| // 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.googlesource.gerrit.plugins.zuul; |
| |
| import com.google.common.flogger.FluentLogger; |
| import com.google.gerrit.entities.Change; |
| import com.google.gerrit.entities.Project; |
| import com.google.gerrit.extensions.common.ChangeInfo; |
| import com.google.gerrit.extensions.restapi.AuthException; |
| import com.google.gerrit.extensions.restapi.BadRequestException; |
| import com.google.gerrit.extensions.restapi.Response; |
| import com.google.gerrit.extensions.restapi.RestReadView; |
| import com.google.gerrit.extensions.restapi.TopLevelResource; |
| import com.google.gerrit.server.change.RevisionResource; |
| import com.google.gerrit.server.permissions.PermissionBackendException; |
| import com.google.gerrit.server.restapi.change.ChangesCollection; |
| import com.google.gerrit.server.restapi.change.QueryChanges; |
| import com.google.inject.Inject; |
| import com.google.inject.Singleton; |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| import org.eclipse.jgit.errors.RepositoryNotFoundException; |
| |
| @Singleton |
| public class GetCrd implements RestReadView<RevisionResource> { |
| private static final FluentLogger logger = FluentLogger.forEnclosingClass(); |
| |
| private final ChangesCollection changes; |
| private final CommitMessageFetcher commitMessageFetcher; |
| |
| @Inject |
| GetCrd(ChangesCollection changes, CommitMessageFetcher commitMessageFetcher) { |
| this.changes = changes; |
| this.commitMessageFetcher = commitMessageFetcher; |
| } |
| |
| @Override |
| @SuppressWarnings("unchecked") |
| public Response<CrdInfo> apply(RevisionResource rsrc) |
| throws RepositoryNotFoundException, IOException, BadRequestException, AuthException, |
| PermissionBackendException { |
| CrdInfo out = new CrdInfo(); |
| out.dependsOn = new ArrayList<>(); |
| out.neededBy = new ArrayList<>(); |
| |
| Change.Key thisId = rsrc.getChange().getKey(); |
| |
| // get depends on info |
| Project.NameKey p = rsrc.getChange().getProject(); |
| String rev = rsrc.getPatchSet().commitId().getName(); |
| String commitMsg = commitMessageFetcher.fetch(p, rev); |
| Pattern pattern = Pattern.compile("[Dd]epends-[Oo]n:? (I[0-9a-f]{8,40})", Pattern.DOTALL); |
| Matcher matcher = pattern.matcher(commitMsg); |
| while (matcher.find()) { |
| String otherId = matcher.group(1); |
| logger.atFinest().log("Change %s depends on change %s", thisId, otherId); |
| out.dependsOn.add(otherId); |
| } |
| |
| // get needed by info |
| QueryChanges query = changes.list(); |
| String neededByQuery = "message:" + thisId + " -change:" + thisId; |
| query.addQuery(neededByQuery); |
| Response<List<?>> response = query.apply(TopLevelResource.INSTANCE); |
| List<ChangeInfo> changes = (List<ChangeInfo>) response.value(); |
| // check for dependency cycles |
| for (ChangeInfo other : changes) { |
| String otherId = other.changeId; |
| logger.atFinest().log("Change %s needed by %s", thisId, otherId); |
| if (out.dependsOn.contains(otherId)) { |
| logger.atFiner().log( |
| "Detected dependency cycle between changes %s and %s", thisId, otherId); |
| out.cycle = true; |
| } |
| out.neededBy.add(otherId); |
| } |
| |
| return Response.ok(out); |
| } |
| } |