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// Copyright (C) 2012 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.change;
import static java.util.stream.Collectors.joining;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.MoreObjects;
import com.google.common.base.Strings;
import com.google.common.collect.FluentIterable;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ListMultimap;
import com.google.common.collect.Sets;
import com.google.gerrit.common.data.ParameterizedString;
import com.google.gerrit.extensions.api.changes.SubmitInput;
import com.google.gerrit.extensions.common.ChangeInfo;
import com.google.gerrit.extensions.restapi.AuthException;
import com.google.gerrit.extensions.restapi.ResourceConflictException;
import com.google.gerrit.extensions.restapi.RestApiException;
import com.google.gerrit.extensions.restapi.RestModifyView;
import com.google.gerrit.extensions.restapi.UnprocessableEntityException;
import com.google.gerrit.extensions.webui.UiAction;
import com.google.gerrit.reviewdb.client.Branch;
import com.google.gerrit.reviewdb.client.Change;
import com.google.gerrit.reviewdb.client.ChangeMessage;
import com.google.gerrit.reviewdb.client.PatchSet;
import com.google.gerrit.reviewdb.client.Project;
import com.google.gerrit.reviewdb.client.RevId;
import com.google.gerrit.reviewdb.server.ReviewDb;
import com.google.gerrit.server.ChangeMessagesUtil;
import com.google.gerrit.server.ChangeUtil;
import com.google.gerrit.server.CurrentUser;
import com.google.gerrit.server.IdentifiedUser;
import com.google.gerrit.server.PatchSetUtil;
import com.google.gerrit.server.ProjectUtil;
import com.google.gerrit.server.account.AccountsCollection;
import com.google.gerrit.server.config.GerritServerConfig;
import com.google.gerrit.server.git.ChangeSet;
import com.google.gerrit.server.git.GitRepositoryManager;
import com.google.gerrit.server.git.MergeOp;
import com.google.gerrit.server.git.MergeSuperSet;
import com.google.gerrit.server.notedb.ChangeNotes;
import com.google.gerrit.server.permissions.ChangePermission;
import com.google.gerrit.server.permissions.PermissionBackend;
import com.google.gerrit.server.permissions.PermissionBackendException;
import com.google.gerrit.server.project.NoSuchChangeException;
import com.google.gerrit.server.query.change.ChangeData;
import com.google.gerrit.server.query.change.InternalChangeQuery;
import com.google.gerrit.server.update.UpdateException;
import com.google.gwtorm.server.OrmException;
import com.google.gwtorm.server.OrmRuntimeException;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.Singleton;
import java.io.IOException;
import java.util.Collection;
import java.util.EnumSet;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Queue;
import java.util.Set;
import org.eclipse.jgit.errors.ConfigInvalidException;
import org.eclipse.jgit.errors.RepositoryNotFoundException;
import org.eclipse.jgit.lib.Config;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevWalk;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@Singleton
public class Submit
implements RestModifyView, UiAction {
private static final Logger log = LoggerFactory.getLogger(Submit.class);
private static final String DEFAULT_TOOLTIP = "Submit patch set ${patchSet} into ${branch}";
private static final String DEFAULT_TOOLTIP_ANCESTORS =
"Submit patch set ${patchSet} and ancestors (${submitSize} changes "
+ "altogether) into ${branch}";
private static final String DEFAULT_TOPIC_TOOLTIP =
"Submit all ${topicSize} changes of the same topic "
+ "(${submitSize} changes including ancestors and other "
+ "changes related by topic)";
private static final String BLOCKED_SUBMIT_TOOLTIP =
"This change depends on other changes which are not ready";
private static final String BLOCKED_HIDDEN_SUBMIT_TOOLTIP =
"This change depends on other hidden changes which are not ready";
private static final String BLOCKED_WORK_IN_PROGRESS = "This change is marked work in progress";
private static final String CLICK_FAILURE_TOOLTIP = "Clicking the button would fail";
private static final String CHANGE_UNMERGEABLE = "Problems with integrating this change";
private static final String CHANGES_NOT_MERGEABLE = "Problems with change(s): ";
public static class Output {
transient Change change;
private Output(Change c) {
change = c;
}
}
/**
* Subclass of {@link SubmitInput} with special bits that may be flipped for testing purposes
* only.
*/
@VisibleForTesting
public static class TestSubmitInput extends SubmitInput {
public boolean failAfterRefUpdates;
/**
* For each change being submitted, an element is removed from this queue and, if the value is
* true, a bogus ref update is added to the batch, in order to generate a lock failure during
* execution.
