--- /dev/null
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include "include/compat.h"
+
+#include <boost/utility/string_ref.hpp>
+
+#include <curl/curl.h>
+#include <curl/easy.h>
+#include <curl/multi.h>
+
+#include "rgw_common.h"
+#include "rgw_http_client.h"
+#include "rgw_http_errors.h"
+#include "common/RefCountedObj.h"
+
+#include "rgw_coroutine.h"
+
+#include <atomic>
+
+#define dout_context g_ceph_context
+#define dout_subsys ceph_subsys_rgw
+
+struct rgw_http_req_data : public RefCountedObject {
+ CURL *easy_handle;
+ curl_slist *h;
+ uint64_t id;
+ int ret;
+ std::atomic<bool> done = { false };
+ RGWHTTPClient *client;
+ void *user_info;
+ bool registered;
+ RGWHTTPManager *mgr;
+ char error_buf[CURL_ERROR_SIZE];
+
+ Mutex lock;
+ Cond cond;
+
+ rgw_http_req_data() : easy_handle(NULL), h(NULL), id(-1), ret(0),
+ client(nullptr), user_info(nullptr), registered(false),
+ mgr(NULL), lock("rgw_http_req_data::lock") {
+ memset(error_buf, 0, sizeof(error_buf));
+ }
+
+ int wait() {
+ Mutex::Locker l(lock);
+ cond.Wait(lock);
+ return ret;
+ }
+
+
+ void finish(int r) {
+ Mutex::Locker l(lock);
+ ret = r;
+ if (easy_handle)
+ curl_easy_cleanup(easy_handle);
+
+ if (h)
+ curl_slist_free_all(h);
+
+ easy_handle = NULL;
+ h = NULL;
+ done = true;
+ cond.Signal();
+ }
+
+ bool is_done() {
+ return done;
+ }
+
+ int get_retcode() {
+ Mutex::Locker l(lock);
+ return ret;
+ }
+
+ RGWHTTPManager *get_manager() {
+ Mutex::Locker l(lock);
+ return mgr;
+ }
+};
+
+/*
+ * the simple set of callbacks will be called on RGWHTTPClient::process()
+ */
+/* Static methods - callbacks for libcurl. */
+size_t RGWHTTPClient::simple_receive_http_header(void * const ptr,
+ const size_t size,
+ const size_t nmemb,
+ void * const _info)
+{
+ RGWHTTPClient *client = static_cast<RGWHTTPClient *>(_info);
+ const size_t len = size * nmemb;
+ int ret = client->receive_header(ptr, size * nmemb);
+ if (ret < 0) {
+ dout(0) << "WARNING: client->receive_header() returned ret="
+ << ret << dendl;
+ }
+
+ return len;
+}
+
+size_t RGWHTTPClient::simple_receive_http_data(void * const ptr,
+ const size_t size,
+ const size_t nmemb,
+ void * const _info)
+{
+ RGWHTTPClient *client = static_cast<RGWHTTPClient *>(_info);
+ const size_t len = size * nmemb;
+ int ret = client->receive_data(ptr, size * nmemb);
+ if (ret < 0) {
+ dout(0) << "WARNING: client->receive_data() returned ret="
+ << ret << dendl;
+ }
+
+ return len;
+}
+
+size_t RGWHTTPClient::simple_send_http_data(void * const ptr,
+ const size_t size,
+ const size_t nmemb,
+ void * const _info)
+{
+ RGWHTTPClient *client = static_cast<RGWHTTPClient *>(_info);
+ int ret = client->send_data(ptr, size * nmemb);
+ if (ret < 0) {
+ dout(0) << "WARNING: client->send_data() returned ret="
+ << ret << dendl;
+ }
+
+ return ret;
+}
+
+/*
+ * the following set of callbacks will be called either on RGWHTTPManager::process(),
+ * or via the RGWHTTPManager async processing.
