def pkt_retransmits(request, src_node, dst_node): #print 'Pkt retransmits' try: d = request.session.get(request.session.session_key) if d is None: raise Exception, INVALID_SESSION_MSG if NS_TRACEFILE_KEY in d: #print 'Trace file key found' if NS_TRACEFILE_MODE in d: #print 'Trace file format found (', d[NS_TRACEFILE_MODE], ')' # Create a TraceAnalyzer object ta = TraceAnalyzer(d[NS_TRACEFILE_KEY], d[NS_TRACEFILE_MODE]) retransmits = ta.get_packet_retransmissions(src_node, dst_node) label = 'Packet retransmission count between %s-%s' % (src_node, dst_node,) retransmits = { 'data': retransmits, 'label': label, } #print retransmits return HttpResponse(json.dumps(retransmits)) else: raise KeyError, 'Trace file mode not set!' else: raise KeyError, 'Wrong key!!!' except KeyError, ke: #print str(ke) mesg = str(ke) error = {'error' : mesg} return HttpResponse(json.dumps(error))
def analyze_trace_file(trace_file_name, session_key, timestamp, metrics): metrics_dir_path = '/'.join( [globals.NS2_SCRIPT_STORAGE_PATH, 'batch', session_key, timestamp, 'metrics',] ) try: os.makedirs( metrics_dir_path ) #print 'Created dir', metrics_dir_path try: tr_file = open(trace_file_name, 'r') #print 'Analyzing trace file', trace_file_name metrics = json.loads( metrics ) #print metrics for a_metric in metrics: a_metric = json.loads( a_metric ) if a_metric['name'] == "bytes-rcvd": # Sample: {"name":"bytes-rcvd","parameters":[66,"MAC|RTR|"],"mode":"Wired"} ta = TraceAnalyzer( trace_file_name, a_metric['mode'] ) layers = a_metric['parameters'][1].strip() if len(layers) > 0: layers = [ l.strip() for l in a_metric['parameters'][1].split('|') if l.strip() != '' ] else: layers = None #print layers bytes_rcvd = ta.get_cumulative_bytes_received_for_node_at_layers(a_metric['parameters'][0], layers) #print 'bytes_rcvd', len(bytes_rcvd) xvals = [] yvals = [] for entry in bytes_rcvd: xvals.append(entry[0]) yvals.append(entry[1]) image_file_name = '-'.join( [ 'bytes_rcvd', str(a_metric['parameters'][0]), a_metric['parameters'][1].replace('|', '_') ] ) image_file_name += '.png' image_title = 'Bytes received by node %d (%s)' % ( a_metric['parameters'][0], a_metric['parameters'][1], ) plot_graph(xvals, yvals, 'Time (in seconds)', 'Kbits received', image_title, metrics_dir_path+'/'+image_file_name) elif a_metric['name'] == "e2e-delay": # Sample: {"name":"e2e-delay","parameters":[66,67,1],"mode":"Wired"} ta = TraceAnalyzer( trace_file_name, a_metric['mode'] ) delay = ta.get_end2end_delay( a_metric['parameters'][0], a_metric['parameters'][1] ) xvals = [] yvals = [] for entry in delay: xvals.append(entry[0]) yvals.append(entry[1]) image_file_name = '-'.join( [ 'e2e_delay', str(a_metric['parameters'][0]), str(a_metric['parameters'][1]), str(a_metric['parameters'][2]) ] ) image_file_name += '.png' image_title = 'End-to-end delay between nodes %d and %d (scaling = %d)' % (a_metric['parameters'][0], a_metric['parameters'][1], a_metric['parameters'][2]) plot_graph(xvals, yvals, 'Packet sequence #', 'Delay', image_title, metrics_dir_path+'/'+image_file_name) elif a_metric['name'] == "pkt-retransmission": # Sample: {"name":"pkt-retransmission","parameters":[66,67],"mode":"Wired"} ta = TraceAnalyzer( trace_file_name, a_metric['mode'] ) count = ta.get_packet_retransmissions( a_metric['parameters'][0], a_metric['parameters'][1] ) xvals = [] yvals = [] for entry in count: xvals.append(entry[0]) yvals.append(entry[1]) image_file_name = '-'.join( [ 'pkt-retransmission', str(a_metric['parameters'][0]), str(a_metric['parameters'][1]), ] ) image_file_name += '.png' image_title = 'Packet retransmissions between nodes %d and %d' % ( a_metric['parameters'][0], a_metric['parameters'][1], ) plot_graph(xvals, yvals, 'Packet sequence #', 'Retransmission count', image_title, metrics_dir_path+'/'+image_file_name) elif a_metric['name'] == "hop-count": # Sample: {"name":"hop-count","parameters":[66,0,67,0],"mode":"Wired"} ta = TraceAnalyzer( trace_file_name, a_metric['mode'] ) count = ta.get_hop_count_pkt_seq_num( a_metric['parameters'][0], a_metric['parameters'][1], a_metric['parameters'][2], a_metric['parameters'][3] ) xvals = [] yvals = [] for entry in count: xvals.append(entry[0]) yvals.append(entry[1]) image_file_name = '-'.join( [ 'pkt-retransmission', str(a_metric['parameters'][0]), str(a_metric['parameters'][1]), ] ) image_file_name += '.png' image_title = 'Hop count between nodes %d:%d and %d:%d' % ( a_metric['parameters'][0], a_metric['parameters'][1], a_metric['parameters'][2], a_metric['parameters'][2], ) plot_graph(xvals, yvals, 'Packet sequence #', 'Hop count', image_title, metrics_dir_path+'/'+image_file_name) except IOError, ioe: output['error'] = str(ioe) finally: if tr_file: tr_file.close()