- 1. 常用操作
- 1.1 cup.mail 发送邮件类
- 1.2 cup.log 简单好用的cup log函数
- 1.3 cup.res 获取linux机器资源类相关信息
- 1.4 cup.shell 操作shell命令相关的package.
- 1.5 cup.util util类package - Rich Configuration/Context
- 1.6 cup.net 网络操作相关的package.
- 1.7 cup.decorators 进行函数、类修饰的module
- 1.8 cup.jenkinslib 与持续集成平台进行API操作
- 1.9 cup.exfile
- 1.10 cup.thirdp 第三方的库依赖支持
1. 常用操作
目前基础库包含如下大的Package[每类包含若干小的package及module].
排序按照常用->较常用->专用
1.1 cup.mail 发送邮件类
具体文档介绍
代码示例:
from cup import mail
mailer = mail.SmtpMailer(
'xxx@xxx.com', # sender
'xxxx.smtp.xxx.com', # smtp server
is_html=True # use html or not for email contents
)
mailer.sendmail(
[
'abc@baidu.com',
'xxx@baidu.com',
'yyy@baidu.com'
],
'test_img',
(
'testset <img src="cid:screenshot.png"></img>'
),
# attachment
[
'/home/work/screenshot.png',
'../abc.zip'
]
)
1.2 cup.log 简单好用的cup log函数
去除复杂log设置,即开即用
具体文档介绍
代码示例:
import logging
from cup import log
log.init_comlog(
'test',
log.DEBUG,
'/home/work/test/test.log',
log.ROTATION,
1024,
False
)
log.info('test xxx')
log.error('test critical')
# 支持重新设置日志level、日志文件位置、参数等,具体参数设置见文档
# Level: Datetime * [pid:threadid] [source.code:lineno] content
INFO: 2017-02-06 19:35:54,242 * [16561:140543940048640] [log.py:278] --------------------Log Initialized Successfully--------------------
INFO: 2017-02-06 19:35:54,242 * [16561:140543940048640] [cup_log_test.py:36] info
DEBUG: 2017-02-06 19:35:54,243 * [16561:140543940048640] [cup_log_test.py:40] debug
1.3 cup.res 获取linux机器资源类相关信息
举例, 获得当前机器cpu/mem/net统计信息。 进程资源信息(所有/proc/pid能拿到的资源信息) 具体文档介绍
代码示例:
# 1. 获取系统信息, 可以获取cpu mem network_speed等等
import cup
# 计算60内cpu的使用情况。
from cup.res import linux
cpuinfo = linux.get_cpu_usage(intvl_in_sec=60)
print cpuinfo.usr
# get_meminfo函数取得系统Mem信息的回返信息。 是个namedtuple
# total, available, percent, used, free, active, inactive, buffers, cached是她的属性
from cup.res import linux
meminfo = linux.get_meminfo()
print meminfo.total
print meminfo.available
# 获取系统其他信息, 如启动时间、cpu情况、网卡情况等
cup.res.linux.get_boottime_since_epoch()# Returns: 回返自从epoch以来的时间。 以秒记.
