Add overrideMacros property to MacroResolver

lib/icinga/apiactions.cpp

@@ -15,6 +15,7 @@
 #include "remote/httputility.hpp"
 #include "base/utility.hpp"
 #include "base/convert.hpp"
+#include "base/defer.hpp"
 #include "remote/actionshandler.hpp"
 #include <fstream>
 
@@ -641,6 +642,12 @@ Dictionary::Ptr ApiActions::ExecuteCommand(const ConfigObject::Ptr& object,
 
 	/* Check if resolved_command exists and it is of type command_type */
 	Dictionary::Ptr execMacros = new Dictionary();
+
+	MacroResolver::overrideMacros = execMacros;
+	Defer o ([]() {
+		MacroResolver::overrideMacros = nullptr;
+	});
+
 	if (command_type == "CheckCommand") {
 		CheckCommand::Ptr cmd = CheckCommand::GetByName(resolved_command);
 		if (!cmd)

lib/icinga/macroprocessor.cpp

@@ -15,6 +15,8 @@
 
 using namespace icinga;
 
+thread_local Dictionary::Ptr MacroResolver::overrideMacros;
+
 Value MacroProcessor::ResolveMacros(const Value& str, const ResolverList& resolvers,
 	const CheckResult::Ptr& cr, String *missingMacro,
 	const MacroProcessor::EscapeCallback& escapeFn, const Dictionary::Ptr& resolvedMacros,

lib/icinga/macroresolver.hpp

@@ -21,6 +21,8 @@ class MacroResolver
 public:
 	DECLARE_PTR_TYPEDEFS(MacroResolver);
 
+	static thread_local Dictionary::Ptr overrideMacros;
+
 	virtual bool ResolveMacro(const String& macro, const CheckResult::Ptr& cr, Value *result) const = 0;
 };
 

lib/methods/pluginchecktask.cpp

@@ -29,6 +29,9 @@ void PluginCheckTask::ScriptFunc(const Checkable::Ptr& checkable, const CheckRes
 	tie(host, service) = GetHostService(checkable);
 
 	MacroProcessor::ResolverList resolvers;
+	if (MacroResolver::overrideMacros)
+		resolvers.emplace_back("override", MacroResolver::overrideMacros);
+
 	if (service)
 		resolvers.emplace_back("service", service);
 	resolvers.emplace_back("host", host);