Merge bitcoin/bitcoin#23173: Add ChainstateManager::ProcessTransaction

0fdb619aaf [validation] Always call mempool.check() after processing a new transaction (John Newbery)
2c64270bbe [refactor] Don't call AcceptToMemoryPool() from outside validation.cpp (John Newbery)
92a3aeecf6 [validation] Add CChainState::ProcessTransaction() (John Newbery)
36167faea9 [logging/documentation] Remove reference to AcceptToMemoryPool from error string (John Newbery)
4c24142b1e [validation] Remove comment about AcceptToMemoryPool() (John Newbery)
5759fd12b8 [test] Don't set bypass_limits to true in txvalidation_tests.cpp (John Newbery)
497c9e2964 [test] Don't set bypass_limits to true in txvalidationcache_tests.cpp (John Newbery)

Pull request description:

  Similarly to how #18698 added `ProcessNewBlock()` and `ProcessNewBlockHeaders()` methods to the `ChainstateManager` class, this PR adds a new `ProcessTransaction()` method. Code outside validation no longer calls `AcceptToMemoryPool()` directly, but calls through the higher-level `ProcessTransaction()` method. Advantages:

  - The interface is simplified. Calling code no longer needs to know about the active chainstate or mempool object, since `AcceptToMemoryPool()` can only ever be called for the active chainstate, and that chainstate knows which mempool it's using. We can also remove the `bypass_limits` argument, since that can only be used internally in validation.
  - responsibility for calling `CTxMemPool::check()` is removed from the callers, and run automatically by `ChainstateManager` every time `ProcessTransaction()` is called.

ACKs for top commit:
  lsilva01:
    tACK 0fdb619 on Ubuntu 20.04
  theStack:
    Code-review ACK 0fdb619aaf
  ryanofsky:
    Code review ACK 0fdb619aaf. Only changes since last review: splitting & joining commits, adding more explanations to commit messages, tweaking MEMPOOL_ERROR string, fixing up argument name comments.

Tree-SHA512: 0b395c2e3ef242f0d41d47174b1646b0a73aeece38f1fe29349837e6fb832f4bf8d57e1a1eaed82a97c635cfd59015a7e07f824e0d7c00b2bee4144e80608172

src/test/txvalidation_tests.cpp

@@ -37,8 +37,7 @@ BOOST_FIXTURE_TEST_CASE(tx_mempool_reject_coinbase, TestChain100Setup)
     LOCK(cs_main);
 
     unsigned int initialPoolSize = m_node.mempool->size();
-    const MempoolAcceptResult result = AcceptToMemoryPool(m_node.chainman->ActiveChainstate(), *m_node.mempool, MakeTransactionRef(coinbaseTx),
-                true /* bypass_limits */);
+    const MempoolAcceptResult result = m_node.chainman->ProcessTransaction(MakeTransactionRef(coinbaseTx));
 
     BOOST_CHECK(result.m_result_type == MempoolAcceptResult::ResultType::INVALID);
 

src/test/txvalidationcache_tests.cpp

@@ -36,8 +36,7 @@ BOOST_FIXTURE_TEST_CASE(tx_mempool_block_doublespend, Dersig100Setup)
     const auto ToMemPool = [this](const CMutableTransaction& tx) {
         LOCK(cs_main);
 
-        const MempoolAcceptResult result = AcceptToMemoryPool(m_node.chainman->ActiveChainstate(), *m_node.mempool, MakeTransactionRef(tx),
-            true /* bypass_limits */);
+        const MempoolAcceptResult result = m_node.chainman->ProcessTransaction(MakeTransactionRef(tx));
         return result.m_result_type == MempoolAcceptResult::ResultType::VALID;
     };
 

src/test/util/setup_common.cpp

@@ -315,7 +315,7 @@ CMutableTransaction TestChain100Setup::CreateValidMempoolTransaction(CTransactio
     // If submit=true, add transaction to the mempool.
     if (submit) {
         LOCK(cs_main);
-        const MempoolAcceptResult result = AcceptToMemoryPool(m_node.chainman->ActiveChainstate(), *m_node.mempool.get(), MakeTransactionRef(mempool_txn), /* bypass_limits */ false);
+        const MempoolAcceptResult result = m_node.chainman->ProcessTransaction(MakeTransactionRef(mempool_txn));
         assert(result.m_result_type == MempoolAcceptResult::ResultType::VALID);
     }
 

src/test/validation_block_tests.cpp

@@ -273,7 +273,7 @@ BOOST_AUTO_TEST_CASE(mempool_locks_reorg)
         {
             LOCK(cs_main);
             for (const auto& tx : txs) {
-                const MempoolAcceptResult result = AcceptToMemoryPool(m_node.chainman->ActiveChainstate(), *m_node.mempool, tx, false /* bypass_limits */);
+                const MempoolAcceptResult result = m_node.chainman->ProcessTransaction(tx);
                 BOOST_REQUIRE(result.m_result_type == MempoolAcceptResult::ResultType::VALID);
             }
         }