cup.res.linux.get_cpu_nums()[source] # 回返机器的CPU个数信息
cup.res.linux.get_disk_usage_all() # 拿到/目录的使用信息, 回返是一个字典
cup.res.linux.get_disk_info() # 拿到Linux系统的所有磁盘信息
cup.res.linux.get_cpu_usage(intvl_in_sec=1) # 取得下个intvl_in_sec时间内的CPU使用率信息 回返CPUInfo
cup.res.linux.get_kernel_version() # 拿到Linux系统的kernel信息, 回返是一个三元组 e.g.(‘2’, ‘6’, ‘32’):
cup.res.linux.get_meminfo() # 获得当前系统的内存信息, 回返MemInfo数据结构。
cup.res.linux.get_net_recv_speed(str_interface, intvl_in_sec) # 获得某个网卡在intvl_in_sec时间内的收包速度
cup.res.linux.get_net_through(str_interface) # 获取网卡的收发包的统计信息。 回返结果为(rx_bytes, tx_bytes)
cup.res.linux.get_net_transmit_speed(str_interface, intvl_in_sec=1) # 获得网卡在intvl_in_sec时间内的网络发包速度
print cup.res.linux.get_net_transmit_speed('eth1', 5)
cup.res.linux.get_swapinfo() # 获得当前系统的swap信息
cup.res.linux.net_io_counters() # net io encounters
# 2. 获取进程相关信息, 移植自psutil,可以获取/proc/xxxpid进程内的所有信息
# 也可以获取该进程下所有子进程相关的信息, 详见代码
get_connections(*args, **kwargs)
get_cpu_times(*args, **kwargs)
get_ext_memory_info(*args, **kwargs)
get_memory_info(*args, **kwargs)
get_memory_maps()
get_num_ctx_switches(*args, **kwargs)[source]
get_num_fds(*args, **kwargs)[source]
get_open_files(*args, **kwargs)[source]
get_process_cmdline(*args, **kwargs)[source]
get_process_create_time(*args, **kwargs)[source]
get_process_cwd(*args, **kwargs)[source]
get_process_exe()[source]
获得进程的Exe信息。 如果这个进程是个daemon,请使用get_process_name
get_process_gids(*args, **kwargs)[source]
get_process_io_counters(*args, **kwargs)[source]
get_process_name(*args, **kwargs)[source]
get_process_nice(*args, **kwargs)[source]
get_process_num_threads(*args, **kwargs)[source]
get_process_ppid(*args, **kwargs)[source]
get_process_status(*args, **kwargs)[source]
get_process_threads(*args, **kwargs)[source]
get_process_uids(*args, **kwargs)[source]
nt_mmap_ext alias of mmap
nt_mmap_grouped alias of mmap
1.4 cup.shell 操作shell命令相关的package.
任何shell操作都应该考虑超时机制!!!
否则可能导致某单个shell cmd 执行 hang 住, 整个线程/进程卡住. shell.ShellExec类就是为了该理念而设计, 支持超时auto-kill操作
具体文档介绍
代码示例
# 特色示例
# 1. 拥有超时控制的shell执行. 超时shell命令会被kill (SIGTERM)
import cup
shelltool = cup.shell.ShellExec()
print shelltool.run('/bin/ls', timeout=1)
# 2. 其他类,比如使用rm -rf删除某路径,获取文件MD5等
cup.shell.md5file(filename) # 计算一个文件的md5值。返回32位长的hex字符串。
cup.shell.kill9_byname(strname) # kill -9 process by name
cup.shell.del_if_exist(path) # 如果文件/目录/symlink存在则删除他们
# 3. 进行远程shell操作 (内部调用了pexpect)
# 具体参照 http://cupdoc.iobusy.com/cup.shell/#module-cup.shell.expect
# 其中exit_status为本地ssh命令退出码, remote_status为远程的退出码
1.5 cup.util util类package - Rich Configuration/Context
各类util类pacakge
- 富配置类型, 参见下面介绍
- 线程上下文
具体文档介绍
#1 支持类型丰富、带内嵌套、数组的文档 http://cupdoc.iobusy.com/cup.util/#cup.util.conf.Configure2Dict
# test.conf
# 第一层,Global layer, key:value
host: abc.com
port: 12345
# 1st layer [monitor]
@disk: sda
@disk: sdb
# 第二层配置 conf_dict['section']
[section]
# 支持数组 conf_dict['section']['disk'] =>是个一维数组
@disk: sda
@disk: sdb
# 支持层级数组 conf_dict['section']['ioutil'] => 是个一维数组
[@ioutil]
util: 80 # accessed by conf_dict['section']['ioutil'][0]['util']
[@ioutil]
util: 60
[monitor]
timeout: 100
regex: sshd
# 2nd layer that belongs to [monitor]
# 第三层配置 conf_dict['monitor']['timeout']
[.timeout]
# key:value in timeout
max: 100
# 3rd layer that belongs to [monitor] [timeout]
[..handler]
default: exit
# 3. 生成唯一码、唯一数等
# http://cupdoc.iobusy.com/cup.services/#module-cup.services.generator
1.6 cup.net 网络操作相关的package.
