diff options
author | Luca Muscariello <lumuscar+fdio@cisco.com> | 2019-03-23 14:13:53 +0100 |
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committer | Angelo Mantellini <manangel@cisco.com> | 2019-03-24 14:11:17 +0100 |
commit | eb323e056e747d71867cf965434811c1de925de2 (patch) | |
tree | 23a6096823d795efe448559cf0409a18ab47932d /hicn-light/src/core/connectionManager.c | |
parent | 43562f9f02d35e5d540ab4028a0326c0c7cd4898 (diff) |
[HICN-141] Definition of a C API for hicn-light
Change-Id: Id861f0abe58b1e3c9ba8cc76701da0f9c6801748
Signed-off-by: Luca Muscariello <lumuscar+fdio@cisco.com>
Signed-off-by: Angelo Mantellini <manangel@cisco.com>
Diffstat (limited to 'hicn-light/src/core/connectionManager.c')
-rw-r--r-- | hicn-light/src/core/connectionManager.c | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/hicn-light/src/core/connectionManager.c b/hicn-light/src/core/connectionManager.c deleted file mode 100644 index 2089e1495..000000000 --- a/hicn-light/src/core/connectionManager.c +++ /dev/null @@ -1,196 +0,0 @@ -/* - * 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. - */ - -/** - * The Connection Manager sets itself up as a listener to the Messenger so it - * can take action based on system events. - * - * The Connection Manager queues and then processes in a later time slice the - * messages. - * - */ - -#include <src/config.h> -#include <src/core/connectionManager.h> -#include <src/core/forwarder.h> -#include <src/messenger/messenger.h> -#include <src/messenger/messengerRecipient.h> -#include <src/messenger/missiveDeque.h> -#include <stdio.h> - -#include <parc/algol/parc_Memory.h> - -#include <parc/assert/parc_Assert.h> - -struct connection_manager { - Forwarder *forwarder; - Logger *logger; - - MessengerRecipient *messengerRecipient; - - // we queue missives as they come in to process in our own - // event timeslice - MissiveDeque *missiveQueue; - - // for deferred queue processing - PARCEventTimer *timerEvent; -}; - -/** - * Receives missives from the messenger, queues them, and schedules our - * execution - * - * We defer processing of missives to a later time slice - */ -static void connectionManager_MessengerCallback(MessengerRecipient *recipient, - Missive *missive); - -/** - * Event callback - * - * This is our main run loop to process our queue of messages. It is scheduled - * in {@link connectionManager_MessengerCallback} when the queue becomes - * non-empty. - * - * When we are called here, we have exclusive use of the system, so we will not - * create any message loops - * - * @param [in] fd unused, required for compliance with function prototype - * @param [in] which_event unused, required for compliance with function - * prototype - * @param [in] connManagerVoidPtr A void* to ConnectionManager - * - */ -static void connectionManager_ProcessQueue(int fd, PARCEventType which_event, - void *connManagerVoidPtr); - -static void connectionManager_ProcessClosedMissive( - ConnectionManager *connManager, const Missive *missive); - -// ======================================================== -// Public API - -ConnectionManager *connectionManager_Create(Forwarder *forwarder) { - ConnectionManager *connManager = - parcMemory_AllocateAndClear(sizeof(ConnectionManager)); - parcAssertNotNull(connManager, - "parcMemory_AllocateAndClear(%zu) returned NULL", - sizeof(ConnectionManager)); - connManager->forwarder = forwarder; - connManager->missiveQueue = missiveDeque_Create(); - connManager->logger = logger_Acquire(forwarder_GetLogger(forwarder)); - - Messenger *messenger = forwarder_GetMessenger(connManager->forwarder); - - // creates the timer, but does not start it - PARCEventScheduler *base = - dispatcher_GetEventScheduler(forwarder_GetDispatcher(forwarder)); - connManager->timerEvent = parcEventTimer_Create( - base, 0, connectionManager_ProcessQueue, connManager); - - connManager->messengerRecipient = messengerRecipient_Create( - connManager, connectionManager_MessengerCallback); - messenger_Register(messenger, connManager->messengerRecipient); - return connManager; -} - -void connectionManager_Destroy(ConnectionManager **managerPtr) { - parcAssertNotNull(managerPtr, "Double pointer must be non-null"); - parcAssertNotNull(*managerPtr, "Double pointer must dereference to non-null"); - - ConnectionManager *connManager = *managerPtr; - - Messenger *messenger = forwarder_GetMessenger(connManager->forwarder); - parcEventTimer_Destroy(&(connManager->timerEvent)); - messenger_Unregister(messenger, connManager->messengerRecipient); - messengerRecipient_Destroy(&connManager->messengerRecipient); - missiveDeque_Release(&connManager->missiveQueue); - logger_Release(&connManager->logger); - - parcMemory_Deallocate((void **)&connManager); - *managerPtr = NULL; -} - -// ======================================================== -// Internal Functions - -static void connectionManager_MessengerCallback(MessengerRecipient *recipient, - Missive *missive) { - ConnectionManager *connManager = - messengerRecipient_GetRecipientContext(recipient); - - // we do not release our reference count, we store it until later - // We are called with our own reference, so we do not need to acquire the - // missive here. - missiveDeque_Append(connManager->missiveQueue, missive); - - if (missiveDeque_Size(connManager->missiveQueue) == 1) { - // When it becomes non-empty, schedule {@link - // connectionManager_ProcessQueue} - struct timeval immediateTimeout = {0, 0}; - parcEventTimer_Start(connManager->timerEvent, &immediateTimeout); - } -} - -static void connectionManager_ProcessQueue(int fd, PARCEventType which_event, - void *connManagerVoidPtr) { - ConnectionManager *connManager = (ConnectionManager *)connManagerVoidPtr; - - Missive *missive; - while ((missive = missiveDeque_RemoveFirst(connManager->missiveQueue)) != - NULL) { - switch (missive_GetType(missive)) { - case MissiveType_ConnectionCreate: - // hook to signal that a new connection was created - break; - case MissiveType_ConnectionUp: - // hook to signal that a new connection is up - break; - case MissiveType_ConnectionDown: - // hook to signal that a connection is down - break; - case MissiveType_ConnectionClosed: - connectionManager_ProcessClosedMissive(connManager, missive); - break; - case MissiveType_ConnectionDestroyed: - // hook to signal that a connection was destroyed - break; - default: - parcTrapUnexpectedState("Missive %p of unknown type: %d", - (void *)missive, missive_GetType(missive)); - } - missive_Release(&missive); - } -} - -static void connectionManager_ProcessClosedMissive( - ConnectionManager *connManager, const Missive *missive) { - logger_Log(connManager->logger, LoggerFacility_Core, PARCLogLevel_Debug, - __func__, "Processing CLOSED message for connid %u", - missive_GetConnectionId(missive)); - - ConnectionTable *table = forwarder_GetConnectionTable(connManager->forwarder); - const Connection *conn = - connectionTable_FindById(table, missive_GetConnectionId(missive)); - - if (conn) { - // this will destroy the connection if its the last reference count - connectionTable_Remove(table, conn); - - // remove from FIB - forwarder_RemoveConnectionIdFromRoutes(connManager->forwarder, - missive_GetConnectionId(missive)); - } -} |