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60 lines
2.0 KiB
C++
60 lines
2.0 KiB
C++
#pragma once
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#include <Access/EnabledQuota.h>
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#include <ext/scope_guard.h>
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#include <memory>
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#include <mutex>
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#include <map>
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#include <unordered_map>
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namespace DB
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{
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class AccessControlManager;
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/// Stores information how much amount of resources have been consumed and how much are left.
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class QuotaCache
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{
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public:
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QuotaCache(const AccessControlManager & access_control_manager_);
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~QuotaCache();
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std::shared_ptr<const EnabledQuota> getEnabledQuota(const UUID & user_id, const String & user_name, const std::vector<UUID> & enabled_roles, const Poco::Net::IPAddress & address, const String & client_key);
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std::vector<QuotaUsageInfo> getUsageInfo() const;
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private:
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using Interval = EnabledQuota::Interval;
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using Intervals = EnabledQuota::Intervals;
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struct QuotaInfo
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{
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QuotaInfo(const QuotaPtr & quota_, const UUID & quota_id_) { setQuota(quota_, quota_id_); }
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void setQuota(const QuotaPtr & quota_, const UUID & quota_id_);
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String calculateKey(const EnabledQuota & enabled_quota) const;
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boost::shared_ptr<const Intervals> getOrBuildIntervals(const String & key);
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boost::shared_ptr<const Intervals> rebuildIntervals(const String & key);
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void rebuildAllIntervals();
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QuotaPtr quota;
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UUID quota_id;
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const ExtendedRoleSet * roles = nullptr;
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std::unordered_map<String /* quota key */, boost::shared_ptr<const Intervals>> key_to_intervals;
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};
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void ensureAllQuotasRead();
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void quotaAddedOrChanged(const UUID & quota_id, const std::shared_ptr<const Quota> & new_quota);
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void quotaRemoved(const UUID & quota_id);
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void chooseQuotaToConsume();
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void chooseQuotaToConsumeFor(EnabledQuota & enabled_quota);
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const AccessControlManager & access_control_manager;
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mutable std::mutex mutex;
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std::unordered_map<UUID /* quota id */, QuotaInfo> all_quotas;
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bool all_quotas_read = false;
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ext::scope_guard subscription;
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std::map<EnabledQuota::Params, std::weak_ptr<EnabledQuota>> enabled_quotas;
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};
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}
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