Go Node and SDK for the NEO blockchain
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Anna Shaleva c5c5e4c208 core: do not panic if transaction with empty script is being serialized
See https://github.com/nspcc-dev/neo-go/pull/2485#discussion_r872695786.

Allows to avoid panic:
```
(18:28:29)[sergio@transient:morph-control-load]% downloads/neofs-adm morph -c configuration/config.yaml init --contracts downloads/neofs-contract-v0.15.1
Stage 1: transfer GAS to alphabet nodes.
Waiting for transactions to persist...
Stage 2: set notary and alphabet nodes in designate contract.
Stage 2: already performed.
Stage 3: deploy NNS contract.
NNS contract is already deployed.
Stage 4: deploy NeoFS contracts.
Alphabet contract #0 is already deployed.
Alphabet contract #1 is already deployed.
Alphabet contract #2 is already deployed.
Alphabet contract #3 is already deployed.
audit contract is already deployed.
balance contract is already deployed.
container contract is already deployed.
neofsid contract is already deployed.
netmap contract is already deployed.
proxy contract is already deployed.
reputation contract is already deployed.
subnet contract is already deployed.
Waiting for transactions to persist...
Stage 4.1: Transfer GAS to proxy contract.
Stage 5: register candidates.
Stage 6: transfer NEO to alphabet contracts.
Stage 7: set addresses in NNS.
NNS: Set alphabet0.neofs -> 2efeb27866fa774ec6bfb43babaadcc7b28f9bb7
NNS: Set alphabet1.neofs -> 5606bc6598a538ac59ded3caa842247b9b26097a
NNS: Set alphabet2.neofs -> 2a8308cfd2706ddd5f67adfdf3954c6836806b5d
NNS: Set alphabet3.neofs -> 718d0459e6787f0f13f1e1898bf2ce6bc4bb452d
NNS: Set audit.neofs -> 54d516b36c3380efa2b2f26bda300b6c6302b8e7
NNS: Set balance.neofs -> 72b3255944524cb822788a7542c9d06cba208c0c
NNS: Set container.neofs -> 20a20f4352a49f161eccb7d5a806fd46dcab81ea
NNS: Set neofsid.neofs -> 04a3a71535689b820093cefe7ae188ed7591ad27
NNS: Set netmap.neofs -> 9a34c97b2ba6bd986fd9140a9c3d59059fa430f4
NNS: Set proxy.neofs -> 4eba34ec016f8709a511b02765a1195e31a921ea
NNS: Set reputation.neofs -> 77b5b2cf596957cc05ca3d57503ef08d72792301
NNS: Set subnet.neofs -> b0abe16bc7f56b2e7e0694ae2b36207c6aaa8636
panic: error serializing *transaction.Transaction: transaction has no script

goroutine 1 [running]:
github.com/nspcc-dev/neo-go/pkg/io.GetVarSize({0xbf6240, 0xc0003634a0})
	github.com/nspcc-dev/neo-go@v0.98.2/pkg/io/size.go:68 +0x6fd
github.com/nspcc-dev/neo-go/pkg/rpc/client.(*Client).AddNetworkFee(0xc0004080c0, 0xc0003634a0, 0x0, {0xc00000e248, 0x1, 0x93})
	github.com/nspcc-dev/neo-go@v0.98.2/pkg/rpc/client/rpc.go:966 +0x6b
github.com/nspcc-dev/neo-go/pkg/rpc/client.(*Client).CreateTxFromScript(0x0, {0x0, 0x0, 0x0}, 0x1, 0x0, 0x0, {0xc0001c7990, 0x1, 0x1})
	github.com/nspcc-dev/neo-go@v0.98.2/pkg/rpc/client/nep17.go:128 +0x345
github.com/nspcc-dev/neofs-node/cmd/neofs-adm/internal/modules/morph.(*initializeContext).sendCommitteeTx(0xc00014a370, {0x0, 0x0, 0x0}, 0xc0016bcf30, 0x2)
	github.com/nspcc-dev/neofs-node/cmd/neofs-adm/internal/modules/morph/initialize.go:336 +0x131
github.com/nspcc-dev/neofs-node/cmd/neofs-adm/internal/modules/morph.(*initializeContext).updateNNSGroup(0xc0001c7c88, {0x13, 0xd3, 0x6b, 0x85, 0x3e, 0x86, 0xbe, 0x77, 0xb7, ...}, ...)
