From 92629c3ef4ba60ea72ee491f7d0dc0d64eb284e1 Mon Sep 17 00:00:00 2001
From: Shoham Chakraborty <shhmchk@gmail.com>
Date: Wed, 12 Apr 2023 13:36:27 +0800
Subject: [PATCH] evm: eth_mining RPC implementation (#1892)

* eth_mining RPC implementation

* Formatting
---
 src/masternodes/evm_ffi.cpp                |  5 +++++
 src/masternodes/evm_ffi.h                  |  1 +
 src/rust/crates/ain-evm-cpp-ffi/src/lib.rs |  9 ++++++++-
 src/rust/crates/ain-grpc/src/rpc.rs        | 10 +++++++++-
 src/rust/protobuf/rpc/eth.proto            |  2 ++
 5 files changed, 25 insertions(+), 2 deletions(-)

diff --git a/src/masternodes/evm_ffi.cpp b/src/masternodes/evm_ffi.cpp
index 33248049352..27c57d417a3 100644
--- a/src/masternodes/evm_ffi.cpp
+++ b/src/masternodes/evm_ffi.cpp
@@ -1,5 +1,10 @@
 #include <masternodes/evm_ffi.h>
+#include <util/system.h>
 
 uint64_t getChainId() {
     return Params().GetConsensus().evmChainId;
 }
+
+bool isMining() {
+    return gArgs.GetBoolArg("-gen", false);
+}
\ No newline at end of file
diff --git a/src/masternodes/evm_ffi.h b/src/masternodes/evm_ffi.h
index f96384e5990..358e5740061 100644
--- a/src/masternodes/evm_ffi.h
+++ b/src/masternodes/evm_ffi.h
@@ -4,5 +4,6 @@
 #include <chainparams.h>
 
 uint64_t getChainId();
+bool isMining();
 
 #endif // DEFI_EVM_FFI_H
diff --git a/src/rust/crates/ain-evm-cpp-ffi/src/lib.rs b/src/rust/crates/ain-evm-cpp-ffi/src/lib.rs
index fca49937016..9793298e5fe 100644
--- a/src/rust/crates/ain-evm-cpp-ffi/src/lib.rs
+++ b/src/rust/crates/ain-evm-cpp-ffi/src/lib.rs
@@ -6,11 +6,18 @@ mod ffi {
         include!("masternodes/evm_ffi.h");
 
         fn getChainId() -> u64;
+        fn isMining() -> bool;
     }
 }
 
 pub fn get_chain_id() -> Result<u64, Box<dyn Error>> {
     let chain_id = ffi::getChainId();
 
-    return Ok(chain_id);
+    Ok(chain_id)
+}
+
+pub fn is_mining() -> Result<bool, Box<dyn Error>> {
+    let is_mining = ffi::isMining();
+
+    Ok(is_mining)
 }
diff --git a/src/rust/crates/ain-grpc/src/rpc.rs b/src/rust/crates/ain-grpc/src/rpc.rs
index 6ef55911cce..a731c883469 100644
--- a/src/rust/crates/ain-grpc/src/rpc.rs
+++ b/src/rust/crates/ain-grpc/src/rpc.rs
@@ -2,7 +2,7 @@ use crate::codegen::rpc::{
     ffi::{
         EthAccountsResult, EthBlockInfo, EthBlockNumberResult, EthCallInput, EthCallResult,
         EthGetBalanceInput, EthGetBalanceResult, EthGetBlockByHashInput, EthGetBlockByNumberInput,
-        EthTransactionInfo,
+        EthMiningResult, EthTransactionInfo,
     },
     EthService,
 };
@@ -41,6 +41,8 @@ pub trait EthServiceApi {
         handler: Arc<Handlers>,
         input: EthGetBlockByNumberInput,
     ) -> Result<EthBlockInfo, jsonrpsee_core::Error>;
+
+    fn Eth_Mining(handler: Arc<Handlers>) -> Result<EthMiningResult, jsonrpsee_core::Error>;
 }
 
 impl EthServiceApi for EthService {
@@ -185,6 +187,12 @@ impl EthServiceApi for EthService {
                 .collect::<Vec<String>>(),
         })
     }
+
+    fn Eth_Mining(handler: Arc<Handlers>) -> Result<EthMiningResult, jsonrpsee_core::Error> {
+        let mining = ain_evm_cpp_ffi::is_mining().unwrap();
+
+        Ok(EthMiningResult { is_mining: mining })
+    }
 }
 
 fn format_hash(hash: H256) -> String {
diff --git a/src/rust/protobuf/rpc/eth.proto b/src/rust/protobuf/rpc/eth.proto
index 25ac6b37033..ee065b26ee6 100644
--- a/src/rust/protobuf/rpc/eth.proto
+++ b/src/rust/protobuf/rpc/eth.proto
@@ -23,4 +23,6 @@ service eth {
   rpc Eth_BlockNumber(google.protobuf.Empty) returns (types.EthBlockNumberResult);
 
   rpc Eth_GetBlockByNumber(types.EthGetBlockByNumberInput) returns (types.EthBlockInfo);
+
+  rpc Eth_Mining(google.protobuf.Empty) returns (types.EthMiningResult);
 }