nw_channelWriter
nw_channelWriterNew(
const char *serviceName,
const char *pathName,
nw_sendChannel sendChannel,
u_networkReader reader,
c_ulong stat_channel_id)
{
nw_channelWriter result = NULL;
c_ulong queueSize;
c_ulong priority;
c_bool reliable;
c_bool useAsDefault;
static c_bool defaultDefined = FALSE;
u_result ures;
c_ulong resolutionMsecs;
c_time resolution;
char *tmpPath;
size_t tmpPathSize;
char* name;
result = (nw_channelWriter)os_malloc((os_uint32)sizeof(*result));
if (result != NULL) {
/* Initialize parent */
/* First determine its parameter path */
tmpPathSize = strlen(pathName) + strlen(NWCF_SEP) +
strlen(NWCF_ROOT(Tx)) + strlen(NWCF_SEP) +
strlen(NWCF_ROOT(Scheduling)) + 1 /* '\0' */;
tmpPath = os_malloc(tmpPathSize);
os_sprintf(tmpPath, "%s%s%s%s%s", pathName, NWCF_SEP, NWCF_ROOT(Tx),
NWCF_SEP, NWCF_ROOT(Scheduling));
nw_channelUserInitialize((nw_channelUser)result,
pathName /* use pathName as name */, tmpPath, reader,
nw_channelWriterMainFunc, nw_channelWriterTrigger,
nw_channelWriterFinalize);
os_free(tmpPath);
/* Own initialization */
result->serviceName = os_strdup(serviceName);
/* Store the channel to write to */
result->sendChannel = sendChannel;
/* Create a new networking queue */
/* First read the corresponding options */
queueSize = NWCF_SIMPLE_SUBPARAM(ULong, pathName, Tx, QueueSize);
priority = NWCF_SIMPLE_ATTRIB(ULong, pathName, priority);
reliable = NWCF_SIMPLE_ATTRIB(Bool, pathName, reliable);
useAsDefault = NWCF_SIMPLE_ATTRIB(Bool, pathName, default);
name = NWCF_DEFAULTED_ATTRIB(String, pathName, ChannelName,"unnamed","unnamed");
if (useAsDefault) {
if (defaultDefined) {
NW_REPORT_WARNING_1(
"initializing network",
"default channel redefined by channel \"%s\"",
pathName);
useAsDefault = FALSE;
} else {
defaultDefined = TRUE;
}
}
result->scs = nw_SendChannelStatisticsNew();
result->stat_channel_id = stat_channel_id;
resolutionMsecs = NWCF_SIMPLE_PARAM(ULong, pathName, Resolution);
if (resolutionMsecs < NWCF_MIN(Resolution)) {
NW_REPORT_WARNING_3(
"initializing network",
"Requested value %d for resolution period for channel \"%s\" is "
"too small, using %d instead",
resolutionMsecs, pathName, NWCF_MIN(Resolution));
resolutionMsecs = NWCF_MIN(Resolution);
}
resolution.seconds = resolutionMsecs/1000;
resolution.nanoseconds = 1000000*(resolutionMsecs % 1000);
tmpPathSize = strlen(pathName) +
strlen(NWCF_SEP) +
strlen(NWCF_ROOT(Tx)) + 1;
tmpPath = os_malloc(tmpPathSize);
os_sprintf(tmpPath, "%s%s%s", pathName, NWCF_SEP, NWCF_ROOT(Tx));
result->reportInterval = NWCF_SIMPLE_PARAM(ULong, tmpPath, ReportInterval);
if (result->reportInterval < NWCF_MIN(ReportInterval)) {
NW_REPORT_WARNING_3(
"initializing network",
"Requested report interval value %d for channel \"%s\" is "
"too small, using %d instead",
result->reportInterval, pathName, NWCF_MIN(ReportInterval));
result->reportInterval = NWCF_MIN(ReportInterval);
}
os_free(tmpPath);
ures = u_networkReaderCreateQueue(reader,
queueSize,
priority,
reliable,
FALSE,
resolution,
useAsDefault,
&result->queueId,
name);
os_free(name);
if (ures != U_RESULT_OK) {
NW_REPORT_ERROR_1(
"initializing network",
"creation of network queue failed for channel \"%s\"",
pathName);
}
}
void
nw_plugChannelInitialize(
nw_plugChannel channel,
nw_seqNr seqNr,
nw_networkId nodeId,
nw_communicationKind communication,
