src/CommonAPI/DBus/DBusProxy.cpp

   1 /* Copyright (C) 2013 BMW Group
   2  * Author: Manfred Bathelt (manfred.bathelt@bmw.de)
   3  * Author: Juergen Gehring (juergen.gehring@bmw.de)
   4  * This Source Code Form is subject to the terms of the Mozilla Public
   5  * License, v. 2.0. If a copy of the MPL was not distributed with this
   6  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   7 #include "DBusProxy.h"
   8 #include "DBusServiceRegistry.h"
   9 #include "DBusUtils.h"
  10
  11 #include <algorithm>
  12 #include <cassert>
  13 #include <dbus/dbus.h>
  14 #include <functional>
  15 #include <CommonAPI/Event.h>
  16
  17 namespace CommonAPI {
  18 namespace DBus {
  19
  20 DBusProxyStatusEvent::DBusProxyStatusEvent(DBusProxy* dbusProxy) :
  21                 dbusProxy_(dbusProxy) {
  22 }
  23
  24 void DBusProxyStatusEvent::onFirstListenerAdded(const CancellableListener& listener) {
  25     auto serviceStatusListener = std::bind(
  26                     &DBusProxyStatusEvent::onServiceAvailableSignalHandler,
  27                     this,
  28                     std::placeholders::_1,
  29                     std::placeholders::_2);
  30
  31     subscription_ = dbusProxy_->getDBusConnection()->getDBusServiceRegistry()->getServiceStatusEvent().subscribe(
  32                     dbusProxy_->commonApiDomain_ + ":" + dbusProxy_->commonApiServiceId_ + ":" + dbusProxy_->commonApiParticipantId_,
  33                     serviceStatusListener);
  34 }
  35
  36 void DBusProxyStatusEvent::onLastListenerRemoved(const CancellableListener& listener) {
  37     dbusProxy_->getDBusConnection()->getDBusServiceRegistry()->getServiceStatusEvent().unsubscribe(subscription_);
  38 }
  39
  40 SubscriptionStatus DBusProxyStatusEvent::onServiceAvailableSignalHandler(const std::string& name,
  41                                                                          const AvailabilityStatus& availabilityStatus) {
  42     AvailabilityStatus availability = availabilityStatus;
  43
  44     return notifyListeners(availability);
  45 }
  46
  47
  48 DBusProxy::DBusProxy(const std::string& commonApiAddress,
  49                      const std::string& dbusInterfaceName,
  50                      const std::string& dbusBusName,
  51                      const std::string& dbusObjectPath,
  52                      const std::shared_ptr<DBusProxyConnection>& dbusProxyConnection) :
  53                          commonApiDomain_(split(commonApiAddress, ':')[0]),
  54                          commonApiServiceId_(split(commonApiAddress, ':')[1]),
  55                          commonApiParticipantId_(split(commonApiAddress, ':')[2]),
  56                                                  dbusBusName_(dbusBusName),
  57                                  dbusObjectPath_(dbusObjectPath),
  58                                  dbusInterfaceName_(dbusInterfaceName),
  59                                  statusEvent_(this),
  60                                  interfaceVersionAttribute_(*this, "getInterfaceVersion"),
  61                                  available_(false),
  62                                  availableSet_(false),
  63                                  connection_(dbusProxyConnection) {
  64 }
  65
  66 DBusProxy::DBusProxy(const std::string& dbusInterfaceName,
  67                      const std::string& dbusBusName,
  68                      const std::string& dbusObjectPath,
  69                      const std::shared_ptr<DBusProxyConnection>& connection,
  70                      const bool isAlwaysAvailable):
  71                          commonApiDomain_(""),
  72                          commonApiServiceId_(""),
  73                          commonApiParticipantId_(""),
  74                          dbusBusName_(dbusBusName),
  75                          dbusObjectPath_(dbusObjectPath),
  76                          dbusInterfaceName_(dbusInterfaceName),
  77                          statusEvent_(this),
  78                          interfaceVersionAttribute_(*this, "getInterfaceVersion"),
  79                          available_(isAlwaysAvailable),
  80                          availableSet_(isAlwaysAvailable),
  81                          connection_(connection) {
  82 }
  83
  84 std::string DBusProxy::getAddress() const {
  85     return commonApiDomain_ + ":" + commonApiServiceId_ + ":" + commonApiParticipantId_;
  86 }
  87
  88 const std::string& DBusProxy::getDomain() const {
  89     return commonApiDomain_;
  90 }
  91
  92 const std::string& DBusProxy::getServiceId() const {
  93     return commonApiServiceId_;
  94 }
  95
  96 const std::string& DBusProxy::getInstanceId() const {
  97     return commonApiParticipantId_;
  98 }
  99
 100
 101 bool DBusProxy::isAvailable() const {
 102     if (!availableSet_) {
 103         auto status = getDBusConnection()->getDBusServiceRegistry()->getReadyFuture().wait_for(std::chrono::milliseconds(1));
 104         if (checkReady(status)) {
 105             available_ = getDBusConnection()->getDBusServiceRegistry()->isServiceInstanceAlive(
 106                             dbusInterfaceName_,
 107                             dbusBusName_,
 108                             dbusObjectPath_);
 109             availableSet_ = true;
 110         }
 111     }
 112     return available_;
 113 }
 114
 115 bool DBusProxy::isAvailableBlocking() const {
 116     if (!availableSet_) {
 117         getDBusConnection()->getDBusServiceRegistry()->getReadyFuture().wait();
 118         available_ = getDBusConnection()->getDBusServiceRegistry()->isServiceInstanceAlive(
 119                         dbusInterfaceName_,
 120                         dbusBusName_,
 121                         dbusObjectPath_);
 122         availableSet_ = true;
 123     }
 124     return available_;
 125 }
 126
 127 ProxyStatusEvent& DBusProxy::getProxyStatusEvent() {
 128     return statusEvent_;
 129 }
 130
 131 InterfaceVersionAttribute& DBusProxy::getInterfaceVersionAttribute() {
 132     return interfaceVersionAttribute_;
 133 }
 134
 135 DBusMessage DBusProxy::createMethodCall(const char* methodName,
 136                                         const char* methodSignature) const {
 137     return DBusMessage::createMethodCall(
 138                     dbusBusName_.c_str(),
 139                     dbusObjectPath_.c_str(),
 140                     dbusInterfaceName_.c_str(),
 141                     methodName,
 142                     methodSignature);
 143 }
 144
 145 } // namespace DBus
 146 } // namespace CommonAPI