*/
public Queue generateLockFailures;
}
private final Provider dbProvider;
private final GitRepositoryManager repoManager;
private final PermissionBackend permissionBackend;
private final ChangeData.Factory changeDataFactory;
private final ChangeMessagesUtil cmUtil;
private final ChangeNotes.Factory changeNotesFactory;
private final Provider mergeOpProvider;
private final Provider mergeSuperSet;
private final AccountsCollection accounts;
private final String label;
private final String labelWithParents;
private final ParameterizedString titlePattern;
private final ParameterizedString titlePatternWithAncestors;
private final String submitTopicLabel;
private final ParameterizedString submitTopicTooltip;
private final boolean submitWholeTopic;
private final Provider queryProvider;
private final PatchSetUtil psUtil;
@Inject
Submit(
Provider dbProvider,
GitRepositoryManager repoManager,
PermissionBackend permissionBackend,
ChangeData.Factory changeDataFactory,
ChangeMessagesUtil cmUtil,
ChangeNotes.Factory changeNotesFactory,
Provider mergeOpProvider,
Provider mergeSuperSet,
AccountsCollection accounts,
@GerritServerConfig Config cfg,
Provider queryProvider,
PatchSetUtil psUtil) {
this.dbProvider = dbProvider;
this.repoManager = repoManager;
this.permissionBackend = permissionBackend;
this.changeDataFactory = changeDataFactory;
this.cmUtil = cmUtil;
this.changeNotesFactory = changeNotesFactory;
this.mergeOpProvider = mergeOpProvider;
this.mergeSuperSet = mergeSuperSet;
this.accounts = accounts;
this.label =
MoreObjects.firstNonNull(
Strings.emptyToNull(cfg.getString("change", null, "submitLabel")), "Submit");
this.labelWithParents =
MoreObjects.firstNonNull(
Strings.emptyToNull(cfg.getString("change", null, "submitLabelWithParents")),
"Submit including parents");
this.titlePattern =
new ParameterizedString(
MoreObjects.firstNonNull(
cfg.getString("change", null, "submitTooltip"), DEFAULT_TOOLTIP));
this.titlePatternWithAncestors =
new ParameterizedString(
MoreObjects.firstNonNull(
cfg.getString("change", null, "submitTooltipAncestors"),
DEFAULT_TOOLTIP_ANCESTORS));
submitWholeTopic = wholeTopicEnabled(cfg);
this.submitTopicLabel =
MoreObjects.firstNonNull(
Strings.emptyToNull(cfg.getString("change", null, "submitTopicLabel")),
"Submit whole topic");
this.submitTopicTooltip =
new ParameterizedString(
MoreObjects.firstNonNull(
cfg.getString("change", null, "submitTopicTooltip"), DEFAULT_TOPIC_TOOLTIP));
this.queryProvider = queryProvider;
this.psUtil = psUtil;
}
@Override
public Output apply(RevisionResource rsrc, SubmitInput input)
throws RestApiException, RepositoryNotFoundException, IOException, OrmException,
PermissionBackendException, UpdateException, ConfigInvalidException {
input.onBehalfOf = Strings.emptyToNull(input.onBehalfOf);
IdentifiedUser submitter;
if (input.onBehalfOf != null) {
submitter = onBehalfOf(rsrc, input);
} else {
rsrc.permissions().check(ChangePermission.SUBMIT);
submitter = rsrc.getUser().asIdentifiedUser();
}
return new Output(mergeChange(rsrc, submitter, input));
}
public Change mergeChange(RevisionResource rsrc, IdentifiedUser submitter, SubmitInput input)
throws OrmException, RestApiException, IOException, UpdateException, ConfigInvalidException,
PermissionBackendException {
Change change = rsrc.getChange();
if (!change.getStatus().isOpen()) {
throw new ResourceConflictException("change is " + ChangeUtil.status(change));
} else if (!ProjectUtil.branchExists(repoManager, change.getDest())) {
throw new ResourceConflictException(
String.format("destination branch \"%s\" not found.", change.getDest().get()));
} else if (!rsrc.getPatchSet().getId().equals(change.currentPatchSetId())) {
// TODO Allow submitting non-current revision by changing the current.
