--- /dev/null
+/*******************************************************************************
+################################################################################
+# Copyright (c) [2020] [HCL Technologies Ltd.] #
+# #
+# 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. #
+################################################################################
+*******************************************************************************/
+
+/* This file contains TcpServer class that listens for Netconf Alarm messages
+ on a TCP socket from ODU. It calls the AlarmManager functions for raising
+ or clearing the alarms based on the actions received
+*/
+
+#include "TcpServer.hpp"
+#include "Alarm.hpp"
+#include "AlarmManager.hpp"
+#include "GlobalDefs.hpp"
+#include <iostream>
+#include <cstdio>
+#include <cerrno>
+#include <cstdlib>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netdb.h>
+#include <arpa/inet.h>
+
+using std::map;
+using std::pair;
+
+/* Destructor */
+TcpServer::~TcpServer()
+{
+
+}
+
+
+/**********************************************************************
+ Description : Read the data from the connected client application
+ Params[In] : fd - File descriptor
+ Return : int - No of bytes read
+**********************************************************************/
+int TcpServer::readMessage(int fd)
+{
+ AlarmRecord alrmRec;
+ bzero(&alrmRec,sizeof(alrmRec));
+ int nbytes = read (fd, &alrmRec, sizeof(alrmRec));
+ if (nbytes > 0)
+ {
+ Alarm alrm;
+ uint16_t alrmId;
+ O1_LOG("\nO1 TcpServer :\nAction %d\nalarm ID %s\n%d\n%s\n%d\n%s\n%s\nbytes %d",
+ alrmRec.msgHeader.action,
+ alrmRec.alarmId,
+ alrmRec.perceivedSeverity,
+ alrmRec.additionalText,
+ alrmRec.eventType,
+ alrmRec.specificProblem,
+ alrmRec.additionalInfo,
+ nbytes
+ );
+
+ /*Fill the alarm structure */
+ sscanf(alrmRec.alarmId,"%hu",&alrmId);
+ alrm.setAlarmId(alrmId);
+ alrm.setPerceivedSeverity(alrmRec.perceivedSeverity);
+ alrm.setAdditionalText(alrmRec.additionalText);
+ alrm.setEventType(alrmRec.eventType);
+ alrm.setSpecificProblem(alrmRec.specificProblem);
+ alrm.setAdditionalInfo(alrmRec.additionalInfo);
+
+ switch(alrmRec.msgHeader.action)
+ {
+ case RAISE:
+ if(AlarmManager::instance().raiseAlarm(alrm))
+ {
+ O1_LOG("\nO1 TcpServer : Alarm raised for alarm Id %s", alrmRec.alarmId);
+ }
+ else
+ {
+ O1_LOG("\nO1 TcpServer : Error in raising alarm for alrm Id %s", alrmRec.alarmId);
+ }
+ break;
+ case CLEAR:
+ if(AlarmManager::instance().clearAlarm(alrm))
+ {
+ O1_LOG("\nO1 TcpServer : Alarm cleared for alarm Id %s", alrmRec.alarmId);
+ }
+ else
+ {
+ O1_LOG("\nO1 TcpServer : Error in clearing alarm for alarm Id %s", alrmRec.alarmId);
+ }
+ break;
+ default:
+ O1_LOG("\nO1 TcpServer : No action performed");
+ break;
+ }
+
+ }
+ return nbytes;
+}
+
+
+/**********************************************************************
+ Description : Open a TCP socket and bind on the port
+ Params[In] : None
+ Return : O1::SUCCESS - socket open and bind successful
+ O1::FAILURE - socket open and bind failed
+**********************************************************************/
+int TcpServer::makeSocket()
+{
+ struct sockaddr_in name;
+ /* Create the socket. */
+ mSock = socket (PF_INET, SOCK_STREAM, 0);
+ if (mSock < 0)
+ {
+ O1_LOG("\nO1 TcpServer : Socket error");
+ return O1::FAILURE;
+ }
+ /* Give the socket a name. */
+ bzero(&name, sizeof(name));
+ name.sin_family = AF_INET;
+ name.sin_port = htons (mPort);
+ name.sin_addr.s_addr = htonl (INADDR_ANY);
