コード例 #1
0
 /**
  * Complete the current operation and persist the current state to the disk. This will also
  * trigger the invalidation of outdated modules.
  *
  * @param modification the current modification
  * @param callback the completion callback
  */
 private void complete(
     final InstallationManager.InstallationModification modification,
     final FinalizeCallback callback) {
   final List<File> processed = new ArrayList<File>();
   try {
     try {
       // Update the state to invalidate and process module resources
       if (stateUpdater.compareAndSet(this, State.PREPARED, State.INVALIDATE)
           && mode == PatchingTaskContext.Mode.APPLY) {
         // Only invalidate modules when applying patches; on rollback files are immediately
         // restored
         for (final File invalidation : moduleInvalidations) {
           processed.add(invalidation);
           PatchModuleInvalidationUtils.processFile(invalidation, mode);
         }
       }
       modification.complete();
       callback.completed(this);
       state = State.COMPLETED;
     } catch (Exception e) {
       this.moduleInvalidations.clear();
       this.moduleInvalidations.addAll(processed);
       throw new RuntimeException(e);
     }
   } finally {
     if (state != State.COMPLETED) {
       try {
         modification.cancel();
       } finally {
         try {
           undoChanges();
         } finally {
           callback.operationCancelled(this);
         }
       }
     } else {
       try {
         if (checkForGarbageOnRestart) {
           final File cleanupMarker =
               new File(installedImage.getInstallationMetadata(), "cleanup-patching-dirs");
           cleanupMarker.createNewFile();
         }
       } catch (IOException e) {
         PatchLogger.ROOT_LOGGER.infof(e, "failed to create cleanup marker");
       }
     }
   }
 }
コード例 #2
0
 /**
  * Cancel the current patch and undo the changes.
  *
  * @param callback the finalize callback
  */
 protected void cancel(final FinalizeCallback callback) {
   try {
     undoChanges();
   } finally {
     callback.operationCancelled(this);
   }
 }
コード例 #3
0
  /**
   * Finalize the patch.
   *
   * @param callback the finalize callback
   * @return the result
   * @throws Exception
   */
  protected PatchingResult finalize(final FinalizeCallback callback) throws Exception {
    assert state == State.NEW;
    final Patch original = callback.getPatch();
    final Patch.PatchType patchType = original.getIdentity().getPatchType();
    final String patchId;
    if (patchType == Patch.PatchType.CUMULATIVE) {
      patchId = modification.getCumulativePatchID();
    } else {
      patchId = original.getPatchId();
    }
    try {
      // The processed patch, based on the recorded changes
      final Patch processedPatch = createProcessedPatch(original);
      // The rollback containing all the recorded rollback actions
      final RollbackPatch rollbackPatch = createRollbackPatch(patchId, patchType);
      callback.finishPatch(processedPatch, rollbackPatch, this);
    } catch (Exception e) {
      if (undoChanges()) {
        callback.operationCancelled(this);
      }
      throw e;
    }
    state = State.PREPARED;
    return new PatchingResult() {
      @Override
      public String getPatchId() {
        return original.getPatchId();
      }

      @Override
      public PatchInfo getPatchInfo() {
        return new PatchInfo() {
          @Override
          public String getVersion() {
            return identityEntry.getResultingVersion();
          }

          @Override
          public String getCumulativePatchID() {
            return identityEntry.delegate.getModifiedState().getCumulativePatchID();
          }

          @Override
          public List<String> getPatchIDs() {
            return identityEntry.delegate.getModifiedState().getPatchIDs();
          }
        };
      }

      @Override
      public void commit() {
        if (state == State.PREPARED) {
          complete(modification, callback);
        } else {
          undoChanges();
          throw new IllegalStateException();
        }
      }

      @Override
      public void rollback() {
        if (undoChanges()) {
          try {
            callback.operationCancelled(IdentityPatchContext.this);
          } finally {
            modification.cancel();
          }
        }
      }
    };
  }