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package org.dcache.resilience.data;
import com.google.common.collect.HashMultimap;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Multimap;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import diskCacheV111.poolManager.PoolSelectionUnit.SelectionPoolGroup;
import diskCacheV111.poolManager.StorageUnit;
import diskCacheV111.pools.PoolCostInfo;
import diskCacheV111.pools.PoolV2Mode;
import org.dcache.poolmanager.PoolMonitor;
/**
* <p>Container for recording changes to the internal maps based on
* a PoolMonitor update. Records pools, pool groups and storage units
* that have been added or removed, and modifications to the pool set of
* a pool group, to storage unit constraints, and to the tags, mode and
* cost for new or current pools.</p>
*
* <p>A note on the handling of pool cost: cost is always updated, but
* this is done during the compare phase (under read lock) for pools that
* are already present. Hence the cost map does not figure into the
* 'empty' diff condition.</p>
*
* @see PoolInfoMap#comparePoolInfo(PoolInfoDiff, Set, PoolMonitor)
*/
public final class PoolInfoDiff {
final Collection<String> newPools = new ArrayList<>();
final Collection<String> oldPools = new ArrayList<>();
final Collection<String> uninitPools = new ArrayList<>();
final Collection<SelectionPoolGroup> newGroups = new ArrayList<>();
final Collection<String> oldGroups = new ArrayList<>();
final Collection<StorageUnit> newUnits = new ArrayList<>();
final Collection<String> oldUnits = new ArrayList<>();
/*
* (pool, poolGroup)
*/
final Multimap<String, String> poolsAdded = HashMultimap.create();
/*
* (pool, poolGroup)
*/
final Multimap<String, String> poolsRmved = HashMultimap.create();
/*
* (pgroup, unit)
*/
final Multimap<String, String> unitsAdded = HashMultimap.create();
/*
* (pgroup, unit)
*/
final Multimap<String, String> unitsRmved = HashMultimap.create();
/*
* (unit, constraints)
*/
final Map<String, StorageUnitConstraints> constraints = new HashMap<>();
/*
* (pool, mode)
*/
private final Map<String, PoolV2Mode> modeChanged = new HashMap<>();
/*
* (pool, tags)
*/
private final Map<String, ImmutableMap<String, String>> tagsChanged
= new HashMap<>();
/*
* (pool, cost)
*/
final Map<String, PoolCostInfo> poolCost = new HashMap<>();
public Map<String, StorageUnitConstraints> getConstraints() {
return constraints;
}
public Map<String, PoolV2Mode> getModeChanged() {
return modeChanged;
}
public Collection<SelectionPoolGroup> getNewGroups() {
return newGroups;
}
public Collection<String> getNewPools() {
return newPools;
}
public Collection<StorageUnit> getNewUnits() {
return newUnits;
}
public Collection<String> getOldGroups() {
return oldGroups;
}
public Collection<String> getOldPools() {
return oldPools;
}
public Collection<String> getOldUnits() {
return oldUnits;
}
public Map<String, PoolCostInfo> getPoolCost() {
return poolCost;
}
public Multimap<String, String> getPoolsAddedToPoolGroup() {
return poolsAdded;
}
public Multimap<String, String> getPoolsRemovedFromPoolGroup() {
return poolsRmved;
}
public Map<String, ImmutableMap<String, String>> getTagsChanged() {
return tagsChanged;
}
public Collection<String> getUninitializedPools() {
return uninitPools;
}
public Multimap<String, String> getUnitsAddedToPoolGroup() {
return unitsAdded;
}
public Multimap<String, String> getUnitsRemovedFromPoolGroup() {
return unitsRmved;
}
public boolean isEmpty() {
return newPools.isEmpty() && oldPools.isEmpty() && uninitPools.isEmpty()
&& newGroups.isEmpty() && oldGroups.isEmpty()
&& newUnits.isEmpty() && oldUnits.isEmpty()
&& poolsAdded.isEmpty() && poolsRmved.isEmpty()
&& unitsAdded.isEmpty() && unitsRmved.isEmpty()
&& constraints.isEmpty() && tagsChanged.isEmpty()
&& modeChanged.isEmpty();
}
public String toString() {
return String.format("New Pools: %s\n" +
"Old Pools: %s\n" +
"Uninitialized Pools: %s\n" +
"New Groups: %s\n" +
"Old Groups: %s\n" +
"New Units: %s\n" +
"Old Units: %s\n" +
"Pools Added: %s\n" +
"Pools Removed: %s\n" +
"Units Added: %s\n" +
"Units Removed: %s\n" +
"Constraints changed: %s\n" +
"Mode changed: %s\n" +
"Tags changed: %s\n",
newPools, oldPools, uninitPools,
newGroups, oldGroups,
newUnits, oldUnits,
poolsAdded, poolsRmved,
unitsAdded, unitsRmved,
constraints, modeChanged,
tagsChanged);
}
}