package com.thinkbiganalytics.alerts.rest.controller;
import java.util.ArrayList;
import java.util.List;
import java.util.Optional;
import java.util.stream.Collectors;
import javax.inject.Inject;
import javax.inject.Named;
import javax.ws.rs.Consumes;
import javax.ws.rs.DefaultValue;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.QueryParam;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.core.Response.Status;
import javax.ws.rs.core.UriInfo;
import org.springframework.stereotype.Component;
/*-
* #%L
* thinkbig-alerts-controller
* %%
* Copyright (C) 2017 ThinkBig Analytics
* %%
* 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.
* #L%
*/
import com.thinkbiganalytics.Formatters;
import com.thinkbiganalytics.alerts.api.Alert;
import com.thinkbiganalytics.alerts.api.AlertChangeEvent;
import com.thinkbiganalytics.alerts.api.AlertCriteria;
import com.thinkbiganalytics.alerts.api.AlertProvider;
import com.thinkbiganalytics.alerts.api.AlertResponder;
import com.thinkbiganalytics.alerts.api.AlertResponse;
import com.thinkbiganalytics.alerts.rest.model.Alert.Level;
import com.thinkbiganalytics.alerts.rest.model.Alert.State;
import com.thinkbiganalytics.alerts.rest.model.AlertCreateRequest;
import com.thinkbiganalytics.alerts.rest.model.AlertRange;
import com.thinkbiganalytics.alerts.rest.model.AlertUpdateRequest;
import com.thinkbiganalytics.alerts.spi.AlertManager;
import com.thinkbiganalytics.jobrepo.security.OperationsAccessControl;
import com.thinkbiganalytics.rest.model.RestResponseStatus;
import com.thinkbiganalytics.security.AccessController;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiResponse;
import io.swagger.annotations.ApiResponses;
@Component
@Api(tags = "Operations Manager - Alerts", produces = "application/json")
@Path("/v1/alerts")
public class AlertsController {
@Inject
private AlertProvider provider;
@Inject
@Named("kyloAlertManager")
private AlertManager alertManager;
@Inject
private AccessController accessController;
@GET
@Produces(MediaType.APPLICATION_JSON)
@ApiOperation("Lists the current alerts.")
@ApiResponses(
@ApiResponse(code = 200, message = "Returns the alerts.", response = AlertRange.class)
)
public AlertRange getAlerts(@QueryParam("limit") Integer limit,
@QueryParam("state") String state,
@QueryParam("level") String level,
@QueryParam("before") String before,
@QueryParam("after") String after,
@QueryParam("cleared") @DefaultValue("false") String cleared) {
List<Alert> alerts = new ArrayList<>();
AlertCriteria criteria = createCriteria(limit, state, level, before, after, cleared);
provider.getAlerts(criteria).forEachRemaining(alerts::add);
return new AlertRange(alerts.stream().map(this::toModel).collect(Collectors.toList()));
}
@GET
@Path("{id}")
@Produces(MediaType.APPLICATION_JSON)
@ApiOperation("Gets the specified alert.")
@ApiResponses({
@ApiResponse(code = 200, message = "Returns the alert.", response = com.thinkbiganalytics.alerts.rest.model.Alert.class),
@ApiResponse(code = 404, message = "The alert could not be found.", response = RestResponseStatus.class)
})
public com.thinkbiganalytics.alerts.rest.model.Alert getAlert(@PathParam("id") String idStr) {
Alert.ID id = provider.resolve(idStr);
return provider.getAlert(id)
.map(this::toModel)
.orElseThrow(() -> new WebApplicationException("An alert with the given ID does not exists: " + idStr, Status.NOT_FOUND));
}
@POST
@Produces(MediaType.APPLICATION_JSON)
@Consumes(MediaType.APPLICATION_JSON)
@ApiOperation("Creates a new alert.")
@ApiResponses(
@ApiResponse(code = 200, message = "Returns the alert.", response = com.thinkbiganalytics.alerts.rest.model.Alert.class)
)
public com.thinkbiganalytics.alerts.rest.model.Alert createAlert(AlertCreateRequest req) {
this.accessController.checkPermission(AccessController.SERVICES, OperationsAccessControl.ADMIN_OPS);
Alert.Level level = toDomain(req.getLevel());
Alert alert = alertManager.create(req.getType(), level, req.getDescription(), null);
return toModel(alert);
}
@POST
@Path("{id}")
@Produces(MediaType.APPLICATION_JSON)
@Consumes(MediaType.APPLICATION_JSON)
@ApiOperation("Modifies the specified alert.")
