ClassLoader *
class_loader_new(JNIEnv *java_env)
{
ClassLoader *self = g_new0(ClassLoader, 1);
self->syslogng_class_loader = CALL_JAVA_FUNCTION(java_env, FindClass, SYSLOG_NG_CLASS_LOADER);
if (!self->syslogng_class_loader)
{
msg_error("Can't find class",
evt_tag_str("class_name", SYSLOG_NG_CLASS_LOADER),
NULL);
goto error;
}
self->loader_constructor = CALL_JAVA_FUNCTION(java_env, GetMethodID, self->syslogng_class_loader, "<init>", "()V");
if (!self->loader_constructor)
{
msg_error("Can't find constructor for SyslogNgClassLoader", NULL);
goto error;
}
self->mi_loadclass = CALL_JAVA_FUNCTION(java_env, GetMethodID, self->syslogng_class_loader, "loadClass", "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/Class;");
if (!self->mi_loadclass)
{
msg_error("Can't find method in class",
evt_tag_str("class_name", SYSLOG_NG_CLASS_LOADER),
evt_tag_str("method", "Class loadClass(String className)"),
NULL);
goto error;
}
self->mi_init_current_thread = CALL_JAVA_FUNCTION(java_env, GetMethodID, self->syslogng_class_loader, "initCurrentThread", "()V");
if (!self->mi_init_current_thread)
{
msg_error("Can't find method in class",
evt_tag_str("class_name", SYSLOG_NG_CLASS_LOADER),
evt_tag_str("method", "void initCurrentThread()"),
NULL);
}
self->loader_object = CALL_JAVA_FUNCTION(java_env, NewObject, self->syslogng_class_loader, self->loader_constructor);
if (!self->loader_object)
{
msg_error("Can't create SyslogNgClassLoader", NULL);
goto error;
}
return self;
error:
class_loader_free(self, java_env);
return NULL;
}
jclass
class_loader_load_class(ClassLoader *self, JNIEnv *java_env, const gchar *class_name, const gchar *class_path)
{
jclass result;
jstring str_class_name = CALL_JAVA_FUNCTION(java_env, NewStringUTF, class_name);
jstring str_class_path = __create_class_path(self, java_env, class_path);
result = CALL_JAVA_FUNCTION(java_env, CallObjectMethod, self->loader_object, self->mi_loadclass, str_class_name, str_class_path);
CALL_JAVA_FUNCTION(java_env, DeleteLocalRef, str_class_name);
CALL_JAVA_FUNCTION(java_env, DeleteLocalRef, str_class_path);
return result;
}
void class_loader_free(ClassLoader *self, JNIEnv *java_env)
{
if (!self)
{
return;
}
if (self->loader_object)
{
CALL_JAVA_FUNCTION(java_env, DeleteLocalRef, self->loader_object);
}
if (self->syslogng_class_loader)
{
CALL_JAVA_FUNCTION(java_env, DeleteLocalRef, self->syslogng_class_loader);
}
g_free(self);
return;
}
jobject
java_log_message_proxy_create_java_object(JavaLogMessageProxy *self, LogMessage *msg)
{
JNIEnv *java_env = java_machine_get_env(self->java_machine, &java_env);
jobject jmsg = CALL_JAVA_FUNCTION(java_env, NewObject, self->loaded_class, self->mi_constructor, log_msg_ref(msg));
if (!jmsg)
{
msg_error("Can't create object",
evt_tag_str("class_name", LOG_MESSAGE),
NULL);
}
return jmsg;
}
void
java_log_message_proxy_free(JavaLogMessageProxy *self)
{
JNIEnv *env = NULL;
env = java_machine_get_env(self->java_machine, &env);
if (self->loaded_class)
{
CALL_JAVA_FUNCTION(env, DeleteLocalRef, self->loaded_class);
}
java_machine_unref(self->java_machine);
g_free(self);
}
jstring
__create_class_path(ClassLoader *self, JNIEnv *java_env, const gchar *class_path)
{
GString *g_class_path = g_string_new(get_installation_path_for(SYSLOG_NG_JAVA_MODULE_PATH));
jstring str_class_path = NULL;
g_string_append(g_class_path, "/" SYSLOG_NG_JAR);
if (class_path && (strlen(class_path) > 0))
{
g_string_append_c(g_class_path, ':');
g_string_append(g_class_path, class_path);
}
str_class_path = CALL_JAVA_FUNCTION(java_env, NewStringUTF, g_class_path->str);
g_string_free(g_class_path, TRUE);
return str_class_path;
}
static gboolean
__load_object(JavaLogMessageProxy *self)
{
JNIEnv *java_env = NULL;
java_env = java_machine_get_env(self->java_machine, &java_env);
self->loaded_class = java_machine_load_class(self->java_machine, LOG_MESSAGE, NULL);
if (!self->loaded_class) {
msg_error("Can't find class",
evt_tag_str("class_name", LOG_MESSAGE),
NULL);
return FALSE;
}
self->mi_constructor = CALL_JAVA_FUNCTION(java_env, GetMethodID, self->loaded_class, "<init>", "(J)V");
if (!self->mi_constructor) {
msg_error("Can't find default constructor for class",
evt_tag_str("class_name", LOG_MESSAGE),
NULL);
return FALSE;
}
return TRUE;
}
void
class_loader_init_current_thread(ClassLoader *self, JNIEnv *java_env)
{
CALL_JAVA_FUNCTION(java_env, CallVoidMethod, self->loader_object, self->mi_init_current_thread);
}
