Merge #18571: fuzz: Disable debug log file

fa69f88 fuzz: Disable debug log file (MarcoFalke)
fa0cbd4 test: Add optional extra_args to testing setup (MarcoFalke)
fad4fa7 node: Add args alias for gArgs global (MarcoFalke)

Pull request description:

  There are several issues with writing to a debug log file when fuzzing:

  * Disk access is slow, but fuzzing should be fast (Note: I could not verify this claim with data)
  * Disks have a limited size and will eventually run out of space, but fuzzing should run continuous

  Fix both issues by disabling the debug log file for fuzz tests

ACKs for top commit:
  practicalswift:
    ACK fa69f88 -- patch looks correct

Tree-SHA512: f61beb6c94a9ab664deb191685fcad601e228b77bb1c43db6ec40616ae393c9dd35c51474f1b0759ac0bc29b5ca8456a329906a3695bd0f18fa4372210c8b54a

src/bench/bench_bitcoin.cpp

@@ -73,6 +73,8 @@ int main(int argc, char** argv)
             gArgs.GetArg("-plot-height", DEFAULT_PLOT_HEIGHT)));
     }
 
+    gArgs.ClearArgs(); // gArgs no longer needed. Clear it here to avoid interactions with the testing setup in the benches
+
     benchmark::BenchRunner::RunAll(*printer, evaluations, scaling_factor, regex_filter, is_list_only);
 
     return EXIT_SUCCESS;

src/bitcoind.cpp

@@ -53,7 +53,7 @@ static bool AppInit(int argc, char* argv[])
     // Parameters
     //
     // If Qt is used, parameters/bitcoin.conf are parsed in qt/bitcoin.cpp's main()
-    SetupServerArgs();
+    SetupServerArgs(node);
     std::string error;
     if (!gArgs.ParseParameters(argc, argv, error)) {
         return InitError(strprintf("Error parsing command line arguments: %s\n", error));

src/init.cpp

@@ -297,6 +297,7 @@ void Shutdown(NodeContext& node)
     GetMainSignals().UnregisterBackgroundSignalScheduler();
     globalVerifyHandle.reset();
     ECC_Stop();
+    node.args = nullptr;
     if (node.mempool) node.mempool = nullptr;
     node.scheduler.reset();
 
@@ -360,8 +361,11 @@ static void OnRPCStopped()
     LogPrint(BCLog::RPC, "RPC stopped.\n");
 }
 
-void SetupServerArgs()
+void SetupServerArgs(NodeContext& node)
 {
+    assert(!node.args);
+    node.args = &gArgs;
+
     SetupHelpOptions(gArgs);
     gArgs.AddArg("-help-debug", "Print help message with debugging options and exit", ArgsManager::ALLOW_ANY, OptionsCategory::DEBUG_TEST); // server-only for now
 

src/init.h

@@ -54,9 +54,9 @@ bool AppInitLockDataDirectory();
 bool AppInitMain(NodeContext& node);
 
 /**
- * Setup the arguments for gArgs
+ * Register all arguments with the ArgsManager
  */
-void SetupServerArgs();
+void SetupServerArgs(NodeContext& node);
 
 /** Returns licensing information (for -version) */
 std::string LicenseInfo();

src/interfaces/node.cpp

@@ -97,7 +97,7 @@ class NodeImpl : public Node
             StopMapPort();
         }
     }
-    void setupServerArgs() override { return SetupServerArgs(); }
+    void setupServerArgs() override { return SetupServerArgs(m_context); }
     bool getProxy(Network net, proxyType& proxy_info) override { return GetProxy(net, proxy_info); }
     size_t getNodeCount(CConnman::NumConnections flags) override
     {

src/node/context.h

@@ -8,6 +8,7 @@
 #include <memory>
 #include <vector>
 
+class ArgsManager;
 class BanMan;
 class CConnman;
 class CScheduler;
@@ -33,6 +34,7 @@ struct NodeContext {
     CTxMemPool* mempool{nullptr}; // Currently a raw pointer because the memory is not managed by this struct
     std::unique_ptr<PeerLogicValidation> peer_logic;
     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;
     std::vector<std::unique_ptr<interfaces::ChainClient>> chain_clients;
     std::unique_ptr<CScheduler> scheduler;

src/test/fuzz/process_message.cpp

@@ -57,12 +57,17 @@ const std::map<std::string, std::set<std::string>> EXPECTED_DESERIALIZATION_EXCE
     {"Unknown transaction optional data: iostream error", {"block", "blocktxn", "cmpctblock", "tx"}},
 };
 
