Darin Petkov | 002c58e | 2012-06-19 02:56:05 +0200 | [diff] [blame] | 1 | // Copyright (c) 2012 The Chromium OS Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "shill/dbus_manager.h" |
| 6 | |
| 7 | #include <base/bind.h> |
| 8 | |
| 9 | #include "shill/dbus_service_proxy_interface.h" |
| 10 | #include "shill/error.h" |
Christopher Wiley | b691efd | 2012-08-09 13:51:51 -0700 | [diff] [blame] | 11 | #include "shill/logging.h" |
Darin Petkov | 002c58e | 2012-06-19 02:56:05 +0200 | [diff] [blame] | 12 | #include "shill/proxy_factory.h" |
Darin Petkov | 002c58e | 2012-06-19 02:56:05 +0200 | [diff] [blame] | 13 | |
| 14 | using base::Bind; |
| 15 | using base::Unretained; |
| 16 | using std::list; |
| 17 | using std::map; |
| 18 | using std::string; |
| 19 | |
| 20 | namespace shill { |
| 21 | |
| 22 | namespace { |
| 23 | |
| 24 | const int kDefaultRPCTimeoutMS = 30000; |
| 25 | |
| 26 | } // namespace |
| 27 | |
| 28 | DBusManager::DBusManager() |
| 29 | : proxy_factory_(ProxyFactory::GetInstance()) {} |
| 30 | |
| 31 | DBusManager::~DBusManager() {} |
| 32 | |
| 33 | void DBusManager::Start() { |
| 34 | SLOG(DBus, 2) << __func__; |
| 35 | if (proxy_.get()) { |
| 36 | return; |
| 37 | } |
| 38 | proxy_.reset(proxy_factory_->CreateDBusServiceProxy()); |
| 39 | proxy_->set_name_owner_changed_callback( |
| 40 | Bind(&DBusManager::OnNameOwnerChanged, Unretained(this))); |
| 41 | } |
| 42 | |
| 43 | void DBusManager::Stop() { |
| 44 | SLOG(DBus, 2) << __func__; |
| 45 | proxy_.reset(); |
| 46 | name_watchers_.clear(); |
| 47 | } |
| 48 | |
Ben Chan | 084faca | 2013-07-02 14:25:12 -0700 | [diff] [blame] | 49 | DBusNameWatcher *DBusManager::CreateNameWatcher( |
| 50 | const string &name, |
| 51 | const DBusNameWatcher::NameAppearedCallback &name_appeared_callback, |
| 52 | const DBusNameWatcher::NameVanishedCallback &name_vanished_callback) { |
| 53 | // DBusNameWatcher holds a weak pointer to, and thus may outlive, this |
| 54 | // DBusManager object. |
| 55 | scoped_ptr<DBusNameWatcher> name_watcher(new DBusNameWatcher( |
| 56 | this, name, name_appeared_callback, name_vanished_callback)); |
| 57 | name_watchers_[name].push_back(name_watcher.get()); |
| 58 | |
Darin Petkov | 002c58e | 2012-06-19 02:56:05 +0200 | [diff] [blame] | 59 | Error error; |
Ben Chan | 084faca | 2013-07-02 14:25:12 -0700 | [diff] [blame] | 60 | proxy_->GetNameOwner(name, |
| 61 | &error, |
| 62 | Bind(&DBusManager::OnGetNameOwnerComplete, |
| 63 | AsWeakPtr(), |
| 64 | name_watcher->AsWeakPtr()), |
| 65 | kDefaultRPCTimeoutMS); |
Darin Petkov | 002c58e | 2012-06-19 02:56:05 +0200 | [diff] [blame] | 66 | // Ensures that the watcher gets an initial appear/vanish notification |
| 67 | // regardless of the outcome of the GetNameOwner call. |
| 68 | if (error.IsFailure()) { |
Ben Chan | 084faca | 2013-07-02 14:25:12 -0700 | [diff] [blame] | 69 | OnGetNameOwnerComplete(name_watcher->AsWeakPtr(), string(), error); |
| 70 | } |
| 71 | return name_watcher.release(); |
| 72 | } |
| 73 | |
| 74 | void DBusManager::RemoveNameWatcher(DBusNameWatcher *name_watcher) { |
| 75 | CHECK(name_watcher); |
| 76 | |
| 77 | auto watcher_iterator = name_watchers_.find(name_watcher->name()); |
| 78 | if (watcher_iterator != name_watchers_.end()) { |
| 79 | watcher_iterator->second.remove(name_watcher); |
Darin Petkov | 002c58e | 2012-06-19 02:56:05 +0200 | [diff] [blame] | 80 | } |
| 81 | } |
| 82 | |
| 83 | void DBusManager::OnNameOwnerChanged( |
| 84 | const string &name, const string &old_owner, const string &new_owner) { |
Ben Chan | 084faca | 2013-07-02 14:25:12 -0700 | [diff] [blame] | 85 | auto watcher_iterator = name_watchers_.find(name); |
| 86 | if (watcher_iterator == name_watchers_.end()) { |
Darin Petkov | 002c58e | 2012-06-19 02:56:05 +0200 | [diff] [blame] | 87 | return; |
| 88 | } |
Ben Chan | 084faca | 2013-07-02 14:25:12 -0700 | [diff] [blame] | 89 | LOG(INFO) << "DBus name '" << name << "' owner changed ('" << old_owner |
| 90 | << "' -> '" << new_owner << "')"; |
| 91 | for (const auto &watcher : watcher_iterator->second) { |
| 92 | watcher->OnNameOwnerChanged(new_owner); |
Darin Petkov | 002c58e | 2012-06-19 02:56:05 +0200 | [diff] [blame] | 93 | } |
| 94 | } |
| 95 | |
Ben Chan | 084faca | 2013-07-02 14:25:12 -0700 | [diff] [blame] | 96 | void DBusManager::OnGetNameOwnerComplete( |
| 97 | const base::WeakPtr<DBusNameWatcher> &watcher, |
| 98 | const string &unique_name, |
| 99 | const Error &error) { |
| 100 | if (watcher) { |
| 101 | LOG(INFO) << "DBus name '" << watcher->name() << "' owner '" << unique_name |
| 102 | << "' (" << error.message() << ")"; |
| 103 | watcher->OnNameOwnerChanged(error.IsSuccess() ? unique_name : string()); |
Darin Petkov | 002c58e | 2012-06-19 02:56:05 +0200 | [diff] [blame] | 104 | } |
| 105 | } |
| 106 | |
| 107 | } // namespace shill |