| // 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.query.change; |
| |
| import com.google.common.collect.Lists; |
| import com.google.gerrit.extensions.common.ListChangesOption; |
| import com.google.gerrit.extensions.restapi.AuthException; |
| import com.google.gerrit.extensions.restapi.BadRequestException; |
| import com.google.gerrit.extensions.restapi.RestReadView; |
| import com.google.gerrit.extensions.restapi.TopLevelResource; |
| import com.google.gerrit.server.CurrentUser; |
| import com.google.gerrit.server.IdentifiedUser; |
| import com.google.gerrit.server.change.ChangeJson; |
| import com.google.gerrit.server.change.ChangeJson.ChangeInfo; |
| import com.google.gerrit.server.query.QueryParseException; |
| import com.google.gwtorm.server.OrmException; |
| import com.google.inject.Inject; |
| import com.google.inject.Provider; |
| |
| import org.kohsuke.args4j.Option; |
| |
| import java.util.BitSet; |
| import java.util.Collections; |
| import java.util.EnumSet; |
| import java.util.List; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| public class QueryChanges implements RestReadView<TopLevelResource> { |
| private final ChangeJson json; |
| private final QueryProcessor imp; |
| private final Provider<CurrentUser> user; |
| private boolean reverse; |
| private EnumSet<ListChangesOption> options; |
| |
| @Option(name = "--query", aliases = {"-q"}, metaVar = "QUERY", usage = "Query string") |
| private List<String> queries; |
| |
| @Option(name = "--limit", aliases = {"-n"}, metaVar = "CNT", usage = "Maximum number of results to return") |
| public void setLimit(int limit) { |
| imp.setLimit(limit); |
| } |
| |
| @Option(name = "-o", usage = "Output options per change") |
| public void addOption(ListChangesOption o) { |
| options.add(o); |
| } |
| |
| @Option(name = "-O", usage = "Output option flags, in hex") |
| void setOptionFlagsHex(String hex) { |
| options.addAll(ListChangesOption.fromBits(Integer.parseInt(hex, 16))); |
| } |
| |
| @Option(name = "-P", metaVar = "SORTKEY", usage = "Previous changes before SORTKEY") |
| public void setSortKeyAfter(String key) { |
| // Querying for the prior page of changes requires sortkey_after predicate. |
| // Changes are shown most recent->least recent. The previous page of |
| // results contains changes that were updated after the given key. |
| imp.setSortkeyAfter(key); |
| reverse = true; |
| } |
| |
| @Option(name = "-N", metaVar = "SORTKEY", usage = "Next changes after SORTKEY") |
| public void setSortKeyBefore(String key) { |
| // Querying for the next page of changes requires sortkey_before predicate. |
| // Changes are shown most recent->least recent. The next page contains |
| // changes that were updated before the given key. |
| imp.setSortkeyBefore(key); |
| } |
| |
| @Option(name = "--start", aliases = {"-S"}, metaVar = "CNT", usage = "Number of changes to skip") |
| public void setStart(int start) { |
| imp.setStart(start); |
| } |
| |
| @Inject |
| QueryChanges(ChangeJson json, QueryProcessor qp, Provider<CurrentUser> user) { |
| this.json = json; |
| this.imp = qp; |
| this.user = user; |
| |
| options = EnumSet.noneOf(ListChangesOption.class); |
| } |
| |
| public void addQuery(String query) { |
| if (queries == null) { |
| queries = Lists.newArrayList(); |
| } |
| queries.add(query); |
| } |
| |
| public String getQuery(int i) { |
| return queries.get(i); |
| } |
| |
| @Override |
| public List<?> apply(TopLevelResource rsrc) |
| throws BadRequestException, AuthException, OrmException { |
| List<List<ChangeInfo>> out; |
| try { |
| out = query(); |
| } catch (QueryParseException e) { |
| // This is a hack to detect an operator that requires authentication. |
| Pattern p = Pattern.compile("^Error in operator (.*:self)$"); |
| Matcher m = p.matcher(e.getMessage()); |
| if (m.matches()) { |
| String op = m.group(1); |
| throw new AuthException("Must be signed-in to use " + op); |
| } |
| throw new BadRequestException(e.getMessage()); |
| } |
| return out.size() == 1 ? out.get(0) : out; |
| } |
| |
| private List<List<ChangeInfo>> query() |
| throws OrmException, QueryParseException { |
| if (imp.isDisabled()) { |
| throw new QueryParseException("query disabled"); |
| } |
| if (queries == null || queries.isEmpty()) { |
| queries = Collections.singletonList("status:open"); |
| } else if (queries.size() > 10) { |
| // Hard-code a default maximum number of queries to prevent |
| // users from submitting too much to the server in a single call. |
| throw new QueryParseException("limit of 10 queries"); |
| } |
| |
| IdentifiedUser self = null; |
| try { |
| if (user.get().isIdentifiedUser()) { |
| self = (IdentifiedUser) user.get(); |
| self.asyncStarredChanges(); |
| } |
| return query0(); |
| } finally { |
| if (self != null) { |
| self.abortStarredChanges(); |
| } |
| } |
| } |
| |
| private List<List<ChangeInfo>> query0() throws OrmException, |
| QueryParseException { |
| int cnt = queries.size(); |
| BitSet more = new BitSet(cnt); |
| List<List<ChangeData>> data = imp.queryChanges(queries); |
| for (int n = 0; n < cnt; n++) { |
| List<ChangeData> changes = data.get(n); |
| if (imp.getLimit() > 0 && changes.size() > imp.getLimit()) { |
| if (reverse) { |
| changes = changes.subList(1, changes.size()); |
| } else { |
| changes = changes.subList(0, imp.getLimit()); |
| } |
| data.set(n, changes); |
| more.set(n, true); |
| } |
| } |
| |
| List<List<ChangeInfo>> res = json.addOptions(options).formatList2(data); |
| for (int n = 0; n < cnt; n++) { |
| List<ChangeInfo> info = res.get(n); |
| if (more.get(n) && !info.isEmpty()) { |
| if (reverse) { |
| info.get(0)._moreChanges = true; |
| } else { |
| info.get(info.size() - 1)._moreChanges = true; |
| } |
| } |
| } |
| return res; |
| } |
| } |