arch_redis.py

import urllib
# read in redis configuration file to parse ip addresses and ports
def readIn(confFile):
    slotsPortArray = []
    portRegex = re.compile("(?<=:)[0-9]*")          # regex to match port in file
    slotsRegex = re.compile("[0-9]+-[0-9]+")        # regex to match hash-slot in file
    addr = getIp()  # ip address of machine
    for line in confFile:
        portMatch = re.search(portRegex, line)      # match port to find dump file
        slotsMatch = re.search(slotsRegex, line)    # match hash-slots, only masters have hash-slots declared in conf file
        if portMatch and slotsMatch:                # if we detect ports and ip addresses in the
            if addr in line:                        # if we find the ip address of the machine we provided
                print('Found:',addr, portMatch.group(), slotsMatch.group())
                slotsPortArray.append({'HashSlot': slotsMatch.group(), 'Port': portMatch.group() })  # create an array of dicts that have hash slot and port  
    return slotsPortArray
def getIp():
    request = urllib.request.urlopen('http://111.111.111.254/latest/meta-data/local-ipv4' )
    machineIp = request.read().decode('utf-8')
    return machineIp
def example()
    with open('nodes_6379.conf', 'r') as file:
        params = readIn(file)
        # now do things with params according to spec; Eg. upload to s3