class LinuxClient(BasePersistentLinuxClient):
def __init__(self,
ip_address=None,
server_id=None,
username=None,
password=None,
config=None,
os_distro=None):
self.client_log = cclogging.getLogger(
cclogging.get_object_namespace(self.__class__))
ssh_timeout = config.connection_timeout
if ip_address is None:
raise ServerUnreachable("None")
self.ip_address = ip_address
self.username = username
if self.username is None:
self.username = '******'
self.password = password
self.server_id = server_id
start = int(time.time())
reachable = False
while not reachable:
reachable = PingClient.ping(ip_address,
config.ip_address_version_for_ssh)
time.sleep(config.connection_retry_interval)
if int(time.time()) - start >= config.connection_timeout:
raise ServerUnreachable(ip_address)
self.ssh_client = SSHBaseClient(self.ip_address,
self.username,
self.password,
timeout=ssh_timeout)
if not self.ssh_client.test_connection_auth():
self.client_log.error("Ssh connection failed for: IP:{0} \
Username:{1} Password: {2}".format(self.ip_address,
self.username,
self.password))
raise SshConnectionException("ssh connection failed")
def can_connect_to_public_ip(self):
"""
@summary: Checks if you can connect to server using public ip
@return: True if you can connect, False otherwise
@rtype: bool
"""
# This returns true since the connection has already been tested in the
# init method
return self.ssh_client is not None
def can_ping_public_ip(self, public_addresses, ip_address_version_for_ssh):
"""
@summary: Checks if you can ping a public ip
@param addresses: List of public addresses
@type addresses: Address List
@return: True if you can ping, False otherwise
@rtype: bool
"""
for public_address in public_addresses:
if public_address.version == 4 and not PingClient.ping(
public_address.addr, ip_address_version_for_ssh):
return False
return True
def can_authenticate(self):
"""
@summary: Checks if you can authenticate to the server
@return: True if you can connect, False otherwise
@rtype: bool
"""
return self.ssh_client.test_connection_auth()
def reboot(self, timeout=100):
'''
@timeout: max timeout for the machine to reboot
'''
ssh_connector = SSHConnector(self.ip_address, self.username,
self.password)
response, prompt = ssh_connector.exec_shell_command("sudo reboot")
response, prompt = ssh_connector.exec_shell_command(self.password)
self.client_log.info("Reboot response for %s: %s" %
(self.ip_address, response))
max_time = time.time() + timeout
while time.time() < max_time:
time.sleep(5)
if self.ssh_client.test_connection_auth():
self.client_log.info("Reboot successful for %s" %
(self.ip_address))
return True
def get_hostname(self):
"""
@summary: Gets the host name of the server
@return: The host name of the server
@rtype: string
"""
return self.ssh_client.exec_command("hostname").rstrip()
def can_remote_ping_private_ip(self, private_addresses):
"""
@summary: Checks if you can ping a private ip from this server.
@param private_addresses: List of private addresses
@type private_addresses: Address List
@return: True if you can ping, False otherwise
@rtype: bool
"""
for private_address in private_addresses:
if private_address.version == 4 and not PingClient.ping_using_remote_machine(
self.ssh_client, private_address.addr):
return False
return True
def get_files(self, path):
"""
@summary: Gets the list of filenames from the path
@param path: Path from where to get the filenames
@type path: string
@return: List of filenames
@rtype: List of strings
"""
command = "ls -m " + path
return self.ssh_client.exec_command(command).rstrip('\n').split(', ')
def get_ram_size_in_mb(self):
"""
@summary: Returns the RAM size in MB
@return: The RAM size in MB
@rtype: string
"""
output = self.ssh_client.exec_command('free -m | grep Mem')
# TODO (dwalleck): We should handle the failure case here
if output:
return output.split()[1]
def get_swap_size_in_mb(self):
"""
@summary: Returns the Swap size in MB
@return: The Swap size in MB
@rtype: int
"""
output = self.ssh_client.exec_command(
'fdisk -l /dev/xvdc1 2>/dev/null | grep "Disk.*bytes"').rstrip(
'\n')
if output:
return int(output.split()[2])
def get_disk_size_in_gb(self, disk_path):
"""
@summary: Returns the disk size in GB
@return: The disk size in GB
@rtype: int
"""
command = "df -h | grep '{0}'".format(disk_path)
output = self.ssh_client.exec_command(command)
size = output.split()[1]
def is_decimal(char):
return str.isdigit(char) or char == "."