@ApiResponses({
@ApiResponse(code = 200, message = "Returns the alert.", response = com.thinkbiganalytics.alerts.rest.model.Alert.class),
@ApiResponse(code = 400, message = "The alert could not be found.", response = RestResponseStatus.class)
})
public com.thinkbiganalytics.alerts.rest.model.Alert updateAlert(@PathParam("id") String idStr,
AlertUpdateRequest req) {
this.accessController.checkPermission(AccessController.SERVICES, OperationsAccessControl.ADMIN_OPS);
Alert.ID id = provider.resolve(idStr);
final Alert.State state = toDomain(req.getState());
class UpdateResponder implements AlertResponder {
private Alert result = null;
@Override
public void alertChange(Alert alert, AlertResponse response) {
result = alert;
switch (state) {
case HANDLED:
result = response.handle(req.getDescription());
break;
case IN_PROGRESS:
result = response.inProgress(req.getDescription());
break;
case UNHANDLED:
result = response.unhandle(req.getDescription());
break;
default:
break;
}
if (req.isClear()) {
response.clear();
}
}
}
UpdateResponder responder = new UpdateResponder();
provider.respondTo(id, responder);
return toModel(responder.result);
}
private com.thinkbiganalytics.alerts.rest.model.Alert toModel(Alert alert) {
com.thinkbiganalytics.alerts.rest.model.Alert result = new com.thinkbiganalytics.alerts.rest.model.Alert();
result.setId(alert.getId().toString());
result.setActionable(alert.isActionable());
result.setCreatedTime(alert.getCreatedTime());
result.setLevel(toModel(alert.getLevel()));
result.setState(toModel(alert.getState()));
result.setType(alert.getType());
result.setDescription(alert.getDescription());
result.setCleared(alert.isCleared());
alert.getEvents().forEach(e -> result.getEvents().add(toModel(e)));
return result;
}
private com.thinkbiganalytics.alerts.rest.model.AlertChangeEvent toModel(AlertChangeEvent event) {
com.thinkbiganalytics.alerts.rest.model.AlertChangeEvent result = new com.thinkbiganalytics.alerts.rest.model.AlertChangeEvent();
result.setCreatedTime(event.getChangeTime());
result.setDescription(event.getDescription());
result.setState(toModel(event.getState()));
result.setUser(event.getUser() != null ? event.getUser().getName() : null);
return result;
}
private Level toModel(Alert.Level level) {
// Currently identical
return Level.valueOf(level.name());
}
private State toModel(Alert.State state) {
// Currently identical
return State.valueOf(state.name());
}
private Alert.State toDomain(State state) {
return Alert.State.valueOf(state.name());
}
private Alert.Level toDomain(Level level) {
// Currently identical
return Alert.Level.valueOf(level.name());
}
private AlertCriteria createCriteria(Integer limit, String stateStr, String levelStr, String before, String after, String cleared) {
AlertCriteria criteria = provider.criteria();
if (limit != null) {
criteria.limit(limit);
}
if (stateStr != null) {
criteria.state(Alert.State.valueOf(stateStr.toUpperCase()));
}
if (levelStr != null) {
criteria.level(Alert.Level.valueOf(levelStr.toUpperCase()));
}
if (before != null) {
criteria.before(Formatters.parseDateTime(before));
}
if (after != null) {
criteria.after(Formatters.parseDateTime(after));
}
if (cleared != null) {
criteria.includedCleared(Boolean.parseBoolean(cleared));
}
return criteria;
}
private AlertCriteria createCriteria(UriInfo uriInfo) {
// Query params: limit, state, level, before-time, after-time, before-alert, after-alert
MultivaluedMap<String, String> params = uriInfo.getQueryParameters();
AlertCriteria criteria = provider.criteria();
try {
Optional.ofNullable(params.get("limit")).ifPresent(list -> list.forEach(limitStr -> criteria.limit(Integer.parseInt(limitStr))));
Optional.ofNullable(params.get("state")).ifPresent(list -> list.forEach(stateStr -> criteria.state(Alert.State.valueOf(stateStr.toUpperCase()))));
Optional.ofNullable(params.get("level")).ifPresent(list -> list.forEach(levelStr -> criteria.level(Alert.Level.valueOf(levelStr.toUpperCase()))));
Optional.ofNullable(params.get("before")).ifPresent(list -> list.forEach(timeStr -> criteria.before(Formatters.parseDateTime(timeStr))));
Optional.ofNullable(params.get("after")).ifPresent(list -> list.forEach(timeStr -> criteria.after(Formatters.parseDateTime(timeStr))));
return criteria;
} catch (IllegalArgumentException e) {
throw new WebApplicationException("Invalid query parameter: " + e.getMessage(), Status.BAD_REQUEST);
}
}
}