+ */
+size_t RGWHTTPClient::receive_http_header(void * const ptr,
+ const size_t size,
+ const size_t nmemb,
+ void * const _info)
+{
+ rgw_http_req_data *req_data = static_cast<rgw_http_req_data *>(_info);
+ size_t len = size * nmemb;
+
+ Mutex::Locker l(req_data->lock);
+
+ if (!req_data->registered) {
+ return len;
+ }
+
+ int ret = req_data->client->receive_header(ptr, size * nmemb);
+ if (ret < 0) {
+ dout(0) << "WARNING: client->receive_header() returned ret=" << ret << dendl;
+ }
+
+ return len;
+}
+
+size_t RGWHTTPClient::receive_http_data(void * const ptr,
+ const size_t size,
+ const size_t nmemb,
+ void * const _info)
+{
+ rgw_http_req_data *req_data = static_cast<rgw_http_req_data *>(_info);
+ size_t len = size * nmemb;
+
+ Mutex::Locker l(req_data->lock);
+
+ if (!req_data->registered) {
+ return len;
+ }
+
+ int ret = req_data->client->receive_data(ptr, size * nmemb);
+ if (ret < 0) {
+ dout(0) << "WARNING: client->receive_data() returned ret=" << ret << dendl;
+ }
+
+ return len;
+}
+
+size_t RGWHTTPClient::send_http_data(void * const ptr,
+ const size_t size,
+ const size_t nmemb,
+ void * const _info)
+{
+ rgw_http_req_data *req_data = static_cast<rgw_http_req_data *>(_info);
+
+ Mutex::Locker l(req_data->lock);
+
+ if (!req_data->registered) {
+ return 0;
+ }
+
+ int ret = req_data->client->send_data(ptr, size * nmemb);
+ if (ret < 0) {
+ dout(0) << "WARNING: client->receive_data() returned ret=" << ret << dendl;
+ }
+
+ return ret;
+}
+
+static curl_slist *headers_to_slist(param_vec_t& headers)
+{
+ curl_slist *h = NULL;
+
+ param_vec_t::iterator iter;
+ for (iter = headers.begin(); iter != headers.end(); ++iter) {
+ pair<string, string>& p = *iter;
+ string val = p.first;
+
+ if (strncmp(val.c_str(), "HTTP_", 5) == 0) {
+ val = val.substr(5);
+ }
+
+ /* we need to convert all underscores into dashes as some web servers forbid them
+ * in the http header field names
+ */
+ for (size_t i = 0; i < val.size(); i++) {
+ if (val[i] == '_') {
+ val[i] = '-';
+ }
+ }
+
+ val.append(": ");
+ val.append(p.second);
+ h = curl_slist_append(h, val.c_str());
+ }
+
+ return h;
+}
+
+static bool is_upload_request(const char *method)
+{
+ if (method == nullptr) {
+ return false;
+ }
+ return strcmp(method, "POST") == 0 || strcmp(method, "PUT") == 0;
+}
+
+/*
+ * process a single simple one off request, not going through RGWHTTPManager. Not using
+ * req_data.
+ */
+int RGWHTTPClient::process(const char *method, const char *url)
+{
+ int ret = 0;
+ CURL *curl_handle;
+
+ char error_buf[CURL_ERROR_SIZE];
+
+ last_method = (method ? method : "");
+ last_url = (url ? url : "");
+
+ curl_handle = curl_easy_init();
+
+ dout(20) << "sending request to " << url << dendl;
+
+ curl_slist *h = headers_to_slist(headers);
+
+ curl_easy_setopt(curl_handle, CURLOPT_CUSTOMREQUEST, method);
+ curl_easy_setopt(curl_handle, CURLOPT_URL, url);
+ curl_easy_setopt(curl_handle, CURLOPT_NOPROGRESS, 1L);
+ curl_easy_setopt(curl_handle, CURLOPT_NOSIGNAL, 1L);
+ curl_easy_setopt(curl_handle, CURLOPT_HEADERFUNCTION, simple_receive_http_header);
+ curl_easy_setopt(curl_handle, CURLOPT_WRITEHEADER, (void *)this);
+ curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, simple_receive_http_data);
+ curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, (void *)this);
+ curl_easy_setopt(curl_handle, CURLOPT_ERRORBUFFER, (void *)error_buf);
+ if (h) {
+ curl_easy_setopt(curl_handle, CURLOPT_HTTPHEADER, (void *)h);
