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Factor out labelValue length check to abstract base class and small name fix

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=131902964
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shikhman 2016-08-31 19:47:13 -07:00 • committed by Ben McIlwain
parent a0f1a8b0bc
commit c11ac3129f
7 changed files with 80 additions and 42 deletions
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48
java/google/registry/monitoring/metrics/MetricsUtils.java Normal file
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// Copyright 2016 The Domain Registry Authors. All Rights Reserved.
//
// 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 google.registry.monitoring.metrics;
import static com.google.common.base.Preconditions.checkArgument;
import com.google.common.collect.ImmutableList;
/** Static helper methods for the Metrics library. */
final class MetricsUtils {
private static final String LABEL_SIZE_ERROR =
"The count of labelValues must be equal to the underlying Metric's count of labels.";
private MetricsUtils() {}
/**
* Check that the given {@code labelValues} match in count with the count of {@link
* LabelDescriptor} instances on the given {@code metric}
*
* @throws IllegalArgumentException if there is a count mismatch.
*/
static void checkLabelValuesLength(Metric<?> metric, String[] labelValues) {
checkArgument(labelValues.length == metric.getMetricSchema().labels().size(), LABEL_SIZE_ERROR);
}
/**
* Check that the given {@code labelValues} match in count with the count of {@link
* LabelDescriptor} instances on the given {@code metric}
*
* @throws IllegalArgumentException if there is a count mismatch.
*/
static void checkLabelValuesLength(Metric<?> metric, ImmutableList<String> labelValues) {
checkArgument(labelValues.size() == metric.getMetricSchema().labels().size(), LABEL_SIZE_ERROR);
}
}