SONAR-6993 Add isCpdEnabled in analysis metadata holder

server/sonar-server/src/main/java/org/sonar/server/computation/analysis/AnalysisMetadataHolder.java

@@ -45,4 +45,9 @@ public interface AnalysisMetadataHolder {
   @CheckForNull
   Snapshot getBaseProjectSnapshot();
 
+  /**
+   * @throws IllegalStateException if cross project duplication flag has not been set
+   */
+  boolean isCrossProjectDuplicationEnabled();
+
 }

server/sonar-server/src/main/java/org/sonar/server/computation/analysis/AnalysisMetadataHolderImpl.java

@@ -35,6 +35,9 @@ public class AnalysisMetadataHolderImpl implements MutableAnalysisMetadataHolder
   @CheckForNull
   private Snapshot baseProjectSnapshot;
 
+  @CheckForNull
+  private Boolean isCrossProjectDuplicationEnabled;
+
   @Override
   public void setAnalysisDate(Date date) {
     checkState(analysisDate == null, "Analysis date has already been set");
@@ -66,4 +69,15 @@ public class AnalysisMetadataHolderImpl implements MutableAnalysisMetadataHolder
     return baseProjectSnapshot;
   }
 
+  @Override
+  public void setIsCrossProjectDuplicationEnabled(boolean isCrossProjectDuplicationEnabled) {
+    checkState(this.isCrossProjectDuplicationEnabled == null, "Cross project duplication flag has already been set");
+    this.isCrossProjectDuplicationEnabled = isCrossProjectDuplicationEnabled;
+  }
+
+  @Override
+  public boolean isCrossProjectDuplicationEnabled() {
+    checkState(isCrossProjectDuplicationEnabled != null, "Cross project duplication flag has not been set");
+    return isCrossProjectDuplicationEnabled;
+  }
 }

server/sonar-server/src/main/java/org/sonar/server/computation/analysis/MutableAnalysisMetadataHolder.java

@@ -36,4 +36,9 @@ public interface MutableAnalysisMetadataHolder extends AnalysisMetadataHolder {
    */
   void setBaseProjectSnapshot(@Nullable Snapshot baseProjectSnapshot);
 
+  /**
+   * @throws IllegalStateException if cross project duplication flag has already been set
+   */
+  void setIsCrossProjectDuplicationEnabled(boolean isCrossProjectDuplicationEnabled);
+
 }

server/sonar-server/src/test/java/org/sonar/server/computation/analysis/AnalysisMetadataHolderImplTest.java

@@ -112,4 +112,40 @@ public class AnalysisMetadataHolderImplTest {
     expectedException.expectMessage("Base project snapshot has already been set");
     underTest.setBaseProjectSnapshot(BASE_PROJECT_SNAPSHOT);
   }
+
+  @Test
+  public void isCrossProjectDuplicationEnabled_return_true() {
+    AnalysisMetadataHolderImpl underTest = new AnalysisMetadataHolderImpl();
+
+    underTest.setIsCrossProjectDuplicationEnabled(true);
+
+    assertThat(underTest.isCrossProjectDuplicationEnabled()).isEqualTo(true);
+  }
+
+  @Test
+  public void isCrossProjectDuplicationEnabled_return_false() {
+    AnalysisMetadataHolderImpl underTest = new AnalysisMetadataHolderImpl();
+
+    underTest.setIsCrossProjectDuplicationEnabled(false);
+
+    assertThat(underTest.isCrossProjectDuplicationEnabled()).isEqualTo(false);
+  }
+
+  @Test
+  public void isCrossProjectDuplicationEnabled_throws_ISE_when_holder_is_not_initialized() {
+    expectedException.expect(IllegalStateException.class);
+    expectedException.expectMessage("Cross project duplication flag has not been set");
+
+    new AnalysisMetadataHolderImpl().isCrossProjectDuplicationEnabled();
+  }
+
+  @Test
+  public void setIsCrossProjectDuplicationEnabled_throws_ISE_when_called_twice() {
+    AnalysisMetadataHolderImpl underTest = new AnalysisMetadataHolderImpl();
+    underTest.setIsCrossProjectDuplicationEnabled(true);
+
+    expectedException.expect(IllegalStateException.class);
+    expectedException.expectMessage("Cross project duplication flag has already been set");
+    underTest.setIsCrossProjectDuplicationEnabled(false);
+  }
 }

server/sonar-server/src/test/java/org/sonar/server/computation/analysis/MutableAnalysisMetadataHolderRule.java

@@ -49,6 +49,11 @@ public class MutableAnalysisMetadataHolderRule extends ExternalResource implemen
     return delegate.isFirstAnalysis();
   }
 
+  @Override
+  public void setBaseProjectSnapshot(@Nullable Snapshot baseProjectSnapshot) {
+    delegate.setBaseProjectSnapshot(baseProjectSnapshot);
+  }
+
   @Override
   @CheckForNull
   public Snapshot getBaseProjectSnapshot() {
@@ -56,7 +61,12 @@ public class MutableAnalysisMetadataHolderRule extends ExternalResource implemen
   }
 
   @Override
-  public void setBaseProjectSnapshot(@Nullable Snapshot baseProjectSnapshot) {
-    delegate.setBaseProjectSnapshot(baseProjectSnapshot);
+  public boolean isCrossProjectDuplicationEnabled() {
+    return delegate.isCrossProjectDuplicationEnabled();
+  }
+
+  @Override
+  public void setIsCrossProjectDuplicationEnabled(boolean isCrossProjectDuplicationEnabled) {
+    delegate.setIsCrossProjectDuplicationEnabled(isCrossProjectDuplicationEnabled);
   }
 }