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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
/**
* \brief Interface to deduct what bucket copies to send load to.
*
* - Must handle inconsistent split buckets.
*/
#pragma once
#include <vespa/document/bucket/bucket.h>
#include <vespa/vdslib/state/node.h>
#include <vespa/vespalib/util/printable.h>
namespace storage::distributor {
class OperationTarget : public vespalib::AsciiPrintable
{
document::Bucket _bucket;
lib::Node _node;
bool _newCopy;
public:
OperationTarget() noexcept : _newCopy(true) {}
OperationTarget(const document::Bucket& bucket, const lib::Node& node, bool newCopy) noexcept
: _bucket(bucket), _node(node), _newCopy(newCopy) {}
document::BucketId getBucketId() const noexcept { return _bucket.getBucketId(); }
document::Bucket getBucket() const noexcept { return _bucket; }
const lib::Node& getNode() const noexcept { return _node; }
bool isNewCopy() const noexcept { return _newCopy; }
bool operator==(const OperationTarget& o) const noexcept {
return (_bucket == o._bucket && _node == o._node && _newCopy == o._newCopy);
}
bool operator!=(const OperationTarget& o) const noexcept {
return !(operator==(o));
}
void print(vespalib::asciistream& out, const PrintProperties&) const override;
};
class OperationTargetList : public std::vector<OperationTarget> {
public:
bool hasAnyNewCopies() const noexcept {
for (size_t i=0; i<size(); ++i) {
if (operator[](i).isNewCopy()) return true;
}
return false;
}
bool hasAnyExistingCopies() const noexcept {
for (size_t i=0; i<size(); ++i) {
if (!operator[](i).isNewCopy()) return true;
}
return false;
}
};
class OperationTargetResolver {
public:
virtual ~OperationTargetResolver() = default;
// Sadly all operations but put currently implement this by themselves.
enum OperationType {
PUT
};
virtual OperationTargetList getTargets(OperationType type, const document::BucketId& id) = 0;
};
}
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