Now we have VerifyTx() and PoolTx() APIs that either verify transaction in
isolation or verify it against the mempool (either the primary one or the one
given) and then add it there. There is no possibility to check against the
mempool, but not add a transaction to it, but I doubt we really need it.
It allows to remove some duplication between old PoolTx and verifyTx where
they both tried to check transaction against mempool (verifying first and then
adding it). It also saves us utility token balance check because it's done by
the mempool anyway and we no longer need to do that explicitly in verifyTx.
It makes AddBlock() and verifyBlock() transaction's checks more correct,
because previously they could miss that even though sender S has enough
balance to pay for A, B or C, he can't pay for all of them.
Caveats:
* consensus is running concurrently to other processes, so things could
change while verifyBlock() is iterating over transactions, this will be
mitigated in subsequent commits
Improves TPS value for single node by at least 11%.
Fixes#667, fixes#668.
It's cached in dbft for a view anyway, so there is no big difference here
from security POV. Lets us squeeze yet another 4% TPS improvement.
Make the system fail if unable to decrypt the key along the way, which is a
part of #1312.
New transactions are added to the chain with blocks. If there is no
transaction X at height N in DAO, it could only be added with block N+1, so
it has to be present there. Therefore we can replace `dao.HasTransaction()`
check with a search through in-block transactions. HasTransaction() is nasty
in that it may add useless load the DB and this code is being run with a big
Blockchain lock held, so we don't want to be delayed here at all.
Improves single-node TPS by ~2%.
The end effect is almost as if `VerifyTransactions: false` was set in the
config, but without actually compromising the guarantees provided by it.
It almost doubles performance for single-mode benchmarks and makes block
processing smoother (more smaller blocks are being produced).
1. `Run()` must be able to continue execution after a breakpoint.
2. VM must stop right before the breakpoint, not after.
3. Initial vm state is NONE, not HALT.
To calculate network fee properly we must know type of every
signer (simple, multisig, contract). Providing scripts is the most
simple and flexible way to know this.
According to manifest, OnPersist.ReturnType is void, so we shouldn't
return anything from it. It's not so important, as we drop this value at
the end of OnPersist invocation.
C# node is quite picky as it expects there to be exactly one value returned,
but our testchain actually adds 4 signatures for multisig cases instead of 3
which makes it technically incompatible with C# node.
GetBlockByIndex handler starts sending blocks right from the start index and
if that index is s.chain.BlockHeight() then we're requesting and receiving a
block we already have.
Turns out, C# node no longer broadcasts an Inv when it's creating a block,
instead it sends a ping and if we're not paying attention to the height
specified there we're technically missing a new block. Of course we'll get it
later after ping timer expiration and regular ping/pong sequence, but that's
delaying it for no good reason.
For proper NEO3 debugger work we should provide namespaces for events
names in .debug.json files. But we don't have namespaces in .yml
configuration files and don't need this information for .manifest.json
generation, so let's just keep namespaces empty. This do not prevents
debugger from accepting our .debug.json files.
Debugger expects it to be ByteArray. C# compiler also compiles it
as `ByteArray` (in both manifest and debug.json).
The previous commit 6a2161207a changed
this line as C# implementation serializes Blockchain.ApplicationExecuted.Stack
as array of stackitem.Item and deserializes it as array of
smartcontract.Parameter.
We currently can't process events in codegen, so we have to provide
them via .yml config file. Do not delete the rest of the code connected
with conversion of MethodDebugInfo.Event into manifest.Event as we have
issue #1038.
As it's returned sorted now. Fixes state change mismatch for
NextValidators. It also partially reverts
2f8e7e4d33 and significantly changes the test
chain as the fees are no longer being sent to the same account.
When calling external contracts we expect exactly 1 value to be on
stack. For methods returning nothing, `Null` value is pushed, otherwise
it is an error.`
We were checking blocked accounts twice which is obviously excessive. We also
have our accounts sorted, so we can rely on that in CheckPolicy(). It also
doesn't make much sense to check MaxBlockSystemFee in Blockchain code, policy
contract can handle that.
