pandemonium_engine/modules/web/file_cache.cpp

299 lines
8.9 KiB
C++

/*************************************************************************/
/* file_cache.cpp */
/*************************************************************************/
/* This file is part of: */
/* PANDEMONIUM ENGINE */
/* https://github.com/Relintai/pandemonium_engine */
/*************************************************************************/
/* Copyright (c) 2022-present Péter Magyar. */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "file_cache.h"
#include "core/config/project_settings.h"
#include "core/os/dir_access.h"
#include "core/os/file_access.h"
#include "core/os/os.h"
#include "core/string/print_string.h"
String FileCache::get_wwwroot() {
return _wwwroot_orig;
}
void FileCache::set_wwwroot(const String &val) {
_wwwroot_orig = val;
}
String FileCache::get_wwwroot_abs() {
return _wwwroot;
}
int FileCache::get_cache_invalidation_time() {
return static_cast<int>(cache_invalidation_time);
}
void FileCache::set_cache_invalidation_time(const int &val) {
cache_invalidation_time = static_cast<uint64_t>(val);
}
void FileCache::wwwroot_register_file(const String &file_path) {
RegisteredFileEntry e;
e.orig_path = file_path;
e.lowercase_path = file_path.to_lower();
_registered_files.push_back(e);
}
void FileCache::wwwroot_deregister_file(const String &file_path) {
for (int i = 0; i < _registered_files.size(); ++i) {
const RegisteredFileEntry &e = _registered_files[i];
if (file_path == e.orig_path) {
_registered_files.remove(i);
return;
}
}
}
bool FileCache::wwwroot_has_file(const String &file_path) {
//return registered_files.has(file_path);
for (int i = 0; i < _registered_files.size(); ++i) {
const RegisteredFileEntry &e = _registered_files[i];
if (file_path == e.lowercase_path) {
return true;
}
}
return false;
}
int FileCache::wwwroot_get_file_index(const String &file_path) {
for (int i = 0; i < _registered_files.size(); ++i) {
const RegisteredFileEntry &e = _registered_files[i];
if (file_path == e.lowercase_path) {
return i;
}
}
return -1;
}
String FileCache::wwwroot_get_file_orig_path(const int index) {
ERR_FAIL_INDEX_V(index, _registered_files.size(), "");
return _registered_files[index].orig_path;
}
String FileCache::wwwroot_get_file_orig_path_abs(const int index) {
return get_wwwroot_abs() + wwwroot_get_file_orig_path(index);
}
void FileCache::wwwroot_refresh_cache() {
_lock.write_lock();
_registered_files.clear();
if (_wwwroot_orig != "") {
_wwwroot = _wwwroot_orig; //DirAccess::get_filesystem_abspath_for(_wwwroot_orig);
_wwwroot = _wwwroot.path_clean_end_slash();
wwwroot_evaluate_dir(_wwwroot);
}
_lock.write_unlock();
}
void FileCache::wwwroot_evaluate_dir(const String &path, const bool should_exist) {
DirAccess *da = DirAccess::open(path);
ERR_FAIL_COND_MSG(!da, "Error opening wwwroot! folder: " + path);
da->list_dir_begin();
String f = da->get_next();
while (f != String()) {
if (f == "." || f == "..") {
f = da->get_next();
continue;
}
if (!da->current_is_dir()) {
String np = path + "/" + f;
np = np.substr(_wwwroot.size() - 1, np.size() - _wwwroot.size());
wwwroot_register_file(np);
} else {
wwwroot_evaluate_dir(path + "/" + f);
}
f = da->get_next();
}
da->list_dir_end();
memdelete(da);
}
bool FileCache::get_cached_body(const String &path, String *body) {
//TODO ERROR MACRO body == null
_lock.read_lock();
CacheEntry *e = cache_map[path];
_lock.read_unlock();
if (!e) {
return false;
}
if (cache_invalidation_time > 0) {
uint64_t current_timestamp = OS::get_singleton()->get_unix_time();
