def start(self, run_path):
# 启动新的服务.
cmd = 'cd %s; cd program; sh __start_all.sh' % (run_path)
ret = pyshell.remote_shell(cmd, warn_only=True)
if ret.return_code != 0:
raise Exception('start failed')
def stop(self, run_path):
cmd = 'cd %s; if [ -d program ] ;then cd program; sh __stop_all.sh; fi' % (
run_path)
ret = pyshell.remote_shell(cmd, warn_only=True)
def deploy(self, program_path, deploy_env):
"""
@program_path: 程序在本地的地址.
@env: 要部署环境
pre-condition:当前工作目录处在要部署的模块下.
从octopus.prj文件中读取依赖哪些库.
从METAINFO/deploy.inf中读取依赖的版本，如果没有该文件，则都用最新版本(build号最大的).
从deploy.conf文件中读取部署到哪里
拷贝模块自身到目标位置
拷贝依赖模块到目标位置（这个不好弄，依赖模块的路径怎么设定定?)
在远程机器上运行setup 脚本
在本机运行冒烟测试脚本(smoketest)
"""
print 'start deploy ' + program_path + ', env=' + deploy_env
REMOTE_PROGRAM_BASE = '~/program'
REMOTE_RUN_BASE = '~/service'
program_info = ProgramInfo(program_path)
depends = program_info.get_depends()
build_no = program_info.get_buildmeta().build_number
scripts = program_info.get_scripts()
# 读取部署位置文件,将文件拷贝过去.
deploy_conf_file = program_path + '/config/%s/deploy.conf' % (deploy_env)
deploy_conf = pyetc.load(deploy_conf_file, deploy_schema.ENV)
instances = deploy_conf.CONFIG['instance']
for instance in instances:
instance_name = instance['user'] + '@' + instance['host'] + ':'
instance_name = instance_name + instance['name']
fabric_env.host_string = instance['host']
print '=================start deploy %s =========' % (instance_name)
fabric_env.user = instance['user']
# 生成模版文件，打包成tar.gz.
homedir = CITool.get_homedir(pyshell.remote_shell)
run_path = REMOTE_RUN_BASE + '/' + instance['name']
run_path = CITool.normalize_path(run_path, homedir)
print run_path
remote_program_path = REMOTE_PROGRAM_BASE + '/' + instance['name']
if build_no > 0:
remote_program_path = '%s-%d' % (remote_program_path, build_no)
else:
# 如果取不到build号，则取当前时间.
cur_time = time.strftime('%Y%m%d%H%M%S', time.localtime(time.time()))
remote_program_path = '%s-%s' % (remote_program_path, cur_time)
shell_ret = pyshell.remote_shell('if [ -d %s ] ;then exit 1;fi' % (
remote_program_path), warn_only=True)
if shell_ret.return_code == 0:
# 目录不存在，则重新打包拷贝.
pkg_file_full_path = self.make_package(instance, program_info,
program_path, deploy_env, run_path, remote_program_path)
run('mkdir -p %s' % (remote_program_path))
put(pkg_file_full_path, remote_program_path)
local('rm -f ' + pkg_file_full_path)
run('cd %s && tar -zxf %s' % (
remote_program_path, os.path.basename(pkg_file_full_path)))
# 安装依赖的模块.
print '===================<<%s>> start install depends========' % (
instance_name)
self.install_depends(depends, 'runtime', {'host':instance['host'],
'user':instance['user']})
# 按顺序执行脚本 install, stop, switch, start,check
# install -
print '===================<<%s>> start scripts:install========' % (
instance_name)
try:
self.run_script(instance, 'install', scripts,
remote_program_path, pyshell.remote_shell)
except Exception, e:
print 'step=install host=%s program=%s e=%s' % (
instance['host'], remote_program_path, e)
raise e
print '===================<<%s>> stop ========' % ( instance_name )
self.stop(run_path)
# switch - unlink link, ln -s install_path link
print '===================<<%s>> switch link========' % (
instance_name)
run('[ -d %s ] || mkdir -p %s' % (run_path, run_path))
run(('cd %s ; if [ -h program_old ]; then mv program_old program_old2;fi;'
+' if [ -h program ] ;then mv program program_old; fi ;'
+' ln -s %s program') % (
run_path, remote_program_path))
# 启动新的
print '===================<<%s>> start ========' % (
instance_name)
try:
self.start(run_path)
# 进行线上检查
print '===================<<%s>> check ========' % (
instance_name)
self.run_script(instance, 'check', scripts, remote_program_path,
run_path)
# 删除program_old2
print '===================<<%s>> delete old version ========' % (
instance_name)
ret = pyshell.remote_shell(('cd %s;'
+' if [ -h program_old2 ] ;then '
+'old2=`readlink program_old2`;'
+'old=`readlink program_old`;'
+'pp=`readlink program`;'
+ ' if [ "$old2" = "$old" -o "$old2" = "$pp" ];then rm -f program_old2;'
+'else rm -rf $old2 program_old2; fi;fi') % (run_path))
except Exception,e:
# 如果失败，回滚.回滚怎么重启老版本的服务？octopus.prj文件中的脚本可能发生了变化.
# 解决方案1:
# 1) 脚本不在octopus中配置，必须写死,但是解决不了多role问题
# 2) 或者重新读远程目录的octopus.prj文件, 仍然解决不了多role问题。
# 3) 必须生成一个部署meta文件,放在METAINFO/deploy.inf中，将role信息写入
# 另外依赖库怎么办？需要重新安装一遍吗？
# 看来最好的办法还是将所有的依赖库都放在自己的目录下.
# 1.一些第三方库整个维持一个版本(即depend_third每个程序只能有一个版本)
# 2. 模块下有个lib目录，放依赖的库和程序.
# 这样回滚的时候只需要修改链接就行.
print e
print '===================<<%s>> rollback ========' % (
instance_name)
# stop 正在部署的服务
self.stop(run_path)
run(('cd %s ; if [ -h program_fail ];then old_fail=`readlink program_fail`;pp=`readlink program`;'
+' if [ "$old_fail" = "$pp" ];then unlink program_fail; else rm -rf $old_fail program_fail;fi;'
+'fi; mv program program_fail; '
+'if [ -h program_old ] ; then mv program_old program; fi;'
+'if [ -h program_old2 ];then mv program_old2 program_old; fi') % (run_path))
# 切换目录,启动老版本的服务
try:
self.start(run_path)
except Exception, e:
print 'rollback faied ,reson=%s' % (e)
