feat: Add --definitions flag and artifact

.github/workflows/reusable-build-test-config.yml

@@ -207,6 +207,20 @@ jobs:
           retention-days: 3
           if-no-files-found: error
 
+      - name: Export server definitions
+        if: ${{ github.event.repository.visibility == 'public' && inputs.config_name == 'debian-bookworm-gcc-13-amd64-release' }}
+        working-directory: ${{ env.BUILD_DIR }}
+        run: ./xrpld --definitions | python3 -m json.tool > server_definitions.json
+
+      - name: Upload server definitions
+        if: ${{ github.event.repository.visibility == 'public' && inputs.config_name == 'debian-bookworm-gcc-13-amd64-release' }}
+        uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f # v7.0.0
+        with:
+          name: server-definitions
+          path: ${{ env.BUILD_DIR }}/server_definitions.json
+          retention-days: 3
+          if-no-files-found: error
+
       - name: Check linking (Linux)
         if: ${{ runner.os == 'Linux' && env.SANITIZERS_ENABLED == 'false' }}
         working-directory: ${{ env.BUILD_DIR }}

src/xrpld/app/main/Main.cpp

@@ -3,10 +3,12 @@
 #include <xrpld/core/ConfigSections.h>
 #include <xrpld/core/TimeKeeper.h>
 #include <xrpld/rpc/RPCCall.h>
+#include <xrpld/rpc/handlers/Handlers.h>
 
 #include <xrpl/basics/Log.h>
 #include <xrpl/beast/core/CurrentThreadName.h>
 #include <xrpl/git/Git.h>
+#include <xrpl/json/json_writer.h>
 #include <xrpl/protocol/BuildInfo.h>
 #include <xrpl/server/Vacuum.h>
 
@@ -358,10 +360,11 @@
         "silent", "No output to the console after startup.")("standalone,a", "Run with no peers.")(
         "verbose,v", "Verbose logging.")
 
-        ("force_ledger_present_range",
-         po::value<std::string>(),
-         "Specify the range of present ledgers for testing purposes. Min and "
-         "max values are comma separated.")("version", "Display the build version.");
+        ("definitions", "Output server definitions as JSON and exit.")(
+            "force_ledger_present_range",
+            po::value<std::string>(),
+            "Specify the range of present ledgers for testing purposes. Min and "
+            "max values are comma separated.")("version", "Display the build version.");
 
     po::options_description data("Ledger/Data Options");
     data.add_options()("import", importText.c_str())(
@@ -489,6 +492,12 @@
         return 0;
     }
 
+    if (vm.contains("definitions"))
+    {
+        std::cout << Json::FastWriter().write(getStaticServerDefinitions());
+        return 0;
+    }
+
 #ifndef ENABLE_TESTS
     if (vm.count("unittest") || vm.count("unittest-child"))
     {

src/xrpld/rpc/handlers/Handlers.h

@@ -107,6 +107,8 @@ doRipplePathFind(RPC::JsonContext&);
 Json::Value
 doServerDefinitions(RPC::JsonContext&);
 Json::Value
+getStaticServerDefinitions();
+Json::Value
 doServerInfo(RPC::JsonContext&);  // for humans
 Json::Value
 doServerState(RPC::JsonContext&);  // for machines

src/xrpld/rpc/handlers/server_info/ServerDefinitions.cpp

@@ -387,4 +387,11 @@
     return defs.get();
 }
 
+Json::Value
+getStaticServerDefinitions()
+{
+    static detail::ServerDefinitions const defs{};
+    return defs.get();
+}
+
 }  // namespace xrpl