/**
* 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 com.seyren.api.bean;
import java.math.BigDecimal;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import javax.inject.Inject;
import javax.inject.Named;
import javax.ws.rs.PathParam;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import com.google.common.base.Predicate;
import com.google.common.collect.Collections2;
import com.seyren.api.jaxrs.SubscriptionsResource;
import com.seyren.core.domain.Alert;
import com.seyren.core.domain.AlertType;
import com.seyren.core.domain.Check;
import com.seyren.core.domain.Subscription;
import com.seyren.core.service.notification.NotificationService;
import com.seyren.core.store.ChecksStore;
import com.seyren.core.store.SubscriptionsStore;
import org.joda.time.DateTime;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@Named
public class SubscriptionsBean implements SubscriptionsResource {
private static final Logger LOGGER = LoggerFactory.getLogger(SubscriptionsBean.class);
private ChecksStore checksStore;
private SubscriptionsStore subscriptionsStore;
private final Iterable<NotificationService> notificationServices;
@Inject
public SubscriptionsBean(ChecksStore checksStore, SubscriptionsStore subscriptionsStore, List<NotificationService> notificationServices) {
this.checksStore = checksStore;
this.subscriptionsStore = subscriptionsStore;
this.notificationServices = notificationServices;
}
@Override
public Response createSubscription(String checkId, Subscription subscription) {
Subscription stored = subscriptionsStore.createSubscription(checkId, subscription);
return Response.created(uri(checkId, stored.getId())).build();
}
@Override
public Response updateSubscription(String checkId, Subscription subscription) {
subscriptionsStore.updateSubscription(checkId, subscription);
return Response.noContent().build();
}
@Override
public Response deleteSubscription(String checkId, String subscriptionId) {
subscriptionsStore.deleteSubscription(checkId, subscriptionId);
return Response.noContent().build();
}
@Override
public Response testSubscription(@PathParam("checkId") String checkId, @PathParam("subscriptionId") final String subscriptionId) {
Check check = checksStore.getCheck(checkId);
if (check == null) {
return Response.status(Response.Status.NOT_FOUND).build();
}
Collection<Subscription> subscriptions = Collections2.filter(check.getSubscriptions(), new Predicate<Subscription>() {
@Override
public boolean apply(Subscription subscription) {
return subscription.getId().equals(subscriptionId);
}
});
if (subscriptions.size() != 1) {
return Response.status(Response.Status.NOT_FOUND).build();
}
check.setState(AlertType.ERROR);
Subscription subscription = subscriptions.iterator().next();
List<Alert> interestingAlerts = new ArrayList<Alert>();
Alert alert = new Alert()
.withTarget(check.getTarget())
.withValue(BigDecimal.valueOf(0.0))
.withWarn(check.getWarn())
.withError(check.getError())
.withFromType(AlertType.OK)
.withToType(AlertType.ERROR)
.withTimestamp(new DateTime());
interestingAlerts.add(alert);
for (NotificationService notificationService : notificationServices) {
if (notificationService.canHandle(subscription.getType())) {
try {
notificationService.sendNotification(check, subscription, interestingAlerts);
} catch (Exception e) {
LOGGER.warn("Notifying {} by {} failed.", subscription.getTarget(), subscription.getType(), e);
return Response.status(Response.Status.INTERNAL_SERVER_ERROR)
.entity(String.format("Notifying failed '%s'", e.getMessage())).type(MediaType.TEXT_PLAIN).build();
}
}
}
return Response.noContent().build();
}
private URI uri(String checkId, String subscriptionId) {
try {
return new URI("checks/" + checkId + "/subscriptions/" + subscriptionId);
} catch (URISyntaxException e) {
throw new RuntimeException(e);
}
}
}