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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.clustercontroller.core.testutils;
import java.util.logging.Level;
import com.yahoo.vdslib.state.ClusterState;
import com.yahoo.vdslib.state.Node;
import com.yahoo.vespa.clustercontroller.core.DummyVdsNode;
import com.yahoo.vespa.clustercontroller.core.FleetController;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import java.util.Set;
import java.util.logging.Logger;
public interface Waiter {
interface DataRetriever {
Object getMonitor();
FleetController getFleetController();
List<DummyVdsNode> getDummyNodes();
int getTimeoutMS();
}
ClusterState waitForState(String state) throws Exception;
ClusterState waitForStateInSpace(String space, String state) throws Exception;
ClusterState waitForStateInAllSpaces(String state) throws Exception;
ClusterState waitForState(String state, int timeoutMS) throws Exception;
ClusterState waitForStableSystem() throws Exception;
ClusterState waitForStableSystem(int nodeCount) throws Exception;
ClusterState waitForInitProgressPassed(Node n, double progress);
ClusterState waitForClusterStateIncludingNodesWithMinUsedBits(int bitcount, int nodecount);
void wait(WaitCondition c, WaitTask wt, int timeoutMS);
class Impl implements Waiter {
private static final Logger log = Logger.getLogger(Impl.class.getName());
private final DataRetriever data;
public Impl(DataRetriever data) {
this.data = data;
}
// TODO refactor
private ClusterState waitForState(String state, int timeoutMS, boolean checkAllSpaces, Set<String> checkSpaces) {
LinkedList<DummyVdsNode> nodesToCheck = new LinkedList<>();
for(DummyVdsNode node : data.getDummyNodes()) {
if (node.isConnected()) nodesToCheck.add(node);
}
WaitCondition.StateWait swc = new WaitCondition.RegexStateMatcher(
state, data.getFleetController(), data.getMonitor())
.includeNotifyingNodes(nodesToCheck)
.checkAllSpaces(checkAllSpaces)
.checkSpaceSubset(checkSpaces);
wait(swc, new WaitTask.StateResender(data.getFleetController()), timeoutMS);
return swc.getCurrentState();
}
public ClusterState waitForState(String state) {
return waitForState(state, data.getTimeoutMS());
}
public ClusterState waitForStateInAllSpaces(String state) {
return waitForState(state, data.getTimeoutMS(), true, Collections.emptySet());
}
public ClusterState waitForStateInSpace(String space, String state) {
return waitForState(state, data.getTimeoutMS(), false, Collections.singleton(space));
}
public ClusterState waitForState(String state, int timeoutMS) {
return waitForState(state, timeoutMS, false, Collections.emptySet());
}
public ClusterState waitForStableSystem() {
return waitForStableSystem(data.getDummyNodes().size() / 2);
}
public ClusterState waitForStableSystem(int nodeCount) {
WaitCondition.StateWait swc = new WaitCondition.RegexStateMatcher("version:\\d+ distributor:"+nodeCount+" storage:"+nodeCount, data.getFleetController(), data.getMonitor()).includeNotifyingNodes(data.getDummyNodes());
wait(swc, new WaitTask.StateResender(data.getFleetController()), data.getTimeoutMS());
return swc.getCurrentState();
}
public ClusterState waitForInitProgressPassed(Node n, double progress) {
WaitCondition.StateWait swc = new WaitCondition.InitProgressPassedMatcher(n, progress, data.getFleetController(), data.getMonitor());
wait(swc, new WaitTask.StateResender(data.getFleetController()), data.getTimeoutMS());
return swc.getCurrentState();
}
public ClusterState waitForClusterStateIncludingNodesWithMinUsedBits(int bitcount, int nodecount) {
WaitCondition.StateWait swc = new WaitCondition.MinUsedBitsMatcher(bitcount, nodecount, data.getFleetController(), data.getMonitor());
wait(swc, new WaitTask.StateResender(data.getFleetController()), data.getTimeoutMS());
return swc.getCurrentState();
}
public final void wait(WaitCondition c, WaitTask wt, int timeoutMS) {
log.log(LogLevel.INFO, "Waiting for " + c + (wt == null ? "" : " with wait task " + wt));
final long startTime = System.currentTimeMillis();
final long endTime = startTime + timeoutMS;
String lastReason = null;
while (true) {
synchronized (data.getMonitor()) {
String reason = c.isConditionMet();
if (reason == null) {
log.log(LogLevel.INFO, "Condition met. Returning");
return;
}
if (lastReason == null || !lastReason.equals(reason)) {
log.log(LogLevel.INFO, "Wait condition not met: " + reason);
lastReason = reason;
}
try {
boolean allowWait = true;
if (wt != null) {
if (wt.performWaitTask()) {
data.getMonitor().notifyAll();
allowWait = false;
}
}
final long timeLeft = endTime - System.currentTimeMillis();
if (timeLeft <= 0) {
throw new IllegalStateException("Timed out waiting max " + timeoutMS + " ms for " + c + (wt == null ? "" : "\n with wait task " + wt) + ",\n reason: " + reason);
}
if (allowWait) data.getMonitor().wait(wt == null ? WaitTask.defaultTaskFrequencyMillis : Math.min(wt.getWaitTaskFrequencyInMillis(), timeLeft));
} catch (InterruptedException e) {
}
}
}
}
}
}
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