Using Injective Queries and Messages

This guide provides a comprehensive overview of how to interact with Injective's modules and queries in CosmWasm using Any messages and queries. The older injective-cosmwasm package, which relied on JSON-encoded messages, is no longer maintained and may become outdated. This guide focuses on the recommended approach using protobuf-encoded Any messages and queries, which is more efficient and aligned with modern CosmWasm standards.

What are Any Messages in CosmWasm?

In CosmWasm, Any messages are part of the CosmosMsg enum, allowing you to send messages wrapped in a protobuf Any type supported by the chain. They replace the deprecated Stargate messages (still available under the stargate feature flag) with improved naming and syntax. Any messages are feature-gated with cosmwasm_2_0, meaning they require a chain running CosmWasm 2.0 which is supported by Injective. Here’s a snippet of the CosmosMsg definition:

pub enum CosmosMsg<T = Empty> {
    // ...
    #[cfg(feature = "cosmwasm_2_0")]
    Any(AnyMsg),
    // ...
}

pub struct AnyMsg {
    pub type_url: String,
    pub value: Binary,
}

The type_url specifies the protobuf message type, and value contains the serialized message data.

Why Use This Method?

The injective-cosmwasm package used JSON-based messages, which are less efficient and may not remain compatible with future updates. The new Any message approach uses protobuf encoding, offering better performance, type safety, and compatibility with CosmWasm 2.0+. This is now the recommended method for interacting with Injective's modules and queries.

Sending Messages

To send messages, you create a protobuf message, encode it, and wrap it in an Any message. Below is an example of creating a spot market order on Injective's exchange module.

Example: Creating a Spot Market Order

use cosmwasm_std::{AnyMsg, CosmosMsg, StdResult};
use injective_cosmwasm::{InjectiveMsgWrapper, OrderType, SpotMarket};
use injective_math::{round_to_min_tick, round_to_nearest_tick, FPDecimal};
use injective_std::types::injective::exchange::v1beta1 as Exchange;
use prost::Message;

pub fn create_spot_market_order_message(
    price: FPDecimal,
    quantity: FPDecimal,
    order_type: OrderType,
    sender: &str,
    subaccount_id: &str,
    fee_recipient: &str,
    market: &SpotMarket,
) -> StdResult<CosmosMsg<InjectiveMsgWrapper>> {
    let msg = create_spot_market_order(price, quantity, order_type, sender, subaccount_id, fee_recipient, market);

    let mut order_bytes = vec![];
    Exchange::MsgCreateSpotMarketOrder::encode(&msg, &mut order_bytes).unwrap();

    Ok(CosmosMsg::Any(AnyMsg {
        type_url: Exchange::MsgCreateSpotMarketOrder::TYPE_URL.to_string(),
        value: order_bytes.into(),
    }))
}

fn create_spot_market_order(
    price: FPDecimal,
    quantity: FPDecimal,
    order_type: OrderType,
    sender: &str,
    subaccount_id: &str,
    fee_recipient: &str,
    market: &SpotMarket,
) -> Exchange::MsgCreateSpotMarketOrder {
    let rounded_quantity = round_to_min_tick(quantity, market.min_quantity_tick_size);
    let rounded_price = round_to_nearest_tick(price, market.min_price_tick_size);

    Exchange::MsgCreateSpotMarketOrder {
        sender: sender.to_string(),
        order: Some(Exchange::SpotOrder {
            market_id: market.market_id.as_str().into(),
            order_info: Some(Exchange::OrderInfo {
                subaccount_id: subaccount_id.to_string(),
                fee_recipient: fee_recipient.to_string(),
                price: rounded_price.to_string(),
                quantity: rounded_quantity.to_string(),
                cid: "".to_string(),
            }),
            order_type: order_type as i32,
            trigger_price: "".to_string(),
        }),
    }
}

Steps:

1. Construct the MsgCreateSpotMarketOrder protobuf message with order details.

2. Encode it into bytes using prost::Message::encode.

3. Wrap it in an AnyMsg with the correct type_url.

4. Return it as a CosmosMsg::Any.

This approach can be adapted for other modules (e.g., auction, tokenfactory) by using the appropriate protobuf message and type_url.

Performing Queries

Queries are performed using QuerierWrapper with InjectiveQueryWrapper. You can use pre-built queriers from injective_std or send raw queries. Below are examples covering different modules.

Example: Querying a Spot Market (Exchange Module)

use cosmwasm_std::{to_json_binary, Binary, Deps, StdResult};
use injective_cosmwasm::InjectiveQueryWrapper;
use injective_std::types::injective::exchange::v1beta1::ExchangeQuerier;

pub fn handle_query_spot_market(deps: Deps<InjectiveQueryWrapper>, market_id: &str) -> StdResult<Binary> {
    let querier = ExchangeQuerier::new(&deps.querier);
    to_json_binary(&querier.spot_market(market_id.to_string())?)
}

Steps:

1. Create an ExchangeQuerier from deps.querier.

2. Call spot_market with the market_id.

3. Serialize the response to JSON and return it as a Binary.

Example: Querying Bank Parameters (Bank Module)

use cosmwasm_std::{to_json_binary, Binary, Deps, StdResult};
use injective_cosmwasm::InjectiveQueryWrapper;
use injective_std::types::cosmos::bank::v1beta1::BankQuerier;

pub fn handle_query_bank_params(deps: Deps<InjectiveQueryWrapper>) -> StdResult<Binary> {
    let querier = BankQuerier::new(&deps.querier);
    to_json_binary(&querier.params()?)
}

Steps:

1. Create a BankQuerier from deps.querier.

2. Call params to fetch bank module parameters.

3. Serialize and return the result.

Working with Other Modules

The same principles apply to other Injective modules like auction, insurance, oracle, permissions, and tokenfactory, as well as the Cosmos native modules. For example:

• Auction Module: Use AuctionQuerier for queries or encode MsgBid as an Any message.

• Tokenfactory Module: Encode MsgCreateDenom or use TokenFactoryQuerier.

Refer to injective_std for specific message types and queriers.