monasca-api/java/src/main/java/monasca/api/resource/MetricResource.java

113 lines
4.0 KiB
Java

/*
* Copyright (c) 2014 Hewlett-Packard Development Company, L.P.
*
* 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 monasca.api.resource;
import com.google.common.base.Splitter;
import com.google.common.base.Strings;
import com.codahale.metrics.annotation.Timed;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import javax.inject.Inject;
import javax.validation.Valid;
import javax.ws.rs.Consumes;
import javax.ws.rs.GET;
import javax.ws.rs.HeaderParam;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.QueryParam;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.UriInfo;
import monasca.api.app.MetricService;
import monasca.api.app.command.CreateMetricCommand;
import monasca.api.app.validation.Validation;
import monasca.api.domain.model.metric.MetricDefinitionRepository;
import monasca.api.resource.exception.Exceptions;
import monasca.common.model.Services;
import monasca.common.model.metric.Metric;
import monasca.common.model.metric.MetricDefinition;
/**
* Metric resource implementation.
*/
@Path("/v2.0/metrics")
public class MetricResource {
private static final String MONITORING_DELEGATE_ROLE = "monitoring-delegate";
private static final Splitter COMMA_SPLITTER = Splitter.on(',').omitEmptyStrings().trimResults();
private final MetricService service;
private final MetricDefinitionRepository metricRepo;
@Inject
public MetricResource(MetricService service, MetricDefinitionRepository metricRepo) {
this.service = service;
this.metricRepo = metricRepo;
}
@POST
@Timed
@Consumes(MediaType.APPLICATION_JSON)
public void create(@Context UriInfo uriInfo, @HeaderParam("X-Tenant-Id") String tenantId,
@HeaderParam("X-Roles") String roles,
@QueryParam("tenant_id") String crossTenantId,
@Valid CreateMetricCommand[] commands) {
boolean
isDelegate =
!Strings.isNullOrEmpty(roles) && COMMA_SPLITTER.splitToList(roles)
.contains(MONITORING_DELEGATE_ROLE);
List<Metric> metrics = new ArrayList<>(commands.length);
for (CreateMetricCommand command : commands) {
if (!isDelegate) {
if (command.dimensions != null) {
String service = command.dimensions.get(Services.SERVICE_DIMENSION);
if (service != null && Services.isReserved(service)) {
throw Exceptions
.forbidden("Project %s cannot POST metrics for the hpcs service", tenantId);
}
}
if (!Strings.isNullOrEmpty(crossTenantId)) {
throw Exceptions.forbidden("Project %s cannot POST cross tenant metrics", tenantId);
}
}
command.validate();
metrics.add(command.toMetric());
}
service.create(metrics, tenantId, crossTenantId);
}
@GET
@Timed
@Produces(MediaType.APPLICATION_JSON)
public Object getMetrics(@Context UriInfo uriInfo,
@HeaderParam("X-Tenant-Id") String tenantId,
@QueryParam("name") String name,
@QueryParam("dimensions") String dimensionsStr,
@QueryParam("offset") String offset) throws Exception {
Map<String, String>
dimensions =
Strings.isNullOrEmpty(dimensionsStr) ? null : Validation
.parseAndValidateNameAndDimensions(name, dimensionsStr);
return Links.paginate(offset, metricRepo.find(tenantId, name, dimensions, offset), uriInfo);
}
}