+ }
+ curl_easy_setopt(curl_handle, CURLOPT_READFUNCTION, simple_send_http_data);
+ curl_easy_setopt(curl_handle, CURLOPT_READDATA, (void *)this);
+ if (is_upload_request(method)) {
+ curl_easy_setopt(curl_handle, CURLOPT_UPLOAD, 1L);
+ }
+ if (has_send_len) {
+ curl_easy_setopt(curl_handle, CURLOPT_INFILESIZE, (void *)send_len);
+ }
+ if (!verify_ssl) {
+ curl_easy_setopt(curl_handle, CURLOPT_SSL_VERIFYPEER, 0L);
+ curl_easy_setopt(curl_handle, CURLOPT_SSL_VERIFYHOST, 0L);
+ dout(20) << "ssl verification is set to off" << dendl;
+ }
+
+ CURLcode status = curl_easy_perform(curl_handle);
+ if (status) {
+ dout(0) << "curl_easy_perform returned status " << status << " error: " << error_buf << dendl;
+ ret = -EINVAL;
+ }
+ curl_easy_getinfo(curl_handle, CURLINFO_RESPONSE_CODE, &http_status);
+ curl_easy_cleanup(curl_handle);
+ curl_slist_free_all(h);
+
+ return ret;
+}
+
+string RGWHTTPClient::to_str()
+{
+ string method_str = (last_method.empty() ? "<no-method>" : last_method);
+ string url_str = (last_url.empty() ? "<no-url>" : last_url);
+ return method_str + " " + url_str;
+}
+
+int RGWHTTPClient::get_req_retcode()
+{
+ if (!req_data) {
+ return -EINVAL;
+ }
+
+ return req_data->get_retcode();
+}
+
+/*
+ * init request, will be used later with RGWHTTPManager
+ */
+int RGWHTTPClient::init_request(const char *method, const char *url, rgw_http_req_data *_req_data, bool send_data_hint)
+{
+ assert(!req_data);
+ _req_data->get();
+ req_data = _req_data;
+
+ CURL *easy_handle;
+
+ easy_handle = curl_easy_init();
+
+ req_data->easy_handle = easy_handle;
+
+ dout(20) << "sending request to " << url << dendl;
+
+ curl_slist *h = headers_to_slist(headers);
+
+ req_data->h = h;
+
+ last_method = (method ? method : "");
+ last_url = (url ? url : "");
+
+ curl_easy_setopt(easy_handle, CURLOPT_CUSTOMREQUEST, method);
+ curl_easy_setopt(easy_handle, CURLOPT_URL, url);
+ curl_easy_setopt(easy_handle, CURLOPT_NOPROGRESS, 1L);
+ curl_easy_setopt(easy_handle, CURLOPT_NOSIGNAL, 1L);
+ curl_easy_setopt(easy_handle, CURLOPT_HEADERFUNCTION, receive_http_header);
+ curl_easy_setopt(easy_handle, CURLOPT_WRITEHEADER, (void *)req_data);
+ curl_easy_setopt(easy_handle, CURLOPT_WRITEFUNCTION, receive_http_data);
+ curl_easy_setopt(easy_handle, CURLOPT_WRITEDATA, (void *)req_data);
+ curl_easy_setopt(easy_handle, CURLOPT_ERRORBUFFER, (void *)req_data->error_buf);
+ if (h) {
+ curl_easy_setopt(easy_handle, CURLOPT_HTTPHEADER, (void *)h);
+ }
+ curl_easy_setopt(easy_handle, CURLOPT_READFUNCTION, send_http_data);
+ curl_easy_setopt(easy_handle, CURLOPT_READDATA, (void *)req_data);
+ if (send_data_hint || is_upload_request(method)) {
+ curl_easy_setopt(easy_handle, CURLOPT_UPLOAD, 1L);
+ }
+ if (has_send_len) {
+ curl_easy_setopt(easy_handle, CURLOPT_INFILESIZE, (void *)send_len);
+ }
+ if (!verify_ssl) {
+ curl_easy_setopt(easy_handle, CURLOPT_SSL_VERIFYPEER, 0L);
+ curl_easy_setopt(easy_handle, CURLOPT_SSL_VERIFYHOST, 0L);
+ dout(20) << "ssl verification is set to off" << dendl;
+ }
+ curl_easy_setopt(easy_handle, CURLOPT_PRIVATE, (void *)req_data);
+
+ return 0;
+}
+
+/*
+ * wait for async request to complete
+ */
+int RGWHTTPClient::wait()
+{
+ if (!req_data->is_done()) {
+ return req_data->wait();
+ }
+
+ return req_data->ret;
+}
+
+RGWHTTPClient::~RGWHTTPClient()
+{
+ if (req_data) {
+ RGWHTTPManager *http_manager = req_data->get_manager();
+ if (http_manager) {
+ http_manager->remove_request(this);
+ }
+
+ req_data->put();