两个重要部分:
代码示例:
# 1. 获取路由信息
from cup.net import route
ri = route.RouteInfo()
print json.dumps(ri.get_route_by_ip('10.32.19.92'), indent=1)
print json.dumps(ri.get_routes(), indent=1)
{
"Use": "0",
"Iface": "eth1",
"Metric": "0",
"Destination": "10.0.0.0",
"Mask": "255.0.0.0",
"RefCnt": "0",
"MTU": "0",
"Window": "0",
"Gateway": "10.226.71.1",
"Flags": "0003",
"IRTT": "0"
}
[
{
"Use": "0",
"Iface": "eth1",
"Metric": "0",
"Destination": "10.226.71.0",
"Mask": "255.255.255.0",
"RefCnt": "0",
"MTU": "0",
"Window": "0",
"Gateway": "0.0.0.0",
"Flags": "0001",
"IRTT": "0"
},
# 2. 获取ip && 设置socket参数等
from cup import net
# set up socket params
net.set_sock_keepalive_linux(sock, 1, 3, 3)
net.set_sock_linger(sock)
net.set_sock_quickack(sock)
net.set_sock_reusable(sock, True) # port resuable
# get ipaddr of a network adapter/interface
print net.getip_byinterface('eth0')
print net.getip_byinterface('eth1')
print net.getip_byinterface('xgbe0') # 万兆网卡
# get ipaddr of a hostname
print net.get_hostip('abc.test.com')
1.6.2 异步网络消息通信库
具体文档介绍
http://cupdoc.iobusy.com/cup.net.async/#module-cup.net.async.msgcenter
具体介绍:
- 请移步左侧关于网络通信协议介绍
异步消息库属于专用且较为复杂的通信库,为高吞吐、高效网络通信场景使用,请注意你的使用场景是否匹配
1.7 cup.decorators 进行函数、类修饰的module
举例,一键变类为Singleton类。
1.8 cup.jenkinslib 与持续集成平台进行API操作
代码示例:
import cup
import cup.jenkinslib
############### quick start ###############
jenkins = cup.jenkinslib.Jenkins('cup.jenkins.baidu.com')
job = jenkins['cup_quick']
print job.name, job.last_stable_build_number, job.description
print job[5], job["lastSuccessBuild"], job.last_stable_build
qi = job.invoke()
build = qi.block_until_building()
print build.name, build.number, build.timestamp
try:
build.block_until_complete(timeout=20)
except cup.jenkinslib.RunTimeout as err:
print "timeout:", err
build.stop()
print build.duration, build.result, build.description
build.description = "new description"
jenkins.enable_ftp('ftp.baidu.com', 'cup', 'password', 22)
with build.ftp_artifacts as af:
af['artifacts_path'].download('./local_path')
1.9 cup.exfile
exfile 代表extension of file related objects. 目前支持:
- LockFile, 独占式锁文件
- TempFile,临时文件,在生命周期到期后自动删除
a. LockFile代码示例:
def test_sharedlockfile():
"""test lockfile"""
# shared lockfile
_lockfile = exfile.LockFile(LOCK_FILE, exfile.FILELOCK_SHARED)
ret = _lockfile.lock(blocking=False)
print ret
_lockfile2 = exfile.LockFile(LOCK_FILE, exfile.FILELOCK_SHARED)
ret = _lockfile2.lock(blocking=False)
print ret
_lockfile3 = exfile.LockFile(LOCK_FILE, exfile.FILELOCK_EXCLUSIVE)
unittest.expect_raise(
_lockfile3.lock,
err.LockFileError,
False
)
def test_exclusive_lockfile():
"""test exclusive lockfile"""
# shared lockfile
_lockfile = exfile.LockFile(LOCK_FILE, exfile.FILELOCK_EXCLUSIVE)
_lockfile.lock()
_lockfile2 = exfile.LockFile(LOCK_FILE, exfile.FILELOCK_EXCLUSIVE)
unittest.expect_raise(
_lockfile2.lock,
err.LockFileError,
blocking=False
)
_lockfile3 = exfile.LockFile(LOCK_FILE, exfile.FILELOCK_SHARED)
unittest.expect_raise(
_lockfile3.lock,
err.LockFileError,
blocking=False
)
b. TempFile示例
# 请注意在tmp变量生命周期结束后, 该temp文件会被立刻删除
def test_func():
tmp = exfile.TempFile()
tmp.write/read/etc
tmp.close()
1.10 cup.thirdp 第三方的库依赖支持
- httplib2
- requests
- MySQLdb (pymysql inside)
- pexpect