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// Copyright (C) 2008 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.project;
import static com.google.common.base.Preconditions.checkState;
import static com.google.gerrit.entities.PermissionRule.Action.ALLOW;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.collect.FluentIterable;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Lists;
import com.google.common.flogger.FluentLogger;
import com.google.gerrit.entities.AccessSection;
import com.google.gerrit.entities.AccountGroup;
import com.google.gerrit.entities.BooleanProjectConfig;
import com.google.gerrit.entities.BranchNameKey;
import com.google.gerrit.entities.BranchOrderSection;
import com.google.gerrit.entities.CachedProjectConfig;
import com.google.gerrit.entities.GroupReference;
import com.google.gerrit.entities.LabelType;
import com.google.gerrit.entities.LabelTypes;
import com.google.gerrit.entities.Permission;
import com.google.gerrit.entities.PermissionRule;
import com.google.gerrit.entities.Project;
import com.google.gerrit.entities.StoredCommentLinkInfo;
import com.google.gerrit.entities.SubmitRequirement;
import com.google.gerrit.entities.SubscribeSection;
import com.google.gerrit.extensions.api.projects.CommentLinkInfo;
import com.google.gerrit.extensions.client.SubmitType;
import com.google.gerrit.extensions.restapi.ResourceConflictException;
import com.google.gerrit.index.project.ProjectData;
import com.google.gerrit.server.account.CapabilityCollection;
import com.google.gerrit.server.config.AllProjectsName;
import com.google.gerrit.server.config.AllUsersName;
import com.google.gerrit.server.config.PluginConfig;
import com.google.gerrit.server.git.TransferConfig;
import com.google.gerrit.server.notedb.ChangeNotes;
import com.google.inject.Inject;
import com.google.inject.assistedinject.Assisted;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.Set;
import org.eclipse.jgit.errors.ConfigInvalidException;
import org.eclipse.jgit.lib.Config;
/**
* State of a project, aggregated from the project and its parents. This is obtained from the {@link
* ProjectCache}. It should not be persisted across requests
*/
public class ProjectState {
private static final FluentLogger logger = FluentLogger.forEnclosingClass();
public interface Factory {
ProjectState create(CachedProjectConfig config);
}
private final boolean isAllProjects;
private final boolean isAllUsers;
private final AllProjectsName allProjectsName;
private final ProjectCache projectCache;
private final List commentLinks;
private final CachedProjectConfig cachedConfig;
private final Set localOwners;
private final long globalMaxObjectSizeLimit;
private final boolean inheritProjectMaxObjectSizeLimit;
/** Local access sections, wrapped in SectionMatchers for faster evaluation. */
private volatile List localAccessSections;
/** If this is all projects, the capabilities used by the server. */
private final CapabilityCollection capabilities;
@Inject
public ProjectState(
ProjectCache projectCache,
AllProjectsName allProjectsName,
AllUsersName allUsersName,
List commentLinks,
CapabilityCollection.Factory limitsFactory,
TransferConfig transferConfig,
@Assisted CachedProjectConfig cachedProjectConfig) {
this.projectCache = projectCache;
this.isAllProjects = cachedProjectConfig.getProject().getNameKey().equals(allProjectsName);
this.isAllUsers = cachedProjectConfig.getProject().getNameKey().equals(allUsersName);
this.allProjectsName = allProjectsName;
this.commentLinks = commentLinks;
this.cachedConfig = cachedProjectConfig;
this.capabilities =
isAllProjects
? limitsFactory.create(
cachedProjectConfig
.getAccessSection(AccessSection.GLOBAL_CAPABILITIES)
.orElse(null))
: null;
this.globalMaxObjectSizeLimit = transferConfig.getMaxObjectSizeLimit();
this.inheritProjectMaxObjectSizeLimit = transferConfig.inheritProjectMaxObjectSizeLimit();
if (isAllProjects && !Permission.canBeOnAllProjects(AccessSection.ALL, Permission.OWNER)) {
localOwners = Collections.emptySet();
} else {
HashSet groups = new HashSet<>();
Optional all = cachedProjectConfig.getAccessSection(AccessSection.ALL);
if (all.isPresent()) {
Permission owner = all.get().getPermission(Permission.OWNER);
if (owner != null) {
for (PermissionRule rule : owner.getRules()) {
GroupReference ref = rule.getGroup();
if (rule.getAction() == ALLOW && ref.getUUID() != null) {
groups.add(ref.getUUID());
}
}
}
}
localOwners = Collections.unmodifiableSet(groups);
}
}
/**
* Returns cached computation of all global capabilities. This should only be invoked on the state
* from {@link ProjectCache#getAllProjects()}. Null on any other project.
