added asynchronous handling of libvirt
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db5b2e96c1
commit
656071fa6e
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@ -33,9 +33,10 @@ class RPCClient():
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pass
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if __name__ == "__main__":
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import random
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client= RPCClient()
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print("Creating VM...")
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name= "CentOS-8-Demo"
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name= "CentOS-8-Demo-{}-{}".format(random.sample("abcdefghijklmn", 1)[0], random.sample(range(10),1)[0])
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iso_src= "/home/coolguy/Downloads/CentOS-8.2.2004-x86_64-boot.iso"
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img_src= "/var/lib/libvirt/images/vol.img"
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101
virtpool.py
101
virtpool.py
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@ -7,6 +7,9 @@ import sys
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import cherrypy
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import libvirt
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import json
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import threading
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from multiprocessing.pool import ThreadPool
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pool = ThreadPool(processes=1)
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import uuid
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from jinja2 import Environment, FileSystemLoader
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@ -17,6 +20,8 @@ TEMPLATE_ENVIRONMENT = Environment(
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loader=FileSystemLoader(os.path.join(PATH, 'templates')),
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trim_blocks=False)
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#TEMPLATE_ENVIRONMENT.globals['STATIC_PREFIX'] = '/templates/'
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def render_template(template_filename, context):
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return TEMPLATE_ENVIRONMENT.get_template(template_filename).render(context)
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@ -111,13 +116,89 @@ class Client():
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host= self.connections[self.uris[0]]
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if host:
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try:
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vm= host.createXML(xml)
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return json.dumps({"uuid":vm.UUIDString(), "id":vm.ID(), "status":1})
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except Exception as e:
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return json.dumps({"err":str(e), "status":0})
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async_result = pool.apply_async(self.__create_vm, (host, xml))
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return async_result.get()
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return "No host available"
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def __create_vm(self, host, xml):
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try:
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vm= host.createXML(xml)
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return json.dumps({"uuid":vm.UUIDString(), "id":vm.ID(), "status":1})
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except Exception as e:
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return json.dumps({"err":str(e), "status":0})
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@cherrypy.expose
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def gethost(self):
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"""
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It'll show relevant info about all available hosts
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"""
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host_data= []
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for i, each in enumerate(self.uris):
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tmp= {}
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c= self.connections[each]
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nodeinfo = c.getInfo()
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mem = nodeinfo[1]
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cpus = nodeinfo[2]
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usedmem = 0
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usedcpus = 0
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tmp["sn"]= i+1
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tmp["hostname"]= c.getHostname()
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tmp["status"]= "Alive" if c.isAlive() else "Dead"
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tmp["uri"]= c.getURI()
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tmp["cpu"]= {}
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tmp["mem"]= {}
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domain_ids = c.listDomainsID()
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for did in domain_ids:
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dom = c.lookupByID(did)
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state, maxmem, mem2, cpus2, cput = dom.info()
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usedmem += maxmem/1024
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usedcpus += cpus2
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tmp["cpu"]["total"]= cpus
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tmp["cpu"]["free"]= cpus - usedcpus
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tmp["mem"]["total"]= mem
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tmp["mem"]["free"]= int(mem - usedmem)
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host_data.append(tmp)
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return render_template("host.html", {"host_data": host_data})
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@cherrypy.expose
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def getguest(self):
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"""
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It'll show host-wise available guests and detailed info about them
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"""
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guest_data= []
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cnt=0
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for i, each in enumerate(self.uris):
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c= self.connections[each]
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for did in c.listDomainsID():
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dom= c.lookupByID(did)
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tmp= {
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"sn": cnt+1,
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"guestname": dom.name(),
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"hostname": c.getHostname(),
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"id_": dom.ID(),
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"mem": int(dom.info()[1]/1024),
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"cpu": dom.info()[3],
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"status": "Active" if dom.isActive() else "Inactive",
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"uuid": dom.UUIDString()
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}
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guest_data.append(tmp)
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cnt+=1
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return render_template("guest.html", {"guest_data": guest_data})
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def manage_host(self,host_id):
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pass
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ROOT = Client()
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CONF = os.path.join(os.path.dirname(__file__), 'site.conf')
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@ -130,7 +211,15 @@ if __name__ == '__main__':
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# cherrypy.process.plugins.Daemonizer(engine).subscribe()
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# cherrypy.process.plugins.DropPrivileges(
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# ENGINE, uid='cherrypy', gid='cherrypy').subscribe()
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cherrypy.tree.mount(Client())
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cherrypy.tree.mount(Client(),
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'/',
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config={
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'/':{
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'tools.staticdir.on': True,
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'tools.staticdir.dir': PATH+"/templates"
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}
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}
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)
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if hasattr(ENGINE, "signal_handler"):
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ENGINE.signal_handler.subscribe()
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if hasattr(ENGINE, "console_control_handler"):
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