It no longer depends on blockchain state and there can't ever be an error, in
fact we can always iterate over signers, so copying these hashes doesn't make
much sense at all as well as sorting arrays in verifyTxWitnesses (witnesses
order must match signers order).
It's not needed any more with Go 1.13 as we have wrapping/unwrapping in base
packages. All errors.Wrap calls are replaced with fmt.Errorf, some strings are
improved along the way.
In Go structs must be copied when used as arguments.
To do so we must clone struct on VM level.
This is done by appending this struct to an intermediate array.
Process `init()` functions after global variables has been processed.
It's body is saved into the `_initialize` method where all
initialization is performed.
Closes#1192
1. We now have CMDGetBlockByIndex, so there's no need to request headers
first when we can just ask for blocks.
2. We don't ask for headers (i.e. we don't send CMDGetHeaders),
consequently, we shouldn't react on CMDHeaders.
3. But we still keep on reacting on CMDGetHeaders command as
there could be a node which needs headers.
It returned an error in case if block wasn't found (it might be when our
chain is lower). Fixed. It also should return all requested blocks, not
the first one.
In 121c9664b we should take into account isValid flag of
NativePolicy contract while retrieving MaxVerificationGas native
policy value. Otherwise we won't be able to get MaxVerificationGas
after the node was restarted, because this value is not truly
stored along with the other native policy values.
This commit fixes bug with headers verification after the node
restarting with an existing storage:
```
2020-08-03T12:52:56.158+0300 WARN failed processing headers {"error": "vm failed to execute the script with error: error encountered at instruction 0 (PUSHDATA1): gas limit is exceeded", "errorVerbose": "vm failed to execute the script with error: error encountered at instruction 0 (PUSHDATA1): gas limit is exceeded\ngithub.com/nspcc-dev/neo-go/pkg/core.(*Blockchain).verifyHashAgainstScript\n\t/home/neospcc/Documents/GitProjects/nspcc-dev/neo-go/pkg/core/blockchain.go:1454\ngithub.com/nspcc-dev/neo-go/pkg/core.(*Blockchain).verifyHeaderWitnesses\n\t/home/neospcc/Documents/GitProjects/nspcc-dev/neo-go/pkg/core/blockchain.go:1517\ngithub.com/nspcc-dev/neo-go/pkg/core.(*Blockchain).verifyHeader\n\t/home/neospcc/Documents/GitProjects/nspcc-dev/neo-go/pkg/core/blockchain.go:1175\ngithub.com/nspcc-dev/neo-go/pkg/core.(*Blockchain).addHeaders\n\t/home/neospcc/Documents/GitProjects/nspcc-dev/neo-go/pkg/core/blockchain.go:484\ngithub.com/nspcc-dev/neo-go/pkg/core.(*Blockchain).AddHeaders\n\t/home/neospcc/Documents/GitProjects/nspcc-dev/neo-go/pkg/core/blockchain.go:453\ngithub.com/nspcc-dev/neo-go/pkg/network.(*Server).handleHeadersCmd\n\t/home/neospcc/Documents/GitProjects/nspcc-dev/neo-go/pkg/network/server.go:454\nruntime.goexit\n\t/usr/local/go/src/runtime/asm_amd64.s:1373"}
```
There are 2 kinds of JSON marshaling:
1. Lossy raw marshaling, when type information is lost and
map keys are expected to be valid utf-8 strings.
2. Almost lossless marshaling, which can handle any non-recursive item.
Interop value preserves only type.
This commit implements the second.
Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
Function name now consists of 3 parts:
1) full package path
2) method receiver type (if any)
3) function name itself .
Fix#1150.
Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
We need to compact our in-memory MPT from time to time, otherwise it quickly
fills up all available memory. This raises two obvious quesions --- when to do
that and to what level do that.
As for 'when', I think it's quite easy to use our regular persistence interval
as an anchor (and it also frees up some memory), but we can't do that in the
persistence routine itself because of synchronization issues (adding some
synchronization primitives would add some cost that I'd also like to avoid),
so do it indirectly by comparing persisted and current height in `storeBlock`.
Choosing proper level is another problem, but if we're to roughly estimate one
full branch node to use 1K of memory (usually it's way less than that) then we
can easily store 1K of these nodes and that gives us a depth of 10 for our
trie.
Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
This was differing from C# notion of PrevHash. It's not a previous root, but
rather a hash of the previous serialized MPTRoot structure (that is to be
signed by CNs).
Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
Because trie size is rather big, it can't be stored in memory.
Thus some form of caching should also be implemented. To avoid
marshaling/unmarshaling of items which are close to root and are used
very frequenly we can save them across the persists.
This commit implements pruning items at the specified depth,
replacing them by hash nodes.
Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
Because there is no distinct type field in JSONized nodes, distinction
is made via payload itself, thus all unmarshaling is done via
NodeObject.
Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
MPT is a trie with a branching factor = 16, i.e. it consists of sequences in
16-element alphabet.
Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
Get 2 contracts in pair which is useful everytime we need to test
syscall with one contract calling the other.
Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
Invoke `_initialize` method on every call if present.
In NEO3 there is no entrypoint and methods are invoked by offset,
thus `Main` function is no longer required.
We still have special `Main` method in tests to simplify them.
Allow to invoke methods by offset:
1. Every invoked contract must have manifest.
2. Check arguments count on invocation.
3. Change AppCall to a regular syscall.
4. Add test suite for `System.Contract.Call`.
Disallow costly verification methods. We put this limit in policy
contract as it may be a subject to change in future.
In fact this value also overrides gas limit for header verification.
Close#1202.
When providing public key as a subslice, it still can be
decoded as a valid key, thus interop will not return an error
but rather push `false` on stack. This test is about providing
invalid key, so ensure this via setting invalid prefix.
Implement 3 new instructions: TRY,ENDTRY,ENDFINALLY.
1. TRY marks the start of the block where exceptions are catched.
It has 2 arguments which are relative offsets of exception handler
and the end of the whole try/catch construction.
2. ENDTRY denotes either end of try or catch block.
3. ENDFINALLY denotes end of finally block which is executed
irregardless of whether an exception has occured.
Part of #1055.
It should have `AllowStates` flag.
Also removed unreachable code: we can't have such situation when
script container is not a transaction in the scope of `CheckWitness`
method because:
1. Blocks have their own implementation of CheckWitness for
internal usage (it's (bc *Blockchain) verifyHeaderWitnesses method).
2. For the outside calls of System.Runtime.CheckWitness interop (e.g.
calls from smart-contract) script container is always a transaction.
Part of #1055.
Split methods, as they have a lot of common code. This also fixex nil
error of storageGetReadOnlyContext in case when contract does not have
storage.
We can't lock them (or there will be a deadlock), but we need to fix this:
fatal error: concurrent map iteration and map write
goroutine 1 [running]:
runtime.throw(0xdec086, 0x26)
/usr/lib64/go/1.12/src/runtime/panic.go:617 +0x72 fp=0xc02fec2bf8 sp=0xc02fec2bc8 pc=0x42d932
runtime.mapiternext(0xc02fec2d40)
/usr/lib64/go/1.12/src/runtime/map.go:860 +0x597 fp=0xc02fec2c80 sp=0xc02fec2bf8 pc=0x40efe7
github.com/nspcc-dev/neo-go/pkg/network.(*Server).Shutdown(0xc0000fc160)
/home/rik/dev/neo-go2/pkg/network/server.go:194 +0x238 fp=0xc02fec2db0 sp=0xc02fec2c80 pc=0xa89da8
github.com/nspcc-dev/neo-go/cli/server.startServer(0xc0000fcc60, 0x0, 0x0)
/home/rik/dev/neo-go2/cli/server/server.go:399 +0x7a9 fp=0xc02fec3820 sp=0xc02fec2db0 pc=0xae2079
...
Fixes#1144. It's quite simple approach, we just update balance info right
upon contract migration. It will slow down migration transactions, but it
takes about 1-2 seconds to Seek through balances at mainnet's 3.8M, so the
approach should still work good enough. The other idea was to make lazy
updates (maintaining contract migration map), but it's more complicated to
implement (and implies that a balance get might also do a write).
There also is a concern about memory usage, it can give a spike of some tens
of megabytes, but that also is considered to be acceptable.
Part of #1055.
