8 #include "serverpool.h"
10 #include "udpstream.h"
17 ServerPool::ServerPool(int size)
18 : servers(new Server[size]),
23 CubemapStateProto ServerPool::serialize()
25 CubemapStateProto state;
27 unordered_map<const string *, size_t> short_response_pool;
29 for (int i = 0; i < num_servers; ++i) {
30 CubemapStateProto local_state = servers[i].serialize(&short_response_pool);
32 // The stream state should be identical between the servers, so we only store it once,
33 // save for the fds, which we keep around to distribute to the servers after re-exec.
35 state.mutable_streams()->MergeFrom(local_state.streams());
37 assert(state.streams_size() == local_state.streams_size());
38 for (int j = 0; j < local_state.streams_size(); ++j) {
39 assert(local_state.streams(j).data_fds_size() == 1);
40 state.mutable_streams(j)->add_data_fds(local_state.streams(j).data_fds(0));
43 for (const ClientProto &client : local_state.clients()) {
44 state.add_clients()->MergeFrom(client);
48 for (size_t i = 0; i < short_response_pool.size(); ++i) {
49 state.mutable_short_response_pool()->Add();
51 for (const auto &string_and_index : short_response_pool) {
52 state.mutable_short_response_pool(string_and_index.second)->set_header_or_short_response(*string_and_index.first);
58 void ServerPool::add_client(int sock, Acceptor *acceptor)
60 servers[clients_added++ % num_servers].add_client_deferred(sock, acceptor);
63 void ServerPool::add_client_from_serialized(const ClientProto &client, const std::vector<std::shared_ptr<const std::string>> &short_responses)
65 servers[clients_added++ % num_servers].add_client_from_serialized(client, short_responses);
68 int ServerPool::lookup_stream_by_url(const string &url) const
70 assert(servers != nullptr);
71 return servers[0].lookup_stream_by_url(url);
74 int ServerPool::add_stream(const string &url, size_t backlog_size, size_t prebuffering_bytes, Stream::Encoding encoding, Stream::Encoding src_encoding)
76 // Adding more HTTP streams after UDP streams would cause the UDP stream
77 // indices to move around, which is obviously not good.
78 assert(udp_streams.empty());
80 for (int i = 0; i < num_servers; ++i) {
81 int stream_index = servers[i].add_stream(url, backlog_size, prebuffering_bytes, encoding, src_encoding);
82 assert(stream_index == num_http_streams);
84 return num_http_streams++;
87 int ServerPool::add_stream_from_serialized(const StreamProto &stream, const vector<int> &data_fds)
89 // Adding more HTTP streams after UDP streams would cause the UDP stream
90 // indices to move around, which is obviously not good.
91 assert(udp_streams.empty());
93 assert(!data_fds.empty());
95 for (int i = 0; i < num_servers; ++i) {
97 if (i < int(data_fds.size())) {
98 // Reuse one of the existing file descriptors.
99 data_fd = data_fds[i];
101 // Clone the first one.
102 if (contents.empty()) {
103 if (!read_tempfile(data_fds[0], &contents)) {
107 data_fd = make_tempfile(contents);
110 int stream_index = servers[i].add_stream_from_serialized(stream, data_fd);
111 assert(stream_index == num_http_streams);
114 // Close and delete any leftovers, if the number of servers was reduced.
115 for (size_t i = num_servers; i < data_fds.size(); ++i) {
116 safe_close(data_fds[i]); // Implicitly deletes the file.
119 return num_http_streams++;
122 int ServerPool::add_udpstream(const sockaddr_in6 &dst, int pacing_rate, int ttl, int multicast_iface_index)
124 udp_streams.emplace_back(new UDPStream(dst, pacing_rate, ttl, multicast_iface_index));
125 return num_http_streams + udp_streams.size() - 1;
128 void ServerPool::set_header(int stream_index, const string &http_header, const string &stream_header)
130 assert(stream_index >= 0 && stream_index < ssize_t(num_http_streams + udp_streams.size()));
132 if (stream_index >= num_http_streams) {
133 // UDP stream. TODO: Log which stream this is.
134 if (!stream_header.empty()) {
135 log(WARNING, "Trying to send stream format with headers to a UDP destination. This is unlikely to work well.");
138 // Ignore the HTTP header.
143 for (int i = 0; i < num_servers; ++i) {
144 servers[i].set_header(stream_index, http_header, stream_header);
148 void ServerPool::add_data(int stream_index, const char *data, size_t bytes, uint16_t metacube_flags)
150 assert(stream_index >= 0 && stream_index < ssize_t(num_http_streams + udp_streams.size()));
152 if (stream_index >= num_http_streams) {
154 udp_streams[stream_index - num_http_streams]->send(data, bytes);
159 for (int i = 0; i < num_servers; ++i) {
160 servers[i].add_data_deferred(stream_index, data, bytes, metacube_flags);
164 void ServerPool::add_gen204(const std::string &url, const std::string &allow_origin)
166 for (int i = 0; i < num_servers; ++i) {
167 servers[i].add_gen204(url, allow_origin);
171 void ServerPool::create_tls_context_for_acceptor(const Acceptor *acceptor)
173 for (int i = 0; i < num_servers; ++i) {
174 servers[i].create_tls_context_for_acceptor(acceptor);
178 void ServerPool::run()
180 for (int i = 0; i < num_servers; ++i) {
185 void ServerPool::stop()
187 for (int i = 0; i < num_servers; ++i) {
192 vector<ClientStats> ServerPool::get_client_stats() const
194 vector<ClientStats> ret;
195 for (int i = 0; i < num_servers; ++i) {
196 vector<ClientStats> stats = servers[i].get_client_stats();
197 ret.insert(ret.end(), stats.begin(), stats.end());
202 void ServerPool::set_pacing_rate(int stream_index, uint32_t pacing_rate)
204 for (int i = 0; i < num_servers; ++i) {
205 servers[i].set_pacing_rate(stream_index, pacing_rate);
209 void ServerPool::set_backlog_size(int stream_index, size_t new_size)
211 for (int i = 0; i < num_servers; ++i) {
212 servers[i].set_backlog_size(stream_index, new_size);
216 void ServerPool::set_prebuffering_bytes(int stream_index, size_t new_amount)
218 for (int i = 0; i < num_servers; ++i) {
219 servers[i].set_prebuffering_bytes(stream_index, new_amount);
223 void ServerPool::set_encoding(int stream_index, Stream::Encoding encoding)
225 for (int i = 0; i < num_servers; ++i) {
226 servers[i].set_encoding(stream_index, encoding);
230 void ServerPool::set_src_encoding(int stream_index, Stream::Encoding encoding)
232 for (int i = 0; i < num_servers; ++i) {
233 servers[i].set_src_encoding(stream_index, encoding);