	github.com/nspcc-dev/neofs-node/cmd/neofs-adm/internal/modules/morph/initialize_nns.go:89 +0x134
github.com/nspcc-dev/neofs-node/cmd/neofs-adm/internal/modules/morph.(*initializeContext).setNNS(0xc00014a370)
	github.com/nspcc-dev/neofs-node/cmd/neofs-adm/internal/modules/morph/initialize_nns.go:74 +0x8c5
github.com/nspcc-dev/neofs-node/cmd/neofs-adm/internal/modules/morph.initializeSideChainCmd(0x12a00e0, {0xc22a22, 0x4, 0x4})
	github.com/nspcc-dev/neofs-node/cmd/neofs-adm/internal/modules/morph/initialize.go:94 +0x2bc
github.com/spf13/cobra.(*Command).execute(0x12a00e0, {0xc00013a6c0, 0x4, 0x4})
	github.com/spf13/cobra@v1.1.3/command.go:852 +0x60e
github.com/spf13/cobra.(*Command).ExecuteC(0x129c760)
	github.com/spf13/cobra@v1.1.3/command.go:960 +0x3ad
github.com/spf13/cobra.(*Command).Execute(...)
	github.com/spf13/cobra@v1.1.3/command.go:897
github.com/nspcc-dev/neofs-node/cmd/neofs-adm/internal/modules.Execute(...)
	github.com/nspcc-dev/neofs-node/cmd/neofs-adm/internal/modules/root.go:48
main.main()
	github.com/nspcc-dev/neofs-node/cmd/neofs-adm/main.go:10 +0x25
zsh: exit 2     downloads/neofs-adm morph -c configuration/config.yaml init --contracts
```
2022-05-16 15:19:17 +03:00
.circleci ci: increase output waiting timeout for CircleCI test jobs 2022-04-14 14:50:37 +03:00
.docker .github: add action to build WSC image 2021-11-29 11:11:09 +03:00
.github github: add ability to manually trigger publishing workflow with latest tag 2022-05-07 11:55:06 +03:00
cli [#2442] English Check 2022-05-04 19:48:27 +03:00
config core: change Create[Standard, Multisig]Account prices 2022-05-11 14:21:43 +03:00
docs docs: add Hardforks configuration section 2022-05-12 13:14:28 +03:00
examples examples: update neo-go dependency 2022-05-12 14:35:45 +03:00
internal [#2442] English Check 2022-05-04 19:48:27 +03:00
pkg core: do not panic if transaction with empty script is being serialized 2022-05-16 15:19:17 +03:00
scripts compare-states: add ignore-height flag and some tolerance to diff 2022-05-12 12:18:06 +03:00
.dockerignore Fix build node and docker-image 2019-08-26 19:32:09 +03:00
.gitignore vm: add some Fuzz tests 2022-03-18 16:13:39 +03:00
.gitmodules vm: update json tests to neo3 branch 2020-04-17 11:46:31 +03:00
.golangci.yml .golangci.yml: replace golint with revive 2021-09-14 14:39:23 +03:00
.travis.yml *: drop Go 1.14 2021-08-25 14:59:00 +03:00
CHANGELOG.md Merge pull request #2478 from nspcc-dev/mainnet-fixes 2022-05-12 10:04:53 +03:00
codecov.yml codecov: adjust codecov config and remove CircleCI coverage job 2022-02-03 16:21:15 +03:00
CONTRIBUTING.md [#2442] English Check 2022-05-04 19:48:27 +03:00
Dockerfile workflows: upgrade supported go version 2022-03-18 11:09:30 +03:00
Dockerfile.wsc workflows: upgrade supported go version 2022-03-18 11:09:30 +03:00
go.mod gomod: update interop dependency 2022-05-12 14:32:28 +03:00
go.sum gomod: update interop dependency 2022-05-12 14:32:28 +03:00
LICENSE.md LICENSE.md: add NSPCC copyright 2022-04-04 12:34:18 +03:00
Makefile Makefile: allow to build privnet image for WSC 2022-03-28 15:15:08 +03:00
neo-go.service.template service file templating 2019-11-13 15:05:13 +03:00
README.md [#2442] English Check 2022-05-04 19:48:27 +03:00
ROADMAP.md Merge pull request #2471 from nspcc-dev/0.98.3-fix 2022-05-07 21:04:00 +03:00