+ }
+}
+
+
+int RGWHTTPHeadersCollector::receive_header(void * const ptr, const size_t len)
+{
+ const boost::string_ref header_line(static_cast<const char * const>(ptr), len);
+
+ /* We're tokening the line that way due to backward compatibility. */
+ const size_t sep_loc = header_line.find_first_of(" \t:");
+
+ if (boost::string_ref::npos == sep_loc) {
+ /* Wrongly formatted header? Just skip it. */
+ return 0;
+ }
+
+ header_name_t name(header_line.substr(0, sep_loc));
+ if (0 == relevant_headers.count(name)) {
+ /* Not interested in this particular header. */
+ return 0;
+ }
+
+ const auto value_part = header_line.substr(sep_loc + 1);
+
+ /* Skip spaces and tabs after the separator. */
+ const size_t val_loc_s = value_part.find_first_not_of(' ');
+ const size_t val_loc_e = value_part.find_first_of("\r\n");
+
+ if (boost::string_ref::npos == val_loc_s ||
+ boost::string_ref::npos == val_loc_e) {
+ /* Empty value case. */
+ found_headers.emplace(name, header_value_t());
+ } else {
+ found_headers.emplace(name, header_value_t(
+ value_part.substr(val_loc_s, val_loc_e - val_loc_s)));
+ }
+
+ return 0;
+}
+
+int RGWHTTPTransceiver::send_data(void* ptr, size_t len)
+{
+ int length_to_copy = 0;
+ if (post_data_index < post_data.length()) {
+ length_to_copy = min(post_data.length() - post_data_index, len);
+ memcpy(ptr, post_data.data() + post_data_index, length_to_copy);
+ post_data_index += length_to_copy;
+ }
+ return length_to_copy;
+}
+
+
+static int clear_signal(int fd)
+{
+ // since we're in non-blocking mode, we can try to read a lot more than
+ // one signal from signal_thread() to avoid later wakeups. non-blocking reads
+ // are also required to support the curl_multi_wait bug workaround
+ std::array<char, 256> buf;
+ int ret = ::read(fd, (void *)buf.data(), buf.size());
+ if (ret < 0) {
+ ret = -errno;
+ return ret == -EAGAIN ? 0 : ret; // clear EAGAIN
+ }
+ return 0;
+}
+
+#if HAVE_CURL_MULTI_WAIT
+
+static std::once_flag detect_flag;
+static bool curl_multi_wait_bug_present = false;
+
+static int detect_curl_multi_wait_bug(CephContext *cct, CURLM *handle,
+ int write_fd, int read_fd)
+{
+ int ret = 0;
+
+ // write to write_fd so that read_fd becomes readable
+ uint32_t buf = 0;
+ ret = ::write(write_fd, &buf, sizeof(buf));
+ if (ret < 0) {
+ ret = -errno;
+ ldout(cct, 0) << "ERROR: " << __func__ << "(): write() returned " << ret << dendl;
+ return ret;
+ }
+
+ // pass read_fd in extra_fds for curl_multi_wait()
+ int num_fds;
+ struct curl_waitfd wait_fd;
+
+ wait_fd.fd = read_fd;
+ wait_fd.events = CURL_WAIT_POLLIN;
+ wait_fd.revents = 0;
+
+ ret = curl_multi_wait(handle, &wait_fd, 1, 0, &num_fds);
+ if (ret != CURLM_OK) {
+ ldout(cct, 0) << "ERROR: curl_multi_wait() returned " << ret << dendl;
+ return -EIO;
+ }
+
+ // curl_multi_wait should flag revents when extra_fd is readable. if it
+ // doesn't, the bug is present and we can't rely on revents
+ if (wait_fd.revents == 0) {
+ curl_multi_wait_bug_present = true;
+ ldout(cct, 0) << "WARNING: detected a version of libcurl which contains a "
+ "bug in curl_multi_wait(). enabling a workaround that may degrade "
+ "performance slightly." << dendl;
+ }
+
+ return clear_signal(read_fd);
+}
+
+static bool is_signaled(const curl_waitfd& wait_fd)
+{
+ if (wait_fd.fd < 0) {
+ // no fd to signal
+ return false;
+ }
+
+ if (curl_multi_wait_bug_present) {
+ // we can't rely on revents, so we always return true if a wait_fd is given.