-const RegTestingSetup* g_setup;
+const TestingSetup* g_setup;
 } // namespace
 
 void initialize()
 {
-    static RegTestingSetup setup{};
+    static TestingSetup setup{
+        CBaseChainParams::REGTEST,
+        {
+            "-nodebuglogfile",
+        },
+    };
     g_setup = &setup;
 
     for (int i = 0; i < 2 * COINBASE_MATURITY; i++) {

src/test/fuzz/process_messages.cpp

@@ -16,11 +16,16 @@
 #include <validation.h>
 #include <validationinterface.h>
 
-const RegTestingSetup* g_setup;
+const TestingSetup* g_setup;
 
 void initialize()
 {
-    static RegTestingSetup setup{};
+    static TestingSetup setup{
+        CBaseChainParams::REGTEST,
+        {
+            "-nodebuglogfile",
+        },
+    };
     g_setup = &setup;
 
     for (int i = 0; i < 2 * COINBASE_MATURITY; i++) {

src/test/util/setup_common.cpp

@@ -28,6 +28,7 @@
 #include <util/time.h>
 #include <util/translation.h>
 #include <util/url.h>
+#include <util/vector.h>
 #include <validation.h>
 #include <validationinterface.h>
 
@@ -65,17 +66,34 @@ std::ostream& operator<<(std::ostream& os, const uint256& num)
     return os;
 }
 
-BasicTestingSetup::BasicTestingSetup(const std::string& chainName)
+BasicTestingSetup::BasicTestingSetup(const std::string& chainName, const std::vector<const char*>& extra_args)
     : m_path_root{fs::temp_directory_path() / "test_common_" PACKAGE_NAME / g_insecure_rand_ctx_temp_path.rand256().ToString()}
 {
+    const std::vector<const char*> arguments = Cat(
+        {
+            "dummy",
+            "-printtoconsole=0",
+            "-logtimemicros",
+            "-debug",
+            "-debugexclude=libevent",
+            "-debugexclude=leveldb",
+        },
+        extra_args);
     fs::create_directories(m_path_root);
     gArgs.ForceSetArg("-datadir", m_path_root.string());
     ClearDatadirCache();
+    {
+        SetupServerArgs(m_node);
+        std::string error;
+        const bool success{m_node.args->ParseParameters(arguments.size(), arguments.data(), error)};
+        assert(success);
+        assert(error.empty());
+    }
     SelectParams(chainName);
     SeedInsecureRand();
-    gArgs.ForceSetArg("-printtoconsole", "0");
     if (G_TEST_LOG_FUN) LogInstance().PushBackCallback(G_TEST_LOG_FUN);
     InitLogging();
+    AppInitParameterInteraction();
     LogInstance().StartLogging();
     SHA256AutoDetect();
     ECC_Start();
@@ -95,10 +113,12 @@ BasicTestingSetup::~BasicTestingSetup()
 {
     LogInstance().DisconnectTestLogger();
     fs::remove_all(m_path_root);
+    gArgs.ClearArgs();
     ECC_Stop();
 }
 
-TestingSetup::TestingSetup(const std::string& chainName) : BasicTestingSetup(chainName)
+TestingSetup::TestingSetup(const std::string& chainName, const std::vector<const char*>& extra_args)
+    : BasicTestingSetup(chainName, extra_args)
 {
     const CChainParams& chainparams = Params();
     // Ideally we'd move all the RPC tests to the functional testing framework
@@ -159,6 +179,7 @@ TestingSetup::~TestingSetup()
     g_rpc_node = nullptr;
     m_node.connman.reset();
     m_node.banman.reset();
+    m_node.args = nullptr;
     m_node.mempool = nullptr;
     m_node.scheduler.reset();
     UnloadBlockIndex();

src/test/util/setup_common.h

@@ -73,9 +73,11 @@ static constexpr CAmount CENT{1000000};
  */
 struct BasicTestingSetup {
     ECCVerifyHandle globalVerifyHandle;
+    NodeContext m_node;
 
-    explicit BasicTestingSetup(const std::string& chainName = CBaseChainParams::MAIN);
+    explicit BasicTestingSetup(const std::string& chainName = CBaseChainParams::MAIN, const std::vector<const char*>& extra_args = {});
     ~BasicTestingSetup();
+
 private:
     const fs::path m_path_root;
 };
@@ -84,10 +86,9 @@ struct BasicTestingSetup {
  * Included are coins database, script check threads setup.
  */
 struct TestingSetup : public BasicTestingSetup {
-    NodeContext m_node;
     boost::thread_group threadGroup;
 
-    explicit TestingSetup(const std::string& chainName = CBaseChainParams::MAIN);
+    explicit TestingSetup(const std::string& chainName = CBaseChainParams::MAIN, const std::vector<const char*>& extra_args = {});
     ~TestingSetup();
 };