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

175 lines
7.3 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 java.net.URI;
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.DELETE;
import javax.ws.rs.GET;
import javax.ws.rs.HeaderParam;
import javax.ws.rs.POST;
import javax.ws.rs.PUT;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
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.Response;
import javax.ws.rs.core.UriInfo;
import org.hibernate.validator.constraints.NotEmpty;
import com.codahale.metrics.annotation.Timed;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.google.common.base.Strings;
import monasca.api.app.AlarmDefinitionService;
import monasca.api.app.command.CreateAlarmDefinitionCommand;
import monasca.api.app.command.UpdateAlarmDefinitionCommand;
import monasca.api.app.validation.AlarmValidation;
import monasca.api.app.validation.Validation;
import com.hpcloud.mon.common.model.alarm.AlarmExpression;
import com.hpcloud.mon.common.model.alarm.AlarmState;
import monasca.api.domain.model.alarmdefinition.AlarmDefinition;
import monasca.api.domain.model.alarmdefinition.AlarmDefinitionRepository;
import monasca.api.resource.annotation.PATCH;
import com.wordnik.swagger.annotations.Api;
import com.wordnik.swagger.annotations.ApiOperation;
import com.wordnik.swagger.annotations.ApiParam;
import com.wordnik.swagger.annotations.ApiResponse;
import com.wordnik.swagger.annotations.ApiResponses;
/**
* Alarm definition resource implementation.
*/
@Path("/v2.0/alarm-definitions")
@Api(value = "/v2.0/alarm-definitions",
description = "Operations for working with alarm definitions")
public class AlarmDefinitionResource {
private final AlarmDefinitionService service;
private final AlarmDefinitionRepository repo;
@Inject
public AlarmDefinitionResource(AlarmDefinitionService service, AlarmDefinitionRepository repo) {
this.service = service;
this.repo = repo;
}
@POST
@Timed
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
@ApiOperation(value = "Create alarm definition", response = AlarmDefinition.class)
public Response create(@Context UriInfo uriInfo, @HeaderParam("X-Tenant-Id") String tenantId,
@Valid CreateAlarmDefinitionCommand command) {
command.validate();
AlarmExpression alarmExpression = AlarmValidation.validateNormalizeAndGet(command.expression);
AlarmDefinition alarm =
Links.hydrate(service.create(tenantId, command.name, command.description, command.severity,
command.expression, alarmExpression, command.matchBy, command.alarmActions,
command.okActions, command.undeterminedActions), uriInfo, false);
return Response.created(URI.create(alarm.getId())).entity(alarm).build();
}
@GET
@Timed
@Produces(MediaType.APPLICATION_JSON)
@ApiOperation(value = "List alarm definitions", response = AlarmDefinition.class,
responseContainer = "List")
public List<AlarmDefinition> list(@Context UriInfo uriInfo,
@HeaderParam("X-Tenant-Id") String tenantId, @QueryParam("name") String name,
@QueryParam("dimensions") String dimensionsStr) {
Map<String, String> dimensions =
Strings.isNullOrEmpty(dimensionsStr) ? null : Validation
.parseAndValidateDimensions(dimensionsStr);
return Links.hydrate(repo.find(tenantId, name, dimensions), uriInfo);
}
@GET
@Timed
@Path("/{alarm_definition_id}")
@Produces(MediaType.APPLICATION_JSON)
@ApiOperation(value = "Get alarm definition", response = AlarmDefinition.class)
@ApiResponses(value = {@ApiResponse(code = 400, message = "Invalid ID supplied"),
@ApiResponse(code = 404, message = "Alarm definition not found")})
public AlarmDefinition get(
@ApiParam(value = "ID of alarm definition to fetch", required = true) @Context UriInfo uriInfo,
@HeaderParam("X-Tenant-Id") String tenantId,
@PathParam("alarm_definition_id") String alarmDefinitionId) {
return Links.hydrate(repo.findById(tenantId, alarmDefinitionId), uriInfo, true);
}
@PUT
@Timed
@Path("/{alarm_definition_id}")
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
@ApiOperation(value = "Update alarm definition", response = AlarmDefinition.class)
public AlarmDefinition update(@Context UriInfo uriInfo,
@HeaderParam("X-Tenant-Id") String tenantId,
@PathParam("alarm_definition_id") String alarmDefinitionId,
@Valid UpdateAlarmDefinitionCommand command) {
command.validate();
AlarmExpression alarmExpression = AlarmValidation.validateNormalizeAndGet(command.expression);
return Links.hydrate(service.update(tenantId, alarmDefinitionId, alarmExpression, command),
uriInfo, true);
}
@PATCH
@Timed
@Path("/{alarm_definition_id}")
@Consumes("application/json-patch+json")
@Produces(MediaType.APPLICATION_JSON)
@SuppressWarnings("unchecked")
public AlarmDefinition patch(@Context UriInfo uriInfo,
@HeaderParam("X-Tenant-Id") String tenantId,
@PathParam("alarm_definition_id") String alarmDefinitionId,
@NotEmpty Map<String, Object> fields) throws JsonMappingException {
String name = (String) fields.get("name");
String description = (String) fields.get("description");
String severity = (String) fields.get("severity");
String expression = (String) fields.get("expression");
List<String> matchBy = (List<String>) fields.get("match_by");
String stateStr = (String) fields.get("state");
AlarmState state =
stateStr == null ? null : Validation.parseAndValidate(AlarmState.class, stateStr);
Boolean enabled = (Boolean) fields.get("actions_enabled");
List<String> alarmActions = (List<String>) fields.get("alarm_actions");
List<String> okActions = (List<String>) fields.get("ok_actions");
List<String> undeterminedActions = (List<String>) fields.get("undetermined_actions");
AlarmValidation.validate(name, description, severity, alarmActions, okActions,
undeterminedActions);
AlarmExpression alarmExpression =
expression == null ? null : AlarmValidation.validateNormalizeAndGet(expression);
return Links.hydrate(service.patch(tenantId, alarmDefinitionId, name, description, severity,
expression, alarmExpression, matchBy, state, enabled, alarmActions, okActions,
undeterminedActions), uriInfo, true);
}
@DELETE
@Timed
@Path("/{alarm_definition_id}")
@ApiOperation(value = "Delete alarm definition")
public void delete(@HeaderParam("X-Tenant-Id") String tenantId,
@PathParam("alarm_definition_id") String alarmDefinitionId) {
service.delete(tenantId, alarmDefinitionId);
}
}