uint64_t diff = current_timestamp - e->timestamp;
if (diff > cache_invalidation_time) {
return false;
}
}
body->operator+=(e->body);
return true;
}
bool FileCache::has_cached_body(const String &path) {
//TODO ERROR MACRO body == null
_lock.read_lock();
CacheEntry *e = cache_map[path];
_lock.read_unlock();
if (!e) {
return false;
}
if (cache_invalidation_time > 0) {
uint64_t current_timestamp = OS::get_singleton()->get_unix_time();
uint64_t diff = current_timestamp - e->timestamp;
if (diff > cache_invalidation_time) {
return false;
}
}
return true;
}
String FileCache::get_cached_body_bind(const String &path) {
//TODO ERROR MACRO body == null
_lock.read_lock();
CacheEntry *e = cache_map[path];
_lock.read_unlock();
if (!e) {
return "";
}
if (cache_invalidation_time > 0) {
uint64_t current_timestamp = OS::get_singleton()->get_unix_time();
uint64_t diff = current_timestamp - e->timestamp;
if (diff > cache_invalidation_time) {
return "";
}
}
return e->body;
}
void FileCache::set_cached_body(const String &path, const String &body) {
_lock.write_lock();
CacheEntry *e = cache_map[path];
if (!e) {
e = memnew(CacheEntry());
cache_map[path] = e;
}
uint64_t current_timestamp = OS::get_singleton()->get_unix_time();
e->timestamp = current_timestamp;
e->body = body;
_lock.write_unlock();
}
void FileCache::clear() {
_lock.write_lock();
_registered_files.clear();
for (RBMap<String, CacheEntry *>::Element *E = cache_map.front(); E; E++) {
CacheEntry *ce = E->get();
if (ce) {
memdelete(ce);
}
}
cache_map.clear();
_lock.write_unlock();
}
FileCache::FileCache() {
cache_invalidation_time = 0;
}
FileCache::~FileCache() {
_registered_files.clear();
}
void FileCache::_bind_methods() {
ClassDB::bind_method(D_METHOD("get_wwwroot"), &FileCache::get_wwwroot);
ClassDB::bind_method(D_METHOD("set_wwwroot", "val"), &FileCache::set_wwwroot);
ADD_PROPERTY(PropertyInfo(Variant::STRING, "wwwroot"), "set_wwwroot", "get_wwwroot");
ClassDB::bind_method(D_METHOD("get_wwwroot_abs"), &FileCache::get_wwwroot_abs);
ClassDB::bind_method(D_METHOD("get_cache_invalidation_time"), &FileCache::get_cache_invalidation_time);
ClassDB::bind_method(D_METHOD("set_cache_invalidation_time", "val"), &FileCache::set_cache_invalidation_time);
ADD_PROPERTY(PropertyInfo(Variant::INT, "cache_invalidation_time"), "set_cache_invalidation_time", "get_cache_invalidation_time");
ClassDB::bind_method(D_METHOD("wwwroot_register_file", "file_path"), &FileCache::wwwroot_register_file);
ClassDB::bind_method(D_METHOD("wwwroot_deregister_file", "file_path"), &FileCache::wwwroot_deregister_file);
ClassDB::bind_method(D_METHOD("wwwroot_has_file", "file_path"), &FileCache::wwwroot_has_file);
ClassDB::bind_method(D_METHOD("wwwroot_get_file_index", "file_path"), &FileCache::wwwroot_get_file_index);
ClassDB::bind_method(D_METHOD("wwwroot_get_file_orig_path", "index"), &FileCache::wwwroot_get_file_orig_path);
ClassDB::bind_method(D_METHOD("wwwroot_get_file_orig_path_abs", "index"), &FileCache::wwwroot_get_file_orig_path_abs);
ClassDB::bind_method(D_METHOD("wwwroot_refresh_cache"), &FileCache::wwwroot_refresh_cache);
ClassDB::bind_method(D_METHOD("wwwroot_evaluate_dir", "file_path", "should_exist "), &FileCache::wwwroot_evaluate_dir, true);
ClassDB::bind_method(D_METHOD("get_cached_body", "path"), &FileCache::get_cached_body_bind);
ClassDB::bind_method(D_METHOD("has_cached_body", "path"), &FileCache::has_cached_body);
ClassDB::bind_method(D_METHOD("set_cached_body", "path", "body"), &FileCache::set_cached_body);
ClassDB::bind_method(D_METHOD("clear"), &FileCache::clear);
}