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/*
* Copyright (c) 2017 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <LongBow/runtime.h>
#include <parc/algol/parc_EventBuffer.h>
#include <ccnx/transport/common/transport_Message.h>
#include <ccnx/transport/transport_rta/rta_Transport.h>
#include <ccnx/transport/transport_rta/core/rta_ProtocolStack.h>
#include <ccnx/transport/transport_rta/core/rta_Connection.h>
#include <ccnx/transport/transport_rta/core/rta_Component.h>
#ifndef DEBUG_OUTPUT
#define DEBUG_OUTPUT 0
#endif
PARCEventQueue *
rtaComponent_GetOutputQueue(RtaConnection *conn,
RtaComponents component,
RtaDirection direction)
{
RtaProtocolStack *stack;
assertNotNull(conn, "called with null connection\n");
stack = rtaConnection_GetStack(conn);
assertNotNull(stack, "resolved null stack\n");
return rtaProtocolStack_GetPutQueue(stack, component, direction);
}
int
rtaComponent_PutMessage(PARCEventQueue *queue, TransportMessage *tm)
{
RtaConnection *conn = rtaConnection_GetFromTransport(tm);
assertNotNull(conn, "Got null connection from transport message\n");
if (rtaConnection_GetState(conn) != CONN_CLOSED) {
PARCEventBuffer *out = parcEventBuffer_GetQueueBufferOutput(queue);
int res;
rtaConnection_IncrementMessagesInQueue(conn);
if (DEBUG_OUTPUT) {
printf("%s queue %-12s tm %p\n",
__func__,
rtaProtocolStack_GetQueueName(rtaConnection_GetStack(conn), queue),
(void *) tm);
}
res = parcEventBuffer_Append(out, (void *) &tm, sizeof(&tm));
assertTrue(res == 0, "%s parcEventBuffer_Append returned error\n", __func__);
parcEventBuffer_Destroy(&out);
return 1;
} else {
// drop
transportMessage_Destroy(&tm);
return 0;
}
}
TransportMessage *
rtaComponent_GetMessage(PARCEventQueue *queue)
{
PARCEventBuffer *in = parcEventBuffer_GetQueueBufferInput(queue);
while (parcEventBuffer_GetLength(in) >= sizeof(TransportMessage *)) {
ssize_t len;
TransportMessage *tm;
RtaConnection *conn;
len = parcEventBuffer_Read(in, (void *) &tm, sizeof(&tm));
assertTrue(len == sizeof(TransportMessage *),
"parcEventBuffer_Read returned error");
// Is the transport message for an open connection?
conn = rtaConnection_GetFromTransport(tm);
assertNotNull(conn, "%s GetInfo returnd null connection\n", __func__);
if (DEBUG_OUTPUT) {
printf("%s queue %-12s tm %p\n",
__func__,
rtaProtocolStack_GetQueueName(rtaConnection_GetStack(conn), queue),
(void *) tm);
}
(void) rtaConnection_DecrementMessagesInQueue(conn);
if (rtaConnection_GetState(conn) != CONN_CLOSED) {
parcEventBuffer_Destroy(&in);
return tm;
}
// it's a closed connection
if (DEBUG_OUTPUT) {
printf("%s clearing connection %p reference in transport\n",
__func__, (void *) conn);
}
//drop
transportMessage_Destroy(&tm);
}
parcEventBuffer_Destroy(&in);
return NULL;
}
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