8 #include "serverpool.h"
10 #include "udpstream.h"
17 ServerPool::ServerPool(int size)
18 : servers(new Server[size]),
25 CubemapStateProto ServerPool::serialize()
27 CubemapStateProto state;
29 for (int i = 0; i < num_servers; ++i) {
30 CubemapStateProto local_state = servers[i].serialize();
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);
51 void ServerPool::add_client(int sock, Acceptor *acceptor)
53 servers[clients_added++ % num_servers].add_client_deferred(sock, acceptor);
56 void ServerPool::add_client_from_serialized(const ClientProto &client)
58 servers[clients_added++ % num_servers].add_client_from_serialized(client);
61 int ServerPool::lookup_stream_by_url(const string &url) const
63 assert(servers != NULL);
64 return servers[0].lookup_stream_by_url(url);
67 int ServerPool::add_stream(const string &url, size_t backlog_size, size_t prebuffering_bytes, Stream::Encoding encoding, Stream::Encoding src_encoding)
69 // Adding more HTTP streams after UDP streams would cause the UDP stream
70 // indices to move around, which is obviously not good.
71 assert(udp_streams.empty());
73 for (int i = 0; i < num_servers; ++i) {
74 int stream_index = servers[i].add_stream(url, backlog_size, prebuffering_bytes, encoding, src_encoding);
75 assert(stream_index == num_http_streams);
77 return num_http_streams++;
80 int ServerPool::add_stream_from_serialized(const StreamProto &stream, const vector<int> &data_fds)
82 // Adding more HTTP streams after UDP streams would cause the UDP stream
83 // indices to move around, which is obviously not good.
84 assert(udp_streams.empty());
86 assert(!data_fds.empty());
88 for (int i = 0; i < num_servers; ++i) {
90 if (i < int(data_fds.size())) {
91 // Reuse one of the existing file descriptors.
92 data_fd = data_fds[i];
94 // Clone the first one.
95 if (contents.empty()) {
96 if (!read_tempfile(data_fds[0], &contents)) {
100 data_fd = make_tempfile(contents);
103 int stream_index = servers[i].add_stream_from_serialized(stream, data_fd);
104 assert(stream_index == num_http_streams);
107 // Close and delete any leftovers, if the number of servers was reduced.
108 for (size_t i = num_servers; i < data_fds.size(); ++i) {
109 safe_close(data_fds[i]); // Implicitly deletes the file.
112 return num_http_streams++;
115 int ServerPool::add_udpstream(const sockaddr_in6 &dst, int pacing_rate, int ttl, int multicast_iface_index)
117 udp_streams.emplace_back(new UDPStream(dst, pacing_rate, ttl, multicast_iface_index));
118 return num_http_streams + udp_streams.size() - 1;
121 void ServerPool::set_header(int stream_index, const string &http_header, const string &stream_header)
123 assert(stream_index >= 0 && stream_index < ssize_t(num_http_streams + udp_streams.size()));
125 if (stream_index >= num_http_streams) {
126 // UDP stream. TODO: Log which stream this is.
127 if (!stream_header.empty()) {
128 log(WARNING, "Trying to send stream format with headers to a UDP destination. This is unlikely to work well.");
131 // Ignore the HTTP header.
136 for (int i = 0; i < num_servers; ++i) {
137 servers[i].set_header(stream_index, http_header, stream_header);
141 void ServerPool::add_data(int stream_index, const char *data, size_t bytes, uint16_t metacube_flags)
143 assert(stream_index >= 0 && stream_index < ssize_t(num_http_streams + udp_streams.size()));
145 if (stream_index >= num_http_streams) {
147 udp_streams[stream_index - num_http_streams]->send(data, bytes);
152 for (int i = 0; i < num_servers; ++i) {
153 servers[i].add_data_deferred(stream_index, data, bytes, metacube_flags);
157 void ServerPool::add_gen204(const std::string &url, const std::string &allow_origin)
159 for (int i = 0; i < num_servers; ++i) {
160 servers[i].add_gen204(url, allow_origin);
164 void ServerPool::create_tls_context_for_acceptor(const Acceptor *acceptor)
166 for (int i = 0; i < num_servers; ++i) {
167 servers[i].create_tls_context_for_acceptor(acceptor);
171 void ServerPool::run()
173 for (int i = 0; i < num_servers; ++i) {
178 void ServerPool::stop()
180 for (int i = 0; i < num_servers; ++i) {
185 vector<ClientStats> ServerPool::get_client_stats() const
187 vector<ClientStats> ret;
188 for (int i = 0; i < num_servers; ++i) {
189 vector<ClientStats> stats = servers[i].get_client_stats();
190 ret.insert(ret.end(), stats.begin(), stats.end());
195 void ServerPool::set_pacing_rate(int stream_index, uint32_t pacing_rate)
197 for (int i = 0; i < num_servers; ++i) {
198 servers[i].set_pacing_rate(stream_index, pacing_rate);
202 void ServerPool::set_backlog_size(int stream_index, size_t new_size)
204 for (int i = 0; i < num_servers; ++i) {
205 servers[i].set_backlog_size(stream_index, new_size);
209 void ServerPool::set_prebuffering_bytes(int stream_index, size_t new_amount)
211 for (int i = 0; i < num_servers; ++i) {
212 servers[i].set_prebuffering_bytes(stream_index, new_amount);
216 void ServerPool::set_encoding(int stream_index, Stream::Encoding encoding)
218 for (int i = 0; i < num_servers; ++i) {
219 servers[i].set_encoding(stream_index, encoding);
223 void ServerPool::set_src_encoding(int stream_index, Stream::Encoding encoding)
225 for (int i = 0; i < num_servers; ++i) {
226 servers[i].set_src_encoding(stream_index, encoding);