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# -*- coding: utf-8 -*-
# Copyright 2004-2023 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
from .OutputFormatter import *
from .Package import *
from .Virtual import *
from .VM import *
from .Errors import *
from itertools import chain
import sys
import re
import os
from os.path import basename, dirname
from glob import glob
class EnvironmentManager(object):
"""This is the central class, which manages all information from the 'environment'"""
def __init__(self, root='', eprefix=''):
self.all_packages_loaded = False
self.packages = {}
self.virtuals = {}
self.virtuals_pref = None
self.virtual_machines = None
self.active_vm = None
self.eprefix = eprefix
self.eroot = root + eprefix
# Location of the vm env files
self.vms_path = self.eroot + '/usr/share/java-config-2/vm'
# Location of the package env files to load
self.pkg_path = self.eroot + '/usr/share/%s/package.env'
self.virtual_path = self.eroot + '/usr/share/java-config-2/virtuals/'
self.system_config_path = self.eroot + "/etc/java-config-2/"
def load_vms(self):
"""Load all the vm files, and check for correctness"""
self.virtual_machines = {}
if os.path.isdir(self.vms_path):
count = 1
filelist = os.listdir(self.vms_path)
filelist.sort()
for file in filelist:
conf = os.path.join(self.vms_path,file)
vm = None
try:
vm = VM(conf)
except (InvalidConfigError, PermissionError):
continue
except InvalidVMError as ex:
printer = OutputFormatter()
printer._printAlert("Invalid vm configuration file found: %s\nJava-config 2 requires some new variables, please update all your jdk/jre: file\n(%s)" % ( conf, ex ))
continue
self.virtual_machines[count] = vm
count += 1
def load_package(self, name):
try:
name = name.replace(':', '-')
pkg = Package(name, sorted (glob (self.pkg_path % name ), reverse=True)[0])
self.packages[name] = pkg
return pkg
except (IndexError, InvalidConfigError):
try:
#Try load Virtual instead of Package.
pkg = Virtual( name, self, self.virtual_path + name )
self.packages[name] = pkg
self.virtuals[name] = pkg
return pkg
except InvalidConfigError:
raise UnexistingPackageError(name)
def load_packages(self):
for package in iter(glob(self.pkg_path % "*" )):
name = basename(dirname(package))
if name in self.packages:
continue
self.packages[name] = Package(name, package)
self.all_packages_loaded = True
for virtual in iter(glob(self.virtual_path + '*')):
virt = Virtual(basename(virtual), self, virtual)
self.packages[virt.name()] = virt
self.virtuals[virt.name()] = virt
def get_virtuals_pref(self):
if self.virtuals_pref is None:
self.load_virtuals_pref()
return self.virtuals_pref
def load_virtuals_pref(self):
self.virtuals_pref = EnvFileParser(self.system_config_path + "virtuals")
def load_active_vm(self):
vm_name = os.getenv("GENTOO_VM")
if vm_name:
vm = self.get_vm(vm_name)
if vm:
self.active_vm = vm
return vm
for link in self.vm_links():
if os.path.islink(link):
vm_name = basename(os.readlink(link))
vm = self.get_vm(vm_name)
if vm:
self.active_vm = vm
return vm
raise InvalidVMError("Unable to determine valid Java VM!")
def set_active_vm(self, vm):
self.active_vm = vm
def get_active_vm(self):
if self.active_vm is None:
self.load_active_vm()
return self.active_vm
def get_virtual_machines(self):
if self.virtual_machines is None:
self.load_vms()
return self.virtual_machines
def find_vm(self, name):
found = []
for id, vm in self.get_virtual_machines().items():
# match either exact given string or the unversioned part - bug #288695
if not name or len(name) == 0:
found.append(vm)
elif vm.name() == name:
found.append(vm)
elif vm.name() == (name + "-" + vm.version()):
found.append(vm)
return found
def get_package(self, pkgname):
try:
return self.packages[pkgname]
except KeyError:
if not self.all_packages_loaded:
return self.load_package(pkgname)
def get_packages(self):
"""
Returns a dictionary of Packages indexed by their names.
For java-config-3 we probably want to change this to return
the list of packages directly.
