-collecting old signatures.
2018-04-04 17:06:31 -06:00
76679ffb92
Per-cell locking
...
This allows us to use read-locks for balances most of the time. We
only lock the full table if we need to add one.
2018-04-04 16:31:13 -06:00
dc2ec925d7
Better test
2018-04-04 16:01:43 -06:00
014bdaa355
Add benchmark for parallel transaction processing
2018-04-04 12:43:27 -06:00
0c60fdd2ce
Make accountant thread-safe
...
Before this change, parallel transaction processing required locking
the full accountant. Since we only call one method,
process_verified_transaction, the global lock equates to doing no
parallelization at all. With this change, we only lock the data that's
being written to.
2018-04-04 12:33:03 -06:00
c323bd3c87
Fix clippy warnings
2018-04-03 09:55:33 -06:00
2f80747dc7
Move tests
...
After we restructured for parallel verification, the tests here
were unreferenced by the accountant, but still meaningful to
transaction verification.
2018-04-02 21:45:21 -06:00
49708e92d3
Use last_id instead of seed
...
It doesn't really matter, but was confusing since the seed points
to an entry before the mint's deposit.
2018-04-02 15:06:42 -06:00
daadae7987
Move replaying ledger out of accountant
2018-04-02 14:51:55 -06:00
2b788d06b7
Move the historian up to accountant_skel
2018-04-02 14:41:07 -06:00
90cd9bd533
Move balance check so that log_* methods are only used to add logging
2018-04-02 14:14:49 -06:00
d63506f98c
No longer allow deposits outside the constructor
2018-04-02 14:00:42 -06:00
17de6876bb
Add simpler accountant constructor
2018-04-02 13:51:44 -06:00
3abe305a21
Move reserve_signatures into accountant
...
Reasons Transaction signatures need to be unique:
1. guard against duplicates
2. accountant uses them as IDs to link Witness signatures to transactions via the
`pending` hash map
2018-04-02 09:38:36 -06:00
46e8c09bd8
Revoke API access to first_id
2018-04-02 09:30:10 -06:00
ef169a6652
94: source doc review
2018-03-30 10:43:38 -07:00
b8cf5f9427
Fix transaction logging
2018-03-29 13:50:32 -06:00
22f5985f1b
Do request verification in parallel, and then process the verified requests
2018-03-29 13:18:08 -06:00
55179101cd
Add more documentation
2018-03-29 12:20:54 -06:00
ddb21d151d
Nightly rustfmt
...
Format code with the nightly version of rustfmt, which sorts imports.
2018-03-26 22:03:28 -06:00
117ab0c141
Clippy review
2018-03-22 14:50:24 -06:00
60524ad5f2
Clippy review
2018-03-22 14:38:06 -06:00
383d445ba1
Clippy review
2018-03-22 14:15:29 -06:00
8295cc11c0
Move JSON printing up the stack
2018-03-20 23:15:44 -06:00
9a7cac1e07
Use the Entry API to remove the double lookup
2018-03-20 18:07:54 -06:00
c584a25ec9
Move complete_transaction from method to function
...
So that we can hold separate mutable references to the pending queue
and the map of balances.
2018-03-20 17:47:57 -06:00
4da89ac8a9
Cleanup naming
2018-03-20 16:53:41 -06:00
f7032f7d9a
Cleanup: replace bool retval with is_complete() method
2018-03-20 16:52:47 -06:00
6be3d62d89
Remove Action from spending plans
2018-03-20 15:43:07 -06:00
4379fabf16
PlanEvent -> Witness
...
The term used by the Simplicity smart contract language
2018-03-20 15:25:50 -06:00
64af37e0cd
logger -> recorder
...
Free up namespace for a traditional runtime logger.
2018-03-19 10:16:21 -06:00
265f41887f
asset -> tokens
2018-03-19 10:03:41 -06:00
f4e0d1be58
Make conditions explicit in races
...
And boot recursive spending plans. That path required heap allocations.
Since we don't have a need for this generality right now, reduce the
language to the smallest one that can pass our test suite.
2018-03-17 20:43:05 -06:00
e5bae0604b
Specialize transaction assets to i64
...
Proof-of-history is generic, but now that we're using it entirely
for tokens, we can specialize the type and start doing more interesting
things than just Eq and Serialize operations.
2018-03-17 19:56:15 -06:00
e7da083c31
Move spending plans to their own crate
2018-03-17 19:56:15 -06:00
45765b625a
Don't let users accidentally burn their funds either
2018-03-11 12:04:49 -06:00
aa0a184ebe
Ensure the server isn't passed a Plan that spends more than is bonded
2018-03-11 11:53:45 -06:00
0eb3669fbf
cleanup timestamp processing
2018-03-11 00:30:01 -07:00
30449b6054
cleanup sig processing
2018-03-11 00:11:08 -07:00
f5f71a19b8
First go at smart contracts
...
Needs lots of cleanup.
2018-03-10 22:00:48 -07:00
9d77fd7eec
Store only spending plans, not full transactions
2018-03-10 18:35:10 -07:00
8c40d1bd72
Move spending endpoints into expressions
2018-03-10 17:41:18 -07:00
7a0bc7d888
Move smart contract fields into their own struct
2018-03-10 16:55:39 -07:00
49281b24e5
Move Tick out of Event
...
Every Entry is now a Tick and the entries contain events.
2018-03-09 17:22:17 -07:00
Greg Fitzgerald
Stephen Akridge
Jackson Sandland