1 files changed, 122 insertions, 0 deletions
diff --git a/java/com/google/gerrit/server/extensions/events/EventUtil.java b/java/com/google/gerrit/server/extensions/events/EventUtil.java
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+++ b/java/com/google/gerrit/server/extensions/events/EventUtil.java
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+// Copyright (C) 2015 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.extensions.events;
+
+import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.Sets;
+import com.google.gerrit.extensions.client.ListChangesOption;
+import com.google.gerrit.extensions.common.AccountInfo;
+import com.google.gerrit.extensions.common.ApprovalInfo;
+import com.google.gerrit.extensions.common.ChangeInfo;
+import com.google.gerrit.extensions.common.RevisionInfo;
+import com.google.gerrit.reviewdb.client.Account;
+import com.google.gerrit.reviewdb.client.Change;
+import com.google.gerrit.reviewdb.client.PatchSet;
+import com.google.gerrit.reviewdb.client.Project;
+import com.google.gerrit.reviewdb.server.ReviewDb;
+import com.google.gerrit.server.GpgException;
+import com.google.gerrit.server.account.AccountState;
+import com.google.gerrit.server.change.ChangeJson;
+import com.google.gerrit.server.change.RevisionJson;
+import com.google.gerrit.server.patch.PatchListNotAvailableException;
+import com.google.gerrit.server.permissions.PermissionBackendException;
+import com.google.gerrit.server.query.change.ChangeData;
+import com.google.gwtorm.server.OrmException;
+import com.google.inject.Inject;
+import com.google.inject.Provider;
+import com.google.inject.Singleton;
+import java.io.IOException;
+import java.sql.Timestamp;
+import java.util.EnumSet;
+import java.util.HashMap;
+import java.util.Map;
+
+@Singleton
+public class EventUtil {
+  private static final ImmutableSet<ListChangesOption> CHANGE_OPTIONS;
+
+  static {
+    EnumSet<ListChangesOption> opts = EnumSet.allOf(ListChangesOption.class);
+
+    // Some options, like actions, are expensive to compute because they potentially have to walk
+    // lots of history and inspect lots of other changes.
+    opts.remove(ListChangesOption.CHANGE_ACTIONS);
+    opts.remove(ListChangesOption.CURRENT_ACTIONS);
+
+    // CHECK suppresses some exceptions on corrupt changes, which is not appropriate for passing
+    // through the event system as we would rather let them propagate.
+    opts.remove(ListChangesOption.CHECK);
+
+    CHANGE_OPTIONS = Sets.immutableEnumSet(opts);
+  }
+
+  private final ChangeData.Factory changeDataFactory;
+  private final Provider<ReviewDb> db;
+  private final ChangeJson.Factory changeJsonFactory;
+  private final RevisionJson.Factory revisionJsonFactory;
+
+  @Inject
+  EventUtil(
+      ChangeJson.Factory changeJsonFactory,
+      RevisionJson.Factory revisionJsonFactory,
+      ChangeData.Factory changeDataFactory,
+      Provider<ReviewDb> db) {
+    this.changeDataFactory = changeDataFactory;
+    this.db = db;
+    this.changeJsonFactory = changeJsonFactory;
+    this.revisionJsonFactory = revisionJsonFactory;
+  }
+
+  public ChangeInfo changeInfo(Change change) throws OrmException {
+    return changeJsonFactory.create(CHANGE_OPTIONS).format(change);
+  }
+
+  public RevisionInfo revisionInfo(Project project, PatchSet ps)
+      throws OrmException, PatchListNotAvailableException, GpgException, IOException,
+          PermissionBackendException {
+    return revisionInfo(project.getNameKey(), ps);
+  }
+
+  public RevisionInfo revisionInfo(Project.NameKey project, PatchSet ps)
+      throws OrmException, PatchListNotAvailableException, GpgException, IOException,
+          PermissionBackendException {
+    ChangeData cd = changeDataFactory.create(db.get(), project, ps.getId().getParentKey());
+    return revisionJsonFactory.create(CHANGE_OPTIONS).getRevisionInfo(cd, ps);
+  }
+
+  public AccountInfo accountInfo(AccountState accountState) {
+    if (accountState == null || accountState.getAccount().getId() == null) {
+      return null;
+    }
+    Account account = accountState.getAccount();
+    AccountInfo accountInfo = new AccountInfo(account.getId().get());
+    accountInfo.email = account.getPreferredEmail();
+    accountInfo.name = account.getFullName();
+    accountInfo.username = accountState.getUserName().orElse(null);
+    return accountInfo;
+  }
+
+  public Map<String, ApprovalInfo> approvals(
+      AccountState accountState, Map<String, Short> approvals, Timestamp ts) {
+    Map<String, ApprovalInfo> result = new HashMap<>();
+    for (Map.Entry<String, Short> e : approvals.entrySet()) {
+      Integer value = e.getValue() != null ? Integer.valueOf(e.getValue()) : null;
+      result.put(
+          e.getKey(),
+          new ApprovalInfo(accountState.getAccount().getId().get(), value, null, null, ts));
+    }
+    return result;
+  }
+}