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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <vespa/config/subscription/configsubscription.h>
#include "iconfigmanager.h"
#include "sourcefactory.h"
#include <map>
#include <mutex>
namespace config {
class SourceSpec;
struct TimingValues;
/**
* An instance of this class represents a manager for config subscriptions, that use a common Source.
* Getting and/or creating a new instance is done by calling the factory method getInstance(Source).
*
* The manager holds a reference to each subscription.
*/
class ConfigManager : public IConfigManager
{
public:
ConfigManager(std::unique_ptr<SourceFactory> sourceFactory, int64_t initialGeneration);
~ConfigManager() override;
ConfigSubscription::SP subscribe(const ConfigKey & key, vespalib::duration timeout) override;
void unsubscribe(const ConfigSubscription & subscription) override;
void reload(int64_t generation) override;
private:
std::atomic<SubscriptionId> _idGenerator;
std::unique_ptr<SourceFactory> _sourceFactory;
int64_t _generation;
using SubscriptionMap = std::map<SubscriptionId, ConfigSubscription::SP>;
SubscriptionMap _subscriptionMap;
std::mutex _lock;
};
} // namespace config
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