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 for (int i = 0; i < num_servers; ++i) {
28 CubemapStateProto local_state = servers[i].serialize();
30 // The stream state should be identical between the servers, so we only store it once,
31 // save for the fds, which we keep around to distribute to the servers after re-exec.
33 state.mutable_streams()->MergeFrom(local_state.streams());
35 assert(state.streams_size() == local_state.streams_size());
36 for (int j = 0; j < local_state.streams_size(); ++j) {
37 assert(local_state.streams(j).data_fds_size() == 1);
38 state.mutable_streams(j)->add_data_fds(local_state.streams(j).data_fds(0));
41 for (const ClientProto &client : local_state.clients()) {
42 state.add_clients()->MergeFrom(client);
49 void ServerPool::add_client(int sock, Acceptor *acceptor)
51 servers[clients_added++ % num_servers].add_client_deferred(sock, acceptor);
54 void ServerPool::add_client_from_serialized(const ClientProto &client)
56 servers[clients_added++ % num_servers].add_client_from_serialized(client);
59 int ServerPool::lookup_stream_by_url(const string &url) const
61 assert(servers != nullptr);
62 return servers[0].lookup_stream_by_url(url);
65 int ServerPool::add_stream(const string &url, size_t backlog_size, size_t prebuffering_bytes, Stream::Encoding encoding, Stream::Encoding src_encoding)
67 // Adding more HTTP streams after UDP streams would cause the UDP stream
68 // indices to move around, which is obviously not good.
69 assert(udp_streams.empty());
71 for (int i = 0; i < num_servers; ++i) {
72 int stream_index = servers[i].add_stream(url, backlog_size, prebuffering_bytes, encoding, src_encoding);
73 assert(stream_index == num_http_streams);
75 return num_http_streams++;
78 int ServerPool::add_stream_from_serialized(const StreamProto &stream, const vector<int> &data_fds)
80 // Adding more HTTP streams after UDP streams would cause the UDP stream
81 // indices to move around, which is obviously not good.
82 assert(udp_streams.empty());
84 assert(!data_fds.empty());
86 for (int i = 0; i < num_servers; ++i) {
88 if (i < int(data_fds.size())) {
89 // Reuse one of the existing file descriptors.
90 data_fd = data_fds[i];
92 // Clone the first one.
93 if (contents.empty()) {
94 if (!read_tempfile(data_fds[0], &contents)) {
98 data_fd = make_tempfile(contents);
101 int stream_index = servers[i].add_stream_from_serialized(stream, data_fd);
102 assert(stream_index == num_http_streams);
105 // Close and delete any leftovers, if the number of servers was reduced.
106 for (size_t i = num_servers; i < data_fds.size(); ++i) {
107 safe_close(data_fds[i]); // Implicitly deletes the file.
110 return num_http_streams++;
113 int ServerPool::add_udpstream(const sockaddr_in6 &dst, int pacing_rate, int ttl, int multicast_iface_index)
115 udp_streams.emplace_back(new UDPStream(dst, pacing_rate, ttl, multicast_iface_index));
116 return num_http_streams + udp_streams.size() - 1;
119 void ServerPool::set_header(int stream_index, const string &http_header, const string &stream_header)
121 assert(stream_index >= 0 && stream_index < ssize_t(num_http_streams + udp_streams.size()));
123 if (stream_index >= num_http_streams) {
124 // UDP stream. TODO: Log which stream this is.
125 if (!stream_header.empty()) {
126 log(WARNING, "Trying to send stream format with headers to a UDP destination. This is unlikely to work well.");
129 // Ignore the HTTP header.
134 for (int i = 0; i < num_servers; ++i) {
135 servers[i].set_header(stream_index, http_header, stream_header);
139 void ServerPool::add_data(int stream_index, const char *data, size_t bytes, uint16_t metacube_flags)
141 assert(stream_index >= 0 && stream_index < ssize_t(num_http_streams + udp_streams.size()));
143 if (stream_index >= num_http_streams) {
145 udp_streams[stream_index - num_http_streams]->send(data, bytes);
150 for (int i = 0; i < num_servers; ++i) {
151 servers[i].add_data_deferred(stream_index, data, bytes, metacube_flags);
155 void ServerPool::add_gen204(const std::string &url, const std::string &allow_origin)
157 for (int i = 0; i < num_servers; ++i) {
158 servers[i].add_gen204(url, allow_origin);
162 void ServerPool::create_tls_context_for_acceptor(const Acceptor *acceptor)
164 for (int i = 0; i < num_servers; ++i) {
165 servers[i].create_tls_context_for_acceptor(acceptor);
169 void ServerPool::run()
171 for (int i = 0; i < num_servers; ++i) {
176 void ServerPool::stop()
178 for (int i = 0; i < num_servers; ++i) {
183 vector<ClientStats> ServerPool::get_client_stats() const
185 vector<ClientStats> ret;
186 for (int i = 0; i < num_servers; ++i) {
187 vector<ClientStats> stats = servers[i].get_client_stats();
188 ret.insert(ret.end(), stats.begin(), stats.end());
193 void ServerPool::set_pacing_rate(int stream_index, uint32_t pacing_rate)
195 for (int i = 0; i < num_servers; ++i) {
196 servers[i].set_pacing_rate(stream_index, pacing_rate);
200 void ServerPool::set_backlog_size(int stream_index, size_t new_size)
202 for (int i = 0; i < num_servers; ++i) {
203 servers[i].set_backlog_size(stream_index, new_size);
207 void ServerPool::set_prebuffering_bytes(int stream_index, size_t new_amount)
209 for (int i = 0; i < num_servers; ++i) {
210 servers[i].set_prebuffering_bytes(stream_index, new_amount);
214 void ServerPool::set_encoding(int stream_index, Stream::Encoding encoding)
216 for (int i = 0; i < num_servers; ++i) {
217 servers[i].set_encoding(stream_index, encoding);
221 void ServerPool::set_src_encoding(int stream_index, Stream::Encoding encoding)
223 for (int i = 0; i < num_servers; ++i) {
224 servers[i].set_src_encoding(stream_index, encoding);