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jip.py
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jip.py
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# Copyright (C) 2011 Sun Ning<classicning@gmail.com>
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
import os
import sys
import shutil
import urllib2
import logging
import re
import stat
import locale
import time
import hashlib
from xml.etree import ElementTree
from string import Template
from ConfigParser import ConfigParser
__author__ = 'Sun Ning <classicning@gmail.com>'
__version__ = '0.2dev'
__license__ = 'GPL'
logging.basicConfig(level=logging.INFO, format="\033[1m%(name)s\033[0m %(message)s")
logger = logging.getLogger('jip')
## check virtual environ and warn user
if 'VIRTUAL_ENV' in os.environ:
JYTHON_HOME = os.environ['VIRTUAL_ENV']
else:
logger.warn('Warning: no virtualenv detected, remember to activate it.')
if 'JYTHON_HOME' in os.environ:
JYTHON_HOME = os.environ['JYTHON_HOME']
else:
## fail back to use current directory
JYTHON_HOME = os.getcwd()
DEFAULT_JAVA_LIB_PATH = os.path.join(JYTHON_HOME, 'javalib')
if not os.path.exists(DEFAULT_JAVA_LIB_PATH):
os.mkdir(DEFAULT_JAVA_LIB_PATH)
MAVEN_LOCAL_REPOS = ('local', os.path.expanduser('~/.m2/repository'), 'local')
MAVEN_PUBLIC_REPOS = ('public', "http://repo1.maven.org/maven2/", 'remote')
class Artifact(object):
def __init__(self, group, artifact, version):
self.group = group
self.artifact = artifact
self.version = version
self.timestamp = None
self.build_number = None
def to_jip_name(self, pattern="$artifact-$version.$ext", ext="jar"):
template = Template(pattern)
filename = template.substitute({'group':self.group, 'artifact':self.artifact,
'version': self.version, 'ext': ext})
return filename
def to_maven_name(self, ext):
group = self.group.replace('.', '/')
return "%s/%s/%s/%s-%s.%s" % (group, self.artifact, self.version, self.artifact, self.version, ext)
def to_maven_snapshot_name(self, ext):
group = self.group.replace('.', '/')
version_wo_snapshot = self.version.replace('-SNAPSHOT', '')
return "%s/%s/%s/%s-%s-%s-%s.%s" % (group, self.artifact, self.version, self.artifact, version_wo_snapshot,
self.timestamp, self.build_number, ext)
def __eq__(self, other):
if isinstance(other, Artifact):
return other.group == self.group and other.artifact == self.artifact and other.version == self.version
else:
return False
def __str__(self):
return "%s:%s:%s" % (self.group, self.artifact, self.version)
def is_snapshot(self):
return self.version.find('SNAPSHOT') > 0
class MavenRepos(object):
def __init__(self, name, uri):
self.name = name
self.uri = uri
def get_artifact_uri(self, artifact, ext):
pass
def download_jar(self, artifact, local_path=DEFAULT_JAVA_LIB_PATH):
""" download or copy file to local path, raise exception when failed """
pass
def download_pom(self, artifact):
""" return a content string """
pass
def last_modified(self, artifact):
""" return last modified timestamp """
pass
def download_check_sum(self, checksum_type, origin_file_name):
""" return pre calculated checksum value, only avaiable for remote repos """
pass
class MavenFileSystemRepos(MavenRepos):
def __init__(self, name, uri):
MavenRepos.__init__(self, name, uri)
def get_artifact_uri(self, artifact, ext):
maven_name = artifact.to_maven_name(ext)
maven_file_path = os.path.join(self.uri,maven_name)
return maven_file_path
def download_jar(self, artifact, local_path=DEFAULT_JAVA_LIB_PATH):
maven_file_path = self.get_artifact_uri(artifact, 'jar')
logger.info("[Checking] jar package from %s" % self.name)
if os.path.exists(maven_file_path):
local_jip_path = local_path+"/"+artifact.to_jip_name()
logger.info("[Downloading] %s" % maven_file_path)
shutil.copy(maven_file_path, local_jip_path)
logger.info("[Finished] %s completed" % local_jip_path)
else:
logger.error("[Error] File not found %s" % maven_file_path)
raise IOError('File not found:' + maven_file_path)
def download_pom(self, artifact):
maven_file_path = self.get_artifact_uri(artifact, 'pom')
logger.info('[Checking] pom file %s'% maven_file_path)
if os.path.exists(maven_file_path):
pom_file = open(maven_file_path, 'r')
data = pom_file.read()
pom_file.close()
return data
else:
