| // Copyright (C) 2009 The Android Open Source Project |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package com.google.gerrit.server.config; |
| |
| import com.google.gerrit.reviewdb.server.ReviewDb; |
| import com.google.gerrit.server.RequestCleanup; |
| import com.google.gwtorm.server.OrmException; |
| import com.google.gwtorm.server.SchemaFactory; |
| import com.google.inject.Inject; |
| import com.google.inject.Provider; |
| import com.google.inject.ProvisionException; |
| import com.google.inject.servlet.RequestScoped; |
| |
| /** Provides {@link ReviewDb} database handle live only for this request. */ |
| @RequestScoped |
| public class RequestScopedReviewDbProvider implements Provider<ReviewDb> { |
| private final SchemaFactory<ReviewDb> schema; |
| private final Provider<RequestCleanup> cleanup; |
| private ReviewDb db; |
| |
| @Inject |
| public RequestScopedReviewDbProvider(final SchemaFactory<ReviewDb> schema, |
| final Provider<RequestCleanup> cleanup) { |
| this.schema = schema; |
| this.cleanup = cleanup; |
| } |
| |
| @Override |
| public ReviewDb get() { |
| if (db == null) { |
| final ReviewDb c; |
| try { |
| c = schema.open(); |
| } catch (OrmException e) { |
| throw new ProvisionException("Cannot open ReviewDb", e); |
| } |
| try { |
| cleanup.get().add(new Runnable() { |
| @Override |
| public void run() { |
| c.close(); |
| db = null; |
| } |
| }); |
| } catch (Throwable e) { |
| c.close(); |
| throw new ProvisionException("Cannot defer cleanup of ReviewDb", e); |
| } |
| db = c; |
| } |
| return db; |
| } |
| } |