| // Copyright (c) 2010 The Chromium OS Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "metrics_daemon.h" |
| #include "metrics_library.h" |
| |
| #include <glib-object.h> |
| |
| extern "C" { |
| #include "marshal_void__string_boxed.h" |
| } |
| |
| #include <base/logging.h> |
| |
| #define SAFE_MESSAGE(e) ((e && e->message) ? e->message : "unknown error") |
| |
| MetricsDaemon::NetworkState |
| MetricsDaemon::network_states_[MetricsDaemon::kNumberNetworkStates] = { |
| #define STATE(name, capname) { #name, "Network.Connman" # capname }, |
| #include "network_states.h" |
| }; |
| |
| void MetricsDaemon::Run(bool run_as_daemon, bool testing) { |
| Init(testing); |
| if (!run_as_daemon || daemon(0, 0) == 0) { |
| Loop(); |
| } |
| } |
| |
| void MetricsDaemon::Init(bool testing) { |
| testing_ = testing; |
| network_state_id_ = kUnknownNetworkStateId; |
| |
| ::g_thread_init(NULL); |
| ::g_type_init(); |
| ::dbus_g_thread_init(); |
| |
| ::GError* error = NULL; |
| ::DBusGConnection* dbc = ::dbus_g_bus_get(DBUS_BUS_SYSTEM, &error); |
| // Note that LOG(FATAL) terminates the process; otherwise we'd have to worry |
| // about leaking |error|. |
| LOG_IF(FATAL, dbc == NULL) << |
| "cannot connect to dbus: " << SAFE_MESSAGE(error); |
| |
| ::DBusGProxy* net_proxy = ::dbus_g_proxy_new_for_name( |
| dbc, "org.moblin.connman", "/", "org.moblin.connman.Metrics"); |
| LOG_IF(FATAL, net_proxy == NULL) << "no dbus proxy for network"; |
| |
| #if 0 |
| // Unclear how soon one can call dbus_g_type_get_map(). Doing it before the |
| // call to dbus_g_bus_get() results in a (non-fatal) assertion failure. |
| // GetProperties returns a hash table. |
| hashtable_gtype = ::dbus_g_type_get_map("GHashTable", G_TYPE_STRING, |
| G_TYPE_VALUE); |
| #endif |
| |
| dbus_g_object_register_marshaller(marshal_VOID__STRING_BOXED, |
| G_TYPE_NONE, |
| G_TYPE_STRING, |
| G_TYPE_VALUE, |
| G_TYPE_INVALID); |
| ::dbus_g_proxy_add_signal(net_proxy, "ConnectionStateChanged", |
| G_TYPE_STRING, G_TYPE_VALUE, G_TYPE_INVALID); |
| ::dbus_g_proxy_connect_signal(net_proxy, "ConnectionStateChanged", |
| G_CALLBACK(&StaticNetSignalHandler), |
| this, NULL); |
| } |
| |
| void MetricsDaemon::Loop() { |
| ::GMainLoop* loop = ::g_main_loop_new(NULL, false); |
| ::g_main_loop_run(loop); |
| } |
| |
| void MetricsDaemon::StaticNetSignalHandler(::DBusGProxy* proxy, |
| const char* property, |
| const ::GValue* value, |
| void *data) { |
| (static_cast<MetricsDaemon*>(data))->NetSignalHandler(proxy, property, value); |
| } |
| |
| void MetricsDaemon::NetSignalHandler(::DBusGProxy* proxy, |
| const char* property, |
| const ::GValue* value) { |
| if (strcmp("ConnectionState", property) != 0) { |
| return; |
| } |
| |
| const char* newstate = static_cast<const char*>(g_value_get_string(value)); |
| LogNetworkStateChange(newstate); |
| } |
| |
| void MetricsDaemon::LogNetworkStateChange(const char* newstate) { |
| NetworkStateId new_id = GetNetworkStateId(newstate); |
| if (new_id == kUnknownNetworkStateId) { |
| LOG(WARNING) << "unknown network connection state " << newstate; |
| return; |
| } |
| NetworkStateId old_id = network_state_id_; |
| if (new_id == old_id) { // valid new state and no change |
| return; |
| } |
| struct timeval now; |
| if (gettimeofday(&now, NULL) != 0) { |
| PLOG(WARNING) << "gettimeofday"; |
| } |
| if (old_id != kUnknownNetworkStateId) { |
| struct timeval diff; |
| timersub(&now, &network_state_start_, &diff); |
| int diff_ms = diff.tv_usec / 1000 + diff.tv_sec * 1000; |
| // Saturates rather than overflowing. We expect this to be statistically |
| // insignificant, since INT_MAX milliseconds is 24.8 days. |
| if (diff.tv_sec >= INT_MAX / 1000) { |
| diff_ms = INT_MAX; |
| } |
| PublishMetric(network_states_[old_id].stat_name, |
| diff_ms, |
| 1, |
| 8 * 60 * 60 * 1000, // 8 hours in milliseconds |
| 100); |
| } |
| network_state_id_ = new_id; |
| network_state_start_ = now; |
| } |
| |
| MetricsDaemon::NetworkStateId |
| MetricsDaemon::GetNetworkStateId(const char* state_name) { |
| for (int i = 0; i < kNumberNetworkStates; i++) { |
| if (strcmp(state_name, network_states_[i].name) == 0) { |
| return static_cast<NetworkStateId>(i); |
| } |
| } |
| return static_cast<NetworkStateId>(-1); |
| } |
| |
| void MetricsDaemon::PublishMetric(const char* name, int sample, |
| int min, int max, int nbuckets) { |
| if (testing_) { |
| LOG(INFO) << "received metric: " << name << " " << sample << |
| " " << min << " " << max << " " << nbuckets; |
| } else { |
| MetricsLibrary::SendToChrome(name, sample, min, max, nbuckets); |
| } |
| } |