cmsdk: Mandate partner feature xml's for service implementation.

  The feature xml plays two roles:

      1) To allow sdk interface (constructor) to throw when system
      service is unavailable. This allows for clearer platform
      development debugging.

      2) To allow for simpler disambiguation of what services to
      instrument in a modular environment.

Change-Id: Ic980225df9c115e97f7147cf043cf92bbb225f01
TICKET: CYNGNOS-2293

2 files changed, 14 insertions, 0 deletions

diff --git a/src/java/cyanogenmod/app/CMContextConstants.java b/src/java/cyanogenmod/app/CMContextConstants.java
index e34f211..e90d8ed 100644
--- a/src/java/cyanogenmod/app/CMContextConstants.java
+++ b/src/java/cyanogenmod/app/CMContextConstants.java
@@ -173,5 +173,13 @@ public final class CMContextConstants {
          */
         @SdkConstant(SdkConstant.SdkConstantType.FEATURE)
         public static final String PERFORMANCE = "org.cyanogenmod.performance";
+
+        /**
+         * Feature for {@link PackageManager#getSystemAvailableFeatures} and
+         * {@link PackageManager#hasSystemFeature}: The device includes the cm partner service
+         * utilized by the cmsdk.
+         */
+        @SdkConstant(SdkConstant.SdkConstantType.FEATURE)
+        public static final String PARTNER = "org.cyanogenmod.partner";
     }
 }
diff --git a/src/java/cyanogenmod/app/PartnerInterface.java b/src/java/cyanogenmod/app/PartnerInterface.java
index b06effd..a7661ff 100644
--- a/src/java/cyanogenmod/app/PartnerInterface.java
+++ b/src/java/cyanogenmod/app/PartnerInterface.java
@@ -83,6 +83,12 @@ public class PartnerInterface {
             mContext = context;
         }
         sService = getService();
+        if (context.getPackageManager().hasSystemFeature(
+               CMContextConstants.Features.PARTNER) && sService == null) {
+            throw new RuntimeException("Unable to get PartnerInterfaceService. The service" +
+                    " either crashed, was not started, or the interface has been called to early" +
+                    " in SystemServer init");
+        }
     }
 
     /**