Provide methods for adding or replacing steps

Change-Id: I0845a49e34dc3816d826502b55203dbd930ba744
Signed-off-by: Junghoon Park <jh9216.park@samsung.com>

diff --git a/src/common/app_installer.h b/src/common/app_installer.h
index b917c56..2e3a5d1 100644 (file)
--- a/src/common/app_installer.h
+++ b/src/common/app_installer.h
@@ -98,6 +98,102 @@ class AppInstaller {
   }
 
   /**
+   * \brief Replaces new step to installer by specified type
+   *        Type of template parameter is used to create requested step
+   *        class instance.
+   *        Context of installer is passed to step in this method
+   *        and is not being exposed outside installer.
+   *        Step arguments are deduced and forwarded to constructor.
+   * \tparam StepT Step object to be added to the step list
+   * \tparam Args constructor arguments for StepT object
+   * \param step_name step name to replace
+   * \param args argument list
+   */
+  template<class StepT, class... Args>
+  void ReplaceStep(std::string step_name, Args&&... args) {
+    auto it = std::find_if(std::begin(steps_), std::end(steps_),
+        [&](const std::unique_ptr<Step>& s) {
+          return step_name == s->name();
+        });
+
+    if (steps_.end() == it) {
+      HandleStepError(Step::Status::INVALID_VALUE,
+          "Can't find the step : " + step_name);
+      return;
+    }
+
+    std::unique_ptr<Step> step(
+        new StepT(context_.get(), std::forward<Args>(args)...));
+    step->on_error.connect(
+        boost::bind(&AppInstaller::HandleStepError, this, _1, _2));
+    *it = std::move(step);
+  }
+
+  /**
+   * \brief Adds new step before specified step
+   *        Type of template parameter is used to create requested step
+   *        class instance.
+   *        Context of installer is passed to step in this method
+   *        and is not being exposed outside installer.
+   *        Step arguments are deduced and forwarded to constructor.
+   * \tparam StepT Step object to be added to the step list
+   * \tparam Args constructor arguments for StepT object
+   * \param step_name step name to find and add
+   * \param args argument list
+   */
+  template<class StepT, class... Args>
+  void AddStepBefore(std::string step_name, Args&&... args) {
+    auto it = std::find_if(std::begin(steps_), std::end(steps_),
+        [&](const std::unique_ptr<Step>& s) {
+          return step_name == s->name();
+        });
+
+    if (steps_.end() == it) {
+      HandleStepError(Step::Status::INVALID_VALUE,
+          "Can't find the step : " + step_name);
+      return;
+    }
+
+    std::unique_ptr<Step> step(
+        new StepT(context_.get(), std::forward<Args>(args)...));
+    step->on_error.connect(
+        boost::bind(&AppInstaller::HandleStepError, this, _1, _2));
+    steps_.insert(it, std::move(step));
+  }
+
+  /**
+   * \brief Adds new step after specified step
+   *        Type of template parameter is used to create requested step
+   *        class instance.
+   *        Context of installer is passed to step in this method
+   *        and is not being exposed outside installer.
+   *        Step arguments are deduced and forwarded to constructor.
+   * \tparam StepT Step object to be added to the step list
+   * \tparam Args constructor arguments for StepT object
+   * \param step_name step name to find and add
+   * \param args argument list
+   */
+  template<class StepT, class... Args>
+  void AddStepAfter(std::string step_name, Args&&... args) {
+    auto it = std::find_if(std::begin(steps_), std::end(steps_),
+        [&](const std::unique_ptr<Step>& s) {
+          return step_name == s->name();
+        });
+
+    if (steps_.end() == it) {
+      HandleStepError(Step::Status::INVALID_VALUE,
+          "Can't find the step : " + step_name);
+      return;
+    }
+
+    std::unique_ptr<Step> step(
+        new StepT(context_.get(), std::forward<Args>(args)...));
+    step->on_error.connect(
+        boost::bind(&AppInstaller::HandleStepError, this, _1, _2));
+    steps_.insert(++it, std::move(step));
+  }
+
+  /**
    * \brief runs the steps in the specific sequence
    *
    * \return Result of the run (eg Result:OK)