+ // this means we'll be trying a non-blocking read on this fd every time that
+ // curl_multi_wait() wakes up
+ return true;
+ }
+
+ return wait_fd.revents > 0;
+}
+
+static int do_curl_wait(CephContext *cct, CURLM *handle, int signal_fd)
+{
+ int num_fds;
+ struct curl_waitfd wait_fd;
+
+ wait_fd.fd = signal_fd;
+ wait_fd.events = CURL_WAIT_POLLIN;
+ wait_fd.revents = 0;
+
+ int ret = curl_multi_wait(handle, &wait_fd, 1, cct->_conf->rgw_curl_wait_timeout_ms, &num_fds);
+ if (ret) {
+ ldout(cct, 0) << "ERROR: curl_multi_wait() returned " << ret << dendl;
+ return -EIO;
+ }
+
+ if (is_signaled(wait_fd)) {
+ ret = clear_signal(signal_fd);
+ if (ret < 0) {
+ ldout(cct, 0) << "ERROR: " << __func__ << "(): read() returned " << ret << dendl;
+ return ret;
+ }
+ }
+ return 0;
+}
+
+#else
+
+static int do_curl_wait(CephContext *cct, CURLM *handle, int signal_fd)
+{
+ fd_set fdread;
+ fd_set fdwrite;
+ fd_set fdexcep;
+ int maxfd = -1;
+
+ FD_ZERO(&fdread);
+ FD_ZERO(&fdwrite);
+ FD_ZERO(&fdexcep);
+
+ /* get file descriptors from the transfers */
+ int ret = curl_multi_fdset(handle, &fdread, &fdwrite, &fdexcep, &maxfd);
+ if (ret) {
+ ldout(cct, 0) << "ERROR: curl_multi_fdset returned " << ret << dendl;
+ return -EIO;
+ }
+
+ if (signal_fd > 0) {
+ FD_SET(signal_fd, &fdread);
+ if (signal_fd >= maxfd) {
+ maxfd = signal_fd + 1;
+ }
+ }
+
+ /* forcing a strict timeout, as the returned fdsets might not reference all fds we wait on */
+ uint64_t to = cct->_conf->rgw_curl_wait_timeout_ms;
+#define RGW_CURL_TIMEOUT 1000
+ if (!to)
+ to = RGW_CURL_TIMEOUT;
+ struct timeval timeout;
+ timeout.tv_sec = to / 1000;
+ timeout.tv_usec = to % 1000;
+
+ ret = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
+ if (ret < 0) {
+ ret = -errno;
+ ldout(cct, 0) << "ERROR: select returned " << ret << dendl;
+ return ret;
+ }
+
+ if (signal_fd > 0 && FD_ISSET(signal_fd, &fdread)) {
+ ret = clear_signal(signal_fd);
+ if (ret < 0) {
+ ldout(cct, 0) << "ERROR: " << __func__ << "(): read() returned " << ret << dendl;
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+#endif
+
+void *RGWHTTPManager::ReqsThread::entry()
+{
+ manager->reqs_thread_entry();
+ return NULL;
+}
+
+/*
+ * RGWHTTPManager has two modes of operation: threaded and non-threaded.
