Polymesh Test Compose

This repo contains the setup to run a local single-node fork of a Polymesh network, based off a fork of one of our networks.

This is intended to be used for local development or CI integration test purposes.

Prerequisite

• docker

• docker-compose

Usage

To start a local node

• Start a node:

docker-compose up -d

To create a snapshot for CI/CD

1. Checkout to the desired branch on your local clone of Polymesh.

2. Follow the instructions on Polymesh repository to build a node locally.

3. Locate the executable build in target/release/polymesh. This will be used later to create a snapshot.

4. Clone maxsam4/fork-off-substrate and install dependencies

   git clone https://github.com/maxsam4/fork-off-substrate.git
   cd fork-off-substrate
   npm i

5. Create a folder called data inside the top folder (fork-off-substrate).

   mkdir data

6. Copy the executable/binary of Polymesh node inside the data folder and rename it to binary.

7. Copy the runtime WASM blob of Polymesh to the data folder and rename it to runtime.wasm. To get the WASM blob, compile your Polymesh and look for ./target/release/wbuild/polymesh-runtime-develop/polymesh_runtime_develop.compact.wasm

8. Run the script using the correct rpc url

    ```bash
    HTTP_RPC_ENDPOINT=http://78.47.38.110:9933 npm start
    ```
   

9. You should have the genesis file for the Polymesh inside the data folder. It will be called fork.json.

10. The fork.json file obtained from the repo can be saved under the snapshots directory and optionally referenced during runs like so:

SNAPSHOT_NAME=<file_name> docker-compose up -d

• A custom polymesh node version can also be provided like so:

POLYMESH_VERSION=<version> docker-compose up -d

The chain should be accessible through ws://localhost:9944