size = filter(is_decimal, size)
return float(size)
def get_number_of_vcpus(self):
"""
@summary: Get the number of vcpus assigned to the server
@return: The number of vcpus assigned to the server
@rtype: int
"""
command = 'cat /proc/cpuinfo | grep processor | wc -l'
output = self.ssh_client.exec_command(command)
return int(output)
def get_partitions(self):
"""
@summary: Returns the contents of /proc/partitions
@return: The partitions attached to the instance
@rtype: string
"""
command = 'cat /proc/partitions'
output = self.ssh_client.exec_command(command)
return output
def get_uptime(self):
"""
@summary: Get the uptime time of the server
@return: The uptime of the server
"""
result = self.ssh_client.exec_command('cat /proc/uptime')
uptime = float(result.split(' ')[0])
return uptime
def create_file(self, file_name, file_content, file_path=None):
'''
@summary: Create a new file
@param file_name: File Name
@type file_name: String
@param file_content: File Content
@type file_content: String
@return filedetails: File details such as content, name and path
@rtype filedetails; FileDetails
'''
if file_path is None:
file_path = "/root/" + file_name
self.ssh_client.exec_command('echo -n ' + file_content + '>>' +
file_path)
return FileDetails("644", file_content, file_path)
def get_file_details(self, filepath):
"""
@summary: Get the file details
@param filepath: Path to the file
@type filepath: string
@return: File details including permissions and content
@rtype: FileDetails
"""
output = self.ssh_client.exec_command(
'[ -f ' + filepath +
' ] && echo "File exists" || echo "File does not exist"')
if not output.rstrip('\n') == 'File exists':
raise FileNotFoundException("File:" + filepath +
" not found on instance.")
file_permissions = self.ssh_client.exec_command('stat -c %a ' +
filepath).rstrip("\n")
file_contents = self.ssh_client.exec_command('cat ' + filepath)
return FileDetails(file_permissions, file_contents, filepath)
def is_file_present(self, filepath):
"""
@summary: Check if the given file is present
@param filepath: Path to the file
@type filepath: string
@return: True if File exists, False otherwise
"""
output = self.ssh_client.exec_command(
'[ -f ' + filepath +
' ] && echo "File exists" || echo "File does not exist"')
return output.rstrip('\n') == 'File exists'
def get_partition_types(self):
"""
@summary: Return the partition types for all partitions
@return: The partition types for all partitions
@rtype: Dictionary
"""
partitions_list = self.ssh_client.exec_command('blkid').rstrip(
'\n').split('\n')
partition_types = {}
for row in partitions_list:
partition_name = row.split()[0].rstrip(':')
partition_types[partition_name] = re.findall(
r'TYPE="([^"]+)"', row)[0]
return partition_types
def get_partition_details(self):
"""
@summary: Return the partition details
@return: The partition details
@rtype: Partition List
"""
# Return a list of partition objects that each contains the name and
# size of the partition in bytes and the type of the partition
partition_types = self.get_partition_types()
partition_names = ' '.join(partition_types.keys())
partition_size_output = self.ssh_client.exec_command(
'fdisk -l %s 2>/dev/null | grep "Disk.*bytes"' %
(partition_names)).rstrip('\n').split('\n')
partitions = []
for row in partition_size_output:
row_details = row.split()
partition_name = row_details[1].rstrip(':')
partition_type = partition_types[partition_name]
if partition_type == 'swap':
partition_size = DiskSize(float(row_details[2]),
row_details[3].rstrip(','))
else:
partition_size = DiskSize(
int(row_details[4]) / 1073741824, 'GB')
partitions.append(
Partition(partition_name, partition_size, partition_type))
return partitions
def verify_partitions(self, expected_disk_size, expected_swap_size,
server_status, actual_partitions):
"""
@summary: Verify the partition details of the server
@param expected_disk_size: The expected value of the Disk size in GB
@type expected_disk_size: string
@param expected_swap_size: The expected value of the Swap size in GB
@type expected_swap_size: string
@param server_status: The status of the server
@type server_status: string
@param actual_partitions: The actual partition details of the server
@type actual_partitions: Partition List
@return: The result of verification and the message to be displayed
@rtype: Tuple (bool,string)
"""
