import os
os.system("docker logs flydog-sdr > /home/flydog/logs/logs.txt")
file_output = open(r"/home/flydog/logs/out.txt", "r")                     
file_input  =  open(r"/home/flydog/logs/logs.txt", "r")                   

while(True):
        last_line = file_output.readline()
        if not last_line:
                break
        last = last_line

file_output.close()
found = 0
while(True):
        line = file_input.readline()
        if line == last:
                found = 1
                break
        else:
                found = 0               
        if not line:
                break


if found == 0:
    file_input.close()
    file_input  =  open(r"/home/flydog/logs/logs.txt", "r")

file_output = open(r"/home/flydog/logs/out.txt", "a")                     

    


while(True):
        
        lines = file_input.readline()                           
        if not lines:                                           
                break                                           
        index_A = lines.find("ARRIVED")                         
        index_B = lines.find("LEAVING")                         
        index_C = lines.find("Alert_")
	index_SNR = lines.find("SNR-measure")
        if index_SNR >= 0:
                index_A = -1
                index_B = -1
		index_C = -1
        if index_A >= 0:
                file_output.write(lines)
        if index_B >= 0:
                file_output.write(lines)	
	if index_C >= 0:
		file_output.write(lines)

file_output.close()
file_input.close()
os.remove('/home/flydog/logs/logs.txt')