feat: rates module for exchange rate APIs

Author: kincaidoneil

Cargo.lock

@@ -11,6 +11,7 @@ members = [
   "./crates/interledger-ildcp",
   "./crates/interledger-packet",
   "./crates/interledger-router",
+  "./crates/interledger-rates",
   "./crates/interledger-service",
   "./crates/interledger-service-util",
   "./crates/interledger-settlement",

Cargo.toml

@@ -38,15 +38,15 @@ use interledger::{
     ildcp::IldcpService,
     packet::Address,
     packet::{ErrorCode, RejectBuilder},
+    rates::{ExchangeRateFetcher, ExchangeRateStore},
     router::{Router, RouterStore},
     service::{
         outgoing_service_fn, Account as AccountTrait, AccountStore, AddressStore, OutgoingRequest,
         Username,
     },
     service_util::{
-        BalanceStore, EchoService, ExchangeRateFetcher, ExchangeRateService, ExchangeRateStore,
-        ExpiryShortenerService, MaxPacketAmountService, RateLimitService, RateLimitStore,
-        ValidatorService,
+        BalanceStore, EchoService, ExchangeRateService, ExpiryShortenerService,
+        MaxPacketAmountService, RateLimitService, RateLimitStore, ValidatorService,
     },
     settlement::{
         api::{create_settlements_filter, SettlementMessageService},
@@ -74,7 +74,7 @@ use crate::redis_store::*;
 use interledger::service_util::BalanceService;
 
 #[doc(hidden)]
-pub use interledger::service_util::ExchangeRateProvider;
+pub use interledger::rates::ExchangeRateProvider;
 
 static DEFAULT_ILP_ADDRESS: Lazy<Address> = Lazy::new(|| Address::from_str("local.host").unwrap());
 

crates/ilp-node/src/node.rs

@@ -11,6 +11,7 @@ repository = "https://github.com/interledger-rs/interledger-rs"
 interledger-packet = { path = "../interledger-packet", version = "^0.4.0", default-features = false }
 interledger-http = { path = "../interledger-http", version = "^0.4.0", default-features = false }
 interledger-ildcp = { path = "../interledger-ildcp", version = "^0.4.0", default-features = false }
+interledger-rates = { path = "../interledger-rates", version = "^0.4.0", default-features = false }
 interledger-router = { path = "../interledger-router", version = "^0.4.0", default-features = false }
 interledger-service = { path = "../interledger-service", version = "^0.4.0", default-features = false }
 interledger-service-util = { path = "../interledger-service-util", version = "^0.4.0", default-features = false }

crates/interledger-api/Cargo.toml

@@ -5,11 +5,12 @@ use interledger_ccp::CcpRoutingAccount;
 use interledger_errors::NodeStoreError;
 use interledger_http::{HttpAccount, HttpStore};
 use interledger_packet::Address;
+use interledger_rates::ExchangeRateStore;
 use interledger_router::RouterStore;
 use interledger_service::{
     Account, AccountStore, AddressStore, IncomingService, OutgoingService, Username,
 };
-use interledger_service_util::{BalanceStore, ExchangeRateStore};
+use interledger_service_util::BalanceStore;
 use interledger_settlement::core::types::{SettlementAccount, SettlementStore};
 use interledger_stream::StreamNotificationsStore;
 use secrecy::SecretString;

crates/interledger-api/src/lib.rs

@@ -7,12 +7,13 @@ use interledger_errors::*;
 use interledger_http::{deserialize_json, HttpAccount, HttpStore};
 use interledger_ildcp::IldcpRequest;
 use interledger_ildcp::IldcpResponse;
+use interledger_rates::ExchangeRateStore;
 use interledger_router::RouterStore;
 use interledger_service::{
     Account, AccountStore, AddressStore, IncomingService, OutgoingRequest, OutgoingService,
     Username,
 };
-use interledger_service_util::{BalanceStore, ExchangeRateStore};
+use interledger_service_util::BalanceStore;
 use interledger_settlement::core::{types::SettlementAccount, SettlementClient};
 use interledger_spsp::{pay, SpspResponder};
 use interledger_stream::{PaymentNotification, StreamNotificationsStore};

crates/interledger-api/src/routes/accounts.rs

@@ -4,6 +4,7 @@ use futures::TryFutureExt;
 use interledger_errors::*;
 use interledger_http::{deserialize_json, HttpAccount};
 use interledger_packet::Address;
+use interledger_rates::ExchangeRateStore;
 use interledger_router::RouterStore;
 use interledger_service::{Account, AccountStore, AddressStore, Username};
 use interledger_service_util::ExchangeRateStore;

crates/interledger-api/src/routes/node_settings.rs

@@ -11,11 +11,12 @@ use interledger_ccp::{CcpRoutingAccount, RoutingRelation};
 use interledger_errors::*;
 use interledger_http::{HttpAccount, HttpStore};
 use interledger_packet::{Address, ErrorCode, FulfillBuilder, RejectBuilder};
+use interledger_rates::ExchangeRateStore;
 use interledger_router::RouterStore;
 use interledger_service::{
     incoming_service_fn, outgoing_service_fn, Account, AccountStore, AddressStore, Username,
 };
-use interledger_service_util::{BalanceStore, ExchangeRateStore};
+use interledger_service_util::BalanceStore;
 use interledger_settlement::core::types::{SettlementAccount, SettlementEngineDetails};
 use interledger_stream::{PaymentNotification, StreamNotificationsStore};
 use once_cell::sync::Lazy;

crates/interledger-api/src/routes/test_helpers.rs

@@ -0,0 +1,20 @@
+[package]
+name = "interledger-rates"
+version = "0.4.0"
+authors = ["Kincaid O'Neil <[email protected]>"]
+edition = "2018"
+
+# TODO Add other metadata here!
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+async-trait = "0.1.22"
+futures = { version = "0.3.1", default-features = false }
+interledger-errors = { path = "../interledger-errors", version = "^0.1.0" }
+log = { version = "0.4.8", default-features = false }
+once_cell = "1.3.1"
+reqwest = { version = "0.10.0", default-features = false, features = ["default-tls", "json"] }
+secrecy = { version = "0.6", default-features = false, features = ["alloc", "serde"] }
+serde = { version = "1.0.101", default-features = false, features = ["derive"]}
+tokio = { version = "0.2.6", default-features = false, features = ["macros", "time"] }

crates/interledger-rates/Cargo.toml

@@ -0,0 +1,3 @@
+# interledger-rates
+
+Utilities for fetching and caching exchange rates from external APIs, which supports CoinCap and CryptoCompare rate backends.