We should check contract scripthash against the one provided in manifest
and manifest groups. We shouldn't put on stack anything after return.
And ofcourse, we mast not destroy the old contract at the end, as
`contractDestroy` removes all storage items associated with the
old contract ID (which equals to the new contract ID). We just remove
old contract state - it's enough.
Part of #1055.
There'll be a lot of interops which result with a struct on stack instead
of interop interface, and sometimes their names are the same, so it's
unrelyable to take into account interop name only and don't pay
attention to it's API (package).
Also sort syscalls by package and name.
GetScriptContainer() interop can try to get this transaction and this attempt
will lead to hash calculation with transaction serialization, but transaction
can't be successfully serialized if it doesn't have a script set, so this
makes test invocations fail.
Now we have not only Random EC curve, but also Koblitz curve, so
it will be useful to have information about the curve for each
particular EC point. ecdsa.PublicKey has this information.
We were accepting transactions with zero system fee, but we shouldn't do
that. Also, transaction's verification execution has to be limited by network
fee.
GetValidators without parameter is called upon DBFT initialization and it
should receive validators for the next block (that will create it),
parameterized GetValidators is used for NextConsensus calculation where we
need a list for the current state of the chain.
NextBlockValidators are updated before the new block persist, so we need to
use GetValidators to get the list corresponding to the current state of the
chain.
Part of #1133
It will help us to use big.Int to store amount of NEP5 tokens. As far as
big.Int doesn't have constant size, we shouldn't use `NEP5TransferSize`
constant anymore.
The script is passed as a hex string, but no one should care. The hash is a
hex-encoded LE value, but no one should care either. Hex might change to
base64, LE to BE, no one outside these functions should care about that.
Add ability to generate NEO3-compatable *.manifest.json into compiler.
This file represets contract manifest and includes ABI information, so
we don't need to create separate *.abi.json file. NEO3 debugger also
needs *.manifest.json only. So, switched from *.abi.json to
*.manifest.json file.
In order to avoid dependency cycle at the next commits:
imports github.com/nspcc-dev/neo-go/pkg/config
imports github.com/nspcc-dev/neo-go/pkg/wallet
imports github.com/nspcc-dev/neo-go/pkg/vm
imports github.com/nspcc-dev/neo-go/pkg/smartcontract/nef
imports github.com/nspcc-dev/neo-go/pkg/config
When CN is not up to date with the network is synchonizes blocks first and
only then starts consensus process. But while synchronizing it receives
consensus payloads and tries to process them even though messages reader
routine is not started yet. This leads to lots of goroutines waiting to send
their messages:
Jun 25 23:55:53 nodoka neo-go[32733]: goroutine 1639919 [chan send, 4 minutes]:
Jun 25 23:55:53 nodoka neo-go[32733]: github.com/nspcc-dev/neo-go/pkg/consensus.(*service).OnPayload(0xc0000ecb40, 0xc005bd7680)
Jun 25 23:55:53 nodoka neo-go[32733]: #011/go/src/github.com/nspcc-dev/neo-go/pkg/consensus/consensus.go:329 +0x31b
Jun 25 23:55:53 nodoka neo-go[32733]: github.com/nspcc-dev/neo-go/pkg/network.(*Server).handleConsensusCmd(...)
