8 #include "serverpool.h"
10 #include "udpstream.h"
17 ServerPool::ServerPool(int size)
18 : servers(new Server[size]),
25 ServerPool::~ServerPool()
29 for (size_t i = 0; i < udp_streams.size(); ++i) {
30 delete udp_streams[i];
34 CubemapStateProto ServerPool::serialize()
36 CubemapStateProto state;
38 for (int i = 0; i < num_servers; ++i) {
39 CubemapStateProto local_state = servers[i].serialize();
41 // The stream state should be identical between the servers, so we only store it once,
42 // save for the fds, which we keep around to distribute to the servers after re-exec.
44 state.mutable_streams()->MergeFrom(local_state.streams());
46 assert(state.streams_size() == local_state.streams_size());
47 for (int j = 0; j < local_state.streams_size(); ++j) {
48 assert(local_state.streams(j).data_fds_size() == 1);
49 state.mutable_streams(j)->add_data_fds(local_state.streams(j).data_fds(0));
52 for (int j = 0; j < local_state.clients_size(); ++j) {
53 state.add_clients()->MergeFrom(local_state.clients(j));
60 void ServerPool::add_client(int sock)
62 servers[clients_added++ % num_servers].add_client_deferred(sock);
65 void ServerPool::add_client_from_serialized(const ClientProto &client)
67 servers[clients_added++ % num_servers].add_client_from_serialized(client);
70 int ServerPool::lookup_stream_by_url(const string &url) const
72 assert(servers != NULL);
73 return servers[0].lookup_stream_by_url(url);
76 int ServerPool::add_stream(const string &url, size_t backlog_size, size_t prebuffering_bytes, Stream::Encoding encoding, Stream::Encoding src_encoding)
78 // Adding more HTTP streams after UDP streams would cause the UDP stream
79 // indices to move around, which is obviously not good.
80 assert(udp_streams.empty());
82 for (int i = 0; i < num_servers; ++i) {
83 int stream_index = servers[i].add_stream(url, backlog_size, prebuffering_bytes, encoding, src_encoding);
84 assert(stream_index == num_http_streams);
86 return num_http_streams++;
89 int ServerPool::add_stream_from_serialized(const StreamProto &stream, const vector<int> &data_fds)
91 // Adding more HTTP streams after UDP streams would cause the UDP stream
92 // indices to move around, which is obviously not good.
93 assert(udp_streams.empty());
95 assert(!data_fds.empty());
97 for (int i = 0; i < num_servers; ++i) {
99 if (i < int(data_fds.size())) {
100 // Reuse one of the existing file descriptors.
101 data_fd = data_fds[i];
103 // Clone the first one.
104 if (contents.empty()) {
105 if (!read_tempfile(data_fds[0], &contents)) {
109 data_fd = make_tempfile(contents);
112 int stream_index = servers[i].add_stream_from_serialized(stream, data_fd);
113 assert(stream_index == num_http_streams);
116 // Close and delete any leftovers, if the number of servers was reduced.
117 for (size_t i = num_servers; i < data_fds.size(); ++i) {
118 safe_close(data_fds[i]); // Implicitly deletes the file.
121 return num_http_streams++;
124 int ServerPool::add_udpstream(const sockaddr_in6 &dst, int pacing_rate, int ttl, int multicast_iface_index)
126 udp_streams.push_back(new UDPStream(dst, pacing_rate, ttl, multicast_iface_index));
127 return num_http_streams + udp_streams.size() - 1;
130 void ServerPool::set_header(int stream_index, const string &http_header, const string &stream_header)
132 assert(stream_index >= 0 && stream_index < ssize_t(num_http_streams + udp_streams.size()));
134 if (stream_index >= num_http_streams) {
135 // UDP stream. TODO: Log which stream this is.
136 if (!stream_header.empty()) {
137 log(WARNING, "Trying to send stream format with headers to a UDP destination. This is unlikely to work well.");
140 // Ignore the HTTP header.
145 for (int i = 0; i < num_servers; ++i) {
146 servers[i].set_header(stream_index, http_header, stream_header);
150 void ServerPool::add_data(int stream_index, const char *data, size_t bytes, uint16_t metacube_flags)
152 assert(stream_index >= 0 && stream_index < ssize_t(num_http_streams + udp_streams.size()));
154 if (stream_index >= num_http_streams) {
156 udp_streams[stream_index - num_http_streams]->send(data, bytes);
161 for (int i = 0; i < num_servers; ++i) {
162 servers[i].add_data_deferred(stream_index, data, bytes, metacube_flags);
166 void ServerPool::add_gen204(const std::string &url, const std::string &allow_origin)
168 for (int i = 0; i < num_servers; ++i) {
169 servers[i].add_gen204(url, allow_origin);
173 void ServerPool::run()
175 for (int i = 0; i < num_servers; ++i) {
180 void ServerPool::stop()
182 for (int i = 0; i < num_servers; ++i) {
187 vector<ClientStats> ServerPool::get_client_stats() const
189 vector<ClientStats> ret;
190 for (int i = 0; i < num_servers; ++i) {
191 vector<ClientStats> stats = servers[i].get_client_stats();
192 ret.insert(ret.end(), stats.begin(), stats.end());
197 void ServerPool::set_pacing_rate(int stream_index, uint32_t pacing_rate)
199 for (int i = 0; i < num_servers; ++i) {
200 servers[i].set_pacing_rate(stream_index, pacing_rate);
204 void ServerPool::set_backlog_size(int stream_index, size_t new_size)
206 for (int i = 0; i < num_servers; ++i) {
207 servers[i].set_backlog_size(stream_index, new_size);
211 void ServerPool::set_prebuffering_bytes(int stream_index, size_t new_amount)
213 for (int i = 0; i < num_servers; ++i) {
214 servers[i].set_prebuffering_bytes(stream_index, new_amount);
218 void ServerPool::set_encoding(int stream_index, Stream::Encoding encoding)
220 for (int i = 0; i < num_servers; ++i) {
221 servers[i].set_encoding(stream_index, encoding);
225 void ServerPool::set_src_encoding(int stream_index, Stream::Encoding encoding)
227 for (int i = 0; i < num_servers; ++i) {
228 servers[i].set_src_encoding(stream_index, encoding);