| import socket |
| import requests |
| import urllib2 |
| import json |
| import msgpack |
| import collections |
| import time, thread, threading |
| |
| from flask import request, Request, jsonify |
| from flask import Flask |
| from flask import make_response |
| app = Flask(__name__) |
| |
| projects_map = {} |
| xos_tenant_info_map = {} |
| xos_instances_info_map = {} |
| |
| UDP_IP = "0.0.0.0" |
| UDP_PORT = 12346 |
| |
| @app.route('/autoscaledata',methods=['GET']) |
| def autoscaledata(): |
| response = app.make_response(json.dumps(projects_map)) |
| response.mimetype="application/json" |
| return response |
| |
| def acquire_xos_monitoring_channel(): |
| url = "http://ctl:9999/xoslib/monitoringchannel/" |
| admin_auth=("padmin@vicci.org", "letmein") # use your XOS username and password |
| monitoring_channels = requests.get(url, auth=admin_auth).json() |
| ceilometer_url = None |
| if not monitoring_channels: |
| print 'SRIKANTH: No monitoring channels for this user...' |
| return None |
| else: |
| monitoring_channel = monitoring_channels[0] |
| while not monitoring_channel['ceilometer_url']: |
| print 'SRIKANTH: Waiting for monitoring channel create' |
| sleep(0.5) |
| monitoring_channel = requests.get(url, auth=admin_auth).json()[0] |
| #TODO: Wait until URL is completely UP |
| while True: |
| print 'SRIKANTH: Waiting for ceilometer proxy URL %s is available' % monitoring_channel['ceilometer_url'] |
| try: |
| response = urllib2.urlopen(monitoring_channel['ceilometer_url'],timeout=1) |
| break |
| except urllib2.HTTPError, e: |
| print 'SRIKANTH: HTTP error %s' % e.reason |
| break |
| except urllib2.URLError, e: |
| print 'SRIKANTH: URL error %(reason)s' % e.reason |
| pass |
| return monitoring_channel |
| |
| def print_samples(): |
| print "" |
| print "" |
| for project in projects_map.keys(): |
| print "service=%s slice=%s, alarm_state=%s" % (projects_map[project]['xos_tenant_info']['service'] if projects_map[project]['xos_tenant_info'] else None, projects_map[project]['xos_tenant_info']['slice'] if projects_map[project]['xos_tenant_info'] else project, projects_map[project]['alarm']) |
| for resource in projects_map[project]['resources'].keys(): |
| print "resource=%s" % (projects_map[project]['resources'][resource]['xos_instance_info']['instance_name'] if projects_map[project]['resources'][resource]['xos_instance_info'] else resource) |
| for i in projects_map[project]['resources'][resource]['queue']: |
| print " time=%s val=%s" % ( i['timestamp'],i['counter_volume']) |
| |
| def periodic_print(): |
| print_samples() |
| #Print every 1minute |
| threading.Timer(60, periodic_print).start() |
| |
| |
| CPU_UPPER_THRESHOLD = 80 #80% |
| CPU_LOWER_THRESHOLD = 30 #30% |
| CPU_THRESHOLD_REPEAT = 3 |
| INITIAL_STATE = 'normal_config' |
| SCALE_UP_EVALUATION = 'scale_up_eval' |
| SCALE_DOWN_EVALUATION = 'scale_down_eval' |
| SCALE_UP_ALARM = 'scale_up' |
| SCALE_DOWN_ALARM = 'scale_down' |
| |
| def loadAllXosTenantInfo(): |
| print "SRIKANTH: Loading all XOS tenant info" |
| url = "http://ctl:9999/xos/controllerslices/" |
| admin_auth=("padmin@vicci.org", "letmein") # use your XOS username and password |
| controller_slices = requests.get(url, auth=admin_auth).json() |
| for cslice in controller_slices: |
| slice = requests.get(cslice['slice'], auth=admin_auth).json() |
| slice_name = slice['humanReadableName'] |
| if slice['service']: |
| service = requests.get(slice['service'], auth=admin_auth).json() |
| service_name = service['humanReadableName'] |
| else: |
| service_name = None |
| xos_tenant_info_map[cslice['tenant_id']] = {'service':service_name, 'slice':slice_name} |
| print "SRIKANTH: Project: %s Service:%s Slice:%s" % (cslice['tenant_id'],service_name,slice_name) |
| |
| def loadAllXosInstanceInfo(): |
| print "SRIKANTH: Loading all XOS instance info" |
| url = "http://130.127.133.87:9999/xos/instances/" |
| admin_auth=("padmin@vicci.org", "letmein") # use your XOS username and password |
| xos_instances = requests.get(url, auth=admin_auth).json() |
| for instance in xos_instances: |
| xos_instances_info_map[instance['instance_uuid']] = {'instance_name':instance['instance_name']} |
| |
| def getXosTenantInfo(project): |
| xos_tenant_info = xos_tenant_info_map.get(project, None) |
