AKC-MAMBA manuals

I. Installation Instructions

1. Prerequisites

Before you begin, you should confirm that you have installed all the prerequisites below on the platform where you will be running AKC-Mamba.

a. Install pip3

If you have not installed pip3, use the following command to install:

curl "https://bootstrap.pypa.io/get-pip.py" -o "get-pip.py"
python3 get-pip.py --user

For checking version :

pip3 --version

2. Install AKC-Mamba

a. Install AKC-Mamba from pip package

You can use the following command:

pip3 install akc-mamba

After install successfuly, you can get help by command:

mamba --help

b. Install and run from source code

Install required Python3 modules with

pip3 install -r requirements.txt

Use akc-mamba using python3 command:

python3 mamba.py --help

3. Deploy and bootstrap network with CLI

a. Prepare environment

We now can use the Mamba tool to prepare required helm and k8s components

mamba environment

After running this command, the program will ask you to fill in some of the most necessary information of creating a blockchain network:

• Cluster name: The name of the cluster network you created in step Setup an AWS EKS cluster. Default: cluster-mamba-example
• Kubenetes type: Currently akc-mamba is supporting kubenetes of two types: eks and minikube. The default is eks
• EFS infomation: After you have entered the Kubenetes type, mamba will automatically search your k8s network for information about efs. If you have EFS installed before, the system will automatically update the config file located at ~/.akachain/akc-mamba/mamba/config/.env. If not, you need to fill in the information EFS SERVER based on the installation step Setup a Network File System. If the k8s type is minikube then you do not need to enter this information.
• Important Note: You can check and update configuration parameters in ~/.akachain/akc-mamba/mamba/config/.env, the file content is pretty much self-explained.

b. Deploy and bootstrap network

mamba start

The mamba start command executes a series of sub commands that installs various network components. For more information on each command for individual components, please refer to help section

mamba --help

To terminate the network, just run

mamba terminate

II. Development Guide

1. Project structure

Mamba makes use of Click_, an elegant python package for creating command line interfaces. The project structure is depicted in the tree below.

.
├── command_group_1
│   ├── commands.py
│   ├── __init__.py
│
├── utils
│   ├── __init__.py
│   ├── kube.py
├── settings
│   ├── settings.py
├── mamba.py

There are 4 main components:

• mamba.py : The bootstrap instance module of Mamba
• settings : Contains global variables that are shared accross all sub modules
• command_group : Each command group is separated into its own directory.
• utils : helper functions that must be initialized via settings.py

2. Coding Convention

Please follow PEP8 - Style guide for Python Code.

Another example can be found here

There are several notes that are different with other languages

Function names should be lowercase, with words separated by underscores as necessary to improve readability.

Camel case is for class name

3. Logging instruction

A snake must know how hiss ... or sometimes rattle.

Normally we can just use echo to print out message during execution However:

• It is mandatory to hiss when there is error.
• also, rattle is needed when a snake meet something ... at the beginning or at the end of an execution.

For more information about logging, please follow the standard convention in mamba/utils/hiss.py