void SQLiteStore::get(const std::string &path, GetCallback callback, void *ptr) {
assert(uv_thread_self() == thread_id);
if (!db || !*db) {
if (callback) {
callback(nullptr, ptr);
}
return;
}
GetBaton *get_baton = new GetBaton;
get_baton->db = db;
get_baton->path = path;
get_baton->ptr = ptr;
get_baton->callback = callback;
uv_worker_send(worker, get_baton, [](void *data) {
GetBaton *baton = (GetBaton *)data;
const std::string url = unifyMapboxURLs(baton->path);
// 0 1 2
Statement stmt = baton->db->prepare("SELECT `code`, `type`, `modified`, "
// 3 4 5 6
"`etag`, `expires`, `data`, `compressed` FROM `http_cache` WHERE `url` = ?");
stmt.bind(1, url.c_str());
if (stmt.run()) {
// There is data.
baton->response = std::unique_ptr<Response>(new Response);
baton->response->code = stmt.get<int>(0);
baton->type = ResourceType(stmt.get<int>(1));
baton->response->modified = stmt.get<int64_t>(2);
baton->response->etag = stmt.get<std::string>(3);
baton->response->expires = stmt.get<int64_t>(4);
baton->response->data = stmt.get<std::string>(5);
if (stmt.get<int>(6)) { // == compressed
baton->response->data = util::decompress(baton->response->data);
}
} else {
// There is no data.
// This is a noop.
}
}, [](void *data) {
std::unique_ptr<GetBaton> baton { (GetBaton *)data };
if (baton->callback) {
baton->callback(std::move(baton->response), baton->ptr);
}
});
}
void SQLiteStore::updateExpiration(const std::string &path, int64_t expires) {
assert(uv_thread_self() == thread_id);
if (!db || !*db) return;
ExpirationBaton *expiration_baton = new ExpirationBaton;
expiration_baton->db = db;
expiration_baton->path = path;
expiration_baton->expires = expires;
uv_worker_send(worker, expiration_baton, [](void *data) {
ExpirationBaton *baton = (ExpirationBaton *)data;
const std::string url = unifyMapboxURLs(baton->path);
Statement stmt = // 1 2
baton->db->prepare("UPDATE `http_cache` SET `expires` = ? WHERE `url` = ?");
stmt.bind<int64_t>(1, baton->expires);
stmt.bind(2, url.c_str());
stmt.run();
}, [](void *data) {
delete (ExpirationBaton *)data;
});
}
