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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.
*/
#include <hicn/hicn-light/config.h>
#include <stdio.h>
#include <parc/algol/parc_Hash.h>
#include <parc/algol/parc_Memory.h>
#include <parc/assert/parc_Assert.h>
#include <hicn/processor/hashTableFunction.h>
#include <hicn/processor/matchingRulesTable.h>
struct matching_rules_table {
// using this wrapper we can manatain multiple hash tables indexed in
// different ways
// for now we use only a table indexed by name
PARCHashCodeTable *tableByName;
PARCHashCodeTable_Destroyer dataDestroyer;
};
static PARCHashCodeTable *matchingRulesTable_GetTableForMessage(
const MatchingRulesTable *pit, const Message *interestMessage);
// ======================================================================
MatchingRulesTable *matchingRulesTable_Create(
PARCHashCodeTable_Destroyer dataDestroyer) {
size_t initialSize = 65535;
MatchingRulesTable *table =
parcMemory_AllocateAndClear(sizeof(MatchingRulesTable));
parcAssertNotNull(table, "parcMemory_AllocateAndClear(%zu) returned NULL",
sizeof(MatchingRulesTable));
table->dataDestroyer = dataDestroyer;
table->tableByName = parcHashCodeTable_Create_Size(
hashTableFunction_MessageNameEquals,
hashTableFunction_MessageNameHashCode, NULL, dataDestroyer, initialSize);
return table;
}
void matchingRulesTable_Destroy(MatchingRulesTable **tablePtr) {
parcAssertNotNull(tablePtr, "Parameter must be non-null double pointer");
parcAssertNotNull(*tablePtr,
"Parameter must dereference to non-null pointer");
MatchingRulesTable *table = *tablePtr;
parcHashCodeTable_Destroy(&table->tableByName);
parcMemory_Deallocate((void **)&table);
*tablePtr = NULL;
}
void *matchingRulesTable_Get(const MatchingRulesTable *rulesTable,
const Message *message) {
parcAssertNotNull(rulesTable, "Parameter rulesTable must be non-null");
parcAssertNotNull(message, "Parameter message must be non-null");
PARCHashCodeTable *hashTable =
matchingRulesTable_GetTableForMessage(rulesTable, message);
return parcHashCodeTable_Get(hashTable, message);
}
PARCArrayList *matchingRulesTable_GetUnion(const MatchingRulesTable *table,
const Message *message) {
PARCArrayList *list = parcArrayList_Create_Capacity(NULL, NULL, 3);
void *dataByName = parcHashCodeTable_Get(table->tableByName, message);
if (dataByName) {
parcArrayList_Add(list, dataByName);
}
return list;
}
void matchingRulesTable_RemoveFromBest(MatchingRulesTable *rulesTable,
const Message *message) {
parcAssertNotNull(rulesTable, "Parameter rulesTable must be non-null");
parcAssertNotNull(message, "Parameter message must be non-null");
PARCHashCodeTable *hashTable =
matchingRulesTable_GetTableForMessage(rulesTable, message);
parcHashCodeTable_Del(hashTable, message);
}
void matchingRulesTable_RemoveFromAll(MatchingRulesTable *rulesTable,
const Message *message) {
parcAssertNotNull(rulesTable, "Parameter rulesTable must be non-null");
parcAssertNotNull(message, "Parameter message must be non-null");
parcHashCodeTable_Del(rulesTable->tableByName, message);
}
bool matchingRulesTable_AddToBestTable(MatchingRulesTable *rulesTable,
Message *key, void *data) {
parcAssertNotNull(rulesTable, "Parameter rulesTable must be non-null");
parcAssertNotNull(key, "Parameter key must be non-null");
parcAssertNotNull(data, "Parameter data must be non-null");
PARCHashCodeTable *hashTable =
matchingRulesTable_GetTableForMessage(rulesTable, key);
bool success = parcHashCodeTable_Add(hashTable, key, data);
return success;
}
// ========================================================================================
static PARCHashCodeTable *matchingRulesTable_GetTableForMessage(
const MatchingRulesTable *pit, const Message *interestMessage) {
PARCHashCodeTable *table;
table = pit->tableByName;
return table;
}
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