]> git.sesse.net Git - cubemap/blobdiff - main.cpp
Drop NO_LEVEL; it does not look very pretty now.
[cubemap] / main.cpp
index 95a72b83f00440bf92b612a30bdbba208329d9f7..0c58f41d013d72a65a93a6224eaa93dc8fe4eb97 100644 (file)
--- a/main.cpp
+++ b/main.cpp
@@ -18,6 +18,7 @@
 #include "acceptor.h"
 #include "config.h"
 #include "input.h"
+#include "log.h"
 #include "markpool.h"
 #include "serverpool.h"
 #include "state.pb.h"
@@ -108,7 +109,7 @@ vector<Input *> create_inputs(const Config &config,
                if (deserialized_input_it != deserialized_inputs->end()) {
                        input = deserialized_input_it->second;
                        if (input->get_url() != src) {
-                               fprintf(stderr, "INFO: Stream '%s' has changed URL from '%s' to '%s', restarting input.\n",
+                               log(INFO, "Stream '%s' has changed URL from '%s' to '%s', restarting input.",
                                        stream_id.c_str(), input->get_url().c_str(), src.c_str());
                                input->close_socket();
                                delete input;
@@ -119,7 +120,7 @@ vector<Input *> create_inputs(const Config &config,
                if (input == NULL) {
                        input = create_input(stream_id, src);
                        if (input == NULL) {
-                               fprintf(stderr, "ERROR: did not understand URL '%s', clients will not get any data.\n",
+                               log(ERROR, "did not understand URL '%s', clients will not get any data.",
                                        src.c_str());
                                continue;
                        }
@@ -162,9 +163,9 @@ void create_streams(const Config &config,
             stream_it != expecting_stream_ids.end();
             ++stream_it) {
                string stream_id = *stream_it;
-               fprintf(stderr, "WARNING: stream '%s' disappeared from the configuration file.\n",
-                       stream_id.c_str());
-               fprintf(stderr, "         It will not be deleted, but clients will not get any new inputs.\n");
+               log(WARNING, "stream '%s' disappeared from the configuration file. "
+                            "It will not be deleted, but clients will not get any new inputs.",
+                            stream_id.c_str());
                if (deserialized_inputs->count(stream_id) != 0) {
                        delete (*deserialized_inputs)[stream_id];
                        deserialized_inputs->erase(stream_id);
@@ -172,6 +173,22 @@ void create_streams(const Config &config,
        }
 }
        
+void open_logs(const vector<LogConfig> &log_destinations)
+{
+       for (size_t i = 0; i < log_destinations.size(); ++i) {
+               if (log_destinations[i].type == LogConfig::LOG_TYPE_FILE) {
+                       add_log_destination_file(log_destinations[i].filename);
+               } else if (log_destinations[i].type == LogConfig::LOG_TYPE_CONSOLE) {
+                       add_log_destination_console();
+               } else if (log_destinations[i].type == LogConfig::LOG_TYPE_SYSLOG) {
+                       add_log_destination_syslog();
+               } else {
+                       assert(false);
+               }
+       }
+       start_logging();
+}
+       
 bool dry_run_config(const std::string &argv0, const std::string &config_filename)
 {
        char *argv0_copy = strdup(argv0.c_str());
@@ -180,14 +197,14 @@ bool dry_run_config(const std::string &argv0, const std::string &config_filename
        pid_t pid = fork();
        switch (pid) {
        case -1:
-               perror("fork()");
+               log_perror("fork()");
                free(argv0_copy);
                free(config_filename_copy);
                return false;
        case 0:
                // Child.
                execlp(argv0_copy, argv0_copy, "--test-config", config_filename_copy, NULL);
-               perror(argv0_copy);
+               log_perror(argv0_copy);
                _exit(1);
        default:
                // Parent.
@@ -204,7 +221,7 @@ bool dry_run_config(const std::string &argv0, const std::string &config_filename
        } while (err == -1 && errno == EINTR);
 
        if (err == -1) {
-               perror("waitpid()");
+               log_perror("waitpid()");
                return false;
        }       
 