logger.info('[Skipped] pom file not found at %s' % maven_file_path)
return None
def last_modified(self, artifact):
maven_file_path = self.get_artifact_uri(artifact, 'pom')
if os.path.exists(maven_file_path):
last_modify = os.stat(maven_file_path)[stat.ST_MTIME]
return last_modify
else:
return None
class MavenHttpRemoteRepos(MavenRepos):
def __init__(self, name, uri):
MavenRepos.__init__(self, name, uri)
self.pom_cache = {}
def download_jar(self, artifact, local_path=DEFAULT_JAVA_LIB_PATH):
maven_path = self.get_artifact_uri(artifact, 'jar')
logger.info('[Downloading] jar from %s' % maven_path)
f = urllib2.urlopen(maven_path)
data = f.read()
f.close()
local_jip_path = local_path+"/"+artifact.to_jip_name()
local_f = open(local_jip_path, 'w')
local_f.write(data)
local_f.close()
logger.info('[Finished] %s downloaded ' % maven_path)
def download_pom(self, artifact):
if artifact in self.pom_cache:
return self.pom_cache[artifact]
if artifact.is_snapshot():
snapshot_info = self.get_snapshot_info(artifact)
if snapshot_info is not None:
ts, bn = snapshot_info
artifact.timestamp = ts
artifact.build_number = bn
maven_path = self.get_artifact_uri(artifact, 'pom')
try:
logger.info('[Checking] pom file %s'% maven_path)
f = urllib2.urlopen(maven_path)
data = f.read()
f.close()
## cache
self.pom_cache[artifact] = data
return data
except urllib2.HTTPError:
logger.info('[Skipped] Pom file not found at %s'% maven_path)
return None
def get_artifact_uri(self, artifact, ext):
if not artifact.is_snapshot():
maven_name = artifact.to_maven_name(ext)
else:
maven_name = artifact.to_maven_snapshot_name(ext)
maven_path = self.uri + maven_name
return maven_path
def get_snapshot_info(self, artifact):
metadata_path = self.get_metadata_path(artifact)
try:
f = urllib2.urlopen(metadata_path)
data = f.read()
f.close()
eletree = ElementTree.fromstring(data)
timestamp = eletree.findtext('versioning/snapshot/timestamp')
build_number = eletree.findtext('versioning/snapshot/buildNumber')
return (timestamp, build_number)
except urllib2.HTTPError:
return None
def get_metadata_path(self, artifact):
group = artifact.group.replace('.', '/')
metadata_path = "%s/%s/%s/%s/maven-metadata.xml" % (self.uri, group,
artifact.artifact, artifact.version)
return metadata_path
def last_modified(self, artifact):
metadata_path = self.get_metadata_path(artifact)
try:
fd = urllib2.urlopen(metadata_path)
if 'last-modified' in fd.headers:
ts = fd.headers['last-modified']
fd.close()
locale.setlocale(locale.LC_TIME, 'en_US')
last_modified = time.strptime(ts, '%a, %d %b %Y %H:%M:%S %Z')
return time.mktime(last_modified)
else:
fd.close()
return 0
except urllib2.HTTPError:
return None
def download_check_sum(self, checksum_type, origin_file_name):
""" return pre calculated checksum value, only avaiable for remote repos """
checksum_url = origin_file_name + "." + checksum_type
try:
f = urllib2.urlopen(checksum_url)
data = f.read()
f.close()
return data
except urllib2.HTTPError:
return None
def checksum(self, filepath, checksum_type):
if checksum_type == 'md5':
hasher = hashlib.md5()
elif checksum_type == 'sha1':
hasher = hashlib.sha1()
buf_size = 1024*8
file_to_check = file(filepath, 'r')
buf = file_to_check.read(buf_size)
while len(buf) > 0:
hasher.update(buf)
buf = file_to_check.read(buf_size)
file_to_check.close()
return hasher.hexdigest()
def _create_repos(name, uri, repos_type):
if repos_type == 'local':
return MavenFileSystemRepos(name, uri)
if repos_type == 'remote':
return MavenHttpRemoteRepos(name, uri)
def _load_config():
config_file_path = os.path.join(JYTHON_HOME, '.jip')
if not os.path.exists(config_file_path):
config_file_path = os.path.expanduser('~/.jip')
if os.path.exists(config_file_path):
config = ConfigParser()
config.read(config_file_path)
repos = []
## only loop section starts with "repos:"
repos_sections = filter(lambda x:x.startswith("repos:"), config.sections())
for section in repos_sections:
name = section.split(':')[1]
uri = config.get(section, "uri")
rtype = config.get(section, "type")
repos.append((name, uri, rtype))
return repos
else:
return None
## allow custom repository configuration from a config file
MAVEN_REPOS = map(lambda x: _create_repos(*x),
