rpc methods (#78)

Co-authored-by: David Salami <[email protected]>

pallet-ismp/rpc/src/lib.rs

@@ -117,6 +117,14 @@ where
     #[method(name = "ismp_queryConsensusUpdateTime")]
     fn query_consensus_update_time(&self, client_id: ConsensusClientId) -> Result<u64>;
 
+    /// Query the challenge period for client
+    #[method(name = "ismp_queryChallengePeriod")]
+    fn query_challenge_period(&self, client_id: ConsensusClientId) -> Result<u64>;
+
+    /// Query the latest timestamp for chain
+    #[method(name = "ismp_queryTimestamp")]
+    fn query_timestamp(&self) -> Result<u64>;
+
     /// Query the latest height for a state machine
     #[method(name = "ismp_queryStateMachineLatestHeight")]
     fn query_state_machine_latest_height(&self, id: StateMachineId) -> Result<u64>;
@@ -255,6 +263,24 @@ where
             .ok_or_else(|| runtime_error_into_rpc_error("Error fetching Consensus update time"))
     }
 
+    fn query_challenge_period(&self, client_id: ConsensusClientId) -> Result<u64> {
+        let api = self.client.runtime_api();
+        let at = self.client.info().best_hash;
+        api.challenge_period(at, client_id)
+            .ok()
+            .flatten()
+            .ok_or_else(|| runtime_error_into_rpc_error("Error fetching Challenge period"))
+    }
+
+    fn query_timestamp(&self) -> Result<u64> {
+        let api = self.client.runtime_api();
+        let at = self.client.info().best_hash;
+        api.timestamp(at)
+            .ok()
+            .flatten()
+            .ok_or_else(|| runtime_error_into_rpc_error("Error fetching latest timestamp"))
+    }
+
     fn query_state_machine_latest_height(&self, id: StateMachineId) -> Result<u64> {
         let api = self.client.runtime_api();
         let at = self.client.info().best_hash;

pallet-ismp/runtime-api/src/lib.rs

@@ -54,6 +54,12 @@ sp_api::decl_runtime_apis! {
         /// Return the timestamp this client was last updated in seconds
         fn consensus_update_time(id: ConsensusClientId) -> Option<u64>;
 
+         /// Return the latest timestamp for the chain
+        fn timestamp() -> Option<u64>;
+
+        /// Return the challenge period timestamp
+        fn challenge_period(id: ConsensusClientId) -> Option<u64>;
+
         /// Return the latest height of the state machine
         fn latest_state_machine_height(id: StateMachineId) -> Option<u64>;
 

pallet-ismp/src/lib.rs

@@ -44,7 +44,7 @@ use core::time::Duration;
 use frame_support::{
     dispatch::{DispatchResult, DispatchResultWithPostInfo, Pays, PostDispatchInfo},
     log::debug,
-    traits::Get,
+    traits::{Get, UnixTime},
     RuntimeDebug,
 };
 use ismp_rs::{
@@ -667,6 +667,16 @@ where
         ConsensusClientUpdateTime::<T>::get(id)
     }
 
+    /// Return the challenge period
+    pub fn get_challenge_period(id: ConsensusClientId) -> Option<u64> {
+        ChallengePeriod::<T>::get(id)
+    }
+
+    /// Return latest timestamp on chain
+    pub fn get_timestamp() -> Option<u64> {
+        Some(<T::TimeProvider as UnixTime>::now().as_secs())
+    }
+
     /// Return the latest height of the state machine
     pub fn get_latest_state_machine_height(id: StateMachineId) -> Option<u64> {
         Some(LatestStateMachineHeight::<T>::get(id))