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/**
* This file is part of Graylog.
*
* Graylog 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.
*
* Graylog 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 Graylog. If not, see .
*/
package org.graylog2.rest.resources.alarmcallbacks;
import com.codahale.metrics.annotation.Timed;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import io.swagger.annotations.ApiResponse;
import io.swagger.annotations.ApiResponses;
import org.apache.shiro.authz.annotation.RequiresAuthentication;
import org.graylog2.alarmcallbacks.AlarmCallbackConfiguration;
import org.graylog2.alarmcallbacks.AlarmCallbackConfigurationAVImpl;
import org.graylog2.alarmcallbacks.AlarmCallbackConfigurationService;
import org.graylog2.alarmcallbacks.AlarmCallbackFactory;
import org.graylog2.audit.AuditEventTypes;
import org.graylog2.audit.jersey.AuditEvent;
import org.graylog2.database.NotFoundException;
import org.graylog2.plugin.alarms.callbacks.AlarmCallback;
import org.graylog2.plugin.configuration.ConfigurationRequest;
import org.graylog2.plugin.database.ValidationException;
import org.graylog2.plugin.streams.Stream;
import org.graylog2.rest.models.alarmcallbacks.AlarmCallbackListSummary;
import org.graylog2.rest.models.alarmcallbacks.AlarmCallbackSummary;
import org.graylog2.rest.models.alarmcallbacks.requests.CreateAlarmCallbackRequest;
import org.graylog2.rest.models.alarmcallbacks.responses.AvailableAlarmCallbackSummaryResponse;
import org.graylog2.rest.models.alarmcallbacks.responses.AvailableAlarmCallbacksResponse;
import org.graylog2.rest.models.alarmcallbacks.responses.CreateAlarmCallbackResponse;
import org.graylog2.shared.rest.resources.RestResource;
import org.graylog2.shared.security.RestPermissions;
import org.graylog2.streams.StreamService;
import org.graylog2.utilities.ConfigurationMapConverter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.inject.Inject;
import javax.ws.rs.BadRequestException;
import javax.ws.rs.Consumes;
import javax.ws.rs.DELETE;
import javax.ws.rs.GET;
import javax.ws.rs.InternalServerErrorException;
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.core.MediaType;
import javax.ws.rs.core.Response;
import java.net.URI;
import java.util.List;
import java.util.Map;
import java.util.Set;
@RequiresAuthentication
@Api(value = "AlarmCallbacks", description = "Manage stream alarm callbacks")
@Path("/streams/{streamid}/alarmcallbacks")
public class AlarmCallbackResource extends RestResource {
private static final Logger LOG = LoggerFactory.getLogger(AlarmCallbackResource.class);
private final AlarmCallbackConfigurationService alarmCallbackConfigurationService;
private final StreamService streamService;
private final Set availableAlarmCallbacks;
private final AlarmCallbackFactory alarmCallbackFactory;
@Inject
public AlarmCallbackResource(AlarmCallbackConfigurationService alarmCallbackConfigurationService,
StreamService streamService,
Set availableAlarmCallbacks,
AlarmCallbackFactory alarmCallbackFactory) {
this.alarmCallbackConfigurationService = alarmCallbackConfigurationService;
this.streamService = streamService;
this.availableAlarmCallbacks = availableAlarmCallbacks;
this.alarmCallbackFactory = alarmCallbackFactory;
}
// TODO: add permission checks
@GET
@Timed
@ApiOperation(value = "Get a list of all alarm callbacks for this stream")
@Produces(MediaType.APPLICATION_JSON)
public AlarmCallbackListSummary get(@ApiParam(name = "streamid", value = "The id of the stream whose alarm callbacks we want.", required = true)
@PathParam("streamid") String streamid) throws NotFoundException {
checkPermission(RestPermissions.STREAMS_READ, streamid);
final Stream stream = streamService.load(streamid);
final List alarmCallbacks = Lists.newArrayList();
for (AlarmCallbackConfiguration callback : alarmCallbackConfigurationService.getForStream(stream)) {
alarmCallbacks.add(AlarmCallbackSummary.create(
callback.getId(),
callback.getStreamId(),
callback.getType(),
callback.getConfiguration(),
callback.getCreatedAt(),
callback.getCreatorUserId()
));
}
return AlarmCallbackListSummary.create(alarmCallbacks);
}
@GET
@Path("/{alarmCallbackId}")
@Timed
@ApiOperation(value = "Get a single specified alarm callback for this stream")
@Produces(MediaType.APPLICATION_JSON)
public AlarmCallbackSummary get(@ApiParam(name = "streamid", value = "The id of the stream whose alarm callbacks we want.", required = true)
@PathParam("streamid") String streamid,
@ApiParam(name = "alarmCallbackId", value = "The alarm callback id we are getting", required = true)
@PathParam("alarmCallbackId") String alarmCallbackId) throws NotFoundException {
checkPermission(RestPermissions.STREAMS_READ, streamid);
final Stream stream = streamService.load(streamid);
final AlarmCallbackConfiguration result = alarmCallbackConfigurationService.load(alarmCallbackId);
if (result == null || !result.getStreamId().equals(stream.getId())) {
throw new javax.ws.rs.NotFoundException("Couldn't find alarm callback " + alarmCallbackId + " in for steam " + streamid);
}
return AlarmCallbackSummary.create(result.getId(), result.getStreamId(), result.getType(), result.getConfiguration(), result.getCreatedAt(), result.getCreatorUserId());
}
@POST
@Timed
@ApiOperation(value = "Create an alarm callback",
response = CreateAlarmCallbackResponse.class)
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
