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bootstrap.py
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bootstrap.py
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import xml.etree.ElementTree as ET
import os
import json
# write hosts credentials to the registry
# write pid of each module to the registry -- ModulesInfo is the list to be send to registry
class Bootstrap:
def __init__(self, PlatformConfig):
# PlatformConfig is the path to the platform configuration file
tree = ET.parse(PlatformConfig)
self.root = tree.getroot()
#create a dictionary to store IP, port where each module will run
self.moduleData = {}
# create a dictionary to store username password of each host machine in the platform
self.platformHostCredentials = {}
self.NFSServerIP = "192.168.42.210"
self.RabbitMQIP = "192.168.42.210"
self.RabbitMQPort = 5672
self.RMQCredentials = {}
self.NFSpid = 0
self.RMQInput = ""
self.NFSMounted = []
self.ModulesInfo = []
self.PIDFile = {"DeploymentManager":"DMPID.txt",
"ServiceManager" : "SMPID.txt",
"HostManager" : "HMPID.txt",
"LoadBalancer" : "LBPID.txt",
"Scheduler" : "schedulerPID.txt",
"Logger" : "loggerPID.txt",
"Monitor" : "monitorPID.txt",
"RecoveryManager" : "recoveryManagerPID.txt",
"PlatformUI" : "platformUIPID.txt",
"Registry" : "regsitryPID.txt",
"Repository" : "repoPID.txt",
"RabbitMQServer" : "RMQPID.txt"
}
def parsePlatformConfig(self):
for children in self.root.iter('platformModules'):
for child in children:
attribDictionary = child.attrib
moduleName = attribDictionary['name']
self.moduleData[moduleName] = {}
for elements in child:
self.moduleData[moduleName][elements.tag] = elements.text
for children in self.root.iter('Hosts'):
for child in children:
attribDictionary = child.attrib
hostIP = attribDictionary['IP']
self.platformHostCredentials[hostIP] = {}
for elements in child:
self.platformHostCredentials[hostIP][elements.tag] = elements.text
def getVariables(self, moduleName):
IP = self.moduleData[moduleName]['IP']
Port = self.moduleData[moduleName]['Port']
username = self.platformHostCredentials[IP]['username']
password = self.platformHostCredentials[IP]['password']
setupFileName = self.moduleData[moduleName]['executableFile'].strip()
setupFilePath = (self.moduleData[moduleName]['folderName'] + '/' + setupFileName).strip()
setupFilePath = setupFilePath.replace(" ", "\ ")
return IP, Port, username, password, setupFileName, setupFilePath
def createPath(self, username, password, IP):
# will create path like /home/harshita/Platform on the given IP
path = '/home/'+username+'/Platform/'
cmd = "sshpass -p "+password+" ssh -o StrictHostKeyChecking=no -t "+username+"@"+IP+" \'mkdir -p "+path+"\'"
print(cmd)
os.system(cmd)
return path
def getFolderPath(self, mountPath, setupFilePath):
# return folderPath like /home/harshita/Platform/Service_Manager/
# mountPath = /home/harshita/Platform/
#setupFilePath = ./setupFile.sh or ./ServiceManager/startupFile.sh
setupFilePath = mountPath + setupFilePath
temp = setupFilePath.rfind('/')
folderPath = setupFilePath[:temp]
return folderPath+'/'
def mountNFS(self, moduleName):
# mount the repository on the host machine /home/harshita/Platform
IP, Port, username, password, setupFileName, setupFilePath = self.getVariables(moduleName)
if IP in self.NFSMounted:
return '/home/'+username+'/Platform/'
cmd = "sshpass -p "+password+" ssh -o StrictHostKeyChecking=no -t "+username+"@"+IP+" \'echo "+password+" | sudo -S apt-get install nfs-common\'"
print(cmd)
os.system(cmd)
mountFolder = setupFilePath.split('/')[0]
mountPath = '/home/'+username+'/Platform/'
cmd = "sshpass -p "+password+" ssh -o StrictHostKeyChecking=no -t "+username+"@"+IP+" \'echo "+password+" | sudo -S mount "+self.NFSServerIP+":/mnt/Repository/"+" "+mountPath+"\'"
