mirror of
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228 lines
6.9 KiB
Python
228 lines
6.9 KiB
Python
#!/usr/bin/python
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import re
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import sys
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import os
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import tempfile
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import urllib2
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import subprocess
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import tarfile
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import shutil
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import errno
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# To ensure it exists on the system
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import gzip
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#
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# Useful script for installing multiple versions of MongoDB on a machine
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# Only really tested/works on Linux.
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#
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def version_tuple(version):
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"""Returns a version tuple that can be used for numeric sorting
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of version strings such as '2.6.0-rc1' and '2.4.0'"""
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RC_OFFSET = -100
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version_parts = re.split(r'\.|-', version[0])
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if version_parts[-1].startswith("rc"):
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rc_part = version_parts.pop()
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rc_part = rc_part.split('rc')[1]
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# RC versions are weighted down to allow future RCs and general
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# releases to be sorted in ascending order (e.g., 2.6.0-rc1,
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# 2.6.0-rc2, 2.6.0).
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version_parts.append(int(rc_part) + RC_OFFSET)
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else:
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# Non-RC releases have an extra 0 appended so version tuples like
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# (2, 6, 0, -100) and (2, 6, 0, 0) sort in ascending order.
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version_parts.append(0)
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return tuple(map(int, version_parts))
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class MultiVersionDownloader :
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def __init__(self, install_dir, link_dir, platform):
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self.install_dir = install_dir
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self.link_dir = link_dir
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match = re.compile("(.*)\/(.*)").match(platform)
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self.platform = match.group(1)
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self.arch = match.group(2)
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self._links = None
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@property
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def links(self):
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if self._links is None:
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self._links = self.download_links()
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return self._links
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def download_links(self):
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href = "http://dl.mongodb.org/dl/%s/%s" \
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% (self.platform.lower(), self.arch)
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html = urllib2.urlopen(href).read()
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links = {}
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for line in html.split():
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match = re.compile("http:\/\/downloads\.mongodb\.org\/%s/mongodb-%s-%s-([^\"]*)\.tgz" \
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% (self.platform.lower(), self.platform.lower(), self.arch)).search(line)
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if match == None: continue
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link = match.group(0)
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version = match.group(1)
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links[version] = link
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return links
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def download_version(self, version):
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try:
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os.makedirs(self.install_dir)
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except OSError as exc:
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if exc.errno == errno.EEXIST and os.path.isdir(self.install_dir):
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pass
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else: raise
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urls = []
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for link_version, link_url in self.links.iteritems():
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if link_version.startswith(version):
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# If we have a "-" in our version, exact match only
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if version.find("-") >= 0:
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if link_version != version: continue
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elif link_version.find("-") >= 0:
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continue
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urls.append((link_version, link_url))
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if len(urls) == 0:
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raise Exception("Cannot find a link for version %s, versions %s found." \
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% (version, self.links))
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urls.sort(key=version_tuple)
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full_version = urls[-1][0]
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url = urls[-1][1]
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extract_dir = url.split("/")[-1][:-4]
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# only download if we don't already have the directory
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already_downloaded = os.path.isdir(os.path.join( self.install_dir, extract_dir))
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if already_downloaded:
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print "Skipping download for version %s (%s) since the dest already exists '%s'" \
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% (version, full_version, extract_dir)
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else:
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temp_dir = tempfile.mkdtemp()
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temp_file = tempfile.mktemp(suffix=".tgz")
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data = urllib2.urlopen(url)
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print "Downloading data for version %s (%s)..." % (version, full_version)
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with open(temp_file, 'wb') as f:
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f.write(data.read())
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print "Uncompressing data for version %s (%s)..." % (version, full_version)
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# Can't use cool with syntax b/c of python 2.6
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tf = tarfile.open(temp_file, 'r:gz')
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try:
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tf.extractall(path=temp_dir)
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except:
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tf.close()
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raise
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tf.close()
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temp_install_dir = os.path.join(temp_dir, extract_dir)
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shutil.move(temp_install_dir, self.install_dir)
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shutil.rmtree(temp_dir)
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os.remove(temp_file)
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self.symlink_version(version, os.path.abspath(os.path.join(self.install_dir, extract_dir)))
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def symlink_version(self, version, installed_dir):
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try:
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os.makedirs(self.link_dir)
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except OSError as exc:
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if exc.errno == errno.EEXIST and os.path.isdir(self.link_dir):
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pass
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else: raise
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for executable in os.listdir(os.path.join(installed_dir, "bin")):
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link_name = "%s-%s" % (executable, version)
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try:
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os.symlink(os.path.join(installed_dir, "bin", executable),\
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os.path.join(self.link_dir, link_name))
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except OSError as exc:
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if exc.errno == errno.EEXIST:
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pass
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else: raise
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CL_HELP_MESSAGE = \
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"""
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Downloads and installs particular mongodb versions (each binary is renamed to include its version)
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into an install directory and symlinks the binaries with versions to another directory.
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Usage: setup_multiversion_mongodb.py INSTALL_DIR LINK_DIR PLATFORM_AND_ARCH VERSION1 [VERSION2 VERSION3 ...]
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Ex: setup_multiversion_mongodb.py ./install ./link "Linux/x86_64" "2.0.6" "2.0.3-rc0" "2.0" "2.2" "2.3"
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Ex: setup_multiversion_mongodb.py ./install ./link "OSX/x86_64" "2.4" "2.2"
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After running the script you will have a directory structure like this:
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./install/[mongodb-osx-x86_64-2.4.9, mongodb-osx-x86_64-2.2.7]
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./link/[mongod-2.4.9, mongod-2.2.7, mongo-2.4.9...]
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You should then add ./link/ to your path so multi-version tests will work.
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Note: If "rc" is included in the version name, we'll use the exact rc, otherwise we'll pull the highest non-rc
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version compatible with the version specified.
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"""
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def parse_cl_args(args):
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def raise_exception(msg):
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print CL_HELP_MESSAGE
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raise Exception(msg)
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if len(args) == 0: raise_exception("Missing INSTALL_DIR")
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install_dir = args[0]
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args = args[1:]
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if len(args) == 0: raise_exception("Missing LINK_DIR")
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link_dir = args[0]
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args = args[1:]
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if len(args) == 0: raise_exception("Missing PLATFORM_AND_ARCH")
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platform = args[0]
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args = args[1:]
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if re.compile(".*\/.*").match(platform) == None:
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raise_exception("PLATFORM_AND_ARCH isn't of the correct format")
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if len(args) == 0: raise_exception("Missing VERSION1")
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versions = args
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return (MultiVersionDownloader(install_dir, link_dir, platform), versions)
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def main():
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downloader, versions = parse_cl_args(sys.argv[1:])
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for version in versions:
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downloader.download_version(version)
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if __name__ == '__main__':
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main()
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