*/
public CapabilityCollection getCapabilityCollection() {
return capabilities;
}
/**
* Returns true if the Prolog engine is expected to run for this project, that is if this project
* or a parent possesses a rules.pl file.
*/
public boolean hasPrologRules() {
// We check if this project has a rules.pl file
if (getConfig().getRulesId().isPresent()) {
return true;
}
// If not, we check the parents.
return parents().stream()
.map(ProjectState::getConfig)
.map(CachedProjectConfig::getRulesId)
.anyMatch(Optional::isPresent);
}
public Project getProject() {
return cachedConfig.getProject();
}
public Project.NameKey getNameKey() {
return getProject().getNameKey();
}
public String getName() {
return getNameKey().get();
}
public CachedProjectConfig getConfig() {
return cachedConfig;
}
public ProjectLevelConfig getConfig(String fileName) {
checkState(fileName.endsWith(".config"), "file name must end in .config. is: " + fileName);
return new ProjectLevelConfig(
fileName, this, cachedConfig.getParsedProjectLevelConfigs().get(fileName));
}
public long getMaxObjectSizeLimit() {
return cachedConfig.getMaxObjectSizeLimit();
}
public boolean statePermitsRead() {
return getProject().getState().permitsRead();
}
public void checkStatePermitsRead() throws ResourceConflictException {
if (!statePermitsRead()) {
throw new ResourceConflictException(
"project state " + getProject().getState().name() + " does not permit read");
}
}
public boolean statePermitsWrite() {
return getProject().getState().permitsWrite();
}
public void checkStatePermitsWrite() throws ResourceConflictException {
if (!statePermitsWrite()) {
throw new ResourceConflictException(
"project state " + getProject().getState().name() + " does not permit write");
}
}
public static class EffectiveMaxObjectSizeLimit {
public long value;
public String summary;
}
private static final String MAY_NOT_SET = "This project may not set a higher limit.";
@VisibleForTesting
public static final String INHERITED_FROM_PARENT = "Inherited from parent project '%s'.";
@VisibleForTesting
public static final String OVERRIDDEN_BY_PARENT =
"Overridden by parent project '%s'. " + MAY_NOT_SET;
@VisibleForTesting
public static final String INHERITED_FROM_GLOBAL = "Inherited from the global config.";
@VisibleForTesting
public static final String OVERRIDDEN_BY_GLOBAL =
"Overridden by the global config. " + MAY_NOT_SET;
public EffectiveMaxObjectSizeLimit getEffectiveMaxObjectSizeLimit() {
EffectiveMaxObjectSizeLimit result = new EffectiveMaxObjectSizeLimit();
result.value = cachedConfig.getMaxObjectSizeLimit();
if (inheritProjectMaxObjectSizeLimit) {
for (ProjectState parent : parents()) {
long parentValue = parent.cachedConfig.getMaxObjectSizeLimit();
if (parentValue > 0 && result.value > 0) {
if (parentValue < result.value) {
result.value = parentValue;
result.summary =
String.format(OVERRIDDEN_BY_PARENT, parent.cachedConfig.getProject().getNameKey());
}
} else if (parentValue > 0) {
result.value = parentValue;
result.summary =
String.format(INHERITED_FROM_PARENT, parent.cachedConfig.getProject().getNameKey());
}
}
}
if (globalMaxObjectSizeLimit > 0 && result.value > 0) {
if (globalMaxObjectSizeLimit < result.value) {
result.value = globalMaxObjectSizeLimit;
result.summary = OVERRIDDEN_BY_GLOBAL;
}
} else if (globalMaxObjectSizeLimit > result.value) {
// zero means "no limit", in this case the max is more limiting
result.value = globalMaxObjectSizeLimit;
result.summary = INHERITED_FROM_GLOBAL;
}
return result;
}
/** Get the sections that pertain only to this project. */
List getLocalAccessSections() {
if (localAccessSections != null) {
return localAccessSections;
}
List sm = new ArrayList<>(cachedConfig.getAccessSections().values().size());
for (AccessSection section : cachedConfig.getAccessSections().values()) {
SectionMatcher matcher = SectionMatcher.wrap(getNameKey(), section);
if (matcher != null) {
sm.add(matcher);
}
}
localAccessSections = sm;
return localAccessSections;
}
/**
* Obtain all local and inherited sections. This collection is looked up dynamically and is not
* cached. Callers should try to cache this result per-request as much as possible.