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Go Node and SDK for the Neo blockchain.


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Overview

This project aims to be a full port of the original C# Neo project. A complete toolkit for the NEO blockchain, including:

This branch (master) is Neo N3-compatible. For the current Legacy-compatible version please refer to the master-2.x branch and releases before 0.80.0 (0.7X.Y track).

Getting started

Installation

NeoGo is distributed as a single binary that includes all the functionality provided (but smart contract compiler requires Go compiler to operate). You can grab it from releases page, use a Docker image (see Docker Hub for various releases of NeoGo, :latest points to the latest release) or build yourself.

Building

To build NeoGo you need Go 1.16+ and make:

make build

The resulting binary is bin/neo-go.

Building on Windows

To build NeoGo on Windows platform we recommend you to install make from MinGW package. Then, you can build NeoGo with:

make build

The resulting binary is bin/neo-go.exe.

We also recommend you to switch the Windows Firewall off for further NeoGo node run.

Running a node

A node needs to connect to some network, either local one (usually referred to as privnet) or public (like mainnet or testnet). Network configuration is stored in a file and NeoGo allows you to store multiple files in one directory (./config by default) and easily switch between them using network flags.

To start Neo node on a private network, use:

./bin/neo-go node

Or specify a different network with an appropriate flag like this:

./bin/neo-go node --mainnet

Available network flags:

  • --mainnet, -m
  • --privnet, -p
  • --testnet, -t

To run a consensus/committee node, refer to consensus documentation.

Docker

By default, the CMD is set to run a node on privnet. So, to do this, simply run:

docker run -d --name neo-go -p 20332:20332 -p 20331:20331 nspccdev/neo-go

Which will start a node on privnet and expose node's ports 20332 (P2P protocol) and 20331 (JSON-RPC server).

Importing mainnet/testnet dump files

If you want to jump-start your mainnet or testnet node with chain archives provided by NGD, follow these instructions:

$ wget .../chain.acc.zip # chain dump file
$ unzip chain.acc.zip
$ ./bin/neo-go db restore -m -i chain.acc # for testnet use '-t' flag instead of '-m'

The process differs from the C# node in that block importing is a separate mode. After it ends, the node can be started normally.

Running a private network

Refer to consensus node documentation.

Smart contract development

Please refer to neo-go smart contract development workshop that shows some simple contracts that can be compiled/deployed/run using neo-go compiler, SDK and a private network. For details on how Go code is translated to Neo VM bytecode and what you can and can not do in a smart contract, please refer to the compiler documentation.

Refer to examples for more NEO smart contract examples written in Go.

Wallets

NeoGo differs substantially from C# implementation in its approach to wallets. NeoGo wallet is just a NEP-6 file that is used by CLI commands to sign various things. There is no database behind it, the blockchain is the database and CLI commands use RPC to query data from it. At the same time, it's not required to open a wallet on an RPC node to perform various actions (unless your node provides some service for the network like consensus or oracle nodes do).

Developer notes

Nodes have such features as Prometheus and Pprof in order to have additional information about them for debugging.

How to configure Prometheus or Pprof: In config/protocol.*.yml there is

  Prometheus:
    Enabled: true
    Port: 2112

where you can switch on/off and define port. Prometheus is enabled and Pprof is disabled by default.

Contributing

Feel free to contribute to this project after reading the contributing guidelines.

Before starting to work on a certain topic, create a new issue first describing the feature/topic you are going to implement.

Contact

License

  • Open-source MIT