@AuditEvent(type = AuditEventTypes.ALARM_CALLBACK_CREATE)
public Response create(@ApiParam(name = "streamid", value = "The stream id this new alarm callback belongs to.", required = true)
@PathParam("streamid") String streamid,
@ApiParam(name = "JSON body", required = true) CreateAlarmCallbackRequest cr) throws NotFoundException {
checkPermission(RestPermissions.STREAMS_EDIT, streamid);
// make sure the values are correctly converted to the declared configuration types
cr.configuration = convertConfigurationValues(cr);
final AlarmCallbackConfiguration alarmCallbackConfiguration = alarmCallbackConfigurationService.create(streamid, cr, getCurrentUser().getName());
final String id;
try {
id = alarmCallbackConfigurationService.save(alarmCallbackConfiguration);
} catch (ValidationException e) {
LOG.error("Validation error.", e);
throw new BadRequestException(e);
}
final URI alarmCallbackUri = getUriBuilderToSelf().path(AlarmCallbackResource.class)
.path("{alarmCallbackId}")
.build(streamid, id);
return Response.created(alarmCallbackUri).entity(CreateAlarmCallbackResponse.create(id)).build();
}
@GET
@Path("/available")
@Timed
@ApiOperation(value = "Get a list of all alarm callback types")
@Produces(MediaType.APPLICATION_JSON)
public AvailableAlarmCallbacksResponse available(@ApiParam(name = "streamid", value = "The id of the stream whose alarm callbacks we want.", required = true)
@PathParam("streamid") String streamid) {
checkPermission(RestPermissions.STREAMS_READ, streamid);
final Map types = Maps.newHashMapWithExpectedSize(availableAlarmCallbacks.size());
for (AlarmCallback availableAlarmCallback : availableAlarmCallbacks) {
final AvailableAlarmCallbackSummaryResponse type = new AvailableAlarmCallbackSummaryResponse();
type.name = availableAlarmCallback.getName();
type.requested_configuration = availableAlarmCallback.getRequestedConfiguration().asList();
types.put(availableAlarmCallback.getClass().getCanonicalName(), type);
}
final AvailableAlarmCallbacksResponse response = new AvailableAlarmCallbacksResponse();
response.types = types;
return response;
}
@DELETE
@Path("/{alarmCallbackId}")
@Timed
@ApiOperation(value = "Delete an alarm callback")
@ApiResponses(value = {
@ApiResponse(code = 404, message = "Alarm callback not found."),
@ApiResponse(code = 400, message = "Invalid ObjectId.")
})
@AuditEvent(type = AuditEventTypes.ALARM_CALLBACK_DELETE)
public void delete(@ApiParam(name = "streamid", value = "The stream id this alarm callback belongs to.", required = true)
@PathParam("streamid") String streamid,
@ApiParam(name = "alarmCallbackId", required = true)
@PathParam("alarmCallbackId") String alarmCallbackId) throws NotFoundException {
checkPermission(RestPermissions.STREAMS_EDIT, streamid);
final Stream stream = streamService.load(streamid);
final AlarmCallbackConfiguration result = alarmCallbackConfigurationService.load(alarmCallbackId);
if (result == null || !result.getStreamId().equals(stream.getId())) {
throw new javax.ws.rs.NotFoundException("Couldn't find alarm callback " + alarmCallbackId + " in for steam " + streamid);
}
if (alarmCallbackConfigurationService.destroy(result) == 0) {
final String msg = "Couldn't remove alarm callback with ID " + result.getId();
LOG.error(msg);
throw new InternalServerErrorException(msg);
}
}
@PUT
@Path("/{alarmCallbackId}")
@Timed
@ApiOperation(value = "Update an alarm callback")
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
@AuditEvent(type = AuditEventTypes.ALARM_CALLBACK_UPDATE)
public void update(@ApiParam(name = "streamid", value = "The stream id this alarm callback belongs to.", required = true)
@PathParam("streamid") String streamid,
@ApiParam(name = "alarmCallbackId", required = true)
@PathParam("alarmCallbackId") String alarmCallbackId,
@ApiParam(name = "JSON body", required = true) CreateAlarmCallbackRequest alarmCallbackRequest) throws NotFoundException {
checkPermission(RestPermissions.STREAMS_EDIT, streamid);
final AlarmCallbackConfiguration aCC = alarmCallbackConfigurationService.load(alarmCallbackId);
if (aCC == null) {
throw new NotFoundException("Unable to find alarm callback configuration " + alarmCallbackId);
}
final Map configuration = convertConfigurationValues(alarmCallbackRequest);
final AlarmCallbackConfigurationAVImpl newConfig = AlarmCallbackConfigurationAVImpl.create(
alarmCallbackId,
aCC.getStreamId(),
aCC.getType(),
configuration,
aCC.getCreatedAt(),
aCC.getCreatorUserId());
try {
alarmCallbackConfigurationService.save(newConfig);
} catch (ValidationException e) {
throw new BadRequestException("Unable to save alarm callback configuration", e);
}
}
private Map convertConfigurationValues(final CreateAlarmCallbackRequest alarmCallbackRequest) {
final ConfigurationRequest requestedConfiguration;
try {
final AlarmCallback alarmCallback = alarmCallbackFactory.create(alarmCallbackRequest.type);
requestedConfiguration = alarmCallback.getRequestedConfiguration();
} catch (ClassNotFoundException e) {
throw new BadRequestException("Unable to load alarm callback of type " + alarmCallbackRequest.type, e);
}
// coerce the configuration to their correct types according to the alarmcallback's requested config
final Map configuration;
try {
configuration = ConfigurationMapConverter.convertValues(alarmCallbackRequest.configuration,
requestedConfiguration);
} catch (ValidationException e) {
throw new BadRequestException("Invalid configuration map", e);
}
return configuration;
}
}
