Go Node and SDK for the NEO blockchain
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Roman Khimov e0779f2d6e
Merge pull request #1965 from nspcc-dev/native/remove_nns
native: remove NNS contract
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.circleci circleci/workflows: drop vet run 2021-05-13 00:08:42 +03:00
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.github circleci/workflows: drop vet run 2021-05-13 00:08:42 +03:00
cli cli: use non-native NNS instead of native NNS in NEP-related tests 2021-05-17 22:09:30 +03:00
config core: remove native NNS 2021-05-17 22:22:07 +03:00
docs wallet: rename isdefault to isDefault 2021-05-14 10:31:31 +03:00
examples docs: add NNS to examples documentation 2021-05-17 22:24:58 +03:00
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pkg Merge pull request #1965 from nspcc-dev/native/remove_nns 2021-05-17 22:51:58 +03:00
scripts gendump: fix errcheck warning 2021-05-12 20:18:11 +03:00
.dockerignore Fix build node and docker-image 2019-08-26 19:32:09 +03:00
.gitignore .gitignore: add compiler outputs in example dir 2021-04-06 22:50:42 +03:00
.gitmodules vm: update json tests to neo3 branch 2020-04-17 11:46:31 +03:00
.golangci.yml *: enable godot linter and fix all its warnings 2021-05-12 23:17:03 +03:00
.travis.yml drop support for Go 1.12 2020-08-06 16:29:55 +03:00
CHANGELOG.md CHANGELOG: release 0.94.1 2021-04-08 15:17:15 +03:00
CONTRIBUTING.md *: move all packages from CityOfZion to nspcc-dev 2020-03-03 17:21:42 +03:00
Dockerfile Dockerfile: use make to build neo-go 2021-05-13 17:16:27 +03:00
go.mod jsonpath: use ordered map json unmarshaler 2021-05-13 11:53:49 +03:00
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LICENSE.md LICENSE.md: rename from LICENCE.md 2019-08-20 18:47:08 +03:00
Makefile Makefile: drop vendoring 2021-05-13 17:22:10 +03:00
neo-go.service.template service file templating 2019-11-13 15:05:13 +03:00
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ROADMAP.md CHANGELOG: release 0.94.1 2021-04-08 15:17:15 +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 under active development now (read: won't work out of the box) and aims to be compatible with Neo 3. For the current stable version compatible with Neo 2 please refer to the master-2.x branch and releases before 0.80.0 (0.7X.Y track). Releases starting from 0.90.0 contain Neo 3 code (0.90.0 being compatible with Neo 3 preview2).

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 1.14+ and make:

make build

The resulting binary is bin/neo-go.

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 private network use:

./bin/neo-go node

Or specify a different network with appropriate flag like this:

./bin/neo-go node --mainnet

Available network flags:

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

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 (when they'd be available for 3.0 networks):

$ 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 private network. For details on how Go code is translated to Neo VM bytecode and what you can and can not do in 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 the wallet on RPC node to perform various actions (unless your node is providing some service for the network like consensus or oracle nodes).

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 an new issue first, describing the feature/topic you are going to implement.

Contact

License

  • Open-source MIT