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+/*
+ * Copyright (c) 2017-2019 Cisco and/or its affiliates.
+ * 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.
+ */
+
+/**
+ * @file messageProcessor.h
+ * @brief Executes the set of rules dictated by the PacketType
+ *
+ * This is a "run-to-completion" handling of a message based on the PacketType.
+ *
+ * The MessageProcessor also owns the PIT and FIB tables.
+ *
+ */
+
+#ifndef messageProcessor_h
+#define messageProcessor_h
+
+#include <src/content_store/contentStoreInterface.h>
+#include <src/core/forwarder.h>
+#include <src/core/message.h>
+
+#include <src/utils/commands.h>
+
+struct message_processor;
+typedef struct message_processor MessageProcessor;
+
+/**
+ * Allocates a MessageProcessor along with PIT, FIB and ContentStore tables
+ *
+ * The hicn-light pointer is primarily used for logging (forwarder_Log), getting
+ * the configuration, and accessing the connection table.
+ *
+ * @param [in] Pointer to owning hicn-light process
+ *
+ * @retval non-null An allocated message processor
+ * @retval null An error
+ *
+ */
+MessageProcessor *messageProcessor_Create(Forwarder *forwarder);
+
+/**
+ * Deallocates a message processor an all internal tables
+ *
+ * @param [in,out] processorPtr Pointer to message processor to de-allocate,
+ * will be NULL'd.
+ */
+void messageProcessor_Destroy(MessageProcessor **processorPtr);
+
+/**
+ * @function messageProcessor_Receive
+ * @abstract Process the message, takes ownership of the memory.
+ * @discussion
+ * Will call destroy on the memory when done with it, so if the caller wants
+ * to keep it, make a reference counted copy.
+ *
+ * Receive may modify some fields in the message, such as the HopLimit field.
+ */
+void messageProcessor_Receive(MessageProcessor *procesor, Message *message);
+
+/**
+ * Adds or updates a route in the FIB
+ *
+ * If the route already exists, it is replaced
+ *
+ * @param [in] procesor An allocated message processor
+ * @param [in] route The route to update
+ *
+ * @retval true added or updated
+ * @retval false An error
+ */
+bool messageProcessor_AddOrUpdateRoute(MessageProcessor *processor,
+ add_route_command *control,
+ unsigned ifidx);
+
+/**
+ * Removes a route from the FIB
+ *
+ * Removes a specific nexthop for a route. If there are no nexthops left after
+ * the removal, the entire route is deleted from the FIB.
+ *
+ * @param [in] procesor An allocated message processor
+ * @param [in] route The route to remove
+ *
+ * @retval true Route completely removed
+ * @retval false There is still a nexthop for the route
+ */
+
+bool messageProcessor_RemoveRoute(MessageProcessor *processor,
+ remove_route_command *control,
+ unsigned ifidx);
+
+/**
+ * Removes a given connection id from all FIB entries
+ *
+ * Iterates the FIB and removes the given connection ID from every route.
+ */
+void messageProcessor_RemoveConnectionIdFromRoutes(MessageProcessor *processor,
+ unsigned connectionId);
+
+/**
+ * Returns a list of all FIB entries
+ *
+ * You must destroy the list.
+ *
+ * @retval non-null The list of FIB entries
+ * @retval null An error
+ */
+FibEntryList *messageProcessor_GetFibEntries(MessageProcessor *processor);
+
+/**
+ * Adjusts the ContentStore to the given size.
+ *
+ * This will destroy and re-create the content store, so any cached objects will
+ * be lost.
+ *
+ */
+void messageProcessor_SetContentObjectStoreSize(MessageProcessor *processor,
+ size_t maximumContentStoreSize);
+
+/**
+ * Return the interface to the currently instantiated ContentStore, if any.
+ *
+ * @param [in] processor the `MessageProcessor` from which to return the
+ * ContentStoreInterface.
+ *
+ */
+ContentStoreInterface *messageProcessor_GetContentObjectStore(
+ const MessageProcessor *processor);
+
+void messageProcessor_SetCacheStoreFlag(MessageProcessor *processor, bool val);
+
+bool messageProcessor_GetCacheStoreFlag(MessageProcessor *processor);
+
+void messageProcessor_SetCacheServeFlag(MessageProcessor *processor, bool val);
+
+bool messageProcessor_GetCacheServeFlag(MessageProcessor *processor);
+
+void messageProcessor_ClearCache(MessageProcessor *processor);
+
+void processor_SetStrategy(MessageProcessor *processor, Name *prefix,
+ strategy_type strategy);
+
+#ifdef WITH_MAPME
+
+/**
+ * @function messageProcessor_getFib
+ * @abstract Returns the hICN processor's FIB.
+ * @param [in] forwarder - Pointer to the hICN processor.
+ * @returns Pointer to the hICN FIB.
+ */
+FIB *messageProcessor_getFib(MessageProcessor *processor);
+
+#endif /* WITH_MAPME */
+
+#endif // messageProcessor_h