6 #include "serverpool.h"
12 ServerPool::ServerPool(int size)
13 : servers(new Server[size]),
20 ServerPool::~ServerPool()
24 for (size_t i = 0; i < udp_streams.size(); ++i) {
25 delete udp_streams[i];
29 CubemapStateProto ServerPool::serialize()
31 CubemapStateProto state;
33 for (int i = 0; i < num_servers; ++i) {
34 CubemapStateProto local_state = servers[i].serialize();
36 // The stream state should be identical between the servers, so we only store it once,
37 // save for the fds, which we keep around to distribute to the servers after re-exec.
39 state.mutable_streams()->MergeFrom(local_state.streams());
41 assert(state.streams_size() == local_state.streams_size());
42 for (int j = 0; j < local_state.streams_size(); ++j) {
43 assert(local_state.streams(j).data_fds_size() == 1);
44 state.mutable_streams(j)->add_data_fds(local_state.streams(j).data_fds(0));
47 for (int j = 0; j < local_state.clients_size(); ++j) {
48 state.add_clients()->MergeFrom(local_state.clients(j));
55 void ServerPool::add_client(int sock)
57 servers[clients_added++ % num_servers].add_client_deferred(sock);
60 void ServerPool::add_client_from_serialized(const ClientProto &client)
62 servers[clients_added++ % num_servers].add_client_from_serialized(client);
65 int ServerPool::lookup_stream_by_url(const std::string &url) const
67 assert(servers != NULL);
68 return servers[0].lookup_stream_by_url(url);
71 int ServerPool::add_stream(const string &url, size_t backlog_size, Stream::Encoding encoding)
73 // Adding more HTTP streams after UDP streams would cause the UDP stream
74 // indices to move around, which is obviously not good.
75 assert(udp_streams.empty());
77 for (int i = 0; i < num_servers; ++i) {
78 int stream_index = servers[i].add_stream(url, backlog_size, encoding);
79 assert(stream_index == num_http_streams);
81 return num_http_streams++;
84 int ServerPool::add_stream_from_serialized(const StreamProto &stream, const vector<int> &data_fds)
86 // Adding more HTTP streams after UDP streams would cause the UDP stream
87 // indices to move around, which is obviously not good.
88 assert(udp_streams.empty());
90 assert(!data_fds.empty());
92 for (int i = 0; i < num_servers; ++i) {
94 if (i < int(data_fds.size())) {
95 // Reuse one of the existing file descriptors.
96 data_fd = data_fds[i];
98 // Clone the first one.
99 if (contents.empty()) {
100 if (!read_tempfile(data_fds[0], &contents)) {
104 data_fd = make_tempfile(contents);
107 int stream_index = servers[i].add_stream_from_serialized(stream, data_fd);
108 assert(stream_index == num_http_streams);
111 // Close and delete any leftovers, if the number of servers was reduced.
112 for (size_t i = num_servers; i < data_fds.size(); ++i) {
113 safe_close(data_fds[i]); // Implicitly deletes the file.
116 return num_http_streams++;
119 int ServerPool::add_udpstream(const sockaddr_in6 &dst, MarkPool *mark_pool)
121 udp_streams.push_back(new UDPStream(dst, mark_pool));
122 return num_http_streams + udp_streams.size() - 1;
125 void ServerPool::set_header(int stream_index, const string &http_header, const string &stream_header)
127 assert(stream_index >= 0 && stream_index < ssize_t(num_http_streams + udp_streams.size()));
129 if (stream_index >= num_http_streams) {
130 // UDP stream. TODO: Log which stream this is.
131 if (!stream_header.empty()) {
132 log(WARNING, "Trying to send stream format with headers to a UDP destination. This is unlikely to work well.");
135 // Ignore the HTTP header.
140 for (int i = 0; i < num_servers; ++i) {
141 servers[i].set_header(stream_index, http_header, stream_header);
145 void ServerPool::add_data(int stream_index, const char *data, size_t bytes)
147 assert(stream_index >= 0 && stream_index < ssize_t(num_http_streams + udp_streams.size()));
149 if (stream_index >= num_http_streams) {
151 udp_streams[stream_index - num_http_streams]->send(data, bytes);
156 for (int i = 0; i < num_servers; ++i) {
157 servers[i].add_data_deferred(stream_index, data, bytes);
161 void ServerPool::run()
163 for (int i = 0; i < num_servers; ++i) {
168 void ServerPool::stop()
170 for (int i = 0; i < num_servers; ++i) {
175 vector<ClientStats> ServerPool::get_client_stats() const
177 vector<ClientStats> ret;
178 for (int i = 0; i < num_servers; ++i) {
179 vector<ClientStats> stats = servers[i].get_client_stats();
180 ret.insert(ret.end(), stats.begin(), stats.end());
185 void ServerPool::set_mark_pool(int stream_index, MarkPool *mark_pool)
187 for (int i = 0; i < num_servers; ++i) {
188 servers[i].set_mark_pool(stream_index, mark_pool);
192 void ServerPool::set_backlog_size(int stream_index, size_t new_size)
194 for (int i = 0; i < num_servers; ++i) {
195 servers[i].set_backlog_size(stream_index, new_size);
199 void ServerPool::set_encoding(int stream_index, Stream::Encoding encoding)
201 for (int i = 0; i < num_servers; ++i) {
202 servers[i].set_encoding(stream_index, encoding);