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Diffstat (limited to 'hicn-light/src/messenger/messengerRecipient.h')
-rwxr-xr-x | hicn-light/src/messenger/messengerRecipient.h | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/hicn-light/src/messenger/messengerRecipient.h b/hicn-light/src/messenger/messengerRecipient.h new file mode 100755 index 000000000..66d8f40f5 --- /dev/null +++ b/hicn-light/src/messenger/messengerRecipient.h @@ -0,0 +1,104 @@ +/* + * 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 messengerRecipient.h + * @brief A recipient represents the entity that will recieve a Missive from the + * Messenger. + * + * A recipient is identified by the pair (contenxt, callback). The context is + * the recipients context, such as it's object pointer. The callback is the + * function the recipient uses to receive a Missive. + * + * If the receiver is going to do a lot of work or potentially send other + * missives, the receiver should queue the received notifications and process + * them in its own slice. + * + * A recipient will receive a reference counted copy of the missive, so it must + * call + * {@link missive_Release} on it. + * + * + */ + +#ifndef messengerRecipient_h +#define messengerRecipient_h + +#include <src/messenger/missive.h> + +struct messenger_recipient; +typedef struct messenger_recipient MessengerRecipient; + +/** + * @typedef MessengerRecipientCallback + * @abstract A recipient implements a callback to receive Missives. + * @constant recipient The recipient to recieve the missive + * @constant missive The missive, recipient must call {@link missive_Release} on + * it + */ +typedef void(MessengerRecipientCallback)(MessengerRecipient *recipient, + Missive *missive); + +/** + * Creates a Recipient, which represents a reciever of missives. + * + * Creates a Recipient that can be registerd with the Messenger using {@link + * messenger_Register}. + * + * @param [in] recipientContext This pointer will be passed back to the + * recipient with each missive, may be NULL + * @param [in] recipientCallback The function that receives the missive, must be + * non-NULL. + * + * @return non-null A recipient object + */ +MessengerRecipient *messengerRecipient_Create( + void *recipientContext, MessengerRecipientCallback *recipientCallback); + +/** + * Destroys a recipient. You should unregister it first. + * + * Destroying a recipient does not unregister it, so be sure to call + * {@link messenger_Unregister} first. + * + * @param [in,out] recipientPtr Double pointer to the recipient to destroy, will + * be NULL'd. + */ +void messengerRecipient_Destroy(MessengerRecipient **recipientPtr); + +/** + * Returns the recipient context passed on Create + * + * @param [in] recipient The recipient object + * + * @return pointer The context pointer used to create the object, maybe NULL + */ +void *messengerRecipient_GetRecipientContext(MessengerRecipient *recipient); + +/** + * Delivers a Missive to the recipient + * + * Passes the missive to the recipients callback. + * + * A recipient will receive a reference counted copy of the missive, so it must + * call + * {@link missive_Release} on it. + * + * @param [in] recipient The receiver + * @param [in] missive The message to send + */ +void messengerRecipient_Deliver(MessengerRecipient *recipient, + Missive *missive); +#endif // messengerRecipient_h |