| if xos_tenant_info: |
| return xos_tenant_info |
| else: |
| loadAllXosTenantInfo() |
| xos_tenant_info = xos_tenant_info_map.get(project, None) |
| if not xos_tenant_info: |
| print "SRIKANTH: Project %s has no associated XOS slice" % project |
| return xos_tenant_info |
| |
| def getXosInstanceInfo(resource): |
| xos_instance_info = xos_instances_info_map.get(resource, None) |
| if xos_instance_info: |
| return xos_instance_info |
| else: |
| loadAllXosInstanceInfo() |
| xos_instance_info = xos_instances_info_map.get(resource, None) |
| if not xos_instance_info: |
| print "SRIKANTH: Resource %s has no associated XOS instance" % project |
| return xos_instance_info |
| |
| def handle_adjust_scale(project, adjust): |
| if (adjust != 'up') and (adjust != 'down'): |
| print "SRIKANTH: Invalid adjust value %s " % adjust |
| return |
| current_instances = len(projects_map[project]['resources'].keys()) |
| if (current_instances <=1 and adjust == 'down'): |
| print "SRIKANTH: %s is running with already minimum instances and can not scale down further " % project |
| return |
| if (current_instances >=2 and adjust == 'up'): |
| print "SRIKANTH: %s is running with already maximum instances and can not scale up further " % project |
| return |
| #xos_tenant = getXosTenantInfo(project) |
| xos_tenant = projects_map[project]['xos_tenant_info'] |
| if not xos_tenant: |
| print "SRIKANTH: Can not handle adjust_scale for Project %s because not associated with any slice" % project |
| return |
| xos_service = xos_tenant['service'] |
| xos_slice = xos_tenant['slice'] |
| if not xos_service or not xos_slice: |
| print "SRIKANTH: Can not handle adjust_scale for Project %s because not associated with any service or slice" % project |
| return |
| print "SRIKANTH: SCALE %s for Project %s, Slice=%s, Service=%s from current=%d to new=%d" % (adjust, project, xos_slice, xos_service, current_instances, current_instances+1 if (adjust=='up') else current_instances-1) |
| query_params = {'service':xos_service, 'slice_hint':xos_slice, 'scale':current_instances+1 if (adjust=='up') else current_instances-1} |
| url = "http://ctl:9999/xoslib/serviceadjustscale/" |
| admin_auth=("padmin@vicci.org", "letmein") # use your XOS username and password |
| response = requests.get(url, params=query_params, auth=admin_auth).json() |
| print "SRIKANTH: XOS adjust_scale response: %s" % response |
| |
| def periodic_cpu_threshold_evaluator(): |
| for project in projects_map.keys(): |
| aggregate_cpu_util = sum([resource['queue'][-1]['counter_volume'] \ |
| for resource in projects_map[project]['resources'].values()]) \ |
| /len(projects_map[project]['resources'].keys()) |
| |
| if (projects_map[project]['alarm'] == INITIAL_STATE or |
| projects_map[project]['alarm'] == SCALE_UP_ALARM or |
| projects_map[project]['alarm'] == SCALE_DOWN_ALARM): |
| if aggregate_cpu_util > CPU_UPPER_THRESHOLD: |
| projects_map[project]['uthreadshold_count'] = 1 |
| projects_map[project]['alarm'] = SCALE_UP_EVALUATION |
| if projects_map[project]['uthreadshold_count'] >= CPU_THRESHOLD_REPEAT: |
| projects_map[project]['alarm'] = SCALE_UP_ALARM |
| handle_adjust_scale(project, 'up') |
| elif aggregate_cpu_util < CPU_LOWER_THRESHOLD: |
| projects_map[project]['lthreadshold_count'] = 1 |
| projects_map[project]['alarm'] = SCALE_DOWN_EVALUATION |
| if projects_map[project]['lthreadshold_count'] >= CPU_THRESHOLD_REPEAT: |
| projects_map[project]['alarm'] = SCALE_DOWN_ALARM |
| handle_adjust_scale(project, 'down') |
| else: |
| projects_map[project]['uthreadshold_count'] = 0 |
| projects_map[project]['lthreadshold_count'] = 0 |
| projects_map[project]['alarm'] = INITIAL_STATE |
| elif projects_map[project]['alarm'] == SCALE_UP_EVALUATION: |
| if aggregate_cpu_util > CPU_UPPER_THRESHOLD: |
| projects_map[project]['uthreadshold_count'] += 1 |
| if projects_map[project]['uthreadshold_count'] >= CPU_THRESHOLD_REPEAT: |
| projects_map[project]['alarm'] = SCALE_UP_ALARM |
| handle_adjust_scale(project, 'up') |
| elif aggregate_cpu_util < CPU_LOWER_THRESHOLD: |
| projects_map[project]['lthreadshold_count'] += 1 |
| projects_map[project]['alarm'] = SCALE_DOWN_EVALUATION |
| else: |
| projects_map[project]['uthreadshold_count'] = 0 |
| projects_map[project]['alarm'] = INITIAL_STATE |
