116 lines
3.1 KiB
C++
116 lines
3.1 KiB
C++
#include <mbgl/platform/default/caching_http_file_source.hpp>
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#include <mbgl/storage/file_request.hpp>
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#include <mbgl/storage/http_request.hpp>
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#include <mbgl/storage/sqlite_store.hpp>
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#include <mbgl/util/uv-messenger.h>
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#include <mbgl/util/std.hpp>
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#include <uv.h>
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namespace mbgl {
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CachingHTTPFileSource::CachingHTTPFileSource(const std::string &path_)
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: path(path_) {}
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CachingHTTPFileSource::~CachingHTTPFileSource() {
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if (hasLoop()) {
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assert(thread_id == uv_thread_self());
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uv_messenger_stop(queue, [](uv_messenger_t *msgr) {
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delete msgr;
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});
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util::ptr<BaseRequest> req;
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// Send a cancel() message to all requests that we are still holding.
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for (const std::pair<std::string, std::weak_ptr<BaseRequest>> &pair : pending) {
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if ((req = pair.second.lock())) {
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req->cancel();
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}
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}
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}
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}
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void CachingHTTPFileSource::setLoop(uv_loop_t* loop_) {
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thread_id = uv_thread_self();
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store = !path.empty() ? util::ptr<SQLiteStore>(new SQLiteStore(loop_, path)) : nullptr;
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loop = loop_;
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queue = new uv_messenger_t;
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uv_messenger_init(loop, queue, [](void *ptr) {
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std::unique_ptr<std::function<void()>> fn { reinterpret_cast<std::function<void()> *>(ptr) };
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(*fn)();
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});
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uv_unref((uv_handle_t *)&queue->async);
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}
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bool CachingHTTPFileSource::hasLoop() {
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return loop;
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}
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void CachingHTTPFileSource::setBase(const std::string &value) {
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assert(thread_id == uv_thread_self());
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base = value;
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}
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const std::string &CachingHTTPFileSource::getBase() const {
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assert(thread_id == uv_thread_self());
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return base;
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}
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std::unique_ptr<Request> CachingHTTPFileSource::request(ResourceType type, const std::string &url) {
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assert(thread_id == uv_thread_self());
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// Make URL absolute.
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const std::string absoluteURL = [&]() -> std::string {
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const size_t separator = url.find("://");
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if (separator == std::string::npos) {
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// Relative URL.
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return base + url;
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} else {
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return url;
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}
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}();
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util::ptr<BaseRequest> req;
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// First, try to find an existing Request object.
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auto it = pending.find(absoluteURL);
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if (it != pending.end()) {
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req = it->second.lock();
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}
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if (!req) {
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if (absoluteURL.substr(0, 7) == "file://") {
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req = std::make_shared<FileRequest>(absoluteURL.substr(7), loop);
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} else {
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req = std::make_shared<HTTPRequest>(type, absoluteURL, loop, store);
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}
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pending.emplace(absoluteURL, req);
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}
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return util::make_unique<Request>(req);
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}
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void CachingHTTPFileSource::prepare(std::function<void()> fn) {
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if (thread_id == uv_thread_self()) {
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fn();
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} else {
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uv_messenger_send(queue, new std::function<void()>(std::move(fn)));
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}
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}
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void CachingHTTPFileSource::retryAllPending() {
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assert(thread_id == uv_thread_self());
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util::ptr<BaseRequest> req;
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for (const std::pair<std::string, std::weak_ptr<BaseRequest>> &pair : pending) {
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if ((req = pair.second.lock())) {
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req->retryImmediately();
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}
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}
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}
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}
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