Jun 25 23:55:53 nodoka neo-go[32733]: #011/go/src/github.com/nspcc-dev/neo-go/pkg/network/server.go:687
Jun 25 23:55:53 nodoka neo-go[32733]: github.com/nspcc-dev/neo-go/pkg/network.(*Server).handleMessage(0xc0000ba160, 0x1053260, 0xc00507d170, 0xc005bdd560, 0x0, 0x0)
Jun 25 23:55:53 nodoka neo-go[32733]: #011/go/src/github.com/nspcc-dev/neo-go/pkg/network/server.go:806 +0xd58
Jun 25 23:55:53 nodoka neo-go[32733]: github.com/nspcc-dev/neo-go/pkg/network.(*TCPPeer).handleConn(0xc00507d170)
Jun 25 23:55:53 nodoka neo-go[32733]: #011/go/src/github.com/nspcc-dev/neo-go/pkg/network/tcp_peer.go:160 +0x294
Jun 25 23:55:53 nodoka neo-go[32733]: created by github.com/nspcc-dev/neo-go/pkg/network.(*TCPTransport).Dial
Jun 25 23:55:53 nodoka neo-go[32733]: #011/go/src/github.com/nspcc-dev/neo-go/pkg/network/tcp_transport.go:38 +0x1ad
Jun 25 23:55:53 nodoka neo-go[32733]: goroutine 1639181 [chan send, 10 minutes]:
Jun 25 23:55:53 nodoka neo-go[32733]: github.com/nspcc-dev/neo-go/pkg/consensus.(*service).OnPayload(0xc0000ecb40, 0xc013bb6600)
Jun 25 23:55:53 nodoka neo-go[32733]: #011/go/src/github.com/nspcc-dev/neo-go/pkg/consensus/consensus.go:329 +0x31b
Jun 25 23:55:53 nodoka neo-go[32733]: github.com/nspcc-dev/neo-go/pkg/network.(*Server).handleConsensusCmd(...)
Jun 25 23:55:53 nodoka neo-go[32733]: #011/go/src/github.com/nspcc-dev/neo-go/pkg/network/server.go:687
Jun 25 23:55:53 nodoka neo-go[32733]: github.com/nspcc-dev/neo-go/pkg/network.(*Server).handleMessage(0xc0000ba160, 0x1053260, 0xc01361ee10, 0xc01342c780, 0x0, 0x0)
Jun 25 23:55:53 nodoka neo-go[32733]: #011/go/src/github.com/nspcc-dev/neo-go/pkg/network/server.go:806 +0xd58
Jun 25 23:55:53 nodoka neo-go[32733]: github.com/nspcc-dev/neo-go/pkg/network.(*TCPPeer).handleConn(0xc01361ee10)
Jun 25 23:55:53 nodoka neo-go[32733]: #011/go/src/github.com/nspcc-dev/neo-go/pkg/network/tcp_peer.go:160 +0x294
Jun 25 23:55:53 nodoka neo-go[32733]: created by github.com/nspcc-dev/neo-go/pkg/network.(*TCPTransport).Dial
Jun 25 23:55:53 nodoka neo-go[32733]: #011/go/src/github.com/nspcc-dev/neo-go/pkg/network/tcp_transport.go:38 +0x1ad
Jun 25 23:55:53 nodoka neo-go[32733]: goroutine 39454 [chan send, 32 minutes]:
Jun 25 23:55:53 nodoka neo-go[32733]: github.com/nspcc-dev/neo-go/pkg/consensus.(*service).OnPayload(0xc0000ecb40, 0xc014fea680)
Jun 25 23:55:53 nodoka neo-go[32733]: #011/go/src/github.com/nspcc-dev/neo-go/pkg/consensus/consensus.go:329 +0x31b
Jun 25 23:55:53 nodoka neo-go[32733]: github.com/nspcc-dev/neo-go/pkg/network.(*Server).handleConsensusCmd(...)
Jun 25 23:55:53 nodoka neo-go[32733]: #011/go/src/github.com/nspcc-dev/neo-go/pkg/network/server.go:687
Jun 25 23:55:53 nodoka neo-go[32733]: github.com/nspcc-dev/neo-go/pkg/network.(*Server).handleMessage(0xc0000ba160, 0x1053260, 0xc0140b2ea0, 0xc014fe0ed0, 0x0, 0x0)
Jun 25 23:55:53 nodoka neo-go[32733]: #011/go/src/github.com/nspcc-dev/neo-go/pkg/network/server.go:806 +0xd58
Jun 25 23:55:53 nodoka neo-go[32733]: github.com/nspcc-dev/neo-go/pkg/network.(*TCPPeer).handleConn(0xc0140b2ea0)
Jun 25 23:55:53 nodoka neo-go[32733]: #011/go/src/github.com/nspcc-dev/neo-go/pkg/network/tcp_peer.go:160 +0x294
Jun 25 23:55:53 nodoka neo-go[32733]: created by github.com/nspcc-dev/neo-go/pkg/network.(*TCPTransport).Dial
Jun 25 23:55:53 nodoka neo-go[32733]: #011/go/src/github.com/nspcc-dev/neo-go/pkg/network/tcp_transport.go:38 +0x1ad
Luckily it doesn't break synchronization completely as eventually connection
timers fire, the node breaks all connections, create new ones and these new
ones request blocks successfully until another consensus payload stalls them
too. In the end the node reaches synchronization, message processing loop
starts and releases all of these waiting goroutines, but it's better for us to
avoid this happening at all.
