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StaticSelector.java
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StaticSelector.java
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/*
* 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.facebook.presto.resourceGroups;
import com.facebook.presto.spi.resourceGroups.ResourceGroupId;
import com.facebook.presto.spi.resourceGroups.SelectionCriteria;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import java.util.List;
import java.util.Optional;
import java.util.Set;
import java.util.regex.Pattern;
import static java.util.Objects.requireNonNull;
public class StaticSelector
implements ResourceGroupSelector
{
private final Optional<Pattern> userRegex;
private final Optional<Pattern> sourceRegex;
private final Set<String> clientTags;
private final Optional<String> queryType;
private final ResourceGroupIdTemplate group;
public StaticSelector(Optional<Pattern> userRegex, Optional<Pattern> sourceRegex, Optional<List<String>> clientTags, Optional<String> queryType, ResourceGroupIdTemplate group)
{
this.userRegex = requireNonNull(userRegex, "userRegex is null");
this.sourceRegex = requireNonNull(sourceRegex, "sourceRegex is null");
requireNonNull(clientTags, "clientTags is null");
this.clientTags = ImmutableSet.copyOf(clientTags.orElse(ImmutableList.of()));
this.queryType = requireNonNull(queryType, "queryType is null");
this.group = requireNonNull(group, "group is null");
}
public Optional<ResourceGroupId> match(SelectionCriteria criteria)
{
if (userRegex.isPresent() && !userRegex.get().matcher(criteria.getUser()).matches()) {
return Optional.empty();
}
if (sourceRegex.isPresent()) {
String source = criteria.getSource().orElse("");
if (!sourceRegex.get().matcher(source).matches()) {
return Optional.empty();
}
}
if (!clientTags.isEmpty() && !criteria.getTags().containsAll(clientTags)) {
return Optional.empty();
}
if (queryType.isPresent()) {
String contextQueryType = criteria.getQueryType().orElse("");
if (!queryType.get().equalsIgnoreCase(contextQueryType)) {
return Optional.empty();
}
}
return Optional.of(group.expandTemplate(criteria));
}
@VisibleForTesting
public Optional<Pattern> getUserRegex()
{
return userRegex;
}
}