print(cmd)
os.system(cmd)
self.NFSMounted.append(IP)
return mountPath
def storeModuleInfo(self, IP, port, username, password, filepath, moduleName):
cmd = "sshpass -p "+password+" scp "+filepath+" ./"
print(cmd)
os.system(cmd)
temp = {}
temp["ModuleName"] = moduleName
temp["IP"] = IP
ind = filepath.rfind('/')
filename = filepath[ind+1:]
with open(filename) as f:
pid = f.read()
temp["PID"] = pid
self.ModulesInfo.append(temp)
print(moduleName,"setup finished on",IP,"pid is:", pid)
def startModule(self, moduleName, pidFileName):
IP, Port, username, password, setupFileName, setupFilePath = self.getVariables(moduleName)
path = self.createPath(username, password, IP)
path = self.mountNFS(moduleName)
folderPath = self.getFolderPath(path, setupFilePath)
cmd = "sshpass -p "+password+" ssh -o StrictHostKeyChecking=no -t "+username+"@"+IP+" \' bash "+folderPath+setupFileName+" "+folderPath+"\'"
print(cmd)
os.system(cmd)
PIDFileName = self.PIDFile[moduleName]
cmd = "nohup python3 "+folderPath+setupFilePath+" 2>&1 & echo $! > "+folderPath+PIDFileName
self.storeModuleInfo(IP, Port, username, password, folderPath+pidFileName, moduleName)
print(moduleName,'started on IP', IP)
def initDeploymentManager(self):
self.startModule('DeploymentManager', "DMPID.txt")
def initServiceManager(self):
self.startModule('ServiceManager', "SMPID.txt")
def initHostManager(self):
self.startModule("HostManager", "HMPID.txt")
def initLoadBalancer():
pass
def initScheduler(self):
self.startModule("Scheduler", "schedulerPID.txt")
def initLogger():
pass
def initMonitor(self):
self.startModule("Monitor", "monitorPID.txt")
def initRecoveryManager():
pass
def initDatabase():
pass
def initPlatformUI():
pass
def initRegistry(self):
self.startModule("Registry", "regsitryPID.txt")
def initNFS(self):
IP, Port, username, password, setupFileName, setupFilePath = self.getVariables('Repository')
temp = IP.split('.')
network = temp[0]+'.'+temp[1]+'.'+temp[2]+'.'+'0'
cmd = "sshpass -p "+password+" ssh -o StrictHostKeyChecking=no -t "+username+"@"+IP+" \'bash /mnt/Repository/"+setupFileName+" "+username+" "+password+" "+network+"\'"
print(cmd)
os.system(cmd)
self.storeModuleInfo(IP, Port, username, password, "/mnt/Repository/repoPID.txt", "Repository")
self.NFSServerIP = IP
def initRabbitMQServer(self):
IP, Port, username, password, setupFileName, setupFilePath = self.getVariables('RabbitMQServer')
path = self.createPath(username, password, IP)
path = self.mountNFS("RabbitMQServer")
cmd = "sshpass -p "+password+" scp "+setupFilePath+" "+username+"@"+IP+":"+path
print(cmd)
os.system(cmd)
cmd = "sshpass -p "+password+" ssh -o StrictHostKeyChecking=no -t "+username+"@"+IP+" \'bash /home/"+username+"/Platform/"+setupFileName+" "+username+" "+password+"\'"
print(cmd)
os.system(cmd)
print("RabbitMQ Server started on IP: ",IP)
RMQdic = {"IP" : IP, "Port" : Port, "username" : "harshita", "password" : "123"}
filename = '/home/'+username+'/Platform/RMQCredentials.txt'
with open(filename, 'w') as f:
json.dump(RMQdic, f)
path = self.getFolderPath(path, setupFilePath)
self.storeModuleInfo(IP, Port, username, password, path+"RMQPID.txt", "RabbitMQServer")
self.RabbitMQIP = IP
self.RMQCredentials['username'] = 'harshita'
self.RMQCredentials['password'] = '123'
self.RMQInput = IP+" "+Port+" "+"harshita"+" 123"
if __name__ == '__main__':
boot = Bootstrap('platformConfig.xml')
boot.parsePlatformConfig()
boot.initNFS()
boot.initRegistry()
boot.initRabbitMQServer()
boot.initServiceManager()
boot.initDeploymentManager()
boot.initHostManager()
boot.initMonitor()
boot.initScheduler()
print(boot.ModulesInfo)
# nohup python3 $filename'scheduler.py' 2>&1 & echo $! > $filename'schedulerPID.txt'