node: Add chainman alias for g_chainman

src/node/context.h

@@ -5,6 +5,7 @@
 #ifndef BITCOIN_NODE_CONTEXT_H
 #define BITCOIN_NODE_CONTEXT_H
 
+#include <cassert>
 #include <memory>
 #include <vector>
 
@@ -13,6 +14,7 @@ class BanMan;
 class CConnman;
 class CScheduler;
 class CTxMemPool;
+class ChainstateManager;
 class PeerLogicValidation;
 namespace interfaces {
 class Chain;
@@ -33,6 +35,7 @@ struct NodeContext {
     std::unique_ptr<CConnman> connman;
     CTxMemPool* mempool{nullptr}; // Currently a raw pointer because the memory is not managed by this struct
     std::unique_ptr<PeerLogicValidation> peer_logic;
+    ChainstateManager* chainman{nullptr}; // Currently a raw pointer because the memory is not managed by this struct
     std::unique_ptr<BanMan> banman;
     ArgsManager* args{nullptr}; // Currently a raw pointer because the memory is not managed by this struct
     std::unique_ptr<interfaces::Chain> chain;
@@ -46,4 +49,10 @@ struct NodeContext {
     ~NodeContext();
 };
 
+inline ChainstateManager& EnsureChainman(const NodeContext& node)
+{
+    assert(node.chainman);
+    return *node.chainman;
+}
+
 #endif // BITCOIN_NODE_CONTEXT_H