Commit graph

181 commits

Author SHA1 Message Date
Evgenii Stratonikov
4eae55143f core: restrict GAS available for invocation transactions
There are 10 GAS available for free plus any amount of GAS
attached to a transaction.
2020-01-22 14:31:54 +03:00
Evgenii Stratonikov
28183b81d6 mempool: simplify names of exported types
With the move to a separate package, naming can be simplified:
MemPool -> Pool, PoolItem -> Item, PoolItems -> Items.
2020-01-16 10:16:24 +03:00
Evgenii Stratonikov
fed6fba9b6 core: refactor out MemPool 2020-01-16 10:16:24 +03:00
Evgenii Stratonikov
63c56cca5c core: refactor out Block, BlockBase and Header structs
See #597.
2020-01-16 10:16:24 +03:00
Evgenii Stratonikov
637c99eda7 core: simplify newInteropContext 2020-01-10 11:14:29 +03:00
Evgenii Stratonikov
aecdf470e7 cli,pkg: use zap.Logger 2020-01-10 11:14:27 +03:00
Evgenii Stratonikov
714c466c2c core: add ScriptFromWitness function
Extracting verification script from witness became a common task.
This commit adds such a possibility.
2019-12-26 10:49:56 +03:00
Roman Khimov
bf84e1f2fb core: cache top block
Turns out, our dApps use it a lot and we were going to the DB to get it which
is a useless waste of time. Technically we could also remove blockHeight here,
but not doing it at the moment as it's more involved.

It eliminates this time waste from the pprof graph, but doesn't change 1.4M ->
1.5M 100K mainnet block import test case in any noticeable way.
2019-12-23 19:18:12 +03:00
Roman Khimov
a7457d08a1 vm/core: add ID support for SYSCALL, redo interop registration
This solves two problems:
 * adds support for shortened SYSCALL form that uses IDs (similar to #434, but
   for NEO 2.0, supporting both forms), which is important for compatibility
   with C# node and mainnet chain that uses it from some height
 * reworks interop plugging to use callbacks rather than appending to the map,
   these map mangling functions are clearly visible in the VM profiling
   statistics and we want spawning a VM to be fast, so it makes sense
   optimizing it. This change moves most of the work to the init() phase
   making VM setup cheaper.

Caveats:
 * InteropNameToID accepts `[]byte` because that's the thing we have in
   SYSCALL processing and that's the most often usecase for it, it leads to
   some conversions in other places but that's acceptable because those are
   either tests or init()
 * three getInterop functions are: `getDefaultVMInterop`, `getSystemInterop`
   and `getNeoInterop`

Our 100K (1.4M->1.5M) block import time improves by ~4% with this change.
2019-12-19 13:35:42 +03:00
Roman Khimov
0d0a27d271 core: add cachedDao to cache accounts and contracts
Importing 100K blocks starting at 1.4M, before this patch:
real    6m0,356s
user    8m52,293s
sys     0m47,372s

After this patch:
real    4m17,748s
user    6m23,316s
sys     0m37,866s

Almost 30% better.
2019-12-13 19:57:17 +03:00
Roman Khimov
212cf44e26 core: get data from dao in interops
It's more logically correct as Blockchain can be several transactions behind
in terms of its state.
2019-12-13 17:17:14 +03:00
Roman Khimov
09223236f9 core: add Persist() to dao()
Hide its internals a little, which is gonna be useful for future composition.
2019-12-12 21:17:13 +03:00
Roman Khimov
eb1749d190 core: remove persisting from GetValidators()
It's a getter function and even though it's quite fancy with its transactions
processing (for consensus operation) it shouldn't ever change the state of the
Blockchain. If we're to change anything here these changes may conflict with
the actual block processing later or may lead to broken state (if transactions
won't be approved for some reason).
2019-12-12 21:14:33 +03:00
Roman Khimov
c5ed3b788b core: simplify dao creation with newDao() 2019-12-12 21:04:55 +03:00
Roman Khimov
54d888ba70 io: add type-specific read/write methods
This seriously improves the serialization/deserialization performance for
several reasons:
 * no time spent in `binary` reflection
 * no memory allocations being made on every read/write
 * uses fast ReadBytes everywhere it's appropriate

