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
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
|
// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.clustercontroller.core.rpc;
import com.yahoo.jrt.Supervisor;
import com.yahoo.jrt.Transport;
import com.yahoo.jrt.slobrok.api.Mirror;
import com.yahoo.jrt.slobrok.api.SlobrokList;
import com.yahoo.vdslib.state.Node;
import com.yahoo.vdslib.state.NodeType;
import com.yahoo.vespa.clustercontroller.core.ContentCluster;
import com.yahoo.vespa.clustercontroller.core.FleetControllerContext;
import com.yahoo.vespa.clustercontroller.core.NodeInfo;
import com.yahoo.vespa.clustercontroller.core.NodeLookup;
import com.yahoo.vespa.clustercontroller.core.Timer;
import com.yahoo.vespa.clustercontroller.core.listeners.SlobrokListener;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.StringTokenizer;
import java.util.TreeMap;
import java.util.logging.Level;
import java.util.logging.Logger;
public class SlobrokClient implements NodeLookup {
public static final Logger log = Logger.getLogger(SlobrokClient.class.getName());
private final FleetControllerContext context;
private final Timer timer;
private String[] connectionSpecs;
private Mirror mirror;
private Supervisor supervisor;
private boolean freshMirror = false;
public SlobrokClient(FleetControllerContext context, Timer timer, String[] connectionSpecs) {
this.context = context;
this.timer = timer;
this.connectionSpecs = connectionSpecs;
setup();
}
public boolean equalsExistingSpec(String[] spec) {
if (spec == null && connectionSpecs == null) return true;
if (spec == null) return false;
if (connectionSpecs == null) return false;
if (spec.length != connectionSpecs.length) return false;
for (int i = 0, n = spec.length; i < n; ++i) {
if (!spec[i].equals(connectionSpecs[i])) return false;
}
return true;
}
public void setSlobrokConnectionSpecs(String[] slobrokConnectionSpecs) {
if (equalsExistingSpec(slobrokConnectionSpecs)) return;
this.connectionSpecs = slobrokConnectionSpecs;
shutdown();
setup();
}
private void setup() {
supervisor = new Supervisor(new Transport("slobrok-client"));
supervisor.setDropEmptyBuffers(true);
SlobrokList slist = new SlobrokList();
slist.setup(connectionSpecs);
mirror = new Mirror(supervisor, slist);
freshMirror = true;
}
@Override
public void shutdown() {
if (supervisor != null) {
supervisor.transport().shutdown().join();
}
}
public Mirror getMirror() { return mirror; }
@Override
public boolean updateCluster(ContentCluster cluster, SlobrokListener listener) {
if (mirror == null) return false;
int mirrorVersion = mirror.updates();
if (freshMirror) {
freshMirror = false;
} else if (cluster.getSlobrokGenerationCount() == mirrorVersion) {
context.log(log, Level.FINEST, () -> "Slobrok still at generation count " + cluster.getSlobrokGenerationCount() + ". Not updating.");
return false;
}
cluster.setSlobrokGenerationCount(0); // Set to unused value until we are done processing info.
Map<Node, SlobrokData> distributorRpc = getSlobrokData(
"storage/cluster." + cluster.getName() + "/distributor/*");
Map<Node, SlobrokData> distributorMbus = getSlobrokData(
"storage/cluster." + cluster.getName() + "/distributor/*/default");
Map<Node, SlobrokData> storageRpc = getSlobrokData("storage/cluster." + cluster.getName() + "/storage/*");
Map<Node, SlobrokData> storageMbus = getSlobrokData(
"storage/cluster." + cluster.getName() + "/storage/*/default");
Map<Node, SlobrokData> slobrokNodes = new TreeMap<>();
for (SlobrokData data : distributorRpc.values()) {
if (distributorMbus.containsKey(data.node)) {
slobrokNodes.put(data.node, data);
}
}
for (SlobrokData data : storageRpc.values()) {
if (storageMbus.containsKey(data.node)) {
slobrokNodes.put(data.node, data);
}
}
List<SlobrokData> newNodes = new LinkedList<>();
List<NodeInfo> missingNodeInfos = new LinkedList<>();
List<SlobrokData> alteredRpcAddressNodes = new LinkedList<>();
List<NodeInfo> returningNodeInfos = new LinkedList<>();
detectNewAndMissingNodes(
cluster,
slobrokNodes,
newNodes,
missingNodeInfos,
alteredRpcAddressNodes,
returningNodeInfos);
for (SlobrokData data : newNodes) {
// XXX we really would like to cross-check the actual RPC address against what's configured,
// but this information does not seem to be available to the cluster controller currently.
NodeInfo nodeInfo = cluster.clusterInfo().getNodeInfo(data.node);
if (nodeInfo == null) continue; // slobrok may contain non-configured nodes during state transitions
cluster.clusterInfo().setRpcAddress(data.node, data.rpcAddress);
if (listener != null)
listener.handleNewNode(nodeInfo); // TODO: We'll never add new nodes here, move this to where clusterInfo.setNodes is called?
