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yang
2025-07-14 22:24:27 +08:00
parent daacc18ecf
commit 4af19ef574
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Plugins/MqttClient/Source/DTMqtt/MqttC/MQTTPersistence.h Normal file
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// Copyright 2023 Dexter.Wan. All Rights Reserved.
// EMail: 45141961@qq.com
#if !defined(MQTTPERSISTENCE_H)
#define MQTTPERSISTENCE_H
#if defined(__cplusplus)
extern "C" {
#endif
#include "Clients.h"
#include "MQTTProperties.h"
/** Stem of the key for a sent PUBLISH QoS1 or QoS2 */
#define PERSISTENCE_PUBLISH_SENT "s-"
/** Stem of the key for a sent PUBREL */
#define PERSISTENCE_PUBREL "sc-"
/** Stem of the key for a received PUBLISH QoS2 */
#define PERSISTENCE_PUBLISH_RECEIVED "r-"
/** Stem of the key for a sent MQTT V5 PUBLISH QoS1 or QoS2 */
#define PERSISTENCE_V5_PUBLISH_SENT "s5-"
/** Stem of the key for a sent MQTT V5 PUBREL */
#define PERSISTENCE_V5_PUBREL "sc5-"
/** Stem of the key for a received MQTT V5 PUBLISH QoS2 */
#define PERSISTENCE_V5_PUBLISH_RECEIVED "r5-"
/** Stem of the key for an async client command */
#define PERSISTENCE_COMMAND_KEY "c-"
/** Stem of the key for an MQTT V5 async client command */
#define PERSISTENCE_V5_COMMAND_KEY "c5-"
/** Stem of the key for an client incoming message queue */
#define PERSISTENCE_QUEUE_KEY "q-"
/** Stem of the key for an MQTT V5 incoming message queue */
#define PERSISTENCE_V5_QUEUE_KEY "q5-"
/** Maximum length of a stem for a persistence key */
#define PERSISTENCE_MAX_STEM_LENGTH 4
/** Maximum allowed length of a persistence key */
#define PERSISTENCE_MAX_KEY_LENGTH 10
/** Maximum size of an integer sequence number appended to a persistence key */
#define PERSISTENCE_SEQNO_LIMIT 1000000 /*10^(PERSISTENCE_MAX_KEY_LENGTH - PERSISTENCE_MAX_STEM_LENGTH)*/
int MQTTPersistence_create(MQTTClient_persistence** per, int type, void* pcontext);
int MQTTPersistence_initialize(Clients* c, const char* serverURI);
int MQTTPersistence_close(Clients* c);
int MQTTPersistence_clear(Clients* c);
int MQTTPersistence_restorePackets(Clients* c);
void* MQTTPersistence_restorePacket(int MQTTVersion, char* buffer, size_t buflen);
void MQTTPersistence_insertInOrder(List* list, void* content, size_t size);
int MQTTPersistence_putPacket(SOCKET socket, char* buf0, size_t buf0len, int count,
char** buffers, size_t* buflens, int htype, int msgId, int scr, int MQTTVersion);
int MQTTPersistence_remove(Clients* c, char* type, int qos, int msgId);
void MQTTPersistence_wrapMsgID(Clients *c);
typedef struct
{
char struct_id[4];
int struct_version;
int payloadlen;
void* payload;
int qos;
int retained;
int dup;
int msgid;
MQTTProperties properties;
} MQTTPersistence_message;
typedef struct
{
MQTTPersistence_message* msg;
char* topicName;
int topicLen;
unsigned int seqno; /* only used on restore */
} MQTTPersistence_qEntry;
int MQTTPersistence_unpersistQueueEntry(Clients* client, MQTTPersistence_qEntry* qe);
int MQTTPersistence_persistQueueEntry(Clients* aclient, MQTTPersistence_qEntry* qe);
int MQTTPersistence_restoreMessageQueue(Clients* c);
#ifdef __cplusplus
}
#endif
#endif