1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
|
// Copyright 2020 Oath Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.controller.maintenance;
import com.yahoo.config.provision.CloudName;
import com.yahoo.config.provision.NodeType;
import com.yahoo.config.provision.zone.ZoneApi;
import com.yahoo.vespa.hosted.controller.Controller;
import com.yahoo.vespa.hosted.controller.api.integration.aws.AwsEventFetcher;
import com.yahoo.vespa.hosted.controller.api.integration.aws.CloudEvent;
import com.yahoo.vespa.hosted.controller.api.integration.configserver.Node;
import com.yahoo.vespa.hosted.controller.api.integration.configserver.NodeRepository;
import com.yahoo.vespa.hosted.controller.api.integration.organization.Issue;
import com.yahoo.vespa.hosted.controller.api.integration.organization.IssueHandler;
import java.time.Duration;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.stream.Collectors;
/**
* Automatically fetches and handles scheduled events from AWS:
* 1. Deprovisions the affected hosts if applicable
* 2. Submits an issue detailing the event if some hosts are not processed by 1.
*
* @author mgimle
*/
public class CloudEventReporter extends ControllerMaintainer {
private static final Logger log = Logger.getLogger(CloudEventReporter.class.getName());
private final IssueHandler issueHandler;
private final AwsEventFetcher eventFetcher;
private final Map<String, List<ZoneApi>> zonesByCloudNativeRegion;
private final NodeRepository nodeRepository;
CloudEventReporter(Controller controller, Duration interval) {
super(controller, interval);
this.issueHandler = controller.serviceRegistry().issueHandler();
this.eventFetcher = controller.serviceRegistry().eventFetcherService();
this.nodeRepository = controller.serviceRegistry().configServer().nodeRepository();
this.zonesByCloudNativeRegion = getZonesByCloudNativeRegion();
}
@Override
protected boolean maintain() {
for (var awsRegion : zonesByCloudNativeRegion.keySet()) {
List<CloudEvent> events = eventFetcher.getEvents(awsRegion);
for (var event : events) {
log.info(String.format("Retrieved event %s, affecting the following instances: %s",
event.instanceEventId,
event.affectedInstances));
List<Node> needsManualIntervention = handleInstances(awsRegion, event);
if (!needsManualIntervention.isEmpty())
submitIssue(event);
}
}
return true;
}
/**
* Handles affected instances in the following way:
* 1. Ignore if unknown instance, presumably belongs to different system
* 2. Retire and deprovision if tenant host
* 3. Submit issue if infrastructure host, as it requires manual intervention
*/
private List<Node> handleInstances(String awsRegion, CloudEvent event) {
List<Node> needsManualIntervention = new ArrayList<>();
for (var zone : zonesByCloudNativeRegion.get(awsRegion)) {
for (var node : nodeRepository.list(zone.getId())) {
if (!isAffected(node, event)){
continue;
}
if (node.type() == NodeType.host) {
log.info(String.format("Setting host %s to wantToRetire and wantToDeprovision", node.hostname().value()));
nodeRepository.retireAndDeprovision(zone.getId(), node.hostname().value());
}
else {
needsManualIntervention.add(node);
}
}
}
return needsManualIntervention;
}
private void submitIssue(CloudEvent event) {
Issue issue = eventFetcher.createIssue(event);
if (!issueHandler.issueExists(issue)) {
issueHandler.file(issue);
log.log(Level.INFO, String.format("Filed an issue with the title '%s'", issue.summary()));
}
}
private boolean isAffected(Node node, CloudEvent event) {
return event.affectedInstances.stream()
.anyMatch(instance -> node.hostname().value().contains(instance));
}
private Map<String, List<ZoneApi>> getZonesByCloudNativeRegion() {
return controller().zoneRegistry().zones()
.ofCloud(CloudName.from("aws"))
.reachable()
.zones().stream()
.collect(Collectors.groupingBy(
ZoneApi::getCloudNativeRegionName
));
}
}
|