+ if (bind (mSock, (struct sockaddr *) &name, sizeof (name)) < 0)
+ {
+ close(mSock);
+ O1_LOG("\nO1 TcpServer : Bind error");
+ return O1::FAILURE;
+ }
+ return O1::SUCCESS;
+}
+
+
+/**********************************************************************
+ Description : Start TCP server in thread
+ Params[In] : None
+ Return : true - task launched in pthread successfully
+ false - task failed to launch
+**********************************************************************/
+bool TcpServer::start()
+{
+ return (pthread_create(&mThreadId, NULL, task, this) == 0);
+}
+
+/**********************************************************************
+ Description : A TCP server to handle multiple connection using
+ select multiplexing
+ Params[In] : None
+ Return : true - task launched in pthread successfully
+ false - task failed to launch
+**********************************************************************/
+bool TcpServer::run()
+{
+
+ fd_set active_fd_set, read_fd_set;
+ int i;
+ struct sockaddr_in clientName;
+ socklen_t size;
+ bool ret = true;;
+
+ /* Create the socket and set it up to accept connections. */
+ if( makeSocket() == O1::SUCCESS )
+ {
+ if (listen (mSock, 1) < 0)
+ {
+ O1_LOG("\nO1 TcpServer : Listen error");
+ close(mSock);
+ ret = false;
+ }
+ else
+ {
+ /* Initialize the set of active sockets. */
+ FD_ZERO (&active_fd_set);
+ FD_SET (mSock, &active_fd_set);
+
+ while (1)
+ {
+ /* Block until input arrives on one or more active sockets. */
+ read_fd_set = active_fd_set;
+ if (select (FD_SETSIZE, &read_fd_set, NULL, NULL, NULL) < 0)
+ {
+ O1_LOG("\nO1 TcpServer : Select error");
+ close(mSock);
+ ret = false;
+ break;
+ }
+
+ /* Service all the sockets with input pending. */
+ for (i = 0; i < FD_SETSIZE; ++i)
+ {
+ if (FD_ISSET (i, &read_fd_set))
+ {
+ if (i == mSock)
+ {
+ /* Connection request on original socket. */
+ int newFd;
+ bzero(&clientName, sizeof(clientName));
+ size = sizeof (clientName);
+ newFd = accept(mSock,(struct sockaddr *) &clientName,&size);
+ if (newFd < 0)
+ {
+ O1_LOG("\nO1 TcpServer : Accept error");
+ close(mSock);
+ ret = false;
+ break;
+ }
+ O1_LOG("\nO1 TcpServer : Connected from host %s, port %hd.\n",
+ inet_ntoa (clientName.sin_addr),
+ ntohs (clientName.sin_port));
+ FD_SET (newFd, &active_fd_set);
+ }
+ else
+ {
+ /* Data arriving on an already-connected socket. */
+ if (readMessage(i) < 0)
+ {
+ close (i);
+ FD_CLR (i, &active_fd_set);
+ }
+ }
+ }
+ }/* for loop ends */
+ } /* while(1) ends */
+ } /* else ends */
+ } /* outer if ends */
+ else
+ {
+ ret = false;
+ }
+ return ret;
+}
+
+
+/**********************************************************************
+ Description : Static function for launching a TCP server instance
+ in a thread
+ Params[In] : TcpServer instance
+ Return : NULL
+**********************************************************************/
+void* TcpServer::task(void *args)
+{
+ TcpServer *tcpServer = (TcpServer*)args;
+ tcpServer->run();
+ return NULL;
+}
+
+
+/**********************************************************************
+ Description : Wait for the thread to complete in the parent process
+ Params[In] : None
+ Return : true - pthread join success
+ false - pthread join failed
+**********************************************************************/
+bool TcpServer::wait()
+{
+ return (pthread_join(mThreadId,NULL) == 0);
+}
+
+
+
+/**********************************************************************
+ End of file
+**********************************************************************/
Code Review / o-du / l2.git / blobdiff