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87 lines
3.8 KiB
Markdown
87 lines
3.8 KiB
Markdown
# Hot Pocket Consensus Engine
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## What's here?
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*In development*
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A C++ version of hotpocket designed for production envrionments, original prototype here: https://github.com/codetsunami/hotpocket
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[Hot Pocket Wiki](https://github.com/HotPocketDev/core/wiki/Hot-Pocket-Wiki)
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## Libraries
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* Crypto - Libsodium https://github.com/jedisct1/libsodium
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* Websockets - Boost|Beast https://github.com/boostorg/beast
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* RapidJSON - http://rapidjson.org
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* P2P Protocol - https://github.com/protocolbuffers/protobuf
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## Steps to setup Hot Pocket
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#### Install Libsodium
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Instructions are based on [this](https://libsodium.gitbook.io/doc/installation).
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1. Download and extract Libsodium 1.0.18 from [here](https://download.libsodium.org/libsodium/releases/libsodium-1.0.18-stable.tar.gz).
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2. Navigate to the extracted libsodium directory in a terminal.
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3. Run `./configure`
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4. Run `make && make check`
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5. Run `sudo make install`
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#### Install Boost
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Following Instructions are based on Boost [getting started](https://www.boost.org/doc/libs/1_71_0/more/getting_started/unix-variants.html#prepare-to-use-a-boost-library-binary)
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1. Download and extract boost 1.71 package from [here](https://www.boost.org/users/history/version_1_71_0.html).
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2. Navigate to the extracted boost directory in a terminal.
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3. Run `./bootstrap.sh`
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4. Run `sudo ./b2 install` (This will compile and install boost libraries into your `/usr/local/lib`)
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#### Install RapidJSON
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1. Download and extract RapidJSON 1.1 source from [here](https://github.com/Tencent/rapidjson/archive/v1.1.0.tar.gz).
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2. Navigate to the extracted directory.
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3. Run `sudo cp -r include/rapidjson /usr/local/include/`
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#### Install Protocol buffers
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Instructions are based on [this](https://github.com/protocolbuffers/protobuf/tree/master/src).
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1. Download and extract Protobuf 3.10.0 from [here](https://github.com/protocolbuffers/protobuf/releases/download/v3.10.0/protobuf-cpp-3.10.0.tar.gz).
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2. Navigate to the extracted Protobuf directory in a terminal.
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3. Run `./configure`
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4. Run `make && make check`
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5. Run `sudo make install`
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##### Compiling Protocol buffers message definitions
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When you make a change to `message.proto` defnition file, you need to run this:
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`protoc -I=./src/p2p --cpp_out=./src/p2p ./src/p2p/message.proto`
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#### Run ldconfig
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`sudo ldconfig`
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This will update your library cache and avoid potential issues when running your compiled C++ program which links to newly installed libraries.
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#### Install CMAKE
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If you use apt, run `sudo apt install cmake` or follow [this](https://cmake.org/install/).
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#### Build and run Hot Pocket
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1. Navigate to hotpocket repo root.
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1. Run `cmake .` (You only have to do this once)
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1. Run `make` (Hot Pocket binary will be created as `./build/hpcore`)
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1. Refer to [Running Hot Pocket](https://github.com/HotPocketDev/core/wiki/Running-Hot-Pocket) in the Wiki.
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Refer to [Hot Pocket Wiki](https://github.com/HotPocketDev/core/wiki/Hot-Pocket-Wiki) for more info.
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## Code structure
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Code is divided into subsystems via namespaces.
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**conf::** Handles contract configuration. Loads and holds the central configuration object. Used by most of the subsystems.
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**crypto::** Handles cryptographic activities. Wraps libsodium and offers convenience functions.
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**proc::** Handles contract process execution and managing user/SC I/O and npl I/O. Makes use of **usr** and **p2p**.
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**usr::** Handles user connections. Makes use of **crypto** and **sock**.
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**p2p::** Handles peer-to-peer connections and message exchange between nodes. Makes use of **crypto** and **sock**.
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**cons::** Handles consensus and proposal rounds. Makes use of **usr**, **p2p** and **proc**
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**sock::** Handles generic web sockets functionality. Mainly acts as a wrapper for boost/beast.
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**util::** Contains shared data structures/helper functions used by multiple subsystems. |