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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
/**
* @class VdsCluster
*
* Represents a VDS cluster.
*/
package com.yahoo.vespa.clustercontroller.core;
import com.yahoo.vdslib.distribution.ConfiguredNode;
import com.yahoo.vdslib.state.*;
import com.yahoo.vdslib.distribution.Distribution;
import com.yahoo.vdslib.distribution.Group;
import com.yahoo.vespa.clustercontroller.core.status.statuspage.VdsClusterHtmlRendrer;
import com.yahoo.vespa.clustercontroller.utils.staterestapi.requests.SetUnitStateRequest;
import java.util.*;
public class ContentCluster {
private final String clusterName;
private final ClusterInfo clusterInfo = new ClusterInfo();
private final Map<Node, Long> nodeStartTimestamps = new TreeMap<>();
private int slobrokGenerationCount = 0;
private int pollingFrequency = 5000;
private Distribution distribution;
private int minStorageNodesUp;
private double minRatioOfStorageNodesUp;
public ContentCluster(String clusterName, Collection<ConfiguredNode> configuredNodes, Distribution distribution,
int minStorageNodesUp, double minRatioOfStorageNodesUp) {
if (configuredNodes == null) throw new IllegalArgumentException("Nodes must be set");
this.clusterName = clusterName;
this.distribution = distribution;
this.minStorageNodesUp = minStorageNodesUp;
this.minRatioOfStorageNodesUp = minRatioOfStorageNodesUp;
setNodes(configuredNodes);
}
public void writeHtmlState(
final VdsClusterHtmlRendrer vdsClusterHtmlRendrer,
final StringBuilder sb,
final Timer timer,
final ClusterState state,
final Distribution distribution,
final FleetControllerOptions options,
final EventLog eventLog) {
final VdsClusterHtmlRendrer.Table table =
vdsClusterHtmlRendrer.createNewClusterHtmlTable(clusterName, slobrokGenerationCount);
final List<Group> groups = LeafGroups.enumerateFrom(distribution.getRootGroup());
for (int j=0; j<groups.size(); ++j) {
final Group group = groups.get(j);
assert(group != null);
final String localName = group.getUnixStylePath();
assert(localName != null);
final TreeMap<Integer, NodeInfo> storageNodeInfoByIndex = new TreeMap<>();
final TreeMap<Integer, NodeInfo> distributorNodeInfoByIndex = new TreeMap<>();
for (ConfiguredNode configuredNode : group.getNodes()) {
storeNodeInfo(configuredNode.index(), NodeType.STORAGE, storageNodeInfoByIndex);
storeNodeInfo(configuredNode.index(), NodeType.DISTRIBUTOR, distributorNodeInfoByIndex);
}
table.renderNodes(
storageNodeInfoByIndex,
distributorNodeInfoByIndex,
timer,
state,
options.maxPrematureCrashes,
eventLog,
clusterName,
localName);
}
table.addTable(sb, options.stableStateTimePeriod);
}
private void storeNodeInfo(int nodeIndex, NodeType nodeType, Map<Integer, NodeInfo> nodeInfoByIndex) {
NodeInfo nodeInfo = getNodeInfo(new Node(nodeType, nodeIndex));
if (nodeInfo == null) return;
nodeInfoByIndex.put(nodeIndex, nodeInfo);
}
public Distribution getDistribution() { return distribution; }
public void setDistribution(Distribution distribution) {
this.distribution = distribution;
for (NodeInfo info : clusterInfo.getAllNodeInfo()) {
info.setGroup(distribution);
}
}
/** Sets the configured nodes of this cluster */
public final void setNodes(Collection<ConfiguredNode> configuredNodes) {
clusterInfo.setNodes(configuredNodes, this, distribution);
}
public void setStartTimestamp(Node n, long startTimestamp) {
nodeStartTimestamps.put(n, startTimestamp);
}
public long getStartTimestamp(Node n) {
Long value = nodeStartTimestamps.get(n);
return (value == null ? 0 : value);
}
public Map<Node, Long> getStartTimestamps() {
return nodeStartTimestamps;
}
public void clearStates() {
for (NodeInfo info : clusterInfo.getAllNodeInfo()) {
info.setReportedState(null, 0);
}
}
public boolean allStatesReported() {
return clusterInfo.allStatesReported();
}
public int getPollingFrequency() { return pollingFrequency; }
public void setPollingFrequency(int millisecs) { pollingFrequency = millisecs; }
/** Returns the configured nodes of this as a read-only map indexed on node index (distribution key) */
public Map<Integer, ConfiguredNode> getConfiguredNodes() {
return clusterInfo.getConfiguredNodes();
}
public Collection<NodeInfo> getNodeInfo() {
return Collections.unmodifiableCollection(clusterInfo.getAllNodeInfo());
}
public ClusterInfo clusterInfo() { return clusterInfo; }
public String getName() { return clusterName; }
public NodeInfo getNodeInfo(Node node) { return clusterInfo.getNodeInfo(node); }
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("ContentCluster(").append(clusterName).append(") {");
for (NodeInfo node : clusterInfo.getAllNodeInfo()) {
sb.append("\n ").append(node);
}
sb.append("\n}");
return sb.toString();
}
public int getSlobrokGenerationCount() { return slobrokGenerationCount; }
public void setSlobrokGenerationCount(int count) { slobrokGenerationCount = count; }
private void getLeaves(Group node, List<Group> leaves, List<String> names, String name) {
if (node.isLeafGroup()) {
leaves.add(node);
names.add(name + "/" + node.getName());
return;
}
for (Group g : node.getSubgroups().values()) {
getLeaves(g, leaves, names, name + (node.getName() != null ? "/" + node.getName() : ""));
}
}
public StorageNodeStats getStorageNodeStats(int storageNodeIndex) {
LatencyStats aggregatePutLatencyStats = new LatencyStats();
StorageNodeStats aggregateStats = new StorageNodeStats(aggregatePutLatencyStats);
for (DistributorNodeInfo distributor : clusterInfo.getDistributorNodeInfo()) {
StorageNodeStats statsFromDistributor = distributor.getStorageNodeStatsOrNull(storageNodeIndex);
if (statsFromDistributor != null) {
aggregateStats.add(statsFromDistributor);
}
}
return aggregateStats;
}
/**
* Checks if a node can be upgraded
*
* @param node the node to be checked for upgrad
* @param clusterState the current cluster state version
* @param condition the upgrade condition
* @param newState state wanted to be set @return NodeUpgradePrechecker.Response
*/
public NodeStateChangeChecker.Result calculateEffectOfNewState(
Node node, ClusterState clusterState, SetUnitStateRequest.Condition condition, NodeState oldState, NodeState newState) {
NodeStateChangeChecker nodeStateChangeChecker = new NodeStateChangeChecker(
minStorageNodesUp,
minRatioOfStorageNodesUp,
distribution.getRedundancy(),
clusterInfo);
return nodeStateChangeChecker.evaluateTransition(node, clusterState, condition, oldState, newState);
}
public void setMinStorageNodesUp(int minStorageNodesUp) {
this.minStorageNodesUp = minStorageNodesUp;
}
public void setMinRatioOfStorageNodesUp(double minRatioOfStorageNodesUp) {
this.minRatioOfStorageNodesUp = minRatioOfStorageNodesUp;
}
public boolean hasConfiguredNode(int index) {
return clusterInfo.getConfiguredNodes().containsKey(index);
}
}
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