/*
* Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*/
package org.opendaylight.controller.md.sal.dom.broker.impl;
import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableMap.Builder;
import com.google.common.collect.Maps;
import com.google.common.util.concurrent.CheckedFuture;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import org.opendaylight.controller.md.sal.dom.api.DOMRpcAvailabilityListener;
import org.opendaylight.controller.md.sal.dom.api.DOMRpcException;
import org.opendaylight.controller.md.sal.dom.api.DOMRpcImplementation;
import org.opendaylight.controller.md.sal.dom.api.DOMRpcResult;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
import org.opendaylight.yangtools.yang.model.api.SchemaPath;
abstract class AbstractDOMRpcRoutingTableEntry {
private final Map<YangInstanceIdentifier, List<DOMRpcImplementation>> impls;
private final SchemaPath schemaPath;
AbstractDOMRpcRoutingTableEntry(final SchemaPath schemaPath,
final Map<YangInstanceIdentifier, List<DOMRpcImplementation>> impls) {
this.schemaPath = Preconditions.checkNotNull(schemaPath);
this.impls = Preconditions.checkNotNull(impls);
}
final SchemaPath getSchemaPath() {
return schemaPath;
}
final List<DOMRpcImplementation> getImplementations(final YangInstanceIdentifier context) {
return impls.get(context);
}
final Map<YangInstanceIdentifier, List<DOMRpcImplementation>> getImplementations() {
return impls;
}
final boolean containsContext(final YangInstanceIdentifier contextReference) {
return impls.containsKey(contextReference);
}
final Set<YangInstanceIdentifier> registeredIdentifiers(final DOMRpcAvailabilityListener l) {
return Maps.filterValues(impls, list -> list.stream().anyMatch(l::acceptsImplementation)).keySet();
}
/**
*
* @param implementation
* @param newRpcs List of new RPCs, must be mutable
* @return
*/
final AbstractDOMRpcRoutingTableEntry add(final DOMRpcImplementation implementation,
final List<YangInstanceIdentifier> newRpcs) {
final Builder<YangInstanceIdentifier, List<DOMRpcImplementation>> vb = ImmutableMap.builder();
for (final Entry<YangInstanceIdentifier, List<DOMRpcImplementation>> ve : impls.entrySet()) {
if (newRpcs.remove(ve.getKey())) {
final List<DOMRpcImplementation> i = new ArrayList<>(ve.getValue().size() + 1);
i.addAll(ve.getValue());
i.add(implementation);
// New implementation is at the end, this will move it to be the last among implementations
// with equal cost -- relying on sort() being stable.
i.sort((a, b) -> Long.compare(a.invocationCost(), b.invocationCost()));
vb.put(ve.getKey(), i);
} else {
vb.put(ve);
}
}
for(final YangInstanceIdentifier ii : newRpcs) {
final List<DOMRpcImplementation> impl = new ArrayList<>(1);
impl.add(implementation);
vb.put(ii, impl);
}
return newInstance(vb.build());
}
final AbstractDOMRpcRoutingTableEntry remove(final DOMRpcImplementation implementation,
final List<YangInstanceIdentifier> removed) {
final Builder<YangInstanceIdentifier, List<DOMRpcImplementation>> vb = ImmutableMap.builder();
for (final Entry<YangInstanceIdentifier, List<DOMRpcImplementation>> ve : impls.entrySet()) {
if (removed.remove(ve.getKey())) {
final List<DOMRpcImplementation> i = new ArrayList<>(ve.getValue());
i.remove(implementation);
// We could trimToSize(), but that may perform another copy just to get rid
// of a single element. That is probably not worth the trouble.
if (!i.isEmpty()) {
vb.put(ve.getKey(), i);
}
} else {
vb.put(ve);
}
}
final Map<YangInstanceIdentifier, List<DOMRpcImplementation>> v = vb.build();
return v.isEmpty() ? null : newInstance(v);
}
protected abstract CheckedFuture<DOMRpcResult, DOMRpcException> invokeRpc(final NormalizedNode<?, ?> input);
protected abstract AbstractDOMRpcRoutingTableEntry newInstance(final Map<YangInstanceIdentifier, List<DOMRpcImplementation>> impls);
}