It also makes Fixed8 Serializable just for convenience.
2019-12-12 20:19:50 +03:00
Vsevolod Brekelov
c93a8d2bc4 core: extracted same logic to separate methods 2019-12-11 13:14:45 +03:00
Vsevolod Brekelov
2d42b14a1d core: renames entities-> state and removed State prefix 2019-12-11 13:14:18 +03:00
Vsevolod Brekelov
c7ac4b6dff core: fix encoding and decoding for notification event 2019-12-11 13:05:31 +03:00
Vsevolod Brekelov
ec17654986 core: refactoring blockchain state and storage
add dao which takes care about all CRUD operations on storage
remove blockchain state since everything is stored on change
remove storage operations from structs(entities)
move structs to entities package
2019-12-11 13:05:31 +03:00
Roman Khimov
d0f9a28196 vm/core: improve block import speed with PublicKey caching
This change (closely related to the neo-project/neo#1321 proposal) speeds up
1.4M mainnet blocks import by 30%. Basically, we're eliminating key decoding
for block's multisignature that has the same keys most of the time.

Things I don't like about this patch:
 * yet another parameter for verifyHashAgainstScript()
 * vm keys are not copied in/out

But it's rather simple and solves the problem for this particular case, so I
think it's worth it.
2019-12-10 19:13:29 +03:00
Roman Khimov
f1856bfa8b core/tx: remove publickey indirection from assets and txes
It makes very little sense having pointers here, these structures MUST have
some kind of key and this key is not gonna be wandering somewhere on its
own. Fixes a part of #519.
2019-12-09 18:33:04 +03:00
Roman Khimov
7e371588a7 core/tx: remove one layer of indirection for scripts and inouts
It reduces heap pressure a little for these elements as we don't have to
allocate/free them individually. And they're directly tied to transactions or
block, not being shared or anything like that, so it makes little sense for
them to be pointer-based. It only makes building transactions a little easier,
but that's obviously a minor usecase.
2019-12-09 17:14:10 +03:00
Roman Khimov
e4d821f32d
Merge pull request #546 from nspcc-dev/write-optimizations
Write optimizations
2019-12-06 19:40:38 +03:00
Roman Khimov
9992a98007 core: optimize balance utxo removal
One of my samples had 8 (out of 30) seconds spent here, but values of 100ms
are more typical. After this change it becomes invisible.
2019-12-06 18:46:24 +03:00
Evgenii Stratonikov
7179e4ba9f util: add LE suffix to Uint256 methods 2019-12-06 12:16:55 +03:00
Evgenii Stratonikov
57efad912c util: add LE suffix to Uint160 methods 2019-12-06 12:16:55 +03:00
Vsevolod Brekelov
ff15a0acfd core: add trigger types as constants. Closes #509 2019-12-04 12:27:04 +03:00
Roman Khimov
f48228ef7d
Merge pull request #467 from nspcc-dev/errcheck_297
This patchset closes #297 and #457.
2019-12-03 15:06:11 +03:00
Vsevolod Brekelov
03ff2976ed io: refactoring for using WriteVarBytes instead of WriteLE
goal is to be consistent with C# implementation.
For writing []byte WriteBytes used and for byte - WriteVarByte.
2019-12-03 13:49:33 +03:00
Roman Khimov
2c0ed62680 core: fix blockchain init with (2000*N + 1) header hashes in DB
Stored header count includes block number zero, so it's (height + 1).
2019-11-29 16:26:44 +03:00
Roman Khimov
bb765ccfa7 core: gofmt 2019-11-27 13:27:47 +03:00
Roman Khimov
eb84ae49da
Merge pull request #508 from nspcc-dev/feature/getvalidators_420
core: Implement getvalidators interop
2019-11-22 18:15:08 +03:00
Vsevolod Brekelov
419b031e96 core: add weighted function for validators 2019-11-21 15:41:49 +03:00
Vsevolod Brekelov
672f314be0 core: nit refactoring and add godoc 2019-11-21 15:41:49 +03:00
Vsevolod Brekelov
8ae88593dd core: blockchain fmt 2019-11-21 15:41:49 +03:00
Vsevolod Brekelov
3c4b0e955d core: create blockchain state that represents state of the bc
move some util methods to blockchain state
2019-11-21 15:41:49 +03:00
Vsevolod Brekelov
c80ee952a1 core/crypto: add validators and interop for validators
add processing of validators while block persist;
add validator structure with decoding/encoding;
add validator get from store;
add EnrollmentTX and StateTX processing;
add pubkey decode bytes, unique and contains functions;
2019-11-21 15:23:35 +03:00
Roman Khimov
34e2122e58 core: only check tx against mempool if it's not in the block
Fixes failure to process transaction from the block when it was relayed
initially:

