astromesh-demo

Install and start the "fluxd" chain, a Cosmos chain with EVM, WASM, and SVM integrated

Setup chain

There are basically two options:

Option 1: Use Docker

./start-docker.sh

Option 2: Don't have Docker? Install dependencies and run the binary directly:

# install vm libs & fluxd binary
./install.sh

# v0.3.1
fluxd version

# start the chain
fluxd start

Run examples

After bringing up the chain, install golang here as examples are written in go

https://go.dev/doc/install

Now you're ready to run the examples.

This repo contains counter contract/program as examples, which supports:

• A count() that increases the counter by one (counter += 1)
• A get() (EVM) that returns the current counter's value

EVM

Deploy contract

yes 12345678 | go run examples/evm/deploy/deploy.go

Execute contract to increase the counter

yes 12345678 | go run examples/evm/execute/execute.go

Query contract for counter value

yes 12345678 | go run examples/evm/query/query.go

SVM

Deploy program

yes 12345678 | go run examples/svm/deploy/deploy.go

Execute program to increase the value of counter account

yes 12345678 | go run examples/svm/execute/execute.go

Query program for counter value, as SVM only has accounts, then query the counter account's value

yes 12345678 | go run examples/svm/query/query.go

How to compile contract/programs

This guide provides steps to build manually without installing dependencies. We will provide guides using CLI tools later.

EVM

1. Visit Remix IDE, and create a new contract, click "File Explorer" > "Contracts" > "Create New File"

2. Copy contract at examples/evm/contract/counter.sol. You can modify it at this step if needed

3. Navigate to the Solidity Compiler tab on the left panel > Click "Compile" > Click "Compilation Details" > Click "Download" (in the top right panel)

4. After download, move it to examples/evm/build/compData.json

Note: In the example, we've already built the contract so you don't need to follow any of above steps unless you want to try another

SVM

1. Visit Solana Playground, and create a new project:

• Click the "+" button.

• Name the project counter

• Select the Anchor framework.

Copy sample program at examples/svm/counter_program/lib.rs into src/lib.rs file. You can modify it at this step if needed

2. Navigate to the Build & Deploy tab on the left panel.

For initial build:

• Click "Build". This will generate a new keypair and update the program ID.

For subsequent builds:

• To generate a new program ID, click on "Program ID", then "New", and select "Generate" before building.

3. Download the artifacts:

Keypair: Navigate to "Program ID" and click "Export". Copy the keypair into examples/svm/build/counter-contract-keypair.json

Binary: Navigate to "Program Binary" and click "Export". Copy the binary into examples/svm/build/counter-contract.so

IDL: Navigate to "IDL" and click "Export". We don't use IDL in examples for now but will instruct how to use it with go later

Note: In the example, we've already built the program so you don't need to follow any of above steps unless you want to try another