d51db20405
While iterating over map in getPeers() is non-deterministic it's not really random enough for our purposes (usually maps have 2-3 paths through them), we need to fill our peers queues more uniformly. Believe it or not, but it does affect performance metrics, baseline (four nodes, 10 workers): RPS ≈ 7791.675 7996.559 7834.504 7746.705 7891.614 ≈ 7852 ± 1.10% TPS ≈ 7241.497 7711.765 7520.211 7425.890 7334.443 ≈ 7447 ± 2.17% CPU % 29.853 39.936 39.945 36.371 39.999 ≈ 37.2 ± 10.57% Mem MB 2749.635 2791.609 2828.610 2910.431 2863.344 ≈ 2829 ± 1.97% Patched: RPS 8180.760 8137.822 7858.358 7820.011 8051.076 ≈ 8010 ± 2.04% ↑ 2.01% TPS 7819.831 7521.172 7519.023 7242.965 7426.000 ≈ 7506 ± 2.78% ↑ 0.79% CPU % 41.983 38.775 40.606 39.375 35.537 ≈ 39.3 ± 6.15% ↑ 5.65% Mem MB 2947.189 2743.658 2896.688 2813.276 2863.108 ≈ 2853 ± 2.74% ↑ 0.85% |
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| .circleci | ||
| .docker | ||
| .github | ||
| cli | ||
| config | ||
| docs | ||
| examples | ||
| internal | ||
| pkg | ||
| scripts | ||
| .dockerignore | ||
| .gitignore | ||
| .gitmodules | ||
| .golangci.yml | ||
| .travis.yml | ||
| CHANGELOG.md | ||
| CONTRIBUTING.md | ||
| Dockerfile | ||
| go.mod | ||
| go.sum | ||
| LICENSE.md | ||
| Makefile | ||
| neo-go.service.template | ||
| README.md | ||
| ROADMAP.md | ||
Go Node and SDK for the Neo blockchain.
Overview
This project aims to be a full port of the original C# Neo project. A complete toolkit for the NEO blockchain, including:
- Consensus node
- RPC node & client
- CLI tool
- Smart contract compiler
- NEO virtual machine
- Smart contract examples
- Oracle service
- State validation service
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 1.14+ 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
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 (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
- @roman-khimov on GitHub
- @AnnaShaleva on GitHub
- @fyrchik on Github
- Reach out to us on the NEO Discord channel
License
- Open-source MIT