Command Process

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Command Process

Redis 명령 처리(실행) 과정을 함수로 표시했습니다.
이 문서는 버전 7.0.8을 기준으로 작성했습니다.

명령 처리 흐름

Command Process

전파(AOF/Repl) 흐름

Command Process

관련 함수들

createClient() networking.c

readQueryFromClient() networking.c

processInputBuffer() networking.c

processCommandAndResetClient() networking.c

processCommand() server.c

call() server.c

afterCommand() server.c

propagatePendingCommands() server.c

propagateNow() server.c

alsoPropagate() server.c

shouldPropagate() server.c

redisOpArrayAppend(), redisOpArrayInit(), redisOpArrayFree()


networking.c Functions

소스 파일 networking.c에 있는 함수들입니다. 버전 7.0.8 기준으로 작성했습니다.

  1. sdsZmallocSize()
  2. getStringObjectSdsUsedMemory() -> sdsZmallocSize(o->ptr);
  3. getStringObjectLen() -> sdslen(o->ptr);
  4. dupClientReplyValue()
  5. freeClientReplyValue()
  6. istMatchObjects()
  7. linkClient() -> listAddNodeTail(server.clients,c);
  8. clientSetDefaultAuth() -> c->user = DefaultUser;
  9. authRequired()
  10. createClient() -> connSetReadHandler(conn, readQueryFromClient);
  11. installClientWriteHandler() -> connSetWriteHandlerWithBarrier(c->conn, sendReplyToClient, ae_barrier)
  12. putClientInPendingWriteQueue() -> listAddNodeHead(server.clients_pending_write,c);
  13. prepareClientToWrite() -> putClientInPendingWriteQueue(c);
  14. ----- Low level functions to add more data to output buffers. -----
  15. _addReplyToBuffer() -> memcpy(c->buf+c->bufpos, s, reply_len);
  16. _addReplyProtoToList()
    if (tail) memcpy(tail->buf + tail->used, s, copy);
    if (len) memcpy(tail->buf, s, len);
  17. _addReplyToBufferOrList()
    size_t reply_len = _addReplyToBuffer(c,s,len);
    if (len > reply_len) _addReplyProtoToList(c,s+reply_len,len-reply_len);
  18. addReply()
    prepareClientToWrite()
    _addReplyToBufferOrList()
  19. addReplySds()
    prepareClientToWrite()
    _addReplyToBufferOrList()
  20. addReplyProto()
    prepareClientToWrite()
    _addReplyToBufferOrList()
  21. addReplyErrorLength()
  22. afterErrorReply()
  23. addReplyErrorObject()
  24. addReplyOrErrorObject()
  25. addReplyError()
  26. addReplyErrorSdsEx()
  27. addReplyErrorSds()
  28. addReplyErrorSdsSafe()
  29. addReplyErrorFormatInternal()
  30. addReplyErrorFormatEx()
  31. addReplyErrorFormat()
  32. addReplyErrorArity()
  33. addReplyErrorExpireTime()
  34. addReplyStatusLength()
  35. addReplyStatus()
  36. addReplyStatusFormat()
  37. trimReplyUnusedTailSpace()
  38. addReplyDeferredLen()
  39. setDeferredReply()
  40. setDeferredAggregateLen()
  41. setDeferredArrayLen()
  42. setDeferredMapLen()
  43. setDeferredSetLen()
  44. setDeferredAttributeLen()
  45. setDeferredPushLen()
  46. addReplyDouble()
  47. addReplyBigNum()
  48. addReplyHumanLongDouble()
  49. addReplyLongLongWithPrefix()
  50. addReplyLongLong()
  51. addReplyAggregateLen()
  52. addReplyArrayLen()
  53. addReplyMapLen()
  54. addReplySetLen()
  55. addReplyAttributeLen()
  56. addReplyPushLen()
  57. addReplyNull()
  58. addReplyBool()
  59. addReplyNullArray()
  60. addReplyBulkLen()
  61. addReplyBulk()
  62. addReplyBulkCBuffer()
  63. addReplyBulkSds()
  64. setDeferredReplyBulkSds()
  65. addReplyBulkCString()
  66. addReplyBulkLongLong()
  67. addReplyVerbatim()
  68. addReplyHelp()
  69. addReplySubcommandSyntaxError()
  70. AddReplyFromClient()
  71. deferredAfterErrorReply()
  72. copyReplicaOutputBuffer()
  73. clientHasPendingReplies()
  74. islocalClient()
  75. clientAcceptHandler()
  76. acceptCommonHandler()
  77. acceptTcpHandler()
  78. acceptTLSHandler()
  79. acceptUnixHandler()
  80. freeClientOriginalArgv()
  81. freeClientArgv()
  82. disconnectSlaves()
  83. anyOtherSlaveWaitRdb()
  84. unlinkClient()
  85. clearClientConnectionState()
  86. freeClient()
  87. freeClientAsync()
  88. logInvalidUseAndFreeClientAsync()
  89. beforeNextClient()
  90. freeClientsInAsyncFreeQueue()
  91. lookupClientByID()
  92. _writevToClient()
  93. _writeToClient()
  94. writeToClient()
  95. sendReplyToClient()
  96. handleClientsWithPendingWrites()
  97. resetClient()
  98. protectClient()
  99. unprotectClient()
  100. processInlineBuffer() -> argc와 argv를 만든다.
  101. setProtocolError()
  102. processMultibulkBuffer()
  103. commandProcessed()
  104. processCommandAndResetClient()
  105. processPendingCommandAndInputBuffer() -> processInputBuffer()
  106. processInputBuffer()
  107. readQueryFromClient()
    connRead()
    processInputBuffer()
  108. genClientAddrString()
  109. getClientPeerId()
  110. getClientSockname()
  111. catClientInfoString()
  112. getAllClientsInfoString()
  113. clientSetName()
  114. clientSetNameOrReply()
  115. resetCommand()
  116. quitCommand()
  117. clientCommand()
  118. helloCommand()
  119. securityWarningCommand()
  120. retainOriginalCommandVector()
  121. redactClientCommandArgument()
  122. rewriteClientCommandVector()
  123. replaceClientCommandVector()
  124. rewriteClientCommandArgument()
  125. getClientOutputBufferMemoryUsage()
  126. getClientMemoryUsage()
  127. getClientType()
  128. getClientTypeByName()
  129. getClientTypeName()
  130. checkClientOutputBufferLimits()
  131. closeClientOnOutputBufferLimitReached()
  132. flushSlavesOutputBuffers()
  133. updateClientPauseTypeAndEndTime()
  134. unblockPostponedClients()
  135. pauseClients()
  136. unpauseClients()
  137. areClientsPaused()
  138. checkClientPauseTimeoutAndReturnIfPaused()
  139. processEventsWhileBlocked()
  140. ----- Threaded I/O -----
  141. getIOPendingCount()
  142. setIOPendingCount()
  143. IOThreadMain()
  144. initThreadedIO()
  145. killIOThreads()
  146. startThreadedIO()
  147. stopThreadedIOIfNeeded()
  148. handleClientsWithPendingWritesUsingThreads()
  149. postponeClientRead()
  150. handleClientsWithPendingReadsUsingThreads()
  151. getClientEvictionLimit()
  152. evictClients()


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