WARN[0788] blockQueue: failed adding block into the blockchain  blockHeight=7270 error="transaction 35088916403e5cf2152e16c3bc6e0fba20c955fba38543b9fa5c50a3d3a4ace5 failed to verify: invalid transaction due to conflicts with the memory pool" nextIndex=7271
WARN[0790] blockQueue: failed adding block into the blockchain  blockHeight=7270 error="transaction 35088916403e5cf2152e16c3bc6e0fba20c955fba38543b9fa5c50a3d3a4ace5 failed to verify: invalid transaction due to conflicts with the memory pool" nextIndex=7271
WARN[0790] blockQueue: failed adding block into the blockchain  blockHeight=7270 error="transaction 35088916403e5cf2152e16c3bc6e0fba20c955fba38543b9fa5c50a3d3a4ace5 failed to verify: invalid transaction due to conflicts with the memory pool" nextIndex=7271
2019-11-20 16:12:40 +03:00
Roman Khimov
1a5731e005 core: rework balance accounting
Store all unspents instead of balance values. Bump store version as this is an
incompatible change.
2019-11-15 22:05:09 +03:00
Roman Khimov
a16c2c3825 core: add NEP5 transfer tracking stub
See #498.
2019-11-15 18:04:59 +03:00
Roman Khimov
5ce269c035 core: change notify implementation to save notifications
Fixes #453 and makes it possible to refer to these notifications later.
2019-11-15 18:04:59 +03:00
Roman Khimov
394346fc26 core: add proper claim transactions processing 2019-11-11 15:35:57 +03:00
Roman Khimov
b05754deac core: add Close() to blockchainer, implement it to properly close chain
Before it the deferred function in Run() was actually never able to properly
close the Store, so we weren't synching the latest state to the disk.
2019-11-08 12:19:54 +03:00
Roman Khimov
c567307748 core: fix potential issue with header list init
If we're to receive some 500 headers (less than `headerBatchCount`) and quit
before receiving more of them we end up with clean `bc.headerList` that will
be inited going backwards to the `targetHash`, but code path doesn't add add
the `targetHash` itself which it should do in this particular case, otherwise
we end with no genesis block hash in the list.
2019-11-06 18:13:45 +03:00
Roman Khimov
b5199625cd core: init genesis block header if there are no other headers in DB
Fixes crash when restarted after the DB initialization and no blocks written
into the DB.
2019-11-06 17:58:19 +03:00
Roman Khimov
c16c2bf102 core: store current header reference on clean init
Missing it the following line could fail on subsequent restarts:

        currHeaderHeight, currHeaderHash, err := storage.CurrentHeaderHeight(bc.store)

if the node was stopped before any headers had been received.
2019-11-06 17:56:06 +03:00
Roman Khimov
9f7625d699 core: don't do useless DB reads if nothing was persisted 2019-11-06 16:10:37 +03:00
Roman Khimov
90d4299f0b core: gofmt blockchain.go 2019-11-06 16:09:45 +03:00
Roman Khimov
2f6e678a19
Merge pull request #463 from nspcc-dev/smartcontract-fixes
Smartcontract RPC fixes
2019-10-29 20:54:46 +03:00
Vsevolod Brekelov
d374175170 monitoring: add prometheus monitoring
add init metrics service which uses prometheus;
add configuration for metrics service;
add monitoring metrics for blockchain,rpc,server;
2019-10-29 20:51:17 +03:00
Roman Khimov
ebc1ba4f38 rpc/core: implement invokescript method, fix #348
Extend Blockchainer with one more method to spawn a VM for test runs and use
it to run scripts. Gas consumption is not counted or limited in any way at the
moment (see #424).
2019-10-29 18:31:39 +03:00
Roman Khimov
a568740f56 core: deduplicate a part of VM setup into spawnVMWithInterops() 2019-10-29 17:10:50 +03:00
Roman Khimov
99bbad331d core: add issue tx processing
Count available asset quantity, match C# code.
2019-10-25 17:20:12 +03:00
Roman Khimov
45cac07643 core: remove transactions from MemPool when they're stored in block
Extend MemPool with Remove() and use it. Fixes #446.
2019-10-24 13:12:02 +03:00
Roman Khimov
1250bf9579
Merge pull request #443 from nspcc-dev/spellcheck
spellcheck and comments fix
2019-10-22 18:01:40 +03:00
Vsevolod Brekelov
8ee421db14 fix spelling and godoc comments 2019-10-22 17:56:03 +03:00
Roman Khimov
3cbb699eb7
Merge pull request #426 from nspcc-dev/logger_247
Change fmt.Println to log, close #247.
2019-10-22 14:41:30 +03:00
Vsevolod Brekelov
e2bfff8666 vm: removed mute mode and pushed logging to upper lvl
VM should be responsible for code execution and in case anyone interested in additional logging or errors they could handle them like we do it iin cli.
2019-10-22 13:44:14 +03:00
Roman Khimov
07c2105aa5 core: log values from the store in persist()
We're about stored values here, so print those, which avoids blocking in
bc.HeaderHeight() and removes duplication between blockHeight and
persistedHeight. Fixes saving the blockchain on exit (deferred function in
Run() blocked in persist()).

