Larry larry0x

The data field in cosmwasm_std::Response is underused. We should use it more! Here's why.

Often we want to program contracts that do this:

call another contract
after the call is completed, handle the response and do some extra actions

For example,

swap some token A to token B at Astroport

Set token creation fee to zero; introduce an alternative spam-prevention mechanism

Authored by: larry0x
Commonwealth discussion

Background

In Cosmos ecosystem there are two prevailing fungible token standards, the native token and the CW20. Osmosis is equipped with a “tokenfactory” module which allows anyone (human users or smart contracts) to mint native tokens. This is a much desired feature, as native token is superior than CW20 for many reasons which I will not cover here.

Given that Osmosis currently has a very low gas price, tokenfactory needs a mechanism to deter spamming, meaning an attacker creating a massive amount of new tokens that take up nodes’ storage space. It does this by charging a fee, currently set at 10 OSMO, whenever a new token is created. This is known as the denom_creation_fee in the code.

ics	title	stage	category	author	created	modified
999	One Channel	draft	IBC/APP	Larry Engineer <[email protected]>	2023-03-02	2023-03-02

	package main

	import (
	"encoding/json"
	"fmt"
	"reflect"

	"cosmossdk.io/simapp"
	"github.com/cosmos/cosmos-sdk/codec"
	codectypes "github.com/cosmos/cosmos-sdk/codec/types"

	//! ```cargo
	//! [dependencies]
	//! bech32 = "0.9"
	//! bip32 = "0.5"
	//! dialoguer = "0.10"
	//! hex = "0.4"
	//! k256 = "0.13"
	//! ripemd = "0.1"
	//! thiserror = "1"
	//! ```

	[global]
	log_level = 'info'

	[mode]

	[mode.clients]
	enabled = true
	refresh = true
	misbehaviour = false

	# ---------------------------------- method 1 ----------------------------------

	git clone https://github.com/cosmos/cosmos-sdk.git
	git clone https://github.com/larry0x/simapp.git

	cd cosmos-sdk
	git checkout v0.47.2
	git subtree split -P simapp -b split

	cd ../simapp

	// This script generates a v1 TextProposal, that is, a v1 proposal with no
	// message.

	const mrc = 23;
	const title = "Add WBTC/OSMO 14d vault tokens as a collateral asset in Mars Farm";

	//------------------------------------------------------------------------------

	const fs = require("fs");

	# ls
	alias ls="ls -avhl --color=auto --group-directories-first"

	# systemd
	alias start="sudo systemctl start"
	alias stop="sudo systemctl stop"
	alias restart="sudo systemctl restart"

	# ports
	alias ports="netstat -tulpn \| sort -t: -k2 -n"

	#!/bin/zsh

	set -e

	# change this to your address!
	delegator="mars1..."

	append-msg() {
	tx=$1
	msgs=$(echo $tx \| jq ".body.messages")