expected_partitions = self._get_expected_partitions(
expected_disk_size, expected_swap_size, server_status)
if actual_partitions is None:
actual_partitions = self.get_partition_details()
for partition in expected_partitions:
if partition not in actual_partitions:
return False, self._construct_partition_mismatch_message(
expected_partitions, actual_partitions)
return True, "Partitions Matched"
def _get_expected_partitions(self, expected_disk_size, expected_swap_size,
server_status):
"""
@summary: Returns the expected partitions for a server based on server status
@param expected_disk_size: The Expected disk size of the server in GB
@type expected_disk_size: string
@param expected_swap_size: The Expected swap size of the server in MB
@type expected_swap_size: string
@param server_status: Status of the server (ACTIVE or RESCUE)
@type server_status: string
@return: The expected partitions
@rtype: Partition List
"""
# ignoring swap untill the rescue functionality is clarified
expected_partitions = [
Partition('/dev/xvda1', DiskSize(expected_disk_size, 'GB'),
'ext3'),
Partition('/dev/xvdc1', DiskSize(expected_swap_size, 'MB'), 'swap')
]
if str.upper(server_status) == 'RESCUE':
expected_partitions = [
Partition('/dev/xvdb1', DiskSize(expected_disk_size, 'GB'),
'ext3')
]
# expected_partitions.append(Partition('/dev/xvdd1',
# DiskSize(expected_swap_size, 'MB'), 'swap'))
return expected_partitions
def _construct_partition_mismatch_message(self, expected_partitions,
actual_partitions):
"""
@summary: Constructs the partition mismatch message based on
expected_partitions and actual_partitions
@param expected_partitions: Expected partitions of the server
@type expected_partitions: Partition List
@param actual_partitions: Actual Partitions of the server
@type actual_partitions: Partition List
@return: The partition mismatch message
@rtype: string
"""
message = 'Partitions Mismatch \n Expected Partitions:\n'
for partition in expected_partitions:
message += str(partition) + '\n'
message += ' Actual Partitions:\n'
for partition in actual_partitions:
message += str(partition) + '\n'
return message
def mount_file_to_destination_directory(self, source_path,
destination_path):
'''
@summary: Mounts the file to destination directory
@param source_path: Path to file source
@type source_path: String
@param destination_path: Path to mount destination
@type destination_path: String
'''
self.ssh_client.exec_command('mount ' + source_path + ' ' +
destination_path)
class LinuxClient(BasePersistentLinuxClient):
def __init__(self, ip_address=None, server_id=None, username=None,
password=None, config=None, os_distro=None, key=None):
self.client_log = cclogging.getLogger(
cclogging.get_object_namespace(self.__class__))
ssh_timeout = config.connection_timeout
if ip_address is None:
raise ServerUnreachable("None")
self.ip_address = ip_address
self.username = username
if self.username is None:
self.username = '******'
self.password = password
self.server_id = server_id
start = int(time.time())
reachable = False
while not reachable:
reachable = PingClient.ping(ip_address,
config.ip_address_version_for_ssh)
time.sleep(config.connection_retry_interval)
if int(time.time()) - start >= config.connection_timeout:
raise ServerUnreachable(ip_address)
self.ssh_client = SSHBaseClient(self.ip_address,
self.username,
self.password,
timeout=ssh_timeout,
key=key)
if not self.ssh_client.test_connection_auth():
self.client_log.error("Ssh connection failed for: IP:{0} \
Username:{1} Password: {2}".format(self.ip_address,
self.username,
self.password))
raise SshConnectionException("ssh connection failed")
def can_connect_to_public_ip(self):
"""
@summary: Checks if you can connect to server using public ip
@return: True if you can connect, False otherwise
@rtype: bool
"""
# This returns true since the connection has already been tested in the
# init method
return self.ssh_client is not None
def can_ping_public_ip(self, public_addresses, ip_address_version_for_ssh):
"""
@summary: Checks if you can ping a public ip
@param addresses: List of public addresses
@type addresses: Address List
@return: True if you can ping, False otherwise
@rtype: bool
"""
for public_address in public_addresses:
if public_address.version == 4 and not PingClient.ping(
public_address.addr, ip_address_version_for_ssh):
return False
return True
