Expose querySPOStakeDistribution query

cardano-api/internal/Cardano/Api/Query.hs

@@ -285,6 +285,9 @@ data QueryInShelleyBasedEra era result where
   QueryDRepStakeDistr
     :: Set (Ledger.DRep StandardCrypto)
     -> QueryInShelleyBasedEra era (Map (Ledger.DRep StandardCrypto) L.Coin)
+  QuerySPOStakeDistr
+    :: Set (Ledger.KeyHash 'Ledger.StakePool StandardCrypto)
+    -> QueryInShelleyBasedEra era (Map (Ledger.KeyHash 'Ledger.StakePool Ledger.StandardCrypto) L.Coin)
   QueryCommitteeMembersState
     :: Set (Shelley.Credential Shelley.ColdCommitteeRole StandardCrypto)
     -> Set (Shelley.Credential Shelley.HotCommitteeRole StandardCrypto)
@@ -322,6 +325,7 @@ instance NodeToClientVersionOf (QueryInShelleyBasedEra era result) where
   nodeToClientVersionOf QueryGovState = NodeToClientV_16
   nodeToClientVersionOf QueryDRepState{} = NodeToClientV_16
   nodeToClientVersionOf QueryDRepStakeDistr{} = NodeToClientV_16
+  nodeToClientVersionOf QuerySPOStakeDistr{} = NodeToClientV_16
   nodeToClientVersionOf QueryCommitteeMembersState{} = NodeToClientV_16
   nodeToClientVersionOf QueryStakeVoteDelegatees{} = NodeToClientV_16
 
@@ -666,6 +670,13 @@ toConsensusQueryShelleyBased sbe = \case
       )
       (const $ Some (consensusQueryInEraInMode era (Consensus.GetDRepStakeDistr dreps)))
       sbe
+  QuerySPOStakeDistr spos ->
+    caseShelleyToBabbageOrConwayEraOnwards
+      ( const $
+          error "toConsensusQueryShelleyBased: QuerySPOStakeDistr is only available in the Conway era"
+      )
+      (const $ Some (consensusQueryInEraInMode era (Consensus.GetSPOStakeDistr spos)))
+      sbe
   QueryCommitteeMembersState coldCreds hotCreds statuses ->
     caseShelleyToBabbageOrConwayEraOnwards
       ( const $
@@ -958,6 +969,11 @@ fromConsensusQueryResultShelleyBased sbe sbeQuery q' r' =
         Consensus.GetDRepStakeDistr{} ->
           r'
         _ -> fromConsensusQueryResultMismatch
+    QuerySPOStakeDistr{} ->
+      case q' of
+        Consensus.GetSPOStakeDistr{} ->
+          r'
+        _ -> fromConsensusQueryResultMismatch
     QueryCommitteeMembersState{} ->
       case q' of
         Consensus.GetCommitteeMembersState{} ->

cardano-api/internal/Cardano/Api/Query/Expr.hs

@@ -30,6 +30,7 @@ module Cardano.Api.Query.Expr
   , L.CommitteeMembersState (..)
   , queryCommitteeMembersState
   , queryDRepStakeDistribution
+  , querySPOStakeDistribution
   , queryDRepState
   , queryGovState
   , queryStakeVoteDelegatees
@@ -416,6 +417,25 @@ queryDRepStakeDistribution era dreps = do
   let sbe = conwayEraOnwardsToShelleyBasedEra era
   queryExpr $ QueryInEra $ QueryInShelleyBasedEra sbe $ QueryDRepStakeDistr dreps
 
+querySPOStakeDistribution
+  :: ()
+  => ConwayEraOnwards era
+  -> Set (L.KeyHash 'L.StakePool L.StandardCrypto)
+  -- ^ An empty SPO key hash set means that distributions for all SPOs will be returned
+  -> LocalStateQueryExpr
+      block
+      point
+      QueryInMode
+      r
+      IO
+      ( Either
+          UnsupportedNtcVersionError
+          (Either EraMismatch (Map (L.KeyHash 'L.StakePool L.StandardCrypto) L.Coin))
+      )
+querySPOStakeDistribution era spos = do
+  let sbe = conwayEraOnwardsToShelleyBasedEra era
+  queryExpr $ QueryInEra $ QueryInShelleyBasedEra sbe $ QuerySPOStakeDistr spos
+
 -- | Returns info about committee members filtered by: cold credentials, hot credentials and statuses.
 -- If empty sets are passed as filters, then no filtering is done.
 queryCommitteeMembersState

cardano-api/src/Cardano/Api.hs

@@ -970,6 +970,7 @@ module Cardano.Api
   , queryGovState
   , queryDRepState
   , queryDRepStakeDistribution
+  , querySPOStakeDistribution
   , queryCommitteeMembersState
   , queryStakeVoteDelegatees