+ */
+RGWHTTPManager::RGWHTTPManager(CephContext *_cct, RGWCompletionManager *_cm) : cct(_cct),
+ completion_mgr(_cm), is_threaded(false),
+ reqs_lock("RGWHTTPManager::reqs_lock"), num_reqs(0), max_threaded_req(0),
+ reqs_thread(NULL)
+{
+ multi_handle = (void *)curl_multi_init();
+ thread_pipe[0] = -1;
+ thread_pipe[1] = -1;
+}
+
+RGWHTTPManager::~RGWHTTPManager() {
+ stop();
+ if (multi_handle)
+ curl_multi_cleanup((CURLM *)multi_handle);
+}
+
+void RGWHTTPManager::register_request(rgw_http_req_data *req_data)
+{
+ RWLock::WLocker rl(reqs_lock);
+ req_data->id = num_reqs;
+ req_data->registered = true;
+ reqs[num_reqs] = req_data;
+ num_reqs++;
+ ldout(cct, 20) << __func__ << " mgr=" << this << " req_data->id=" << req_data->id << ", easy_handle=" << req_data->easy_handle << dendl;
+}
+
+void RGWHTTPManager::unregister_request(rgw_http_req_data *req_data)
+{
+ RWLock::WLocker rl(reqs_lock);
+ req_data->get();
+ req_data->registered = false;
+ unregistered_reqs.push_back(req_data);
+ ldout(cct, 20) << __func__ << " mgr=" << this << " req_data->id=" << req_data->id << ", easy_handle=" << req_data->easy_handle << dendl;
+}
+
+void RGWHTTPManager::complete_request(rgw_http_req_data *req_data)
+{
+ RWLock::WLocker rl(reqs_lock);
+ _complete_request(req_data);
+}
+
+void RGWHTTPManager::_complete_request(rgw_http_req_data *req_data)
+{
+ map<uint64_t, rgw_http_req_data *>::iterator iter = reqs.find(req_data->id);
+ if (iter != reqs.end()) {
+ reqs.erase(iter);
+ }
+ {
+ Mutex::Locker l(req_data->lock);
+ req_data->mgr = nullptr;
+ }
+ if (completion_mgr) {
+ completion_mgr->complete(NULL, req_data->user_info);
+ }
+
+ req_data->put();
+}
+
+void RGWHTTPManager::finish_request(rgw_http_req_data *req_data, int ret)
+{
+ req_data->finish(ret);
+ complete_request(req_data);
+}
+
+void RGWHTTPManager::_finish_request(rgw_http_req_data *req_data, int ret)
+{
+ req_data->finish(ret);
+ _complete_request(req_data);
+}
+
+/*
+ * hook request to the curl multi handle
+ */
+int RGWHTTPManager::link_request(rgw_http_req_data *req_data)
+{
+ ldout(cct, 20) << __func__ << " req_data=" << req_data << " req_data->id=" << req_data->id << ", easy_handle=" << req_data->easy_handle << dendl;
+ CURLMcode mstatus = curl_multi_add_handle((CURLM *)multi_handle, req_data->easy_handle);
+ if (mstatus) {
+ dout(0) << "ERROR: failed on curl_multi_add_handle, status=" << mstatus << dendl;
+ return -EIO;
+ }
+ return 0;
+}
+
+/*
+ * unhook request from the curl multi handle, and finish request if it wasn't finished yet as
+ * there will be no more processing on this request
+ */
+void RGWHTTPManager::_unlink_request(rgw_http_req_data *req_data)
+{
+ if (req_data->easy_handle) {
+ curl_multi_remove_handle((CURLM *)multi_handle, req_data->easy_handle);
+ }
+ if (!req_data->is_done()) {
+ _finish_request(req_data, -ECANCELED);
+ }
+}
+
+void RGWHTTPManager::unlink_request(rgw_http_req_data *req_data)
+{
+ RWLock::WLocker wl(reqs_lock);
+ _unlink_request(req_data);
+}
+
+void RGWHTTPManager::manage_pending_requests()
+{
+ reqs_lock.get_read();
+ if (max_threaded_req == num_reqs && unregistered_reqs.empty()) {
+ reqs_lock.unlock();
+ return;
+ }
+ reqs_lock.unlock();