def can_authenticate(self):
"""
@summary: Checks if you can authenticate to the server
@return: True if you can connect, False otherwise
@rtype: bool
"""
return self.ssh_client.test_connection_auth()
def reboot(self, timeout=100):
'''
@timeout: max timeout for the machine to reboot
'''
ssh_connector = SSHBaseClient(self.ip_address, self.username,
self.password)
response, prompt = ssh_connector.exec_shell_command("sudo reboot")
response, prompt = ssh_connector.exec_shell_command(self.password)
self.client_log.info("Reboot response for %s: %s" % (self.ip_address,
response))
max_time = time.time() + timeout
while time.time() < max_time:
time.sleep(5)
if self.ssh_client.test_connection_auth():
self.client_log.info("Reboot successful for %s"
% (self.ip_address))
return True
def get_hostname(self):
"""
@summary: Gets the host name of the server
@return: The host name of the server
@rtype: string
"""
return self.ssh_client.exec_command("hostname").rstrip()
def can_remote_ping_private_ip(self, private_addresses):
"""
@summary: Checks if you can ping a private ip from this server.
@param private_addresses: List of private addresses
@type private_addresses: Address List
@return: True if you can ping, False otherwise
@rtype: bool
"""
for private_address in private_addresses:
remote = PingClient.ping_using_remote_machine(self.ssh_client,
private_address.addr)
if private_address.version == 4 and not remote:
return False
return True
def get_files(self, path):
"""
@summary: Gets the list of filenames from the path
@param path: Path from where to get the filenames
@type path: string
@return: List of filenames
@rtype: List of strings
"""
command = "ls -m " + path
return self.ssh_client.exec_command(command).rstrip('\n').split(', ')
def get_ram_size_in_mb(self):
"""
@summary: Returns the RAM size in MB
@return: The RAM size in MB
@rtype: string
"""
output = self.ssh_client.exec_command('free -m | grep Mem')
# TODO (dwalleck): We should handle the failure case here
if output:
return output.split()[1]
def get_swap_size_in_mb(self):
"""
@summary: Returns the Swap size in MB
@return: The Swap size in MB
@rtype: int
"""
output = self.ssh_client.exec_command(
'fdisk -l /dev/xvdc1 2>/dev/null | grep '
'"Disk.*bytes"').rstrip('\n')
if output:
return int(output.split()[2])
def get_disk_size_in_gb(self, disk_path):
"""
@summary: Returns the disk size in GB
@return: The disk size in GB
@rtype: int
"""
command = "df -h | grep '{0}'".format(disk_path)
output = self.ssh_client.exec_command(command)
size = output.split()[1]
def is_decimal(char):
return str.isdigit(char) or char == "."
size = filter(is_decimal, size)
return float(size)
def get_number_of_vcpus(self):
"""
@summary: Get the number of vcpus assigned to the server
@return: The number of vcpus assigned to the server
@rtype: int
"""
command = 'cat /proc/cpuinfo | grep processor | wc -l'
output = self.ssh_client.exec_command(command)
return int(output)
def get_partitions(self):
"""
@summary: Returns the contents of /proc/partitions
@return: The partitions attached to the instance
@rtype: string
"""
command = 'cat /proc/partitions'
output = self.ssh_client.exec_command(command)
return output
def get_uptime(self):
"""
@summary: Get the uptime time of the server
@return: The uptime of the server
"""
result = self.ssh_client.exec_command('cat /proc/uptime')
uptime = float(result.split(' ')[0])
return uptime
def create_file(self, file_name, file_content, file_path=None):
'''
@summary: Create a new file
@param file_name: File Name
@type file_name: String
@param file_content: File Content
@type file_content: String
@return filedetails: File details such as content, name and path
@rtype filedetails; FileDetails
'''
if file_path is None:
file_path = "/root/" + file_name
self.ssh_client.exec_command(
'echo -n ' + file_content + '>>' + file_path)
return FileDetails("644", file_content, file_path)
def get_file_details(self, filepath):
"""
@summary: Get the file details
@param filepath: Path to the file
@type filepath: string
@return: File details including permissions and content
@rtype: FileDetails
"""
command = ('[ -f ' + filepath + ' ] && echo "File exists" || '
'echo "File does not exist"')
output = self.ssh_client.exec_command(command)
if not output.rstrip('\n') == 'File exists':
raise FileNotFoundException(
"File:" + filepath + " not found on instance.")