*/
public List getAllSections() {
if (isAllProjects) {
return getLocalAccessSections();
}
List all = new ArrayList<>();
for (ProjectState s : tree()) {
all.addAll(s.getLocalAccessSections());
}
return all;
}
/**
* Returns all {@link AccountGroup}'s to which the owner privilege for 'refs/*' is assigned for
* this project (the local owners), if there are no local owners the local owners of the nearest
* parent project that has local owners are returned
*/
public Set getOwners() {
for (ProjectState p : tree()) {
if (!p.localOwners.isEmpty()) {
return p.localOwners;
}
}
return Collections.emptySet();
}
/**
* Returns all {@link AccountGroup}'s that are allowed to administrate the complete project. This
* includes all groups to which the owner privilege for 'refs/*' is assigned for this project (the
* local owners) and all groups to which the owner privilege for 'refs/*' is assigned for one of
* the parent projects (the inherited owners).
*/
public Set getAllOwners() {
Set result = new HashSet<>();
for (ProjectState p : tree()) {
result.addAll(p.localOwners);
}
return result;
}
/**
* Returns an iterable that walks through this project and then the parents of this project.
* Starts from this project and progresses up the hierarchy to All-Projects.
*/
public Iterable tree() {
return () -> new ProjectHierarchyIterator(projectCache, allProjectsName, ProjectState.this);
}
/**
* Returns an iterable that walks in-order from All-Projects through the project hierarchy to this
* project.
*/
public Iterable treeInOrder() {
List projects = Lists.newArrayList(tree());
Collections.reverse(projects);
return projects;
}
/**
* Returns an iterable that walks through the parents of this project. Starts from the immediate
* parent of this project and progresses up the hierarchy to All-Projects.
*/
public FluentIterable parents() {
return FluentIterable.from(tree()).skip(1);
}
public boolean isAllProjects() {
return isAllProjects;
}
public boolean isAllUsers() {
return isAllUsers;
}
public boolean is(BooleanProjectConfig config) {
for (ProjectState s : tree()) {
switch (s.getProject().getBooleanConfig(config)) {
case TRUE:
return true;
case FALSE:
return false;
case INHERIT:
default:
continue;
}
}
return false;
}
/** Get all submit requirements for a project, including those from parent projects. */
public Map getSubmitRequirements() {
Map requirements = new LinkedHashMap<>();
for (ProjectState s : treeInOrder()) {
for (SubmitRequirement requirement : s.getConfig().getSubmitRequirementSections().values()) {
String lowerName = requirement.name().toLowerCase();
SubmitRequirement old = requirements.get(lowerName);
if (old == null || old.allowOverrideInChildProjects()) {
requirements.put(lowerName, requirement);
}
}
}
return ImmutableMap.copyOf(requirements);
}
/** All available label types. */
public LabelTypes getLabelTypes() {
Map types = new LinkedHashMap<>();
for (ProjectState s : treeInOrder()) {
for (LabelType type : s.getConfig().getLabelSections().values()) {
String lower = type.getName().toLowerCase();
LabelType old = types.get(lower);
if (old == null || old.isCanOverride()) {
types.put(lower, type);
}
}
}
List all = Lists.newArrayListWithCapacity(types.size());
for (LabelType type : types.values()) {
if (!type.getValues().isEmpty()) {
all.add(type);
}
}
return new LabelTypes(Collections.unmodifiableList(all));
}
/** All available label types for this change. */
public LabelTypes getLabelTypes(ChangeNotes notes) {
return getLabelTypes(notes.getChange().getDest());
}
/** All available label types for this branch. */
public LabelTypes getLabelTypes(BranchNameKey destination) {
List all = getLabelTypes().getLabelTypes();
List r = Lists.newArrayListWithCapacity(all.size());
for (LabelType l : all) {
List refs = l.getRefPatterns();
if (refs == null) {
r.add(l);
} else {
for (String refPattern : refs) {
if (refPattern.contains("${")) {
logger.atWarning().log(
"Ref pattern for label %s in project %s contains illegal expanded parameters: %s."