Test modification was required because storeBlocks() doesn't actually save
headers and thus TestGetTransaction started to fail on persist().
2019-10-21 14:18:09 +03:00
Roman Khimov
70407f0c19 core: remove unused context parameter from persist() 2019-10-21 14:18:09 +03:00
Roman Khimov
b533dfceba core: don't panic on init when there are less than 2000 hashes
If you're to sync less than 2000 headers no batched header key-value is
gonna be written into the DB and init() would panic because
bc.headerList.Len() would return 0. Use genesis block as a target in this
case.
2019-10-21 08:37:01 +03:00
Roman Khimov
1b5ea67737 core: fix ineffassign suggestion
Goreport:
  Line 467: warning: ineffectual assignment to persisted (ineffassign)
2019-10-17 12:27:15 +03:00
Roman Khimov
2245fedbb1 core: deduplicate state commit methods, use interim MemCachedStore
commit methods duplicated putSmthIntoStore functions, but have MemCachedStore
now that can easily substitute for a Batch, especially given that interop
needs something like that for its storage purposes anyway.
2019-10-16 17:33:45 +03:00
Roman Khimov
fc0031e5aa core: move write caching layer into MemCacheStore
Simplify Blockchain and associated functions, deduplicate code, fix Get() and
Seek() implementations.
2019-10-16 17:33:45 +03:00
Roman Khimov
8926cbe368 core: fix potential data race in logging code
Spotted in CircleCI build with Go 1.12:

WARNING: DATA RACE
Write at 0x00c00011095c by goroutine 88:
  sync/atomic.SwapInt32()
      /usr/local/go/src/runtime/race_amd64.s:249 +0xb
  github.com/CityOfZion/neo-go/pkg/core.(*Blockchain).persist()
      /go/src/github.com/CityOfZion/neo-go/pkg/core/blockchain.go:483 +0x172
  github.com/CityOfZion/neo-go/pkg/core.(*Blockchain).Run.func2()
      /go/src/github.com/CityOfZion/neo-go/pkg/core/blockchain.go:191 +0x50

Previous read at 0x00c00011095c by goroutine 64:
  github.com/CityOfZion/neo-go/pkg/core.(*Blockchain).persist()
      /go/src/github.com/CityOfZion/neo-go/pkg/core/blockchain.go:492 +0x4be
  github.com/CityOfZion/neo-go/pkg/core.(*Blockchain).Run.func2()
      /go/src/github.com/CityOfZion/neo-go/pkg/core/blockchain.go:191 +0x50

Goroutine 88 (running) created at:
  github.com/CityOfZion/neo-go/pkg/core.(*Blockchain).Run()
      /go/src/github.com/CityOfZion/neo-go/pkg/core/blockchain.go:190 +0x264

Goroutine 64 (finished) created at:
  github.com/CityOfZion/neo-go/pkg/core.(*Blockchain).Run()
      /go/src/github.com/CityOfZion/neo-go/pkg/core/blockchain.go:190 +0x264
2019-10-15 18:58:22 +03:00
Roman Khimov
a6610ba082 core: verify blocks, fix #12
This adds the following verifications:
 * merkleroot check
 * index check
 * timestamp check
 * witnesses verification