+
+ RWLock::WLocker wl(reqs_lock);
+
+ if (!unregistered_reqs.empty()) {
+ for (auto& r : unregistered_reqs) {
+ _unlink_request(r);
+ r->put();
+ }
+
+ unregistered_reqs.clear();
+ }
+
+ map<uint64_t, rgw_http_req_data *>::iterator iter = reqs.find(max_threaded_req);
+
+ list<std::pair<rgw_http_req_data *, int> > remove_reqs;
+
+ for (; iter != reqs.end(); ++iter) {
+ rgw_http_req_data *req_data = iter->second;
+ int r = link_request(req_data);
+ if (r < 0) {
+ ldout(cct, 0) << "ERROR: failed to link http request" << dendl;
+ remove_reqs.push_back(std::make_pair(iter->second, r));
+ } else {
+ max_threaded_req = iter->first + 1;
+ }
+ }
+
+ for (auto piter : remove_reqs) {
+ rgw_http_req_data *req_data = piter.first;
+ int r = piter.second;
+
+ _finish_request(req_data, r);
+ }
+}
+
+int RGWHTTPManager::add_request(RGWHTTPClient *client, const char *method, const char *url, bool send_data_hint)
+{
+ rgw_http_req_data *req_data = new rgw_http_req_data;
+
+ int ret = client->init_request(method, url, req_data, send_data_hint);
+ if (ret < 0) {
+ req_data->put();
+ req_data = NULL;
+ return ret;
+ }
+
+ req_data->mgr = this;
+ req_data->client = client;
+ req_data->user_info = client->get_user_info();
+
+ register_request(req_data);
+
+ if (!is_threaded) {
+ ret = link_request(req_data);
+ if (ret < 0) {
+ req_data->put();
+ req_data = NULL;
+ }
+ return ret;
+ }
+ ret = signal_thread();
+ if (ret < 0) {
+ finish_request(req_data, ret);
+ }
+
+ return ret;
+}
+
+int RGWHTTPManager::remove_request(RGWHTTPClient *client)
+{
+ rgw_http_req_data *req_data = client->get_req_data();
+
+ if (!is_threaded) {
+ unlink_request(req_data);
+ return 0;
+ }
+ unregister_request(req_data);
+ int ret = signal_thread();
+ if (ret < 0) {
+ return ret;
+ }
+
+ return 0;
+}
+
+/*
+ * the synchronous, non-threaded request processing method.
+ */
+int RGWHTTPManager::process_requests(bool wait_for_data, bool *done)
+{
+ assert(!is_threaded);
+
+ int still_running;
+ int mstatus;
+
+ do {
+ if (wait_for_data) {
+ int ret = do_curl_wait(cct, (CURLM *)multi_handle, -1);
+ if (ret < 0) {
+ return ret;
+ }
+ }
+
+ mstatus = curl_multi_perform((CURLM *)multi_handle, &still_running);
+ switch (mstatus) {
+ case CURLM_OK:
+ case CURLM_CALL_MULTI_PERFORM:
+ break;
+ default:
+ dout(20) << "curl_multi_perform returned: " << mstatus << dendl;
+ return -EINVAL;
+ }
+ int msgs_left;
+ CURLMsg *msg;
+ while ((msg = curl_multi_info_read((CURLM *)multi_handle, &msgs_left))) {
+ if (msg->msg == CURLMSG_DONE) {
+ CURL *e = msg->easy_handle;
+ rgw_http_req_data *req_data;
+ curl_easy_getinfo(e, CURLINFO_PRIVATE, (void **)&req_data);
+
+ long http_status;
+ curl_easy_getinfo(e, CURLINFO_RESPONSE_CODE, (void **)&http_status);
+
+ int status = rgw_http_error_to_errno(http_status);
+ int result = msg->data.result;
+ finish_request(req_data, status);
+ switch (result) {
+ case CURLE_OK:
+ break;
+ default:
+ dout(20) << "ERROR: msg->data.result=" << result << dendl;
+ return -EIO;
+ }
+ }
+ }
+ } while (mstatus == CURLM_CALL_MULTI_PERFORM);
+
+ *done = (still_running == 0);
+
+ return 0;
+}
+
+/*
+ * the synchronous, non-threaded request processing completion method.