_load_config() or [MAVEN_LOCAL_REPOS, MAVEN_PUBLIC_REPOS])
class Pom(object):
def __init__(self, pom_string):
self.pom_string = pom_string
self.eletree = None
self.properties = None
self.dep_mgmt = None
self.parent = None
def get_element_tree(self):
if self.eletree is None:
## we use this dirty method to remove namesapce attribute so that elementtree will use default empty namespace
pom_string = re.sub(r"<project(.|\s)*?>", '<project>', self.pom_string, 1)
self.eletree = ElementTree.fromstring(pom_string)
return self.eletree
def get_parent_pom(self):
if self.parent is not None:
return self.parent
eletree = self.get_element_tree()
parent = eletree.find("parent")
if parent is not None:
parent_group_id = parent.findtext("groupId")
parent_artifact_id = parent.findtext("artifactId")
parent_version_id = parent.findtext("version")
artifact = Artifact(parent_group_id, parent_artifact_id, parent_version_id)
global MAVEN_REPOS
for repos in MAVEN_REPOS:
parent_pom = repos.download_pom(artifact)
if parent_pom is not None:
break
if parent_pom is not None:
self.parent = Pom(parent_pom)
return self.parent
else:
logger.error("cannot find parent pom %s" % parent_pom)
sys.exit(1)
else:
return None
def get_dependency_management(self):
if self.dep_mgmt is not None:
return self.dep_mgmt
dependency_management_version_dict = {}
parent = self.get_parent_pom()
if parent is not None:
dependency_management_version_dict.update(parent.get_dependency_management())
properties = self.get_properties()
eletree = self.get_element_tree()
dependency_management_dependencies = eletree.findall("dependencyManagement/dependencies/dependency")
for dependency in dependency_management_dependencies:
group_id = self.__resolve_placeholder(dependency.findtext("groupId"), properties)
artifact_id = self.__resolve_placeholder(dependency.findtext("artifactId"), properties)
version = self.__resolve_placeholder(dependency.findtext("version"), properties)
scope = dependency.findtext("scope")
if scope is not None and scope == 'import':
artifact = Artifact(group_id, artifact_id, version)
global MAVEN_REPOS
for repos in MAVEN_REPOS:
import_pom = repos.download_pom(artifact)
if import_pom is not None:
break
if import_pom is not None:
import_pom = Pom(import_pom)
dependency_management_version_dict.update(import_pom.get_dependency_management())
else:
logger.error("[Error] can not find dependency management import: %s" % artifact)
sys.exit(1)
else:
## will also remember scope for scope inheritance
dependency_management_version_dict[(group_id, artifact_id)] = (version, scope)
self.dep_mgmt = dependency_management_version_dict
return dependency_management_version_dict
def get_dependencies(self):
dep_mgmt = self.get_dependency_management()
props = self.get_properties()
eletree = self.get_element_tree()
runtime_dependencies = []
dependencies = eletree.findall("dependencies/dependency")
for dependency in dependencies:
# resolve placeholders in pom (properties and pom references)
group_id = self.__resolve_placeholder(dependency.findtext("groupId"), props)
artifact_id = self.__resolve_placeholder(dependency.findtext("artifactId"), props)
version = dependency.findtext("version")
if version is not None:
version = self.__resolve_placeholder(version, props)
scope = dependency.findtext("scope")
optional = dependency.findtext("optional")
# runtime dependency
if optional is None or optional == 'false':
if version is None:
version = dep_mgmt[(group_id, artifact_id)][0]
if scope is None:
## bug fix, scope is an optional attribute
if (group_id, artifact_id) in dep_mgmt:
scope = dep_mgmt[(group_id, artifact_id)][1]
if scope in (None, 'runtime', 'compile'):
artifact = Artifact(group_id, artifact_id, version)
runtime_dependencies.append(artifact)
logger.debug('Find dependencies: %s'% runtime_dependencies)
return runtime_dependencies
def get_properties(self):
if self.properties is not None:
return self.properties
eletree = self.get_element_tree()
# parsing in-pom properties
properties = {}
properties_ele = eletree.find("properties")
if properties_ele is not None:
prop_eles = properties_ele.getchildren()
for prop_ele in prop_eles:
if prop_ele.tag == 'property':
name = prop_ele.get("name")
value = prop_ele.get("value")
else:
name = prop_ele.tag
value = prop_ele.text
properties[name] = value
parent = self.get_parent_pom()
if parent is not None:
properties.update(parent.get_properties())
## pom specific elements
groupId = eletree.findtext('groupId')
artifactId = eletree.findtext('artifactId')
version = eletree.findtext('version')
if version is None:
version = eletree.findtext('parent/version')
properties["project.groupId"] = groupId
properties["project.artifactId"] = artifactId
properties["project.version"] = version
properties["pom.groupId"] = groupId
properties["pom.artifactId"] = artifactId
properties["pom.version"] = version
self.properties = properties
return properties
def __resolve_placeholder(self, text, properties):
def subfunc(matchobj):
key = matchobj.group(1)
if key in properties:
return properties[key]
else:
return matchobj.group(0)
return re.sub(r'\$\{(.*?)\}', subfunc, text)
def _install(*artifacts):
global MAVEN_REPOS
## ready set contains artifact jip file names
ready_set = os.listdir(DEFAULT_JAVA_LIB_PATH)
## dependency_set and installed_set contain artifact objects
dependency_set = set()
installed_set = set()
for a in artifacts:
dependency_set.add(a)
while len(dependency_set) > 0:
artifact = dependency_set.pop()
if artifact in installed_set:
continue
found = False
for repos in MAVEN_REPOS:
pom = repos.download_pom(artifact)
## find the artifact
if pom is not None:
if not artifact.to_jip_name() in ready_set:
repos.download_jar(artifact)
installed_set.add(artifact)
ready_set.append(artifact.to_jip_name())
found = True
pom_obj = Pom(pom)
more_dependencies = pom_obj.get_dependencies()
for d in more_dependencies: dependency_set.add(d)
break
if not found:
logger.error("[Error] Artifact not found: %s", artifact)
sys.exit(1)
def install(artifact_identifier):
"""Install a package with maven coordinate "groupId:artifactId:version" """
group, artifact, version = artifact_identifier.split(":")
artifact_to_install = Artifact(group, artifact, version)
_install(artifact_to_install)
logger.info("[Finished] %s successfully installed" % artifact_identifier)
def clean():
""" Remove all downloaded packages """
logger.info("[Deleting] remove java libs in %s" % DEFAULT_JAVA_LIB_PATH)
shutil.rmtree(DEFAULT_JAVA_LIB_PATH)
logger.info("[Finished] all downloaded file erased")
## another resolve task, allow jip to resovle dependencies from a pom file.
def resolve(pomfile):
""" Resolve and download dependencies in pom file """
pomfile = open(pomfile, 'r')
pomstring = pomfile.read()
pom = Pom(pomstring)
dependencies = pom.get_dependencies()
_install(*dependencies)
logger.info("[Finished] all dependencies resolved")
def update(artifact_id):
""" update a snapshot artifact, check for new version """
group, artifact, version = artifact_id.split(":")
artifact = Artifact(group, artifact, version)
global MAVEN_REPOS
if artifact.is_snapshot():
installed_file = os.path.join(DEFAULT_JAVA_LIB_PATH, artifact.to_jip_name())
if os.path.exists(installed_file):
lm = os.stat(installed_file)[stat.ST_MTIME]
## find the repository contains the new release
selected_repos = None
for repos in MAVEN_REPOS:
ts = repos.last_modified(artifact)
if ts is not None and ts > lm :
lm = ts
selected_repos = repos
if selected_repos is not None:
## download new jar
selected_repos.download_jar(artifact)
## try to update dependencies
pomstring = selected_repos.download_pom(artifact)
pom = Pom(pomstring)
dependencies = pom.get_dependencies()
_install(*dependencies)
logger.info('[Finished] Artifact snapshot %s updated' % artifact_id)
else:
logger.error('[Error] Artifact not installed: %s' % artifact)
sys.exit(1)
else:
logger.error('[Error] Can not update non-snapshot artifact')
return
commands = {
"install": install,
"clean": clean,
"resolve": resolve,
"update": update,
}
def parse_cmd(argus):
if len(argus) > 0:
cmd = argus[0]
values = argus[1:]
return (cmd, values)
else:
return (None, None)
def print_help():
print "Available commands:"
for name, func in commands.items():
print "\t%s\t\t%s" % (name, func.__doc__)
def main():
logger.debug("sys args %s" % sys.argv)
args = sys.argv[1:]
cmd, values = parse_cmd(args)
if cmd in commands:
commands[cmd](*values)
else:
print_help()
if __name__ == "__main__":
main()