file_permissions = self.ssh_client.exec_command(
'stat -c %a ' + filepath).rstrip("\n")
file_contents = self.ssh_client.exec_command('cat ' + filepath)
return FileDetails(file_permissions, file_contents, filepath)
def is_file_present(self, filepath):
"""
@summary: Check if the given file is present
@param filepath: Path to the file
@type filepath: string
@return: True if File exists, False otherwise
"""
command = ('[ -f ' + filepath + ' ] && echo "File exists" || '
'echo "File does not exist"')
output = self.ssh_client.exec_command(command)
return output.rstrip('\n') == 'File exists'
def get_partition_types(self):
"""
@summary: Return the partition types for all partitions
@return: The partition types for all partitions
@rtype: Dictionary
"""
partitions_list = self.ssh_client.exec_command(
'blkid').rstrip('\n').split('\n')
partition_types = {}
for row in partitions_list:
partition_name = row.split()[0].rstrip(':')
partition_types[partition_name] = re.findall(
r'TYPE="([^"]+)"', row)[0]
return partition_types
def get_partition_details(self):
"""
@summary: Return the partition details
@return: The partition details
@rtype: Partition List
"""
# Return a list of partition objects that each contains the name and
# size of the partition in bytes and the type of the partition
partition_types = self.get_partition_types()
partition_names = ' '.join(partition_types.keys())
partition_size_output = self.ssh_client.exec_command(
'fdisk -l %s 2>/dev/null | '
'grep "Disk.*bytes"' % partition_names).rstrip('\n').split('\n')
partitions = []
for row in partition_size_output:
row_details = row.split()
partition_name = row_details[1].rstrip(':')
partition_type = partition_types[partition_name]
if partition_type == 'swap':
partition_size = DiskSize(
float(row_details[2]), row_details[3].rstrip(','))
else:
partition_size = DiskSize(
int(row_details[4]) / 1073741824, 'GB')
partitions.append(
Partition(partition_name, partition_size, partition_type))
return partitions
def verify_partitions(self, expected_disk_size, expected_swap_size,
server_status, actual_partitions):
"""
@summary: Verify the partition details of the server
@param expected_disk_size: The expected value of the Disk size in GB
@type expected_disk_size: string
@param expected_swap_size: The expected value of the Swap size in GB
@type expected_swap_size: string
@param server_status: The status of the server
@type server_status: string
@param actual_partitions: The actual partition details of the server
@type actual_partitions: Partition List
@return: The result of verification and the message to be displayed
@rtype: Tuple (bool,string)
"""
expected_partitions = self._get_expected_partitions(
expected_disk_size, expected_swap_size, server_status)
if actual_partitions is None:
actual_partitions = self.get_partition_details()
for partition in expected_partitions:
if partition not in actual_partitions:
return False, self._construct_partition_mismatch_message(
expected_partitions, actual_partitions)
return True, "Partitions Matched"
def _get_expected_partitions(self, expected_disk_size, expected_swap_size,
server_status):
"""
@summary: Returns the expected partitions for a server based on status
@param expected_disk_size: The Expected disk size of the server in GB
@type expected_disk_size: string
@param expected_swap_size: The Expected swap size of the server in MB
@type expected_swap_size: string
@param server_status: Status of the server (ACTIVE or RESCUE)
@type server_status: string
@return: The expected partitions
@rtype: Partition List
"""
# ignoring swap untill the rescue functionality is clarified
expected_partitions = [Partition('/dev/xvda1',
DiskSize(expected_disk_size, 'GB'),