nw_plugPartitions partitions,
nw_userData *userDataPtr,
const char *pathName,
nw_onFatalCallBack onFatal,
c_voidp onFatalUsrData)
{
nw_size fragmentLength;
nw_bool reliable;
nw_bool controlNeeded;
static sk_portNr sendingPortNr = NWCF_DEF(PortNr);
static sk_portNr receivingPortNr = NWCF_DEF(PortNr);
sk_portNr newPortNr;
nw_plugInterChannel *interChannelPtr = (nw_plugInterChannel *)userDataPtr;
char *defaultPartitionAddress;
/* Simple attributes */
channel->name = nw_stringDup(pathName);
channel->Id = seqNr;
channel->nodeId = nodeId;
channel->communication = communication;
channel->partitions = partitions;
/* Attributes to be read from config */
/* QoS-es*/
reliable = NWCF_SIMPLE_ATTRIB(Bool, pathName, reliable);
if (reliable) {
channel->reliabilityOffered = NW_REL_RELIABLE;
controlNeeded = TRUE;
/* Create object for inter-channel communication */
nw_plugInterChannelIncarnate(interChannelPtr, pathName);
channel->interChannelComm = *interChannelPtr;
} else {
channel->reliabilityOffered = NW_REL_BEST_EFFORT;
controlNeeded = FALSE;
/* NO object needed for inter-channel communication */
channel->interChannelComm = NULL;
}
/* Default, to be implemented */
channel->priorityOffered = NW_PRIORITY_UNDEFINED;
channel->latencyBudgetOffered = NW_LATENCYBUDGET_UNDEFINED;
/* Network fragment length */
fragmentLength = (nw_size)NWCF_SIMPLE_PARAM(Size, pathName, FragmentSize);
/* CHECKME, NWCF_MIN(FragmentSize) must be larger dealing with encryption */
if (fragmentLength < NWCF_MIN(FragmentSize)) {
NW_REPORT_WARNING_3("initializing network",
"Channel \"%s\": requested value %u for fragment size is too small, "
"using %u instead",
pathName, fragmentLength, NWCF_MIN(FragmentSize));
fragmentLength = NWCF_MIN(FragmentSize);
}
else if(fragmentLength > NWCF_MAX(FragmentSize)) {
NW_REPORT_WARNING_3("initializing network",
"Channel \"%s\": requested value " PA_SIZEFMT " for fragment size is too big, "
"using %u instead",
pathName, fragmentLength, NWCF_MAX(FragmentSize));
fragmentLength = NWCF_MAX(FragmentSize);
}
/* FIXME, this rounds up to multiple of 4, but it should round down to
* meet network constraints (??) */
/* round to lowest NW_FRAG_BOUNDARY multiplication higher than
* fragmentLength */
channel->fragmentLength =
NW_ALIGN(NW_PLUGDATABUFFER_ALIGNMENT, (nw_length)fragmentLength);
/* What is the base adress of the socket wee need ? */
nw_plugPartitionsGetDefaultPartition(partitions, &defaultPartitionAddress, NULL /* SecurityProfile not of interest */ );
switch (communication) {
case NW_COMM_SEND:
newPortNr = NWCF_DEFAULTED_PARAM(ULong, pathName, PortNr, sendingPortNr);
if (newPortNr == sendingPortNr) {
sendingPortNr+=2;
}
channel->socket = nw_socketSendNew(defaultPartitionAddress,
newPortNr, controlNeeded, pathName);
break;
case NW_COMM_RECEIVE:
newPortNr = NWCF_DEFAULTED_PARAM(
ULong, pathName, PortNr, receivingPortNr);
if (newPortNr == receivingPortNr) {
receivingPortNr+=2;
}
channel->socket = nw_socketReceiveNew(defaultPartitionAddress, newPortNr,
controlNeeded, pathName);
break;
default:
NW_CONFIDENCE(FALSE);
break;
}
channel->messageBox = nw_messageBoxNew();
channel->onFatal = onFatal;
channel->onFatalUsrData = onFatalUsrData;
channel->reconnectAllowed = NWCF_SIMPLE_ATTRIB(Bool,NWCF_ROOT(General) NWCF_SEP NWCF_NAME(Reconnection),allowed);
channel->crc = ut_crcNew(UT_CRC_KEY);
}