"""
if not self.all_packages_loaded:
self.load_packages()
return self.packages
def get_virtuals(self):
if self.virtuals is None:
self.load_packages()
return self.virtuals
def get_virtual(self, virtname):
return self.get_package(virtname)
def query_packages(self, packages, query):
results = []
for package in packages:
pkg = self.get_package(package)
if pkg:
value = pkg.query(query)
if value:
results.append(value)
else:
raise UnexistingPackageError(package)
return results
def get_vm(self, machine):
vm_list = self.get_virtual_machines()
selected = None
for count in iter(vm_list):
vm = vm_list[count]
if str(machine).isdigit():
if int(machine) is count:
return vm
else:
# Check if the vm is specified via env file
if machine == vm.filename():
return vm
# Check if the vm is specified by name
if machine == vm.name():
return vm
# Check if the vm is specified via JAVA_HOME
if machine == vm.query('JAVA_HOME'):
return vm
# Check if vm is specified by partial name
if vm.name().startswith(machine):
selected = vm
if selected:
return selected
else:
return None
def create_env_entry(self, vm, stream, render="%s=%s\n"):
stream.write("# Autogenerated by java-config\n")
stream.write("# Java Virtual Machine: %s\n\n" % vm.query('VERSION'))
try:
ENV_VARS = vm.query('ENV_VARS')
for (item, value) in vm.get_config().items():
if item in ENV_VARS:
stream.write(render % (item, value))
except IOError:
raise PermissionError
except EnvironmentUndefinedError:
raise EnvironmentUndefinedError
def vm_links(self):
# Don't try to use user-vm if HOME is undefined
if os.environ.get('HOME') == None:
return [ self.system_vm_link() ]
else:
return [ self.user_vm_link(), self.system_vm_link() ]
def user_vm_link(self):
return os.path.join(os.environ.get('HOME'), '.gentoo' + self.eprefix + '/java-config-2/current-user-vm')
def system_vm_link(self):
return self.eroot + '/etc/java-config-2/current-system-vm'
def system_vm_name(self):
link = self.system_vm_link()
if os.path.islink(link):
return basename(os.readlink(link))
else:
return None
def add_path_elements(self, elements, path):
if elements:
for p in elements.split(':'):
if p != '' and p not in path:
path.append(p)
def build_path(self, pkgs, query):
path = []
for lpath in self.query_packages(pkgs, query):
self.add_path_elements(lpath, path)
return path
def get_pkg_deps(self, pkg):
"""
Returns list of package's deps and optional deps.
Filters out optional deps that are not present.
"""
deps = []
if hasattr(pkg, 'get_packages') and pkg.use_all_available():
vps = pkg.get_packages()
for vp in vps:
try:
vp_pkg = self.get_package(vp)
vp_deps = self.get_pkg_deps(vp_pkg)
for dep in vp_deps:
deps.append(dep)
except UnexistingPackageError:
continue
else:
deps = pkg.deps();
for opt_dep in pkg.opt_deps():
try:
self.get_package(opt_dep[-1])
deps.append(opt_dep)
except UnexistingPackageError:
continue
return deps
def add_dep_classpath(self, pkg, dep, classpath):
pkg_cp = pkg.classpath()
if pkg_cp:
if not dep or len(dep) == 1:
self.add_path_elements(pkg_cp, classpath)
else:
for cp in pkg_cp.split(':'):
if basename(cp) == dep[0] and cp not in classpath:
classpath.append(cp)
def build_dep_path(self, pkgs, query, missing_deps):
path = []
unresolved = set()
resolved = set()
for p in pkgs[:]:
pkg = self.get_package(p)
if pkg:
pkgs.remove(p)
lpath = pkg.query(query)
self.add_path_elements(lpath, path)
unresolved.add(pkg)
while len(unresolved) > 0:
pkg = unresolved.pop()
resolved.add(pkg)
if query != "CLASSPATH":
lpath = pkg.query(query)
self.add_path_elements(lpath, path)
for dep in self.get_pkg_deps(pkg):
p = self.get_package(dep[-1])
if p:
if p not in resolved:
unresolved.add(p)
if query == "CLASSPATH":
self.add_dep_classpath(p, dep, path)
else:
missing_deps.add(dep[-1])
return path
def add_pkg_env_vars(self, pkg, env):
"""
Adds variables declared in `pkg`'s package.env via ENV_VARS
into the dictionary `env`
"""
env_vars = pkg.query("ENV_VARS")
if (env_vars):
for var in env_vars.split(' '):
val = pkg.query(var)
assert val
if (var not in env):
env[var] = val
def build_dep_env_vars(self, pkgs, missing_deps):
"""
Returns a dictionary of variables declared via ENV_VARS in
package.env of all packages in list `pkgs` and all dependencies.
Encountered missing dependencies are recorded in `missing_deps`.
"""
env = {}
unresolved = set()
resolved = set()
for p in pkgs:
pkg = self.get_package(p)
if pkg:
if hasattr(pkg, 'is_vm') and pkg.is_vm():
continue
pkgs.remove(p)
unresolved.add(pkg)
while len(unresolved) > 0:
pkg = unresolved.pop()
resolved.add(pkg)
self.add_pkg_env_vars(pkg, env)
for dep in self.get_pkg_deps(pkg):
p = self.get_package(dep[-1])
if p:
if p not in resolved:
if hasattr(p, 'is_vm') and p.is_vm():
continue
unresolved.add(p)
else:
missing_deps.add(dep[-1])
return env
def have_provider(self, virtuals, virtualMachine, versionManager):
result=True
storeVM = self.get_active_vm()
self.set_active_vm(virtualMachine)
try:
for virtualKey in virtuals.split():
if self.get_package(virtualKey):
try:
self.get_package(virtualKey).get_provider().classpath()
result= (result and True)
continue
except AttributeError:
if not self.get_package(virtualKey).get_available_vms().count(virtualMachine.name()) > 0:
result = False
else:
result=result and True
finally:
self.set_active_vm(storeVM)
return result
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