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# Licensed 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.
import subprocess
import json
import re
from decimal import Decimal
def get_container_list(ip):
"""
Get the list of containers running on the host
Args:
param1 (str): host ip
Returns:
list of containers in string
"""
cmd = ['ssh', '-i', 'onap_dev']
cmd.append('ubuntu@' + ip)
cmd.append("sudo docker ps --format '{{.Names}}'")
ssh = subprocess.Popen(cmd, shell=False, stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
result = ssh.stdout.readlines()
containers = []
if result == []:
error = ssh.stderr.readlines()
print error
else:
for line in result:
token = line.decode('ascii').strip()
containers.append(token)
return containers
def get_container_volume_size(ip, container):
"""
Get container total volume usage
Args:
param1 (str): host ip
param2 (str): container name
Returns:
float number in GB if the container has volume(s), None otherwise
"""
cmd = ['ssh', '-i', 'onap_dev']
cmd.append('ubuntu@' + ip)
cmd.append("sudo docker inspect -f '{{ json .Mounts }}'")
cmd.append(container)
ssh = subprocess.Popen(cmd, shell=False, stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
result = ssh.stdout.readlines()
total = None
if result == []:
error = ssh.stderr.readlines()
print error
else:
data = json.loads(result[0])
for entry in data:
if entry['Type'] == 'volume':
name = entry['Name']
size = get_volume_size(ip, name)
if total is None:
total = size
else:
total = total + size
return total
def get_volume_size(ip, volume):
"""
Get a volume size
Args:
param1 (str): host ip
param2 (str): volume name
Returns:
float number in GB
"""
cmd = ['ssh', '-i', 'onap_dev']
cmd.append('ubuntu@' + ip)
cmd.append('sudo docker system df -v')
p1 = subprocess.Popen(cmd, stdout=subprocess.PIPE)
p2 = subprocess.Popen(['grep', volume], stdin=p1.stdout,
stdout=subprocess.PIPE)
p1.stdout.close()
(output, err) = p2.communicate()
size = output.split()[2]
return convert_to_GB(size)
def convert_to_GB(s):
"""
Convert volume size to GB
Args:
param1 (str): volume size with unit
Returns:
float number representing volume size in GB
"""
if s.endswith('GB'):
d = float(re.sub('[^0-9\\.]', '', s))
if s.endswith('MB'):
d = round(Decimal(float(re.sub('[^0-9\\.]', '', s)) / 1000.0),
1)
if s.endswith('kB'):
d = round(Decimal(float(re.sub('[^0-9\\.]', '', s))
/ 1000000.0), 1)
return d
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