com.google.gerrit.server.submit.UpdateOrderCalculator Maven / Gradle / Ivy
// Copyright (C) 2020 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.submit;
import com.google.common.collect.ImmutableSet;
import com.google.gerrit.entities.BranchNameKey;
import com.google.gerrit.entities.Project;
import com.google.gerrit.entities.SubmoduleSubscription;
import java.util.HashSet;
import java.util.LinkedHashSet;
import java.util.Set;
/**
* Sorts the projects or branches affected by the update.
*
* The subscription graph contains all branches (and projects) affected by the update, but the
* updates must be executed in the right order, so no superproject reference is updated before its
* target.
*/
class UpdateOrderCalculator {
private final SubscriptionGraph subscriptionGraph;
UpdateOrderCalculator(SubscriptionGraph subscriptionGraph) {
this.subscriptionGraph = subscriptionGraph;
}
ImmutableSet getProjectsInOrder() throws SubmoduleConflictException {
LinkedHashSet projects = new LinkedHashSet<>();
for (Project.NameKey project : subscriptionGraph.getAffectedSuperProjects()) {
addAllSubmoduleProjects(project, new LinkedHashSet<>(), projects);
}
for (BranchNameKey branch : subscriptionGraph.getUpdatedBranches()) {
projects.add(branch.project());
}
return ImmutableSet.copyOf(projects);
}
private void addAllSubmoduleProjects(
Project.NameKey project,
LinkedHashSet current,
LinkedHashSet projects)
throws SubmoduleConflictException {
if (current.contains(project)) {
throw new SubmoduleConflictException(
"Project level circular subscriptions detected: "
+ CircularPathFinder.printCircularPath(current, project));
}
if (projects.contains(project)) {
return;
}
current.add(project);
Set subprojects = new HashSet<>();
for (BranchNameKey branch : subscriptionGraph.getAffectedSuperBranches(project)) {
ImmutableSet subscriptions =
subscriptionGraph.getSubscriptions(branch);
for (SubmoduleSubscription s : subscriptions) {
subprojects.add(s.getSubmodule().project());
}
}
for (Project.NameKey p : subprojects) {
addAllSubmoduleProjects(p, current, projects);
}
current.remove(project);
projects.add(project);
}
ImmutableSet getBranchesInOrder() {
LinkedHashSet branches = new LinkedHashSet<>();
branches.addAll(subscriptionGraph.getSortedSuperprojectAndSubmoduleBranches());
branches.addAll(subscriptionGraph.getUpdatedBranches());
return ImmutableSet.copyOf(branches);
}
}