From 1a199c3f1e5aaae7aaba07b5388a5a5f195bad6b Mon Sep 17 00:00:00 2001 From: Islam El-Ashi Date: Tue, 2 Dec 2025 20:06:34 +0200 Subject: [PATCH 1/3] feat: exchange rate example in Rust --- .github/workflows/ninja_pr_checks.yml | 1 + rust/exchange_rates/Cargo.lock | 706 +++++++++++++++++++++ rust/exchange_rates/Cargo.toml | 13 + rust/exchange_rates/dfx.json | 17 + rust/exchange_rates/src/exchange_rates.did | 10 + rust/exchange_rates/src/lib.rs | 28 + 6 files changed, 775 insertions(+) create mode 100644 rust/exchange_rates/Cargo.lock create mode 100644 rust/exchange_rates/Cargo.toml create mode 100644 rust/exchange_rates/dfx.json create mode 100644 rust/exchange_rates/src/exchange_rates.did create mode 100644 rust/exchange_rates/src/lib.rs diff --git a/.github/workflows/ninja_pr_checks.yml b/.github/workflows/ninja_pr_checks.yml index efa553897..eb23c93cd 100644 --- a/.github/workflows/ninja_pr_checks.yml +++ b/.github/workflows/ninja_pr_checks.yml @@ -81,6 +81,7 @@ jobs: ["X.509 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["cdylib"] + +[dependencies] +candid = "0.10.19" +ic-cdk = "0.18.7" +ic-xrc-types = "1.2.0" +serde = "1.0.228" diff --git a/rust/exchange_rates/dfx.json b/rust/exchange_rates/dfx.json new file mode 100644 index 000000000..fbbbf1965 --- /dev/null +++ b/rust/exchange_rates/dfx.json @@ -0,0 +1,17 @@ +{ + "canisters": { + "exchange-rates": { + "candid": "src/exchange-rates.did", + "package": "exchange-rates-demo", + "type": "rust" + } + }, + "defaults": { + "build": { + "args": "", + "packtool": "" + } + }, + "output_env_file": ".env", + "version": 1 +} diff --git a/rust/exchange_rates/src/exchange_rates.did b/rust/exchange_rates/src/exchange_rates.did new file mode 100644 index 000000000..3b31119d1 --- /dev/null +++ b/rust/exchange_rates/src/exchange_rates.did @@ -0,0 +1,10 @@ +type AssetClass = variant { Cryptocurrency; FiatCurrency; }; + +type Asset = record { + symbol: text; + class: AssetClass; +}; + +service exchange_rate_demo: { + get_exchange_rate: (base: Asset, quote: Asset) -> (nat64); +} diff --git a/rust/exchange_rates/src/lib.rs b/rust/exchange_rates/src/lib.rs new file mode 100644 index 000000000..7a78f6bfc --- /dev/null +++ b/rust/exchange_rates/src/lib.rs @@ -0,0 +1,28 @@ +use candid::Principal; +use ic_cdk::call::{Call, Response}; +use ic_xrc_types::{Asset, ExchangeRate, ExchangeRateError, GetExchangeRateRequest}; + +const EXCHANGE_RATE_CANISTER: &str = "uf6dk-hyaaa-aaaaq-qaaaq-cai"; +const CYCLES_PER_REQUEST: u128 = 1_000_000_000; + +#[ic_cdk::update] +async fn get_exchange_rate(base: Asset, quote: Asset) -> u128 { + let exchange_rate_principal = Principal::from_text(EXCHANGE_RATE_CANISTER).unwrap(); + + let response: Response = Call::bounded_wait(exchange_rate_principal, "get_exchange_rate") + .with_cycles(CYCLES_PER_REQUEST) + .with_arg(&GetExchangeRateRequest { + base_asset: base, + quote_asset: quote, + timestamp: None, + }) + .await + .expect("Call to exchange canister failed."); + + let exchange_rate_result: Result = + response.candid().expect("Decoding result failed."); + + ic_cdk::println!("result: {:?}", exchange_rate_result); + + exchange_rate_result.unwrap().rate as u128 +} From 2b026f3f84239f87992f46fd877e2d12aea0fdd9 Mon Sep 17 00:00:00 2001 From: Islam El-Ashi Date: Tue, 2 Dec 2025 20:21:11 +0200 Subject: [PATCH 2/3] . --- .../exchange_rates/src/{exchange_rates.did => exchange-rates.did} | 0 1 file changed, 0 insertions(+), 0 deletions(-) rename rust/exchange_rates/src/{exchange_rates.did => exchange-rates.did} (100%) diff --git a/rust/exchange_rates/src/exchange_rates.did b/rust/exchange_rates/src/exchange-rates.did similarity index 100% rename from rust/exchange_rates/src/exchange_rates.did rename to rust/exchange_rates/src/exchange-rates.did From ca702a8b0e8fb422d2ab5f97b0c956c534439a52 Mon Sep 17 00:00:00 2001 From: Islam El-Ashi Date: Tue, 2 Dec 2025 20:22:24 +0200 Subject: [PATCH 3/3] . --- rust/{exchange_rates => exchange-rates}/Cargo.lock | 0 rust/{exchange_rates => exchange-rates}/Cargo.toml | 0 rust/{exchange_rates => exchange-rates}/dfx.json | 0 rust/{exchange_rates => exchange-rates}/src/exchange-rates.did | 0 rust/{exchange_rates => exchange-rates}/src/lib.rs | 0 5 files changed, 0 insertions(+), 0 deletions(-) rename rust/{exchange_rates => exchange-rates}/Cargo.lock (100%) rename rust/{exchange_rates => exchange-rates}/Cargo.toml (100%) rename rust/{exchange_rates => exchange-rates}/dfx.json (100%) rename rust/{exchange_rates => exchange-rates}/src/exchange-rates.did (100%) rename rust/{exchange_rates => exchange-rates}/src/lib.rs (100%) diff --git a/rust/exchange_rates/Cargo.lock b/rust/exchange-rates/Cargo.lock similarity index 100% rename from rust/exchange_rates/Cargo.lock rename to rust/exchange-rates/Cargo.lock diff --git a/rust/exchange_rates/Cargo.toml b/rust/exchange-rates/Cargo.toml similarity index 100% rename from rust/exchange_rates/Cargo.toml rename to rust/exchange-rates/Cargo.toml diff --git a/rust/exchange_rates/dfx.json b/rust/exchange-rates/dfx.json similarity index 100% rename from rust/exchange_rates/dfx.json rename to rust/exchange-rates/dfx.json diff --git a/rust/exchange_rates/src/exchange-rates.did b/rust/exchange-rates/src/exchange-rates.did similarity index 100% rename from rust/exchange_rates/src/exchange-rates.did rename to rust/exchange-rates/src/exchange-rates.did diff --git a/rust/exchange_rates/src/lib.rs b/rust/exchange-rates/src/lib.rs similarity index 100% rename from rust/exchange_rates/src/lib.rs rename to rust/exchange-rates/src/lib.rs