/**
* This file is part of Graylog2.
*
* Graylog2 is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Graylog2 is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Graylog2. If not, see <http://www.gnu.org/licenses/>.
*/
package org.graylog2.rest.resources.streams.alerts;
import com.codahale.metrics.annotation.Timed;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import org.apache.shiro.authz.annotation.RequiresAuthentication;
import org.graylog2.alerts.AbstractAlertCondition;
import org.graylog2.alerts.AlertService;
import org.graylog2.database.*;
import org.graylog2.plugin.alarms.AlertCondition;
import org.graylog2.plugin.streams.Stream;
import com.wordnik.swagger.annotations.*;
import org.graylog2.rest.resources.RestResource;
import org.graylog2.rest.resources.streams.alerts.requests.CreateConditionRequest;
import org.graylog2.security.RestPermissions;
import org.graylog2.streams.StreamService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.inject.Inject;
import javax.ws.rs.*;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import java.io.IOException;
import java.util.List;
import java.util.Map;
/**
* @author Dennis Oelkers <dennis@torch.sh>
*/
@RequiresAuthentication
@Api(value = "AlertConditions", description = "Manage stream alert conditions")
@Path("/streams/{streamId}/alerts/conditions")
public class StreamAlertConditionResource extends RestResource {
private static final Logger LOG = LoggerFactory.getLogger(StreamAlertConditionResource.class);
private final StreamService streamService;
private final AlertService alertService;
@Inject
public StreamAlertConditionResource(StreamService streamService, AlertService alertService) {
this.streamService = streamService;
this.alertService = alertService;
}
@POST
@Timed
@ApiOperation(value = "Create an alert condition")
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
@ApiResponses(value = {
@ApiResponse(code = 404, message = "Stream not found."),
@ApiResponse(code = 400, message = "Invalid ObjectId.")
})
public Response create(@ApiParam(name = "streamId", value = "The stream id this new alert condition belongs to.", required = true) @PathParam("streamId") String streamid,
@ApiParam(name = "JSON body", required = true) String body) {
CreateConditionRequest ccr;
checkPermission(RestPermissions.STREAMS_EDIT, streamid);
try {
ccr = objectMapper.readValue(body, CreateConditionRequest.class);
} catch(IOException e) {
LOG.error("Error while parsing JSON", e);
throw new WebApplicationException(e, Response.Status.BAD_REQUEST);
}
Stream stream;
try {
stream = streamService.load(streamid);
} catch (org.graylog2.database.NotFoundException e) {
throw new WebApplicationException(404);
}
final AlertCondition alertCondition;
try {
alertCondition = alertService.fromRequest(ccr, stream, getCurrentUser().getName());
} catch (AbstractAlertCondition.NoSuchAlertConditionTypeException e) {
LOG.error("Invalid alarm condition type.", e);
throw new WebApplicationException(e, Response.Status.BAD_REQUEST);
}
try {
streamService.addAlertCondition(stream, alertCondition);
} catch (ValidationException e) {
LOG.error("Validation error.", e);
throw new WebApplicationException(e, Response.Status.BAD_REQUEST);
}
Map<String, Object> result = Maps.newHashMap();
result.put("alert_condition_id", alertCondition.getId());
return Response.status(Response.Status.CREATED).entity(json(result)).build();
}
@PUT
@Timed
@Path("{conditionId}")
@ApiOperation(value = "Modify an alert condition")
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
@ApiResponses(value = {
@ApiResponse(code = 404, message = "Stream not found."),
@ApiResponse(code = 400, message = "Invalid ObjectId.")
})
public Response update(@ApiParam(name = "streamId", value = "The stream id the alert condition belongs to.", required = true) @PathParam("streamId") String streamid,
@ApiParam(name = "conditionId", value = "The alert condition id.", required = true) @PathParam("conditionId") String conditionid,
@ApiParam(name = "JSON body", required = true) String body) {
CreateConditionRequest ccr;
checkPermission(RestPermissions.STREAMS_EDIT, streamid);
try {
ccr = objectMapper.readValue(body, CreateConditionRequest.class);
} catch(IOException e) {
LOG.error("Error while parsing JSON", e);
throw new WebApplicationException(e, Response.Status.BAD_REQUEST);
}
Stream stream;
AlertCondition alertCondition;
try {
stream = streamService.load(streamid);
alertCondition = streamService.getAlertCondition(stream, conditionid);
alertCondition = alertService.updateFromRequest(alertCondition, ccr);
} catch (org.graylog2.database.NotFoundException e) {
throw new WebApplicationException(404);
} catch (AbstractAlertCondition.NoSuchAlertConditionTypeException e) {
LOG.error("Invalid alarm condition type.", e);
throw new WebApplicationException(e, Response.Status.BAD_REQUEST);
}
try {
streamService.updateAlertCondition(stream, alertCondition);
} catch (ValidationException e) {
LOG.error("Validation error.", e);
throw new WebApplicationException(e, Response.Status.BAD_REQUEST);
}
return Response.status(Response.Status.NO_CONTENT).build();
}
@GET @Timed
@ApiOperation(value = "Get all alert conditions of this stream")
@Produces(MediaType.APPLICATION_JSON)
@ApiResponses(value = {
@ApiResponse(code = 404, message = "Stream not found."),
@ApiResponse(code = 400, message = "Invalid ObjectId.")
})
public Response list(@ApiParam(name = "streamId", value = "The stream id this new alert condition belongs to.", required = true) @PathParam("streamId") String streamid) {
checkPermission(RestPermissions.STREAMS_READ, streamid);
Stream stream;
try {
stream = streamService.load(streamid);
} catch (org.graylog2.database.NotFoundException e) {
throw new WebApplicationException(404);
}
List<Map<String, Object>> conditions = Lists.newArrayList();
for (AlertCondition alertCondition : streamService.getAlertConditions(stream)) {
conditions.add(alertService.asMap(alertCondition));
}
Map<String, Object> result = Maps.newHashMap();
result.put("conditions", conditions);
result.put("total", conditions.size());
return Response.status(Response.Status.OK).entity(json(result)).build();
}
@DELETE @Timed
@Path("{conditionId}")
@ApiOperation(value = "Delete an alert condition")
@Produces(MediaType.APPLICATION_JSON)
@ApiResponses(value = {
@ApiResponse(code = 404, message = "Stream not found."),
@ApiResponse(code = 400, message = "Invalid ObjectId.")
})
public Response delete(@ApiParam(name = "streamId", value = "The stream id this new alert condition belongs to.", required = true) @PathParam("streamId") String streamid,
@ApiParam(name = "conditionId", value = "The stream id this new alert condition belongs to.", required = true) @PathParam("conditionId") String conditionId) {
checkPermission(RestPermissions.STREAMS_READ, streamid);
Stream stream;
try {
stream = streamService.load(streamid);
} catch (org.graylog2.database.NotFoundException e) {
throw new WebApplicationException(404);
}
streamService.removeAlertCondition(stream, conditionId);
return Response.status(Response.Status.NO_CONTENT).build();
}
}