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// Copyright (C) 2015 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.metrics.dropwizard;
import com.codahale.metrics.Metric;
import com.google.gerrit.extensions.registration.DynamicMap;
import com.google.gerrit.extensions.restapi.AuthException;
import com.google.gerrit.extensions.restapi.ChildCollection;
import com.google.gerrit.extensions.restapi.IdString;
import com.google.gerrit.extensions.restapi.ResourceNotFoundException;
import com.google.gerrit.extensions.restapi.RestView;
import com.google.gerrit.server.config.ConfigResource;
import com.google.gerrit.server.permissions.GlobalPermission;
import com.google.gerrit.server.permissions.PermissionBackend;
import com.google.gerrit.server.permissions.PermissionBackendException;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.Singleton;
@Singleton
class MetricsCollection implements ChildCollection<ConfigResource, MetricResource> {
private final DynamicMap<RestView<MetricResource>> views;
private final Provider<ListMetrics> list;
private final PermissionBackend permissionBackend;
private final DropWizardMetricMaker metrics;
@Inject
MetricsCollection(
DynamicMap<RestView<MetricResource>> views,
Provider<ListMetrics> list,
PermissionBackend permissionBackend,
DropWizardMetricMaker metrics) {
this.views = views;
this.list = list;
this.permissionBackend = permissionBackend;
this.metrics = metrics;
}
@Override
public DynamicMap<RestView<MetricResource>> views() {
return views;
}
@Override
public RestView<ConfigResource> list() {
return list.get();
}
@Override
public MetricResource parse(ConfigResource parent, IdString id)
throws ResourceNotFoundException, AuthException, PermissionBackendException {
permissionBackend.currentUser().check(GlobalPermission.VIEW_CACHES);
Metric metric = metrics.getMetric(id.get());
if (metric == null) {
throw new ResourceNotFoundException(id.get());
}
return new MetricResource(id.get(), metric);
}
}
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