throw new ResourceConflictException(
String.format(
"revision %s is not current revision", rsrc.getPatchSet().getRevision().get()));
}
try (MergeOp op = mergeOpProvider.get()) {
ReviewDb db = dbProvider.get();
op.merge(db, change, submitter, true, input, false);
try {
change =
changeNotesFactory.createChecked(db, change.getProject(), change.getId()).getChange();
} catch (NoSuchChangeException e) {
throw new ResourceConflictException("change is deleted");
}
}
switch (change.getStatus()) {
case MERGED:
return change;
case NEW:
ChangeMessage msg = getConflictMessage(rsrc);
if (msg != null) {
throw new ResourceConflictException(msg.getMessage());
}
// $FALL-THROUGH$
case ABANDONED:
default:
throw new ResourceConflictException("change is " + ChangeUtil.status(change));
}
}
/**
* @param cd the change the user is currently looking at
* @param cs set of changes to be submitted at once
* @param user the user who is checking to submit
* @return a reason why any of the changes is not submittable or null
*/
private String problemsForSubmittingChangeset(ChangeData cd, ChangeSet cs, CurrentUser user) {
try {
if (cs.furtherHiddenChanges()) {
return BLOCKED_HIDDEN_SUBMIT_TOOLTIP;
}
for (ChangeData c : cs.changes()) {
Set can =
permissionBackend
.user(user)
.database(dbProvider)
.change(c)
.test(EnumSet.of(ChangePermission.READ, ChangePermission.SUBMIT));
if (!can.contains(ChangePermission.READ)) {
return BLOCKED_HIDDEN_SUBMIT_TOOLTIP;
}
if (!can.contains(ChangePermission.SUBMIT)) {
return BLOCKED_SUBMIT_TOOLTIP;
}
if (c.change().isWorkInProgress()) {
return BLOCKED_WORK_IN_PROGRESS;
}
MergeOp.checkSubmitRule(c, false);
}
Collection unmergeable = unmergeableChanges(cs);
if (unmergeable == null) {
return CLICK_FAILURE_TOOLTIP;
} else if (!unmergeable.isEmpty()) {
for (ChangeData c : unmergeable) {
if (c.change().getKey().equals(cd.change().getKey())) {
return CHANGE_UNMERGEABLE;
}
}
return CHANGES_NOT_MERGEABLE
+ unmergeable.stream().map(c -> c.getId().toString()).collect(joining(", "));
}
} catch (ResourceConflictException e) {
return BLOCKED_SUBMIT_TOOLTIP;
} catch (PermissionBackendException | OrmException | IOException e) {
log.error("Error checking if change is submittable", e);
throw new OrmRuntimeException("Could not determine problems for the change", e);
}
return null;
}
@Override
public UiAction.Description getDescription(RevisionResource resource) {
Change change = resource.getChange();
if (!change.getStatus().isOpen()
|| !resource.isCurrent()
|| !resource.permissions().testOrFalse(ChangePermission.SUBMIT)) {
return null; // submit not visible
}
ReviewDb db = dbProvider.get();
ChangeData cd = changeDataFactory.create(db, resource.getNotes());
try {
MergeOp.checkSubmitRule(cd, false);
} catch (ResourceConflictException e) {
return null; // submit not visible
} catch (OrmException e) {
log.error("Error checking if change is submittable", e);
throw new OrmRuntimeException("Could not determine problems for the change", e);
}
ChangeSet cs;
try {
cs = mergeSuperSet.get().completeChangeSet(db, cd.change(), resource.getUser());
} catch (OrmException | IOException | PermissionBackendException e) {
throw new OrmRuntimeException(
"Could not determine complete set of changes to be submitted", e);
}
String topic = change.getTopic();
int topicSize = 0;
if (!Strings.isNullOrEmpty(topic)) {
topicSize = getChangesByTopic(topic).size();
}
boolean treatWithTopic = submitWholeTopic && !Strings.isNullOrEmpty(topic) && topicSize > 1;
String submitProblems = problemsForSubmittingChangeset(cd, cs, resource.getUser());
Boolean enabled;
try {
// Recheck mergeability rather than using value stored in the index,
// which may be stale.
// TODO(dborowitz): This is ugly; consider providing a way to not read
// stored fields from the index in the first place.
// cd.setMergeable(null);
// That was done in unmergeableChanges which was called by
// problemsForSubmittingChangeset, so now it is safe to read from
// the cache, as it yields the same result.
enabled = cd.isMergeable();
} catch (OrmException e) {
throw new OrmRuntimeException("Could not determine mergeability", e);
}
if (submitProblems != null) {
return new UiAction.Description()
.setLabel(treatWithTopic ? submitTopicLabel : (cs.size() > 1) ? labelWithParents : label)
.setTitle(submitProblems)
.setVisible(true)
.setEnabled(false);
}
if (treatWithTopic) {
Map params =
ImmutableMap.of(
"topicSize", String.valueOf(topicSize),
"submitSize", String.valueOf(cs.size()));
return new UiAction.Description()
.setLabel(submitTopicLabel)
.setTitle(Strings.emptyToNull(submitTopicTooltip.replace(params)))
.setVisible(true)
.setEnabled(Boolean.TRUE.equals(enabled));
}
RevId revId = resource.getPatchSet().getRevision();
Map params =
ImmutableMap.of(
"patchSet", String.valueOf(resource.getPatchSet().getPatchSetId()),
"branch", change.getDest().getShortName(),
"commit", ObjectId.fromString(revId.get()).abbreviate(7).name(),
"submitSize", String.valueOf(cs.size()));
ParameterizedString tp = cs.size() > 1 ? titlePatternWithAncestors : titlePattern;
return new UiAction.Description()
.setLabel(cs.size() > 1 ? labelWithParents : label)
.setTitle(Strings.emptyToNull(tp.replace(params)))
.setVisible(true)
.setEnabled(Boolean.TRUE.equals(enabled));
}
/**
* If the merge was attempted and it failed the system usually writes a comment as a ChangeMessage
* and sets status to NEW. Find the relevant message and return it.