This also makes double-starting a no-op which is a nice property.
Using view number from the recovery message is just plain wrong, it's gonna be
higher than our current view and these messages will be treated as coming from
the future, even though they have their original view number included.
Implement (*Param).GetBoolean() for converting parameter to bool value.
It is used for verbosity flag and is false iff it is either zero number
or empty sting.
This error message makes no sense when shutting down the server:
2020-06-25T19:29:53.251+0300 ERROR failed to start RPC server {"error": "http: Server closed"}
And ListenAndServer is documented to always return non-nil error one of which
is http.ErrServerClosed. This should also fix the following test failure:
==================
WARNING: DATA RACE
Read at 0x00c000254243 by goroutine 49:
testing.(*common).logDepth()
/usr/local/go/src/testing/testing.go:665 +0xa1
testing.(*common).Logf()
/usr/local/go/src/testing/testing.go:658 +0x8f
testing.(*T).Logf()
<autogenerated>:1 +0x75
go.uber.org/zap/zaptest.testingWriter.Write()
/go/pkg/mod/go.uber.org/zap@v1.10.0/zaptest/logger.go:130 +0x11f
go.uber.org/zap/zaptest.(*testingWriter).Write()
<autogenerated>:1 +0xa9
go.uber.org/zap/zapcore.(*ioCore).Write()
/go/pkg/mod/go.uber.org/zap@v1.10.0/zapcore/core.go:90 +0x1c3
go.uber.org/zap/zapcore.(*CheckedEntry).Write()
/go/pkg/mod/go.uber.org/zap@v1.10.0/zapcore/entry.go:215 +0x1e7
go.uber.org/zap.(*Logger).Error()
/go/pkg/mod/go.uber.org/zap@v1.10.0/logger.go:203 +0x95
github.com/nspcc-dev/neo-go/pkg/rpc/server.(*Server).Start()
/go/src/github.com/nspcc-dev/neo-go/pkg/rpc/server/server.go:179 +0x5c5
Previous write at 0x00c000254243 by goroutine 44:
testing.tRunner.func1()
/usr/local/go/src/testing/testing.go:900 +0x353
testing.tRunner()
/usr/local/go/src/testing/testing.go:913 +0x1bb
Goroutine 49 (running) created at:
github.com/nspcc-dev/neo-go/pkg/rpc/server.initClearServerWithInMemoryChain()
/go/src/github.com/nspcc-dev/neo-go/pkg/rpc/server/server_helper_test.go:69 +0x305
github.com/nspcc-dev/neo-go/pkg/rpc/server.initServerWithInMemoryChain()
/go/src/github.com/nspcc-dev/neo-go/pkg/rpc/server/server_helper_test.go:78 +0x3c
github.com/nspcc-dev/neo-go/pkg/rpc/server.testRPCProtocol()
/go/src/github.com/nspcc-dev/neo-go/pkg/rpc/server/server_test.go:805 +0x53
github.com/nspcc-dev/neo-go/pkg/rpc/server.TestRPC.func1()
/go/src/github.com/nspcc-dev/neo-go/pkg/rpc/server/server_test.go:793 +0x44
testing.tRunner()
/usr/local/go/src/testing/testing.go:909 +0x199
Goroutine 44 (finished) created at:
testing.(*T).Run()
/usr/local/go/src/testing/testing.go:960 +0x651
github.com/nspcc-dev/neo-go/pkg/rpc/server.TestRPC()
/go/src/github.com/nspcc-dev/neo-go/pkg/rpc/server/server_test.go:792 +0x5d
testing.tRunner()
/usr/local/go/src/testing/testing.go:909 +0x199
==================
Emit CONVERT for converting between different types. NeoVM behavior is
different from that of Go (e.g. assertions of `int` and `uint32` are
equivalent).
