diff --git a/control/json/triggers/trigger.hpp b/control/json/triggers/trigger.hpp
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+++ b/control/json/triggers/trigger.hpp
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+/**
+ * Copyright © 2021 IBM Corporation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#pragma once
+
+#include "action.hpp"
+#include "manager.hpp"
+
+#include <nlohmann/json.hpp>
+
+#include <functional>
+#include <map>
+#include <memory>
+#include <vector>
+
+namespace phosphor::fan::control::json::trigger
+{
+
+using json = nlohmann::json;
+
+// Trigger creation function
+using createTrigger =
+    std::function<void(const json&, const std::string&, Manager*,
+                       std::vector<std::unique_ptr<ActionBase>>&)>;
+
+// Mapping of trigger class name to its creation function
+static const std::map<std::string, createTrigger> triggers = {};
+
+} // namespace phosphor::fan::control::json::trigger