+ */
+int RGWHTTPManager::complete_requests()
+{
+ bool done = false;
+ int ret;
+ do {
+ ret = process_requests(true, &done);
+ } while (!done && !ret);
+
+ return ret;
+}
+
+int RGWHTTPManager::set_threaded()
+{
+ int r = pipe(thread_pipe);
+ if (r < 0) {
+ r = -errno;
+ ldout(cct, 0) << "ERROR: pipe() returned errno=" << r << dendl;
+ return r;
+ }
+
+ // enable non-blocking reads
+ r = ::fcntl(thread_pipe[0], F_SETFL, O_NONBLOCK);
+ if (r < 0) {
+ r = -errno;
+ ldout(cct, 0) << "ERROR: fcntl() returned errno=" << r << dendl;
+ TEMP_FAILURE_RETRY(::close(thread_pipe[0]));
+ TEMP_FAILURE_RETRY(::close(thread_pipe[1]));
+ return r;
+ }
+
+#ifdef HAVE_CURL_MULTI_WAIT
+ // on first initialization, use this pipe to detect whether we're using a
+ // buggy version of libcurl
+ std::call_once(detect_flag, detect_curl_multi_wait_bug, cct,
+ static_cast<CURLM*>(multi_handle),
+ thread_pipe[1], thread_pipe[0]);
+#endif
+
+ is_threaded = true;
+ reqs_thread = new ReqsThread(this);
+ reqs_thread->create("http_manager");
+ return 0;
+}
+
+void RGWHTTPManager::stop()
+{
+ if (is_stopped) {
+ return;
+ }
+
+ is_stopped = true;
+
+ if (is_threaded) {
+ going_down = true;
+ signal_thread();
+ reqs_thread->join();
+ delete reqs_thread;
+ TEMP_FAILURE_RETRY(::close(thread_pipe[1]));
+ TEMP_FAILURE_RETRY(::close(thread_pipe[0]));
+ }
+}
+
+int RGWHTTPManager::signal_thread()
+{
+ uint32_t buf = 0;
+ int ret = write(thread_pipe[1], (void *)&buf, sizeof(buf));
+ if (ret < 0) {
+ ret = -errno;
+ ldout(cct, 0) << "ERROR: " << __func__ << ": write() returned ret=" << ret << dendl;
+ return ret;
+ }
+ return 0;
+}
+
+void *RGWHTTPManager::reqs_thread_entry()
+{
+ int still_running;
+ int mstatus;
+
+ ldout(cct, 20) << __func__ << ": start" << dendl;
+
+ while (!going_down) {
+ int ret = do_curl_wait(cct, (CURLM *)multi_handle, thread_pipe[0]);
+ if (ret < 0) {
+ dout(0) << "ERROR: do_curl_wait() returned: " << ret << dendl;
+ return NULL;
+ }
+
+ manage_pending_requests();
+
+ mstatus = curl_multi_perform((CURLM *)multi_handle, &still_running);
+ switch (mstatus) {
+ case CURLM_OK:
+ case CURLM_CALL_MULTI_PERFORM:
+ break;
+ default:
+ dout(10) << "curl_multi_perform returned: " << mstatus << dendl;
+ break;
+ }
+ int msgs_left;
+ CURLMsg *msg;
+ while ((msg = curl_multi_info_read((CURLM *)multi_handle, &msgs_left))) {
+ if (msg->msg == CURLMSG_DONE) {
+ int result = msg->data.result;
+ CURL *e = msg->easy_handle;
+ rgw_http_req_data *req_data;
+ curl_easy_getinfo(e, CURLINFO_PRIVATE, (void **)&req_data);
+ curl_multi_remove_handle((CURLM *)multi_handle, e);
+
+ long http_status;
+ curl_easy_getinfo(e, CURLINFO_RESPONSE_CODE, (void **)&http_status);
+
+ int status = rgw_http_error_to_errno(http_status);
+ if (result != CURLE_OK && http_status == 0) {
+ status = -EAGAIN;
+ }
+ int id = req_data->id;
+ finish_request(req_data, status);
+ switch (result) {
+ case CURLE_OK:
+ break;
+ default:
+ dout(20) << "ERROR: msg->data.result=" << result << " req_data->id=" << id << " http_status=" << http_status << dendl;
+ break;
+ }
+ }
+ }
+ }
+
+
+ RWLock::WLocker rl(reqs_lock);
+ for (auto r : unregistered_reqs) {
+ _finish_request(r, -ECANCELED);
+ }
+
+ unregistered_reqs.clear();
+
+ auto all_reqs = std::move(reqs);
+ for (auto iter : all_reqs) {
+ _finish_request(iter.second, -ECANCELED);
+ }
+
+ reqs.clear();
+
+ if (completion_mgr) {
+ completion_mgr->go_down();
+ }
+
+ return 0;
+}
+
+
Code Review / stor4nfv.git / blobdiff