This is the first commit of the hicn projectv19.01

Change-Id: I6f2544ad9b9f8891c88cc4bcce3cf19bd3cc863f
Signed-off-by: Luca Muscariello <lumuscar+fdio@cisco.com>

1 files changed, 113 insertions, 0 deletions

diff --git a/hicn-light/src/processor/matchingRulesTable.h b/hicn-light/src/processor/matchingRulesTable.h
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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.
+ */
+
+/**
+ * @header matchingRulesTable
+ * @abstract A generic table (void *) that matches a Message
+ * @discussion
+ *     Matching is done based on Name
+ *
+ *     When used in the PIT, one calls
+ * <code>matchingRulesTable_AddToBestTable()</code> to add an interest to the
+ * "best" (i.e. most restrictive match) table, then calls
+ *     <code>matchingRulesTable_GetUnion()</code> on a content object to match
+ * against all of them.
+ *
+ *     When used in a ContentStore, one calls
+ * <code>matchingRulesTable_AddToAllTables()</code> to index a Content Object in
+ * all the tables.  one then calls <code>matchingRulesTable_Get()</code> with an
+ * Interest to do the "best" matching (i.e by hash first, then keyid, then just
+ * by name).
+ *
+ */
+
+#ifndef matchingRulesTable_h
+#define matchingRulesTable_h
+
+#include <parc/algol/parc_ArrayList.h>
+#include <parc/algol/parc_HashCodeTable.h>
+#include <src/core/message.h>
+
+struct matching_rules_table;
+typedef struct matching_rules_table MatchingRulesTable;
+
+/**
+ * Creates a MatchigRulesTable and specifies the function to call to de-allocate
+ * an entry
+ *
+ * The datadestroyer will be called when an entry is removed from a table. It
+ * may be NULL.
+ */
+MatchingRulesTable *matchingRulesTable_Create(
+    PARCHashCodeTable_Destroyer dataDestroyer);
+
+/**
+ * Destroys the table and removes all stored elements.
+ *
+ */
+void matchingRulesTable_Destroy(MatchingRulesTable **tablePtr);
+
+/**
+ * @function matchingRulesTable_Get
+ * @abstract Returns the data item that best matches the message.
+ * @discussion
+ *   Indexed by NameAndContentObjectHash, NameAndKeyId, and Name, in that order.
+ *
+ * @return NULL if nothing matches, otherwise the stored value
+ */
+void *matchingRulesTable_Get(const MatchingRulesTable *table,
+                             const Message *message);
+
+/**
+ * @function matchingRulesTable_GetUnion
+ * @abstract Returns matching data items from all index tables.
+ * @discussion
+ *   The PARCArrayList does not have an item destructor, so destroying it will
+ * not affect the underlying data.
+ *
+ * @return Will not be NULL, but may be empty
+ */
+PARCArrayList *matchingRulesTable_GetUnion(const MatchingRulesTable *table,
+                                           const Message *message);
+
+/**
+ * @function matchingRulesTable_Add
+ * @abstract Adds the data to the best table
+ * @discussion
+ *   The key must be derived from the data and destroyed when the data is
+ * destroyed.  Only the data destroyer is called.
+ *
+ *   No duplicates are allowed, will return false if not added.
+ *
+ * @return true if unique key and added, false if duplicate and no action taken.
+ */
+bool matchingRulesTable_AddToBestTable(MatchingRulesTable *rulesTable,
+                                       Message *key, void *data);
+
+/**
+ * @function matchingRulesTable_Remove
+ * @abstract Removes the matching entry from the best match table, calling the
+ * destroyer on the data.
+ */
+void matchingRulesTable_RemoveFromBest(MatchingRulesTable *rulesTable,
+                                       const Message *message);
+
+/**
+ * @function matchingRulesTable_RemoveFromAll
+ * @abstract Removes the message from all tables
+ */
+void matchingRulesTable_RemoveFromAll(MatchingRulesTable *rulesTable,
+                                      const Message *message);
+#endif  // matchingRulesTable_h