'ext3'),
Partition('/dev/xvdc1',
DiskSize(expected_swap_size, 'MB'),
'swap')]
if str.upper(server_status) == 'RESCUE':
expected_partitions = [Partition(
'/dev/xvdb1', DiskSize(expected_disk_size, 'GB'), 'ext3')]
# expected_partitions.append(Partition('/dev/xvdd1',
# DiskSize(expected_swap_size, 'MB'), 'swap'))
return expected_partitions
def _construct_partition_mismatch_message(self, expected_partitions,
actual_partitions):
"""
@summary: Constructs the partition mismatch message based on
expected_partitions and actual_partitions
@param expected_partitions: Expected partitions of the server
@type expected_partitions: Partition List
@param actual_partitions: Actual Partitions of the server
@type actual_partitions: Partition List
@return: The partition mismatch message
@rtype: string
"""
message = 'Partitions Mismatch \n Expected Partitions:\n'
for partition in expected_partitions:
message += str(partition) + '\n'
message += ' Actual Partitions:\n'
for partition in actual_partitions:
message += str(partition) + '\n'
return message
def mount_file_to_destination_directory(self, source_path,
destination_path):
'''
@summary: Mounts the file to destination directory
@param source_path: Path to file source
@type source_path: String
@param destination_path: Path to mount destination
@type destination_path: String
'''
self.ssh_client.exec_command(
'mount ' + source_path + ' ' + destination_path)
def get_xen_user_metadata(self):
command = 'xenstore-ls vm-data/user-metadata'
output = self.ssh_client.exec_command(command)
meta_list = output.split('\n')
meta = {}
for item in meta_list:
# Skip any blank lines
if item:
meta_item = item.split("=")
key = meta_item[0].strip()
value = meta_item[1].strip('" ')
meta[key] = value
return meta
def create_directory(self, path):
'''
@summary: Creates Directory
@param path: Directory path
@type path: string
'''
command = "{0} {1}".format("mkdir -p", path)
output = self.ssh_client.exec_command(command)
return output
def is_directory_present(self, directory_path):
'''
@summary: Check if directory is present
@param path: Path for the directory
@type path: string
'''
cmd_str = "{0} {1} {2} {3} {4}"
args = ["[ -d",
directory_path,
"] && echo 'Directory found' || echo 'Directory",
directory_path, "not found'"]
command = cmd_str.format(*args)
output = self.ssh_client.exec_command(command)
return output.rstrip('\n') == 'Directory found'
class BasePersistentLinuxClient(object):
def __init__(self, ip_address, username, password, ssh_timeout=600, prompt=None):
self.ssh_client = SSHBaseClient(ip_address, username, password, ssh_timeout)
self.prompt = prompt
if not self.ssh_client.test_connection_auth():
raise
def format_disk_device(self, device, fstype):
'''Formats entire device, does not create partitions'''
return self.ssh_client.exec_command(
"mkfs.%s %s\n" % (str(fstype).lower(), str(device)))
def mount_disk_device(self, device, mountpoint, fstype, create_mountpoint=True):
'''
Mounts a disk at a specified mountpoint.
Performs 'touch mountpoint' before executing
'''
self.ssh_client.exec_command("mkdir %s" % str(mountpoint))
return self.ssh_client.exec_command(
"mount -t %s %s %s\n" % (str(fstype).lower(),
str(device), str(mountpoint)))
def unmount_disk_device(self, mountpoint):
'''
Forces unmounts (umount -f) a disk at a specified mountpoint.
'''
return self.ssh_client.exec_command(
"umount -f %s\n" % (str(mountpoint)))
def write_random_data_to_disk(self, dir_path, filename, blocksize=1024,
count=1024):
'''Uses dd command to write blocksize*count bytes to dir_path/filename
via ssh on remote machine.
By default writes one mebibyte (2^20 bytes) if blocksize and count
are not defined.