@@ -214,6 +231,7 @@ bool dry_run_config(const std::string &argv0, const std::string &config_filename
 int main(int argc, char **argv)
 {
        signal(SIGHUP, hup);
+       signal(SIGPIPE, SIG_IGN);
        
        // Parse options.
        int state_fd = -1;
@@ -255,7 +273,10 @@ int main(int argc, char **argv)
        }
 
 start:
-       fprintf(stderr, "\nCubemap " SERVER_VERSION " starting.\n");
+       // Open logs as soon as possible.
+       open_logs(config.log_destinations);
+
+       log(INFO, "Cubemap " SERVER_VERSION " starting.");
        servers = new ServerPool(config.num_servers);
 
        CubemapStateProto loaded_state;
@@ -264,13 +285,13 @@ start:
        map<string, Input *> deserialized_inputs;
        map<int, Acceptor *> deserialized_acceptors;
        if (state_fd != -1) {
-               fprintf(stderr, "Deserializing state from previous process... ");
+               log(INFO, "Deserializing state from previous process...");
                string serialized;
                if (!read_tempfile(state_fd, &serialized)) {
                        exit(1);
                }
                if (!loaded_state.ParseFromString(serialized)) {
-                       fprintf(stderr, "ERROR: Failed deserialization of state.\n");
+                       log(ERROR, "Failed deserialization of state.");
                        exit(1);
                }
 
@@ -297,14 +318,12 @@ start:
                                new Acceptor(loaded_state.acceptors(i))));
                }
 
-               fprintf(stderr, "done.\n");
+               log(INFO, "Deserialization done.");
        }
 
        // Find all streams in the configuration file, and create them.
        create_streams(config, deserialized_stream_ids, &deserialized_inputs);
 
-       servers->run();
-
        vector<Acceptor *> acceptors = create_acceptors(config, &deserialized_acceptors);
        vector<Input *> inputs = create_inputs(config, &deserialized_inputs);
        
@@ -317,6 +336,8 @@ start:
        for (int i = 0; i < loaded_state.clients_size(); ++i) {
                servers->add_client_from_serialized(loaded_state.clients(i));
        }
+       
+       servers->run();
 
        // Start writing statistics.
        StatsThread *stats_thread = NULL;
@@ -333,7 +354,7 @@ start:
                // “glitch” period was, not counting of course reconnects if the configuration changed.
                double glitch_time = server_start.tv_sec - serialize_start.tv_sec +
                        1e-6 * (server_start.tv_usec - serialize_start.tv_usec);
-               fprintf(stderr, "Re-exec happened in approx. %.0f ms.\n", glitch_time * 1000.0);
+               log(INFO, "Re-exec happened in approx. %.0f ms.", glitch_time * 1000.0);
        }
 
        while (!hupped) {
@@ -354,7 +375,7 @@ start:
        }
        servers->stop();
 
-       fprintf(stderr, "Serializing state and re-execing...\n");
+       log(INFO, "Serializing state and re-execing...");
        CubemapStateProto state = collect_state(
                 serialize_start, acceptors, inputs, servers);
        string serialized;
@@ -364,20 +385,26 @@ start:
                exit(1);
        }
        delete servers;
+       shut_down_logging();
 
        if (!dry_run_config(argv[0], config_filename)) {
-               fprintf(stderr, "ERROR: %s --test-config failed. Restarting old version instead of new.\n", argv[0]);
+               open_logs(config.log_destinations);
+               log(ERROR, "%s --test-config failed. Restarting old version instead of new.", argv[0]);
                hupped = false;
+               shut_down_logging();
                goto start;
        }
+
         
        char buf[16];
        sprintf(buf, "%d", state_fd);
 
        for ( ;; ) {
                execlp(argv[0], argv[0], config_filename.c_str(), "--state", buf, NULL);
-               perror("execlp");
-               fprintf(stderr, "PANIC: re-exec of %s failed. Waiting 0.2 seconds and trying again...\n", argv[0]);
+               open_logs(config.log_destinations);
+               log_perror("execlp");
+               log(ERROR, "re-exec of %s failed. Waiting 0.2 seconds and trying again...", argv[0]);
+               shut_down_logging();
                usleep(200000);
        }
 }