Merge pull request #3734 from anoma/fraccaman/query-active-validators

rpc: add query consensus validators

.changelog/unreleased/improvements/3734-query-active-validators.md

@@ -0,0 +1,2 @@
+- Add an RPC endpoint for the consensus validator set in the SDK.
+  ([\#3734](https://github.com/anoma/namada/pull/3734))

crates/sdk/src/rpc.rs

@@ -40,6 +40,7 @@ use namada_parameters::{storage as params_storage, EpochDuration};
 use namada_proof_of_stake::parameters::PosParams;
 use namada_proof_of_stake::types::{
     BondsAndUnbondsDetails, CommissionPair, ValidatorMetaData,
+    WeightedValidator,
 };
 use namada_state::LastBlock;
 use namada_token::masp::MaspTokenRewardData;
@@ -740,6 +741,19 @@ pub async fn get_all_validators<C: namada_io::Client + Sync>(
     )
 }
 
+/// Get all consensus validators in the given epoch
+pub async fn get_all_consensus_validators<C: namada_io::Client + Sync>(
+    client: &C,
+    epoch: Epoch,
+) -> Result<BTreeSet<WeightedValidator>, error::Error> {
+    convert_response::<C, _>(
+        RPC.vp()
+            .pos()
+            .consensus_validator_set(client, &Some(epoch))
+            .await,
+    )
+}
+
 /// Get the total staked tokens in the given epoch
 pub async fn get_total_staked_tokens<C: namada_io::Client + Sync>(
     client: &C,