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+# Copyright 2016 Huawei Technologies Co. Ltd.
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+"""
+Collect the wanted data by using ceilometer client to send HTTP request to
+ceilometer server
+"""
+
+# Import modules
+import subprocess
+import ceilometerclient.client
+import json
+import readline # It automatically wraps studin
+
+# First source openrc * *; Otherwise, there is a error message.
+print "source your openrc file, for example, source /opt/stack/devstack/openrc",
+print "admin admin"
+source = raw_input("> ")
+dumps = '/usr/bin/python -c '\
+ + '"import os, json; print json.dumps(dict(os.environ))"'
+command = ['/bin/bash', '-c', source + '&&' + dumps]
+pipe = subprocess.Popen(command, stdout=subprocess.PIPE)
+env = json.loads(pipe.stdout.read())
+
+
+# Create an authenticated ceilometer client
+c_client = ceilometerclient.client.get_client(
+ "2", os_username=env['OS_USERNAME'],
+ os_password=env['OS_PASSWORD'],
+ os_tenant_name=env['OS_TENANT_NAME'],
+ os_auth_url=env['OS_AUTH_URL'])
+
+resource_list = c_client.resources.list()
+resource_id_list = []
+print '\nList all resource ids which can be measured:'
+index = 0
+for each in resource_list:
+ print "\t* resource_id_list[%d]: " % index, each.resource_id
+ index += 1
+ resource_id_list.append(each.resource_id)
+print 'End', '=' * 15
+
+print "\nThe following shows resources corresponding to resource ids: \n\
+\t* resource_id_list[0:3] represents image ids \n \
+\t* resource_id_list[3] represents instance ids \n \
+\t* resource_id_list[4:6] represents disk ids \n \
+\t* resource_id_list[6] represents interface ids \n \
+So you can collect what kind of data you like. Just type the number \
+from 0 to 6"
+input_number = int(raw_input("> Please type the number: "))
+resource_id = resource_id_list[input_number]
+
+query_meter = [dict(field='resource_id', op='eq', value=resource_id)]
+meter_list = c_client.meters.list(q=query_meter)
+meter_name_list = []
+print '\nList meter names related with the resource id--' + resource_id + ":"
+for each in meter_list:
+ print "\t-", each.name
+ meter_name_list.append(each.name)
+print 'End', '+' * 15
+
+print "\nYou can collect whatever meters you like just by typing the meter \
+names and using ',' as the separator,\n e.g., disk.read.requests.rate, \
+disk.write.requests.rate, disk.read.bytes.rate, \
+disk.write.bytes.rate, cpu_util."
+
+try:
+ input_meters = raw_input("> ")
+ collect_meters = input_meters.split(",")
+ collect_meters = [meter.strip() for meter in collect_meters]
+except EOFError:
+ print "\n Good Bye! Welcome again next time!"
+
+
+collect_meter_samples = []
+print "At the same time, you need to specify the beginning time and the \
+end time for the collection. \nThe time format is fixed, \
+e.g., 2016-02-28T00:00:00. "
+begin_time = raw_input("> Please input the beginning time: ")
+end_time = raw_input("> Please input the end time: ")
+for each in collect_meters:
+ query = [
+ dict(field='resource_id', op='eq', value=resource_id),
+ dict(field='timestamp', op='ge', value=begin_time),
+ dict(field='timestamp', op='lt', value=end_time),
+ dict(field='meter', op='eq', value=each)
+ ]
+ collect_meter_samples.\
+ append(c_client.new_samples.list(q=query, limit=1000))
+# append(c_client.samples.list(each, limit=1000))
+
+
+fout = open('collectMeterSamples.arff', 'w')
+head_info = "% ARFF file for the collected meter sampleh" \
+ + " with some numeric feature from ceilometer API. \n \n" \
+ + "@relation collected samples for VMs on host \n \n" \
+ + "@attribute timestample \n" \
+ + "@attribute resource id \n "
+
+for each in collect_meters:
+ head_info = head_info + "@attribute " + each + "\n"
+
+head_info = head_info + "@data \n \n"
+fout.write(head_info)
+
+count = 0
+collect_meter_sample_values = []
+for each in collect_meter_samples[1:]:
+ each_sample_value = []
+ for i in each:
+ # each_sample_value.append(str(i.counter_volume))
+ each_sample_value.append(str(i.volume))
+ collect_meter_sample_values.append(each_sample_value)
+
+for each in collect_meter_samples[0]:
+ fout.write(each.timestamp + ', ' + each.resource_id)
+ # fout.write(', ' + str(each.counter_volume))
+ fout.write(', ' + str(each.volume))
+ for i in collect_meter_sample_values:
+ fout.write(', ' + i[count])
+ fout.write('\n')
+ count += 1
+
+fout.close()
+print "\nGreat! Collection is done. \n%d rows of meter samples have been \
+written in the file named 'collectMeterSamples.arff' in your current \
+directory. \nPlease check!" % count