mirror of
https://github.com/ClickHouse/ClickHouse.git
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200 lines
6.4 KiB
C++
200 lines
6.4 KiB
C++
#pragma once
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#include <Common/ZooKeeper/KeeperException.h>
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#include <Common/ZooKeeper/ZooKeeper.h>
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#include <Common/ZooKeeper/ZooKeeperImpl.h>
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#include <Common/ZooKeeper/ZooKeeperCommon.h>
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#include <functional>
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#include <optional>
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#include <pcg-random/pcg_random.hpp>
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#include <Poco/Util/AbstractConfiguration.h>
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#include <Common/randomSeed.h>
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struct NumberGetter
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{
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static NumberGetter fromConfig(const std::string & key, const Poco::Util::AbstractConfiguration & config, std::optional<uint64_t> default_value = std::nullopt);
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uint64_t getNumber() const;
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std::string description() const;
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private:
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struct NumberRange
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{
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uint64_t min_value;
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uint64_t max_value;
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};
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std::variant<uint64_t, NumberRange> value;
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};
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struct StringGetter
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{
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explicit StringGetter(NumberGetter number_getter)
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: value(std::move(number_getter))
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{}
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StringGetter() = default;
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static StringGetter fromConfig(const std::string & key, const Poco::Util::AbstractConfiguration & config);
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void setString(std::string name);
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std::string getString() const;
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std::string description() const;
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bool isRandom() const;
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private:
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std::variant<std::string, NumberGetter> value;
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};
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struct PathGetter
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{
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static PathGetter fromConfig(const std::string & key, const Poco::Util::AbstractConfiguration & config);
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std::string getPath() const;
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std::string description() const;
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void initialize(Coordination::ZooKeeper & zookeeper);
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private:
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std::vector<std::string> parent_paths;
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bool initialized = false;
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std::vector<std::string> paths;
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mutable std::uniform_int_distribution<size_t> path_picker;
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};
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struct RequestGenerator
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{
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virtual ~RequestGenerator() = default;
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void getFromConfig(const std::string & key, const Poco::Util::AbstractConfiguration & config);
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Coordination::ZooKeeperRequestPtr generate(const Coordination::ACLs & acls);
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std::string description();
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void startup(Coordination::ZooKeeper & zookeeper);
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size_t getWeight() const;
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private:
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virtual void getFromConfigImpl(const std::string & key, const Poco::Util::AbstractConfiguration & config) = 0;
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virtual std::string descriptionImpl() = 0;
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virtual Coordination::ZooKeeperRequestPtr generateImpl(const Coordination::ACLs & acls) = 0;
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virtual void startupImpl(Coordination::ZooKeeper &) {}
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size_t weight = 1;
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};
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using RequestGeneratorPtr = std::shared_ptr<RequestGenerator>;
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struct CreateRequestGenerator final : public RequestGenerator
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{
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CreateRequestGenerator();
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private:
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void getFromConfigImpl(const std::string & key, const Poco::Util::AbstractConfiguration & config) override;
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std::string descriptionImpl() override;
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Coordination::ZooKeeperRequestPtr generateImpl(const Coordination::ACLs & acls) override;
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void startupImpl(Coordination::ZooKeeper & zookeeper) override;
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PathGetter parent_path;
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StringGetter name;
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std::optional<StringGetter> data;
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std::optional<double> remove_factor;
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pcg64 rng;
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std::uniform_real_distribution<double> remove_picker;
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std::unordered_set<std::string> paths_created;
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};
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struct SetRequestGenerator final : public RequestGenerator
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{
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private:
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void getFromConfigImpl(const std::string & key, const Poco::Util::AbstractConfiguration & config) override;
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std::string descriptionImpl() override;
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Coordination::ZooKeeperRequestPtr generateImpl(const Coordination::ACLs & acls) override;
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void startupImpl(Coordination::ZooKeeper & zookeeper) override;
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PathGetter path;
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StringGetter data;
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};
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struct GetRequestGenerator final : public RequestGenerator
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{
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private:
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void getFromConfigImpl(const std::string & key, const Poco::Util::AbstractConfiguration & config) override;
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std::string descriptionImpl() override;
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Coordination::ZooKeeperRequestPtr generateImpl(const Coordination::ACLs & acls) override;
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void startupImpl(Coordination::ZooKeeper & zookeeper) override;
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PathGetter path;
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};
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struct ListRequestGenerator final : public RequestGenerator
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{
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private:
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void getFromConfigImpl(const std::string & key, const Poco::Util::AbstractConfiguration & config) override;
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std::string descriptionImpl() override;
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Coordination::ZooKeeperRequestPtr generateImpl(const Coordination::ACLs & acls) override;
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void startupImpl(Coordination::ZooKeeper & zookeeper) override;
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PathGetter path;
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};
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struct RequestGetter
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{
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explicit RequestGetter(std::vector<RequestGeneratorPtr> request_generators_);
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RequestGetter() = default;
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static RequestGetter fromConfig(const std::string & key, const Poco::Util::AbstractConfiguration & config, bool for_multi = false);
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RequestGeneratorPtr getRequestGenerator() const;
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std::string description() const;
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void startup(Coordination::ZooKeeper & zookeeper);
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const std::vector<RequestGeneratorPtr> & requestGenerators() const;
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private:
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std::vector<RequestGeneratorPtr> request_generators;
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std::vector<size_t> weights;
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mutable std::uniform_int_distribution<size_t> request_generator_picker;
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};
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struct MultiRequestGenerator final : public RequestGenerator
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{
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private:
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void getFromConfigImpl(const std::string & key, const Poco::Util::AbstractConfiguration & config) override;
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std::string descriptionImpl() override;
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Coordination::ZooKeeperRequestPtr generateImpl(const Coordination::ACLs & acls) override;
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void startupImpl(Coordination::ZooKeeper & zookeeper) override;
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std::optional<NumberGetter> size;
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RequestGetter request_getter;
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};
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class Generator
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{
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public:
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explicit Generator(const Poco::Util::AbstractConfiguration & config);
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void startup(Coordination::ZooKeeper & zookeeper);
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Coordination::ZooKeeperRequestPtr generate();
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void cleanup(Coordination::ZooKeeper & zookeeper);
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private:
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struct Node
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{
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StringGetter name;
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std::optional<StringGetter> data;
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std::vector<std::shared_ptr<Node>> children;
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size_t repeat_count = 0;
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std::shared_ptr<Node> clone() const;
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void createNode(Coordination::ZooKeeper & zookeeper, const std::string & parent_path, const Coordination::ACLs & acls) const;
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void dumpTree(int level = 0) const;
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};
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static std::shared_ptr<Node> parseNode(const std::string & key, const Poco::Util::AbstractConfiguration & config);
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std::uniform_int_distribution<size_t> request_picker;
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std::vector<std::shared_ptr<Node>> root_nodes;
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RequestGetter request_getter;
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Coordination::ACLs default_acls;
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};
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std::optional<Generator> getGenerator(const std::string & name);
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