get_version

binaries/cuprated/src/rpc/json.rs

@@ -14,7 +14,10 @@ use cuprate_constants::{
     build::RELEASE,
     rpc::{RESTRICTED_BLOCK_COUNT, RESTRICTED_BLOCK_HEADER_RANGE},
 };
-use cuprate_helper::{cast::u64_to_usize, map::split_u128_into_low_high_bits};
+use cuprate_helper::{
+    cast::{u64_to_usize, usize_to_u64},
+    map::split_u128_into_low_high_bits,
+};
 use cuprate_rpc_interface::RpcHandler;
 use cuprate_rpc_types::{
     base::{AccessResponseBase, ResponseBase},
@@ -38,7 +41,7 @@ use cuprate_rpc_types::{
         SetBansRequest, SetBansResponse, SubmitBlockRequest, SubmitBlockResponse, SyncInfoRequest,
         SyncInfoResponse,
     },
-    misc::{BlockHeader, GetBan, HistogramEntry, Status},
+    misc::{BlockHeader, GetBan, HardforkEntry, HistogramEntry, Status},
     CORE_RPC_VERSION,
 };
 
@@ -573,13 +576,25 @@ async fn get_version(
     mut state: CupratedRpcHandler,
     request: GetVersionRequest,
 ) -> Result<GetVersionResponse, Error> {
+    let current_height = helper::top_height(&mut state).await?.0;
+    let target_height = blockchain_manager::target_height(&mut state.blockchain_manager).await?;
+
+    let hard_forks = blockchain::hard_forks(&mut state.blockchain_read)
+        .await?
+        .into_iter()
+        .map(|(height, hf)| HardforkEntry {
+            height: usize_to_u64(height),
+            hf_version: hf.as_u8(),
+        })
+        .collect();
+
     Ok(GetVersionResponse {
         base: ResponseBase::ok(),
         version: CORE_RPC_VERSION,
         release: RELEASE,
-        current_height: helper::top_height(&mut state).await?.0,
-        target_height: todo!(),
-        hard_forks: todo!(),
+        current_height,
+        target_height,
+        hard_forks,
     })
 }
 

binaries/cuprated/src/rpc/request/blockchain.rs

@@ -1,7 +1,7 @@
 //! Functions for [`BlockchainReadRequest`].
 
 use std::{
-    collections::{HashMap, HashSet},
+    collections::{BTreeMap, HashMap, HashSet},
     ops::Range,
 };
 
@@ -13,7 +13,7 @@ use cuprate_blockchain::service::BlockchainReadHandle;
 use cuprate_helper::cast::{u64_to_usize, usize_to_u64};
 use cuprate_types::{
     blockchain::{BlockchainReadRequest, BlockchainResponse},
-    Chain, CoinbaseTxSum, ExtendedBlockHeader, MinerData, OutputHistogramEntry,
+    Chain, CoinbaseTxSum, ExtendedBlockHeader, HardFork, MinerData, OutputHistogramEntry,
     OutputHistogramInput, OutputOnChain,
 };
 
@@ -343,3 +343,19 @@ pub(crate) async fn coinbase_tx_sum(
 
     Ok(sum)
 }
+
+/// [`BlockchainReadRequest::HardForks`]
+pub(crate) async fn hard_forks(
+    blockchain_read: &mut BlockchainReadHandle,
+) -> Result<BTreeMap<usize, HardFork>, Error> {
+    let BlockchainResponse::HardForks(hfs) = blockchain_read
+        .ready()
+        .await?
+        .call(BlockchainReadRequest::HardForks)
+        .await?
+    else {
+        unreachable!();
+    };
+
+    Ok(hfs)
+}

storage/blockchain/src/service/read.rs

@@ -121,6 +121,7 @@ fn map_request(
         R::DatabaseSize => database_size(env),
         R::OutputHistogram(input) => output_histogram(env, input),
         R::CoinbaseTxSum { height, count } => coinbase_tx_sum(env, height, count),
+        R::HardForks => hard_forks(env),
     }
 
     /* SOMEDAY: post-request handling, run some code for each request? */
@@ -648,3 +649,8 @@ fn output_histogram(env: &ConcreteEnv, input: OutputHistogramInput) -> ResponseR
 fn coinbase_tx_sum(env: &ConcreteEnv, height: usize, count: u64) -> ResponseResult {
     Ok(BlockchainResponse::CoinbaseTxSum(todo!()))
 }
+
+/// [`BlockchainReadRequest::HardForks`]
+fn hard_forks(env: &ConcreteEnv) -> ResponseResult {
+    Ok(BlockchainResponse::HardForks(todo!()))
+}

types/src/blockchain.rs

@@ -4,7 +4,7 @@
 //! responses are also tested in Cuprate's blockchain database crate.
 //---------------------------------------------------------------------------------------------------- Import
 use std::{
-    collections::{HashMap, HashSet},
+    collections::{BTreeMap, HashMap, HashSet},
     ops::Range,
 };
 
@@ -12,7 +12,8 @@ use monero_serai::block::Block;
 
 use crate::{
     types::{Chain, ExtendedBlockHeader, OutputOnChain, VerifiedBlockInformation},
-    AltBlockInformation, ChainId, CoinbaseTxSum, OutputHistogramEntry, OutputHistogramInput,
+    AltBlockInformation, ChainId, CoinbaseTxSum, HardFork, OutputHistogramEntry,
+    OutputHistogramInput,
 };
 
 //---------------------------------------------------------------------------------------------------- ReadRequest
@@ -107,7 +108,9 @@ pub enum BlockchainReadRequest {
     AltBlocksInChain(ChainId),
 
     /// Get a [`Block`] by its height.
-    Block { height: usize },
+    Block {
+        height: usize,
+    },
 
     /// Get a [`Block`] by its hash.
     BlockByHash([u8; 32]),
@@ -127,7 +130,12 @@ pub enum BlockchainReadRequest {
     /// `N` last blocks starting at particular height.
     ///
     /// TODO: document fields after impl.
-    CoinbaseTxSum { height: usize, count: u64 },
+    CoinbaseTxSum {
+        height: usize,
+        count: u64,
+    },
+
+    HardForks,
 }
 
 //---------------------------------------------------------------------------------------------------- WriteRequest
@@ -276,6 +284,12 @@ pub enum BlockchainResponse {
     /// Response to [`BlockchainReadRequest::CoinbaseTxSum`].
     CoinbaseTxSum(CoinbaseTxSum),
 
+    /// Response to [`BlockchainReadRequest::HardForks`].
+    ///
+    /// - Key = height at which the hardfork activated
+    /// - Value = hardfork version
+    HardForks(BTreeMap<usize, HardFork>),
+
     //------------------------------------------------------ Writes
     /// A generic Ok response to indicate a request was successfully handled.
     ///