VerifyWitnesses is also renamed to verifyTxWitnesses here to not confuse it
with verifyBlockWitnesse and to hide it from external access (no users at the
moment).
2019-10-15 18:58:17 +03:00
Roman Khimov
aec6a5f029 core/config: make block and transaction verification configurable
Enable transaction verification for privnets and tests, testnet can't
successfuly verify block number 316711 with it enabled and mainnet stops at
105829.
2019-10-15 12:56:25 +03:00
Roman Khimov
56dcff2894 core: invoke contracts for Invocation TXes
They can have some side-effects that future invocations rely on.
2019-10-15 12:56:25 +03:00
Roman Khimov
74590551c4 core: add some interops
This also changes Verify to VerifyTx and VerifyWitnesses, because there is a
need to pass a block for some interop functions.
2019-10-15 12:56:25 +03:00
Roman Khimov
19fd7f844e core: add GetUnspentCoinState() for future interops 2019-10-15 12:56:25 +03:00
Roman Khimov
bfddf9b3f6 core: implement StorageItem for future interops 2019-10-15 12:56:25 +03:00
Roman Khimov
58d9b79fe3 core: avoid duplicates in GetScriptHashesForVerifyingClaim()
As they can break VerifyWitnesses().
2019-10-15 12:56:25 +03:00
Roman Khimov
96934cfeab core: return error from verifyOutputs()
Make debugging easier.
2019-10-15 12:56:25 +03:00
Roman Khimov
ab4ff79e02 core: fix typo in GetTransactionResults() 2019-10-15 12:56:25 +03:00
Roman Khimov
cffe8d0ee2 core: return error from verifyResults()
Make it easier to find out what the real problem is.
2019-10-15 12:56:25 +03:00
Roman Khimov
16bc5296cb block: return error from Verify
Don't hide real problem behind the bool value. Makes it easier to identify
problems when looking at log messages.
2019-10-15 12:56:25 +03:00
Roman Khimov
258f397b9a core: append transactions to the block in GetBlock()
We want to get a full block, so it has to have transactions
inside. Unfortunately our tests were used to this wrong behavior and utilized
completely bogus transactions without data that couldn't be persisted, so fix
that also.
2019-10-15 12:56:25 +03:00
Roman Khimov
238c590ddb core: fix contract state's Properties to use PropertyState
PublishTX only had one of these flags, but newer contracts (created via the
interop function) can have more and these flags are aggregated into one field
that uses PropertyState enumeration (it's used to publish contract, so
supposedly it's also a nice choice for contract state storage).
2019-10-15 12:56:25 +03:00
Roman Khimov
3ada92944a storage: drop Len from the Batch interface
It's almost meaningless now and we can easily live without it.
2019-10-15 12:56:25 +03:00
Roman Khimov
1bf232ad50 vm: introduce TryBool() for Element and use it in VerifyWitnesses
Script can return non-bool results that can still be converted to bool
according to the usual VM rules. Unfortunately Bool() panics if this
conversion fails which is OK for things done in vm.execute(), but certainly
not for VerifyWitnesses(), thus there is a need for TryBool() that will just
return an error in this case.
2019-10-04 16:13:39 +03:00
Roman Khimov
ceca9cdb67 core/vm: implement contract storage and script retrieval
Fixes script invocations via the APPCALL instruction. Adjust contract state
field types accordingly.
2019-10-04 16:13:39 +03:00
Roman Khimov
b7c1efe7e3 core: fix References() result key type
If the block references two ouputs in some other transaction the code failed
to verify it because of key collision. C# code implements it properly by using
full CoinReference type as a key, so let's do it in a similar fashion.
2019-10-01 13:41:26 +03:00
Roman Khimov
8537700b7b core: sort hashes and witnesses in VerifyWitnesses()
Fixes failure to verify some multi-witnesses transactions in Testnet chain. C#
code contains similar logic.
2019-10-01 13:41:26 +03:00
Roman Khimov
dd0dd2d031 core: add claim-specific GetScriptHashesForVerifying()
Claim transactions have different logic in C# node, so we need to
implement it too. It's not the most elegant way to fix it, but let's make it
work first and then refactor if and where needed. Fixes verification of Claim
transactions.
2019-10-01 13:41:26 +03:00
Roman Khimov
854fb187a3 core: verify transactions in AddBlock() 2019-10-01 13:41:26 +03:00
Roman Khimov
1095abb04c core: fix default asset expiration to match C# code
Fixes bogus verification failures for non-native assets.
2019-10-01 13:41:26 +03:00
Roman Khimov
832c56f97d core: fix DutyFlag check in GetScriptHashesForVerifying()
It's a flag (used by Share and Invoice asset types), so it should be checked
like a flag, the same way C# node does.
2019-10-01 13:41:26 +03:00
Roman Khimov
920d7c610c core: remove blockCache, use MemoryStore, redesign persist()
Commit 578ac414d4 was wrong in that it saved
only a part of the block, so depending on how you use blockchain, you may
still see that the block was not really processed properly. To really fix it
this commit introduces intermediate storage layer in form of memStore, which
actually is a MemoryStore that supports full Store API (thus easily fitting
into the existing code) and one extension that allows it to flush its data to
some other Store.

