void buildMessageToCommBuffer(AsyncCommBuffer buffer,
const char *content,
int contentsize,
uint16_t messageid,
uint8_t mark1,
uint8_t mark2)
{
static char messagehead[DRM_MSGFRAME_HEADSIZE] = DRM_MSGFRAME_HEADTAG_STR;
static char messagetail[DRM_MSGFRAME_TAILSIZE+1] = DRM_MSGFRAME_TAILTAG_STR;
RMMessageHead phead = (RMMessageHead)messagehead;
RMMessageTail ptail = (RMMessageTail)messagetail;
/* Append message head. */
phead->Mark1 = mark1;
phead->Mark2 = mark2;
phead->MessageID = messageid;
phead->MessageSize = contentsize;
SelfMaintainBuffer newbuff = createSelfMaintainBuffer(AsyncCommContext);
appendSelfMaintainBuffer(newbuff, (char *)phead, sizeof(*phead));
/* Append actual message content. */
appendSelfMaintainBuffer(newbuff, (char *)content, contentsize);
/* Append message tail. */
appendSelfMaintainBuffer(newbuff, (char *)ptail, sizeof(*ptail));
addMessageContentToCommBuffer(buffer, newbuff);
}
void SimpleStringReplaceFirst(SimpStringPtr str, char *oldstr, char *newstr)
{
char *pos = strstr(str->Str, oldstr);
/* If the old string does not exist, no need to do any update. */
if ( pos == NULL )
return;
SelfMaintainBufferData smb;
initializeSelfMaintainBuffer(&smb, str->Context);
if ( str->Str != pos ) {
appendSelfMaintainBuffer(&smb, str->Str, pos - str->Str);
}
int oldstrlen = strlen(oldstr);
appendSelfMaintainBuffer(&smb, newstr, strlen(newstr));
if ( oldstrlen + (pos - str->Str) < str->Len ) {
appendSMBStr(&smb, pos + oldstrlen);
}
setSimpleStringWithContent(str, smb.Buffer, getSMBContentSize(&smb));
destroySelfMaintainBuffer(&smb);
}
void receivedSyncRPCResponse(AsyncCommMessageHandlerContext context,
uint16_t messageid,
uint8_t mark1,
uint8_t mark2,
char *buffer,
uint32_t buffersize)
{
SyncRPCContext userdata = (SyncRPCContext)(context->UserData);
Assert(userdata != NULL);
userdata->CommStatus = SYNC_RPC_COMM_IDLE;
if ( userdata->ExpMessageID == messageid ) {
resetSelfMaintainBuffer(userdata->RecvBuffer);
appendSelfMaintainBuffer(userdata->RecvBuffer, buffer, buffersize);
userdata->RecvMark1 = mark1;
userdata->RecvMark2 = mark2;
userdata->Result = FUNC_RETURN_OK;
}
else {
userdata->Result = REQUESTHANDLER_WRONGMESSAGE;
}
}
/******************************************************************************
* I aM Alive.
*
* Request:
* |<----------- 64 bits (8 bytes) ----------->|
* +----------+--------------------------------+
* | TDC | BDC | Reserved |
* +----------+----------+---------------------+
* | |
* | Machine ID info |
* | |
* +-------------------------------------------+ _____ 64bit aligned
*
* Response:
* |<----------- 64 bits (8 bytes) ----------->|
* +---------------------+---------------------+
* | heartbeat result | Reserved |
* +---------------------+---------------------+ _____ 64bit aligned
*
******************************************************************************/
int sendIMAlive(int *errorcode,
char *errorbuf,
int errorbufsize)
{
int res = FUNC_RETURN_OK;
AsyncCommBuffer newcommbuffer = NULL;
Assert( DRMGlobalInstance->LocalHostStat != NULL );
/* Build request. */
SelfMaintainBufferData tosend;
initializeSelfMaintainBuffer(&tosend, PCONTEXT);
RPCRequestHeadIMAliveData requesthead;
requesthead.TmpDirCount = getDQueueLength(&DRMGlobalInstance->LocalHostTempDirectories);
requesthead.TmpDirBrokenCount = DRMGlobalInstance->LocalHostStat->FailedTmpDirNum;
requesthead.Reserved = 0;
appendSMBVar(&tosend, requesthead);
appendSelfMaintainBuffer(&tosend,
(char *)(DRMGlobalInstance->LocalHostStat),
offsetof(SegStatData, Info) +
DRMGlobalInstance->LocalHostStat->Info.Size);
/* Set content to send and add to AsyncComm framework. */
AsyncCommMessageHandlerContext context =
rm_palloc0(AsyncCommContext,
sizeof(AsyncCommMessageHandlerContextData));
context->inMessage = false;
context->UserData = NULL;
context->MessageRecvReadyHandler = NULL;
context->MessageRecvedHandler = receivedIMAliveResponse;
context->MessageSendReadyHandler = NULL;
context->MessageSentHandler = sentIMAlive;
context->MessageErrorHandler = sentIMAliveError;
context->MessageCleanUpHandler = sentIMAliveCleanUp;
/* Connect to HAWQ RM server */
res = registerAsyncConnectionFileDesc(NULL,
DRMGlobalInstance->SendToStandby?
standby_addr_host:
master_addr_host,
rm_master_port,
ASYNCCOMM_READBYTES | ASYNCCOMM_WRITEBYTES,
&AsyncCommBufferHandlersMessage,
context,
&newcommbuffer);
if ( res != FUNC_RETURN_OK )
{
rm_pfree(AsyncCommContext, context);
elog(WARNING, "Fail to register asynchronous connection for sending "
"IMAlive message. %d", res);
return res;
}
buildMessageToCommBuffer(newcommbuffer,
tosend.Buffer,
tosend.Cursor + 1,
REQUEST_RM_IMALIVE,
0,
0);
destroySelfMaintainBuffer(&tosend);
context->AsyncBuffer = newcommbuffer;
InitHandler_Message(newcommbuffer);
return FUNC_RETURN_OK;
}