feat: Use beast metrics

include/xrpl/core/CollectorManager.h

@@ -0,0 +1,24 @@
+#pragma once
+
+#include <xrpl/basics/BasicConfig.h>
+#include <xrpl/beast/insight/Insight.h>
+
+namespace xrpl {
+
+/** Provides the beast::insight::Collector service. */
+class CollectorManager
+{
+public:
+    virtual ~CollectorManager() = default;
+
+    virtual beast::insight::Collector::ptr const&
+    collector() = 0;
+
+    virtual beast::insight::Group::ptr const&
+    group(std::string const& name) = 0;
+};
+
+std::unique_ptr<CollectorManager>
+makeCollectorManager(Section const& params, beast::Journal journal);
+
+}  // namespace xrpl

include/xrpl/tx/wasm/HostFunc.h

@@ -2,6 +2,7 @@
 
 #include <xrpl/basics/Expected.h>
 #include <xrpl/basics/Slice.h>
+#include <xrpl/beast/insight/Event.h>
 #include <xrpl/beast/utility/Journal.h>
 #include <xrpl/protocol/AccountID.h>
 #include <xrpl/protocol/Asset.h>
@@ -121,6 +122,12 @@ struct HostFunctions
         return j;
     }
 
+    [[nodiscard]] virtual beast::insight::Event
+    executionTimeEvent(std::string_view name) const
+    {
+        return {};
+    }
+
     [[nodiscard]] virtual bool
     checkSelf() const
     {

include/xrpl/tx/wasm/HostFuncImpl.h

@@ -1,5 +1,6 @@
 #pragma once
 
+#include <xrpl/core/CollectorManager.h>
 #include <xrpl/tx/ApplyContext.h>
 #include <xrpl/tx/wasm/HostFunc.h>
 
@@ -77,6 +78,15 @@ public:
         return rt_;
     }
 
+    beast::insight::Event
+    executionTimeEvent(std::string_view name) const override
+    {
+        return ctx_.registry.get()
+            .getCollectorManager()
+            .group(std::string{name.data(), name.size()})
+            ->makeEvent("finish_time");
+    }
+
     bool
     checkSelf() const override
     {