It also changes AddBlock() semantics in that it only accepts now successive
blocks, but when it does it guarantees that they're properly added into the
Blockchain and can be referred to in any way. Pending block queing is now
moved into the server (see 8c0c055ac657813fe3ed10257bce199e9527d5ed).

So the only thing done with persist() now is just a move from memStore to
Store which probably should've always been the case (notice also that
previously headers and some other metadata was written into the Store
bypassing caching/batching mechanism thus leading to some inefficiency).
2019-09-27 15:42:35 +03:00
Roman Khimov
903173c991 core: fix deadlock in headers list init
This probably is a problem since adc880d323,
because AddHeaders() uses headersOp channel and its reader is only ran in
Run().
2019-09-25 17:52:46 +03:00
Roman Khimov
578ac414d4 core: make unpersisted blocks/txs available in Blockchain
This changes the Blockchain to also return unpersisted (theoretically, verified
in the AddBlock!) blocks and transactions, making Add/Get interfaces
symmetrical. It allows to turn Persist into internal method again and makes it
possible to enable transaction check in GetBlock(), thus fixing #366.
2019-09-25 17:46:28 +03:00
Roman Khimov
679e01bd0f core: implement witness verification logic
Fix #368.
2019-09-24 13:01:54 +03:00
Roman Khimov
4b4bac675b core: don't print persisting errors twice
As they're already printed in the calling goroutine. And they're alse not
always useful when printed by Persist().
2019-09-22 20:08:15 +03:00
Roman Khimov
102c926ef3 core: don't print useless persist messages with nil errors
Errors should be printed only when there are errors.
2019-09-22 20:07:49 +03:00
Vsevolod Brekelov
100fee164b unitTest: reworked RPC unit test
earlier we had an issue with failing test in #353 and other one #305.
Reworked these test to have in-memory database. This led to multiple
changes: made some functions like Hash and Persist public(otherwise
it's not possible to control state of the blockchain); removed
unit_tests storage package which was used mainly for leveldb in unit
tests.
I see these tests not really good since they look like e2e tests and
as for me should be run in separate step against dockerized env or
in case we want to check rpc handler we might want to rework it in order
to have interface for proper unit tests.
As for me this patchset at least makes as safe with not removing totally
previous tests and at the same time CircleCI will be happy now.
2019-09-18 18:21:16 +03:00
Vsevolod Brekelov
adc880d323 blockchain: server runs goroutine instead of blockchain init
rework initBlockChain in order to have controllable way of running
blockchain;
remove context from initBlockChain func;
2019-09-17 15:27:40 +03:00
Roman Khimov
d1a4e43c48 io: redo Serializable to return errors in BinReader/BinWriter
Further simplifies error handling.
2019-09-17 13:21:52 +03:00
Roman Khimov
e299a44983 io: drop Size() method from Serializable and associated
It's no longer needed after the io.GetVarSize() improvement. It's duplicating
a lot of EncodeBinary() logic also.
2019-09-17 13:21:45 +03:00
Roman Khimov
5bf00db2c9 io: move BinReader/BinWriter there, redo Serializable with it
The logic here is that we'll have all binary encoding/decoding done via our io
package, which simplifies error handling. This functionality doesn't belong to
util, so it's moved.

This also expands BufBinWriter with Reset() method to fit the needs of core
package.
2019-09-16 23:39:51 +03:00
Roman Khimov
c98a626871
Merge pull request #399 from nspcc-dev/refactor_store
storage: refactor store, add Close()
2019-09-16 18:59:34 +03:00
Vsevolod Brekelov
264dfef370 storage: close function
add close function to storage interface
add common defer function call which will close db connection
remove context as soon as it's not needed anymore
updated unit tests
2019-09-16 18:52:47 +03:00