3 #include <google/protobuf/repeated_field.h>
10 #include "serverpool.h"
16 ServerPool::ServerPool(int size)
17 : servers(new Server[size]),
24 ServerPool::~ServerPool()
28 for (size_t i = 0; i < udp_streams.size(); ++i) {
29 delete udp_streams[i];
33 CubemapStateProto ServerPool::serialize()
35 CubemapStateProto state;
37 for (int i = 0; i < num_servers; ++i) {
38 CubemapStateProto local_state = servers[i].serialize();
40 // The stream state should be identical between the servers, so we only store it once,
41 // save for the fds, which we keep around to distribute to the servers after re-exec.
43 state.mutable_streams()->MergeFrom(local_state.streams());
45 assert(state.streams_size() == local_state.streams_size());
46 for (int j = 0; j < local_state.streams_size(); ++j) {
47 assert(local_state.streams(j).data_fds_size() == 1);
48 state.mutable_streams(j)->add_data_fds(local_state.streams(j).data_fds(0));
51 for (int j = 0; j < local_state.clients_size(); ++j) {
52 state.add_clients()->MergeFrom(local_state.clients(j));
59 void ServerPool::add_client(int sock)
61 servers[clients_added++ % num_servers].add_client_deferred(sock);
64 void ServerPool::add_client_from_serialized(const ClientProto &client)
66 servers[clients_added++ % num_servers].add_client_from_serialized(client);
69 int ServerPool::lookup_stream_by_url(const std::string &url) const
71 assert(servers != NULL);
72 return servers[0].lookup_stream_by_url(url);
75 int ServerPool::add_stream(const string &url, size_t backlog_size, Stream::Encoding encoding)
77 // Adding more HTTP streams after UDP streams would cause the UDP stream
78 // indices to move around, which is obviously not good.
79 assert(udp_streams.empty());
81 for (int i = 0; i < num_servers; ++i) {
82 int stream_index = servers[i].add_stream(url, backlog_size, encoding);
83 assert(stream_index == num_http_streams);
85 return num_http_streams++;
88 int ServerPool::add_stream_from_serialized(const StreamProto &stream, const vector<int> &data_fds)
90 // Adding more HTTP streams after UDP streams would cause the UDP stream
91 // indices to move around, which is obviously not good.
92 assert(udp_streams.empty());
94 assert(!data_fds.empty());
96 for (int i = 0; i < num_servers; ++i) {
98 if (i < int(data_fds.size())) {
99 // Reuse one of the existing file descriptors.
100 data_fd = data_fds[i];
102 // Clone the first one.
103 if (contents.empty()) {
104 if (!read_tempfile(data_fds[0], &contents)) {
108 data_fd = make_tempfile(contents);
111 int stream_index = servers[i].add_stream_from_serialized(stream, data_fd);
112 assert(stream_index == num_http_streams);
115 // Close and delete any leftovers, if the number of servers was reduced.
116 for (size_t i = num_servers; i < data_fds.size(); ++i) {
117 safe_close(data_fds[i]); // Implicitly deletes the file.
120 return num_http_streams++;
123 int ServerPool::add_udpstream(const sockaddr_in6 &dst, MarkPool *mark_pool)
125 udp_streams.push_back(new UDPStream(dst, mark_pool));
126 return num_http_streams + udp_streams.size() - 1;
129 void ServerPool::set_header(int stream_index, const string &http_header, const string &stream_header)
131 assert(stream_index >= 0 && stream_index < ssize_t(num_http_streams + udp_streams.size()));
133 if (stream_index >= num_http_streams) {
134 // UDP stream. TODO: Log which stream this is.
135 if (!stream_header.empty()) {
136 log(WARNING, "Trying to send stream format with headers to a UDP destination. This is unlikely to work well.");
139 // Ignore the HTTP header.
144 for (int i = 0; i < num_servers; ++i) {
145 servers[i].set_header(stream_index, http_header, stream_header);
149 void ServerPool::add_data(int stream_index, const char *data, size_t bytes)
151 assert(stream_index >= 0 && stream_index < ssize_t(num_http_streams + udp_streams.size()));
153 if (stream_index >= num_http_streams) {
155 udp_streams[stream_index - num_http_streams]->send(data, bytes);
160 for (int i = 0; i < num_servers; ++i) {
161 servers[i].add_data_deferred(stream_index, data, bytes);
165 void ServerPool::run()
167 for (int i = 0; i < num_servers; ++i) {
172 void ServerPool::stop()
174 for (int i = 0; i < num_servers; ++i) {
179 vector<ClientStats> ServerPool::get_client_stats() const
181 vector<ClientStats> ret;
182 for (int i = 0; i < num_servers; ++i) {
183 vector<ClientStats> stats = servers[i].get_client_stats();
184 ret.insert(ret.end(), stats.begin(), stats.end());
189 void ServerPool::set_mark_pool(int stream_index, MarkPool *mark_pool)
191 for (int i = 0; i < num_servers; ++i) {
192 servers[i].set_mark_pool(stream_index, mark_pool);
196 void ServerPool::set_backlog_size(int stream_index, size_t new_size)
198 for (int i = 0; i < num_servers; ++i) {
199 servers[i].set_backlog_size(stream_index, new_size);
203 void ServerPool::set_encoding(int stream_index, Stream::Encoding encoding)
205 for (int i = 0; i < num_servers; ++i) {
206 servers[i].set_encoding(stream_index, encoding);