| elif projects_map[project]['alarm'] == SCALE_DOWN_EVALUATION: |
| if aggregate_cpu_util < CPU_LOWER_THRESHOLD: |
| projects_map[project]['lthreadshold_count'] += 1 |
| if projects_map[project]['lthreadshold_count'] >= CPU_THRESHOLD_REPEAT: |
| projects_map[project]['alarm'] = SCALE_DOWN_ALARM |
| handle_adjust_scale(project, 'down') |
| elif aggregate_cpu_util > CPU_UPPER_THRESHOLD: |
| projects_map[project]['uthreadshold_count'] += 1 |
| projects_map[project]['alarm'] = SCALE_UP_EVALUATION |
| else: |
| projects_map[project]['lthreadshold_count'] = 0 |
| projects_map[project]['alarm'] = INITIAL_STATE |
| threading.Timer(60, periodic_cpu_threshold_evaluator).start() |
| |
| def read_notification_from_ceilometer(host,port): |
| udp = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) # UDP |
| udp.bind((host, port)) |
| |
| while True: |
| data, source = udp.recvfrom(64000) |
| try: |
| sample = msgpack.loads(data, encoding='utf-8') |
| if sample['counter_name'] != 'cpu_util': |
| continue |
| if sample['project_id'] not in projects_map.keys(): |
| projects_map[sample['project_id']] = {} |
| projects_map[sample['project_id']]['xos_tenant_info'] = getXosTenantInfo(sample['project_id']) |
| projects_map[sample['project_id']]['resources'] = {} |
| projects_map[sample['project_id']]['uthreadshold_count'] = 0 |
| projects_map[sample['project_id']]['lthreadshold_count'] = 0 |
| projects_map[sample['project_id']]['alarm'] = INITIAL_STATE |
| resource_map = projects_map[sample['project_id']]['resources'] |
| if sample['resource_id'] not in resource_map.keys(): |
| resource_map[sample['resource_id']] = {} |
| resource_map[sample['resource_id']]['xos_instance_info'] = getXosInstanceInfo(sample['resource_id']) |
| resource_map[sample['resource_id']]['queue'] = [] |
| samples_queue = resource_map[sample['resource_id']]['queue'] |
| sample = {'counter_name':sample['counter_name'], |
| 'project_id':sample['project_id'], |
| 'resource_id':sample['resource_id'], |
| 'timestamp':sample['timestamp'], |
| 'counter_unit':sample['counter_unit'], |
| 'counter_volume':sample['counter_volume']} |
| deque = collections.deque(samples_queue, maxlen=10) |
| deque.append(sample) |
| resource_map[sample['resource_id']]['queue'] = list(deque) |
| except Exception as e: |
| print e |
| |
| def setup_webserver(): |
| try: |
| #config = ConfigParser.ConfigParser() |
| #config.read('pub_sub.conf') |
| #webserver_host = config.get('WEB_SERVER','webserver_host') |
| #webserver_port = int (config.get('WEB_SERVER','webserver_port')) |
| #client_host = config.get('CLIENT','client_host') |
| #client_port = int (config.get('CLIENT','client_port')) |
| |
| #log_level = config.get('LOGGING','level') |
| #log_file = config.get('LOGGING','filename') |
| |
| #level = LEVELS.get(log_level, logging.NOTSET) |
| #logging.basicConfig(filename=log_file,format='%(asctime)s %(levelname)s %(message)s',\ |
| # datefmt=_DEFAULT_LOG_DATE_FORMAT,level=level) |
| webserver_host = '0.0.0.0' |
| webserver_port = 9991 |
| |
| except Exception as e: |
| print("* Error in config file:",e.__str__()) |
| logging.error("* Error in confing file:%s",e.__str__()) |
| else: |
| app.run(host=webserver_host,port=webserver_port,debug=True, use_reloader=False) |
| |
| |
| def main(): |
| monitoring_channel = acquire_xos_monitoring_channel() |
| if not monitoring_channel: |
| print 'SRIKANTH: XOS monitoring_channel is not created... Create it before using this app' |
| return |
| loadAllXosTenantInfo() |
| loadAllXosInstanceInfo() |
| thread.start_new(read_notification_from_ceilometer,(UDP_IP,UDP_PORT,)) |
| ceilometer_url = monitoring_channel['ceilometer_url'] |
| subscribe_data = {"sub_info":"cpu_util","app_id":"xos_auto_scale","target":"udp://10.11.10.1:12346"} |
| subscribe_url = ceilometer_url + 'v2/subscribe' |
| response = requests.post(subscribe_url, data=json.dumps(subscribe_data)) |
| print 'SRIKANTH: Ceilometer Subscription status:%s' % response.text |
| #TODO: Fix the typo in 'sucess' |
| if (not 'sucess' in response.text) and (not 'already exists' in response.text): |
| print 'SRIKANTH: Ceilometer Subscription unsuccessful...Exiting' |
| return |
| periodic_cpu_threshold_evaluator() |
| periodic_print() |
| setup_webserver() |
| |
| if __name__ == "__main__": |
| main() |