Add missing subsystem policy

BZ: 122982

When the PFW starts it loads subsystems using there corresponding
plugin. If the requested plugin is not found, the start fails. This is a
problem, as for host, the plugins are not compiled.

Add a command in the public API to ignore missing subsystem.

Change-Id: I7597e3fef33466638191ff70b76e7faa9f979418
Signed-off-by: Kevin Rocard <kevinx.rocard@intel.com>
Reviewed-on: http://android.intel.com:8080/118039
Reviewed-by: Centelles, Sylvain <sylvain.centelles@intel.com>
Tested-by: Barthes, FabienX <fabienx.barthes@intel.com>
Reviewed-by: cactus <cactus@intel.com>
Tested-by: cactus <cactus@intel.com>

1 files changed, 26 insertions, 1 deletions

diff --git a/parameter/ParameterMgr.h b/parameter/ParameterMgr.h
index 9677303..9145c4e 100644
--- a/parameter/ParameterMgr.h
+++ b/parameter/ParameterMgr.h
@@ -104,7 +104,13 @@ public:
     // Logging
     void setLogger(ILogger* pLogger);
 
-    // Init
+    /** Load plugins, structures and settings from the config file given.
+      *
+      * @param[out] strError is a string describing the error if an error occurred
+      *                      undefined otherwise.
+      *
+      * @return true if no error occurred, false otherwise.
+      */
     bool load(string& strError);
     virtual bool init(string& strError);
 
@@ -131,6 +137,20 @@ public:
     // Dynamic parameter handling
     CParameterHandle* createParameterHandle(const string& strPath, string& strError);
 
+    /** Should start fail in case of missing subsystems.
+      * Will fail if called on started instance.
+      *
+      * @param[in] bFail: If set to true,  parameterMgr start will fail on missing subsystems
+      *                   If set to false, missing subsystems will fallback on virtual subsystem
+      */
+    void setFailureOnMissingSubsystem(bool bFail);
+
+    /** Would start fail in case of missing subsystems.
+      *
+      * @return true if the subsystem will fail on missing subsystem, false otherwise.
+      */
+    bool getFailureOnMissingSubsystem() const;
+
     //////////// Tuning /////////////
     // Tuning mode
     bool setTuningMode(bool bOn, string& strError);
@@ -458,5 +478,10 @@ private:
     // Logging
     ILogger* _pLogger;
     mutable uint32_t _uiLogDepth;
+
+    /** If set to true, missing subsystem will abort parameterMgr start.
+      * If set to false, missing subsystem will fallback on virtual subsystem.
+      */
+    bool _bFailOnMissingSubsystem;
 };