+ " Ref pattern will be ignored.",
l, getName(), refPattern);
continue;
}
if (AccessSection.isValidRefSectionName(refPattern) && match(destination, refPattern)) {
r.add(l);
break;
}
}
}
}
return new LabelTypes(r);
}
public List getCommentLinks() {
Map cls = new LinkedHashMap<>();
for (CommentLinkInfo cl : commentLinks) {
cls.put(cl.name.toLowerCase(), cl);
}
for (ProjectState s : treeInOrder()) {
for (StoredCommentLinkInfo cl : s.getConfig().getCommentLinkSections().values()) {
String name = cl.getName().toLowerCase();
if (cl.getOverrideOnly()) {
CommentLinkInfo parent = cls.get(name);
if (parent == null) {
continue; // Ignore invalid overrides.
}
cls.put(name, StoredCommentLinkInfo.fromInfo(parent, cl.getEnabled()).toInfo());
} else {
cls.put(name, cl.toInfo());
}
}
}
return ImmutableList.copyOf(cls.values());
}
/**
* Returns the {@link PluginConfig} that got parsed from the {@code plugins} section of {@code
* project.config}. The returned instance is a defensive copy of the cached value. Returns an
* empty config in case we find no config for the given plugin name. This is useful when calling
* {@code PluginConfig#withInheritance(ProjectState.Factory)}
*/
public PluginConfig getPluginConfig(String pluginName) {
Config config = new Config();
String cachedPluginConfig = getConfig().getPluginConfigs().get(pluginName);
if (cachedPluginConfig != null) {
try {
config.fromText(cachedPluginConfig);
} catch (ConfigInvalidException e) {
// This is OK to propagate as IllegalStateException because it's a programmer error.
// The config was converted to a String using Config#toText. So #fromText must not
// throw a ConfigInvalidException
throw new IllegalStateException("invalid plugin config for " + pluginName, e);
}
}
return PluginConfig.create(pluginName, config, getConfig());
}
public Optional getBranchOrderSection() {
for (ProjectState s : tree()) {
Optional section = s.getConfig().getBranchOrderSection();
if (section.isPresent()) {
return section;
}
}
return Optional.empty();
}
public Collection getSubscribeSections(BranchNameKey branch) {
Collection ret = new ArrayList<>();
for (ProjectState s : tree()) {
ret.addAll(s.getConfig().getSubscribeSections(branch));
}
return ret;
}
public Set getAllGroups() {
return getGroups(getAllSections());
}
public Set getLocalGroups() {
return getGroups(getLocalAccessSections());
}
public SubmitType getSubmitType() {
for (ProjectState s : tree()) {
SubmitType t = s.getProject().getSubmitType();
if (t != SubmitType.INHERIT) {
return t;
}
}
return Project.DEFAULT_ALL_PROJECTS_SUBMIT_TYPE;
}
private static Set getGroups(List sectionMatcherList) {
final Set all = new HashSet<>();
for (SectionMatcher matcher : sectionMatcherList) {
final AccessSection section = matcher.getSection();
for (Permission permission : section.getPermissions()) {
for (PermissionRule rule : permission.getRules()) {
all.add(rule.getGroup());
}
}
}
return all;
}
public ProjectData toProjectData() {
ProjectData project = null;
for (ProjectState state : treeInOrder()) {
project = new ProjectData(state.getProject(), Optional.ofNullable(project));
}
return project;
}
private boolean match(BranchNameKey destination, String refPattern) {
return RefPatternMatcher.getMatcher(refPattern).match(destination.branch(), null);
}
}