NOTE: 1 MEBIbyte (2^20) != 1 MEGAbyte (10^6) for all contexts
Note: dd if=/dev/urandom
'''
dd_of = os.path.join(dir_path, str(filename))
return self.ssh_client.exec_command(
"dd if=/dev/urandom of=%s bs=%s count=%s\n" %
(str(dd_of), str(blocksize), str(count)))
def write_zeroes_data_to_disk(self, disk_mountpoint, filename,
blocksize=1024, count=1024):
'''By default writes one mebibyte (2^20 bytes)'''
of = '%s/%s' % (disk_mountpoint, str(filename))
return self.ssh_client.exec_command(
"dd if=/dev/zero of=%s bs=%s count=%s\n" %
(str(of), str(blocksize), str(count)))
def execute_resource_bomb(self):
'''By default executes :(){ :|:& };:'''
return self.ssh_client.exec_command(":(){ :|:& };:")
def stat_file(self, filepath):
sshresp = self.ssh_client.exec_command("stat %s\n" % str(filepath))
return sshresp
def get_file_size_bytes(self, filepath):
'''
Performs wc -c on path provided, returning the numerical count in
the result
'''
sshresp = self.ssh_client.exec_command("wc -c %s\n" % str(filepath))
result = re.search('^(.*)\s', sshresp)
try:
return result.groups()[0]
except:
return None
def get_file_md5hash(self, filepath):
'''
Performs binary mode md5sum of file and returns hash.
(md5sum -b <file>)
'''
sshresp = self.ssh_client.exec_command("md5sum -b %s\n" % str(filepath))
result = re.search('^(.*)\s', sshresp)
try:
return result.groups()[0]
except:
return None
class BasePersistentLinuxClient(object):
def __init__(self,
ip_address,
username,
password,
ssh_timeout=600,
prompt=None):
self.ssh_client = SSHBaseClient(ip_address, username, password,
ssh_timeout)
self.prompt = prompt
if not self.ssh_client.test_connection_auth():
raise
def format_disk_device(self, device, fstype):
'''Formats entire device, does not create partitions'''
return self.ssh_client.exec_command("mkfs.%s %s\n" %
(str(fstype).lower(), str(device)))
def mount_disk_device(self,
device,
mountpoint,
fstype,
create_mountpoint=True):
'''
Mounts a disk at a specified mountpoint.
Performs 'touch mountpoint' before executing
'''
self.ssh_client.exec_command("mkdir %s" % str(mountpoint))
return self.ssh_client.exec_command(
"mount -t %s %s %s\n" %
(str(fstype).lower(), str(device), str(mountpoint)))
def unmount_disk_device(self, mountpoint):
'''
Forces unmounts (umount -f) a disk at a specified mountpoint.
'''
return self.ssh_client.exec_command("umount -f %s\n" %
(str(mountpoint)))
def write_random_data_to_disk(self,
dir_path,
filename,
blocksize=1024,
count=1024):
'''Uses dd command to write blocksize*count bytes to dir_path/filename
via ssh on remote machine.
By default writes one mebibyte (2^20 bytes) if blocksize and count
are not defined.
NOTE: 1 MEBIbyte (2^20) != 1 MEGAbyte (10^6) for all contexts
Note: dd if=/dev/urandom
'''
dd_of = os.path.join(dir_path, str(filename))
return self.ssh_client.exec_command(
"dd if=/dev/urandom of=%s bs=%s count=%s\n" %
(str(dd_of), str(blocksize), str(count)))
def write_zeroes_data_to_disk(self,
disk_mountpoint,
filename,
blocksize=1024,
count=1024):
'''By default writes one mebibyte (2^20 bytes)'''
of = '%s/%s' % (disk_mountpoint, str(filename))
return self.ssh_client.exec_command(
"dd if=/dev/zero of=%s bs=%s count=%s\n" %
(str(of), str(blocksize), str(count)))
def execute_resource_bomb(self):
'''By default executes :(){ :|:& };:'''
return self.ssh_client.exec_command(":(){ :|:& };:")
def stat_file(self, filepath):
sshresp = self.ssh_client.exec_command("stat %s\n" % str(filepath))
return sshresp
def get_file_size_bytes(self, filepath):
'''
Performs wc -c on path provided, returning the numerical count in
the result
'''
sshresp = self.ssh_client.exec_command("wc -c %s\n" % str(filepath))
result = re.search('^(.*)\s', sshresp)
try:
return result.groups()[0]
except:
return None
def get_file_md5hash(self, filepath):
'''
Performs binary mode md5sum of file and returns hash.
(md5sum -b <file>)
'''
sshresp = self.ssh_client.exec_command("md5sum -b %s\n" %
str(filepath))
result = re.search('^(.*)\s', sshresp)
try:
return result.groups()[0]
except:
return None