*/
public ChangeMessage getConflictMessage(RevisionResource rsrc) throws OrmException {
return FluentIterable.from(
cmUtil.byPatchSet(dbProvider.get(), rsrc.getNotes(), rsrc.getPatchSet().getId()))
.filter(cm -> cm.getAuthor() == null)
.last()
.orNull();
}
public Collection unmergeableChanges(ChangeSet cs) throws OrmException, IOException {
Set mergeabilityMap = new HashSet<>();
for (ChangeData change : cs.changes()) {
mergeabilityMap.add(change);
}
ListMultimap cbb = cs.changesByBranch();
for (Branch.NameKey branch : cbb.keySet()) {
Collection targetBranch = cbb.get(branch);
HashMap commits = findCommits(targetBranch, branch.getParentKey());
Set allParents = Sets.newHashSetWithExpectedSize(cs.size());
for (RevCommit commit : commits.values()) {
for (RevCommit parent : commit.getParents()) {
allParents.add(parent.getId());
}
}
for (ChangeData change : targetBranch) {
RevCommit commit = commits.get(change.getId());
boolean isMergeCommit = commit.getParentCount() > 1;
boolean isLastInChain = !allParents.contains(commit.getId());
// Recheck mergeability rather than using value stored in the index,
// which may be stale.
// TODO(dborowitz): This is ugly; consider providing a way to not read
// stored fields from the index in the first place.
change.setMergeable(null);
Boolean mergeable = change.isMergeable();
if (mergeable == null) {
// Skip whole check, cannot determine if mergeable
return null;
}
if (mergeable) {
mergeabilityMap.remove(change);
}
if (isLastInChain && isMergeCommit && mergeable) {
for (ChangeData c : targetBranch) {
mergeabilityMap.remove(c);
}
break;
}
}
}
return mergeabilityMap;
}
private HashMap findCommits(
Collection changes, Project.NameKey project) throws IOException, OrmException {
HashMap commits = new HashMap<>();
try (Repository repo = repoManager.openRepository(project);
RevWalk walk = new RevWalk(repo)) {
for (ChangeData change : changes) {
RevCommit commit =
walk.parseCommit(
ObjectId.fromString(
psUtil.current(dbProvider.get(), change.notes()).getRevision().get()));
commits.put(change.getId(), commit);
}
}
return commits;
}
private IdentifiedUser onBehalfOf(RevisionResource rsrc, SubmitInput in)
throws AuthException, UnprocessableEntityException, OrmException, PermissionBackendException,
IOException, ConfigInvalidException {
PermissionBackend.ForChange perm = rsrc.permissions().database(dbProvider);
perm.check(ChangePermission.SUBMIT);
perm.check(ChangePermission.SUBMIT_AS);
CurrentUser caller = rsrc.getUser();
IdentifiedUser submitter = accounts.parseOnBehalfOf(caller, in.onBehalfOf);
try {
perm.user(submitter).check(ChangePermission.READ);
} catch (AuthException e) {
throw new UnprocessableEntityException(
String.format("on_behalf_of account %s cannot see change", submitter.getAccountId()));
}
return submitter;
}
public static boolean wholeTopicEnabled(Config config) {
return config.getBoolean("change", null, "submitWholeTopic", false);
}
private List getChangesByTopic(String topic) {
try {
return queryProvider.get().byTopicOpen(topic);
} catch (OrmException e) {
throw new OrmRuntimeException(e);
}
}
public static class CurrentRevision implements RestModifyView {
private final Provider dbProvider;
private final Submit submit;
private final ChangeJson.Factory json;
private final PatchSetUtil psUtil;
@Inject
CurrentRevision(
Provider dbProvider,
Submit submit,
ChangeJson.Factory json,
PatchSetUtil psUtil) {
this.dbProvider = dbProvider;
this.submit = submit;
this.json = json;
this.psUtil = psUtil;
}
@Override
public ChangeInfo apply(ChangeResource rsrc, SubmitInput input)
throws RestApiException, RepositoryNotFoundException, IOException, OrmException,
PermissionBackendException, UpdateException, ConfigInvalidException {
PatchSet ps = psUtil.current(dbProvider.get(), rsrc.getNotes());
if (ps == null) {
throw new ResourceConflictException("current revision is missing");
}
Output out = submit.apply(new RevisionResource(rsrc, ps), input);
return json.noOptions().format(out.change);
}
}
}
