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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,147 @@ | ||
| #include "redispipeline.h" | ||
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| namespace swss { | ||
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| RedisPipeline::~RedisPipeline() | ||
| { | ||
| flush(); | ||
| delete m_db; | ||
| } | ||
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| redisReply *RedisPipeline::push(const RedisCommand& command, int expectedType) | ||
| { | ||
| switch (expectedType) | ||
| { | ||
| case REDIS_REPLY_NIL: | ||
| case REDIS_REPLY_STATUS: | ||
| case REDIS_REPLY_INTEGER: | ||
| { | ||
| int rc = redisAppendFormattedCommand(m_db->getContext(), command.c_str(), command.length()); | ||
| if (rc != REDIS_OK) | ||
| { | ||
| // The only reason of error is REDIS_ERR_OOM (Out of memory) | ||
| // ref: https://github.com/redis/hiredis/blob/master/hiredis.c | ||
| throw std::bad_alloc(); | ||
| } | ||
| m_expectedTypes.push(expectedType); | ||
| m_remaining++; | ||
| mayflush(); | ||
| return NULL; | ||
| } | ||
| default: | ||
| { | ||
| flush(); | ||
| RedisReply r(m_db, command, expectedType); | ||
| return r.release(); | ||
| } | ||
| } | ||
| } | ||
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| redisReply *RedisPipeline::push(const RedisCommand& command) | ||
| { | ||
| flush(); | ||
| RedisReply r(m_db, command); | ||
| return r.release(); | ||
| } | ||
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| std::string RedisPipeline::loadRedisScript(const std::string& script) | ||
| { | ||
| RedisCommand loadcmd; | ||
| loadcmd.format("SCRIPT LOAD %s", script.c_str()); | ||
| RedisReply r = push(loadcmd, REDIS_REPLY_STRING); | ||
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| std::string sha = r.getReply<std::string>(); | ||
| return sha; | ||
| } | ||
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| void RedisPipeline::flush() { | ||
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| lastHeartBeat = std::chrono::steady_clock::now(); | ||
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| if (m_remaining == 0) { | ||
| return; | ||
| } | ||
|
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| while(m_remaining) | ||
| { | ||
| // Construct an object to use its dtor, so that resource is released | ||
| RedisReply r(pop()); | ||
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| } | ||
| publish(); | ||
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| } | ||
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| int RedisPipeline::getIdleTime(std::chrono::time_point<std::chrono::steady_clock> tcurrent) | ||
| { | ||
| return static_cast<int>(std::chrono::duration_cast<std::chrono::milliseconds>(tcurrent - lastHeartBeat).count()); | ||
| } | ||
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| size_t RedisPipeline::size() | ||
| { | ||
| return m_remaining; | ||
| } | ||
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| int RedisPipeline::getDbId() | ||
| { | ||
| return m_db->getDbId(); | ||
| } | ||
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| std::string RedisPipeline::getDbName() | ||
| { | ||
| return m_db->getDbName(); | ||
| } | ||
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| DBConnector *RedisPipeline::getDBConnector() | ||
| { | ||
| return m_db; | ||
| } | ||
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| void RedisPipeline::addChannel(std::string channel) { | ||
| m_luaPub += | ||
| "redis.call('PUBLISH', '" + channel + "', 'G');"; | ||
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| m_shaPub = loadRedisScript(m_luaPub); | ||
| } | ||
|
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| redisReply *RedisPipeline::pop() | ||
| { | ||
| if (m_remaining == 0) return NULL; | ||
|
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| redisReply *reply; | ||
| int rc = redisGetReply(m_db->getContext(), (void**)&reply); | ||
| if (rc != REDIS_OK) | ||
| { | ||
| throw RedisError("Failed to redisGetReply in RedisPipeline::pop", m_db->getContext()); | ||
| } | ||
| RedisReply r(reply); | ||
| m_remaining--; | ||
|
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| int expectedType = m_expectedTypes.front(); | ||
| m_expectedTypes.pop(); | ||
| r.checkReplyType(expectedType); | ||
| if (expectedType == REDIS_REPLY_STATUS) | ||
| { | ||
| r.checkStatusOK(); | ||
| } | ||
| return r.release(); | ||
| } | ||
|
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| void RedisPipeline::mayflush() | ||
| { | ||
| if (m_remaining >= COMMAND_MAX) | ||
| flush(); | ||
| } | ||
|
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| void RedisPipeline::publish() { | ||
| if (m_shaPub == "") { | ||
| return; | ||
| } | ||
| RedisCommand cmd; | ||
| cmd.format( | ||
| "EVALSHA %s 0", | ||
| m_shaPub.c_str()); | ||
| RedisReply r(m_db, cmd); | ||
| } | ||
|
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| } // namespace swss |
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