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__init__.py
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150 lines (117 loc) · 4.26 KB
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import os
import pathlib
import subprocess
import tempfile
tmp_dir = tempfile.mkdtemp()
import jnius_config
jnius_config.add_classpath(tmp_dir)
def _get_logger(name):
import logging
return logging.getLogger(name)
def _init_jvm():
import jnius_config
import os
CLASSPATH_STR = 'SCYJAVA_CLASSPATH'
CLASSPATH = os.environ[CLASSPATH_STR].split(jnius_config.split_char) if CLASSPATH_STR in os.environ else []
jnius_config.add_classpath(*CLASSPATH)
JVM_OPTIONS_STR = 'SCYJAVA_JVM_OPTIONS'
if JVM_OPTIONS_STR in os.environ:
jnius_config.add_options(*os.environ[JVM_OPTIONS_STR].split(' '))
import jnius
scijava = None # jnius.autoclass('some scijava grab class')
return jnius_config, jnius, scijava
logger = _get_logger('scyjava')
config, _jnius, _scijava = _init_jvm()
from jnius import (
autoclass as _autoclass,
cast as _cast,
JavaException )
from .wrap_java_class import _wrap_java_class
# for now, use grape directly:
_HashMap = _autoclass('java.util.HashMap')
_GrapeIvy = _autoclass('groovy.grape.GrapeIvy')
_grapeIvy = _GrapeIvy()
_classLoader = _autoclass('groovy.lang.GroovyClassLoader')()
_Thread = _autoclass('java.lang.Thread')
_ClassLoader = _autoclass('java.lang.ClassLoader')
get_class_loader_code="""
import java.lang.Class;
import java.lang.ClassLoader;
import java.lang.reflect.Field;
public class GetClassLoaderClass
{
public static Class<ClassLoader> getClassLoaderClass()
{
return ClassLoader.class;
}
public static void setSystemClassLoader( ClassLoader classLoader ) throws IllegalAccessException, NoSuchFieldException
{
Field scl = getClassLoaderClass().getDeclaredField( "scl" );
scl.setAccessible( true );
scl.set( null, classLoader );
}
}
"""
fp = pathlib.Path( tmp_dir ) / 'GetClassLoaderClass.java'
print( tmp_dir )
with open( fp, 'w' ) as f:
f.write( get_class_loader_code )
javac = pathlib.Path( os.environ[ 'JAVA_HOME' ] ) / 'bin' / 'javac'
proc = subprocess.run(
[ javac, '-cp', jnius_config.split_char.join( jnius_config.get_classpath() ), fp ],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
if proc.returncode != 0:
print("Failed!")
print ( proc.stderr )
_GetClassLoaderClass = _autoclass('GetClassLoaderClass')
_GetClassLoaderClass.setSystemClassLoader( _classLoader );
print("System classloader", _ClassLoader.getSystemClassLoader().getClass().getName())
# try:
# _scl = _GetClassLoaderClass.getClassLoaderClass().getDeclaredField('scl')
# print(_scl)
# _scl.setAccessible(True)
# _scl.set(None, _classLoader)
# except JavaException as e:
# print(e)
def _default_map(**extra_options):
m = _HashMap()
m.put('classLoader', _classLoader)
m.put('autoDownload', 'true')
m.put("noExceptions", 'false')
for k, v in extra_options.items():
m.put(k, v)
return m
def repository(url, name=None, **grape_options):
m = _default_map(**grape_options)
m.put('name', name)
m.put('root', url)
return _grapeIvy.addResolver(m)
repository('http://maven.imagej.net/content/groups/public', 'imagej')
def dependency(groupId, artifactId, version=None, **grape_options):
m = _default_map(**grape_options)
m.put('artifactId', artifactId)
m.put('groupId', groupId)
m.put('version', version)
return _grapeIvy.grab(m)
def import_class(clazz):
try:
print("SETTING CLASSLOADER", _classLoader)
# _Thread.currentThread().setContextClassLoader(_cast('java.lang.ClassLoader',_classLoader))
_Thread.currentThread().setContextClassLoader(_classLoader)
except JavaException as e:
print( "e.classname -- {}".format( e.classname ) )
print( "e.innermessage -- {}".format( e.innermessage ) )
# for st in e.stacktrace:
# print( st )
# loaded_class = _classLoader.loadClass(clazz)
# clz = Class(noinstance=True)
# clz.instanciate_from(create_local_ref(j_env, jc))
print("classloader", _Thread.currentThread().getContextClassLoader().getClass().getName())
return _autoclass(clazz)
# print( "CONSTRS ", loaded_class)
# return _wrap_java_class(clazz, loaded_class)
def list_grapes():
grapes = _grapeIvy.enumerateGrapes()
grapes = {k : grapes.get(k).toString() for k in grapes.keySet().toArray()}
return grapes