}
for (NodeInfo nodeInfo : missingNodeInfos) {
nodeInfo.markRpcAddressOutdated(timer);
if (listener != null)
listener.handleMissingNode(nodeInfo);
}
for (SlobrokData data : alteredRpcAddressNodes) {
// TODO: Abort the current node state requests? See NodeInfo.abortCurrentNodeStateRequests()
NodeInfo nodeInfo = cluster.clusterInfo().setRpcAddress(data.node, data.rpcAddress);
if (listener != null) {
listener.handleNewRpcAddress(nodeInfo); // TODO: We'll never add new nodes here, move this to where clusterInfo.setNodes is called?
}
}
for (NodeInfo nodeInfo : returningNodeInfos) {
nodeInfo.markRpcAddressLive();
nodeInfo.abortCurrentNodeStateRequests();
if (listener != null) {
listener.handleReturnedRpcAddress(nodeInfo);
}
}
cluster.setSlobrokGenerationCount(mirrorVersion);
for (NodeInfo nodeInfo : cluster.getNodeInfos()) {
if (slobrokNodes.containsKey(nodeInfo.getNode()) && nodeInfo.isNotInSlobrok()) {
context.log(log,
Level.WARNING,
"Node " + nodeInfo
+ " was tagged NOT in slobrok even though it is. It was in the following lists:"
+ (newNodes.contains(nodeInfo.getNode()) ? " newNodes" : "")
+ (missingNodeInfos.contains(nodeInfo) ? " missingNodes" : "")
+ (alteredRpcAddressNodes.contains(nodeInfo.getNode()) ? " alteredNodes" : "")
+ (returningNodeInfos.contains(nodeInfo) ? " returningNodes" : ""));
nodeInfo.markRpcAddressLive();
}
}
context.log(log, Level.FINEST, () -> "Slobrok information updated to generation " + cluster.getSlobrokGenerationCount());
return true;
}
private void detectNewAndMissingNodes(
ContentCluster oldCluster,
Map<Node, SlobrokData> slobrokNodes,
List<SlobrokData> newNodes,
List<NodeInfo> missingNodeInfos,
List<SlobrokData> alteredRpcAddress,
List<NodeInfo> returningRpcAddressNodeInfos)
{
Iterator<NodeInfo> oldIt = oldCluster.getNodeInfos().iterator();
Iterator<SlobrokData> newIt = slobrokNodes.values().iterator();
NodeInfo oldNext = null;
SlobrokData newNext = null;
while (true) {
if (oldNext == null && oldIt.hasNext()) { oldNext = oldIt.next(); }
if (newNext == null && newIt.hasNext()) { newNext = newIt.next(); }
if (oldNext == null && newNext == null) { break; }
if (oldNext == null || (newNext != null && oldNext.getNode().compareTo(newNext.node) > 0)) {
newNodes.add(newNext);
newNext = null;
} else if (newNext == null || newNext.node.compareTo(oldNext.getNode()) > 0) {
assert(slobrokNodes.get(oldNext.getNode()) == null);
if (oldNext.isInSlobrok() && oldNext.getRpcAddress() != null) {
missingNodeInfos.add(oldNext);
}
oldNext = null;
} else {
assert(newNext.rpcAddress != null);
if (oldNext.getRpcAddress() == null || !oldNext.getRpcAddress().equals(newNext.rpcAddress)) {
alteredRpcAddress.add(newNext);
} else if (oldNext.isNotInSlobrok()) {
returningRpcAddressNodeInfos.add(oldNext);
}
oldNext = null;
newNext = null;
}
}
}
private Map<Node, SlobrokData> getSlobrokData(String pattern) {
Map<Node, SlobrokData> result = new TreeMap<>();
List<Mirror.Entry> entries = mirror.lookup(pattern);
context.log(log, Level.FINEST, () -> "Looking for slobrok entries with pattern '" + pattern + "'. Found " + entries.size() + " entries.");
for (Mirror.Entry entry : entries) {
StringTokenizer st = new StringTokenizer(entry.getName(), "/");
String addressType = st.nextToken();
String cluster = st.nextToken(); // skip
NodeType nodeType = NodeType.get(st.nextToken());
Integer nodeIndex = Integer.valueOf(st.nextToken());
String service = (st.hasMoreTokens() ? st.nextToken() : ""); // skip
assert(addressType.equals("storage"));
Node n = new Node(nodeType, nodeIndex);
result.put(n, new SlobrokData(n, entry.getSpecString()));
}
return result;
}
private static class SlobrokData {
public Node node;
String rpcAddress;
SlobrokData(Node node, String rpcAddress) {
this.node = node;
this.rpcAddress = rpcAddress;
}
}
}
|
