108 lines
4.0 KiB
Python
108 lines
4.0 KiB
Python
#!/usr/bin/env python
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# Copyright 2015 The Kubernetes Authors All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import os
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import shlex
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import subprocess
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from path import path
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def run(command, shell=False):
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""" A convience method for executing all the commands. """
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print(command)
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if shell is False:
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command = shlex.split(command)
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output = subprocess.check_output(command, shell=shell)
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print(output)
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return output
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class KubernetesInstaller():
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"""
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This class contains the logic needed to install kuberentes binary files.
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"""
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def __init__(self, arch, version, output_dir):
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""" Gather the required variables for the install. """
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# The kubernetes-master charm needs certain commands to be aliased.
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self.aliases = {'kube-apiserver': 'apiserver',
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'kube-controller-manager': 'controller-manager',
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'kube-proxy': 'kube-proxy',
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'kube-scheduler': 'scheduler',
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'kubectl': 'kubectl',
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'kubelet': 'kubelet'}
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self.arch = arch
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self.version = version
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self.output_dir = path(output_dir)
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def build(self, branch):
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""" Build kubernetes from a github repository using the Makefile. """
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# Remove any old build artifacts.
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make_clean = 'make clean'
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run(make_clean)
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# Always checkout the master to get the latest repository information.
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git_checkout_cmd = 'git checkout master'
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run(git_checkout_cmd)
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# When checking out a tag, delete the old branch (not master).
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if branch != 'master':
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git_drop_branch = 'git branch -D {0}'.format(self.version)
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print(git_drop_branch)
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rc = subprocess.call(git_drop_branch.split())
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if rc != 0:
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print('returned: %d' % rc)
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# Make sure the git repository is up-to-date.
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git_fetch = 'git fetch origin {0}'.format(branch)
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run(git_fetch)
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if branch == 'master':
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git_reset = 'git reset --hard origin/master'
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run(git_reset)
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else:
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# Checkout a branch of kubernetes so the repo is correct.
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checkout = 'git checkout -b {0} {1}'.format(self.version, branch)
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run(checkout)
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# Create an environment with the path to the GO binaries included.
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go_path = ('/usr/local/go/bin', os.environ.get('PATH', ''))
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go_env = os.environ.copy()
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go_env['PATH'] = ':'.join(go_path)
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print(go_env['PATH'])
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# Compile the binaries with the make command using the WHAT variable.
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make_what = "make all WHAT='cmd/kube-apiserver cmd/kubectl "\
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"cmd/kube-controller-manager plugin/cmd/kube-scheduler "\
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"cmd/kubelet cmd/kube-proxy'"
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print(make_what)
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rc = subprocess.call(shlex.split(make_what), env=go_env)
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def install(self, install_dir=path('/usr/local/bin')):
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""" Install kubernetes binary files from the output directory. """
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if not install_dir.isdir():
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install_dir.makedirs_p()
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# Create the symbolic links to the real kubernetes binaries.
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for key, value in self.aliases.iteritems():
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target = self.output_dir / key
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if target.exists():
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link = install_dir / value
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if link.exists():
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link.remove()
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target.symlink(link)
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else:
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print('Error target file {0} does not exist.'.format(target))
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exit(1)
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