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239 lines
7.1 KiB
C++
239 lines
7.1 KiB
C++
#include "Generator.h"
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#include <random>
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#include <filesystem>
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using namespace Coordination;
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using namespace zkutil;
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namespace DB
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{
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namespace ErrorCodes
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{
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extern const int LOGICAL_ERROR;
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}
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}
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namespace
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{
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std::string generateRandomString(size_t length)
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{
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if (length == 0)
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return "";
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static const auto & chars = "0123456789"
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"abcdefghijklmnopqrstuvwxyz"
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"ABCDEFGHIJKLMNOPQRSTUVWXYZ";
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static pcg64 rng(randomSeed());
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static std::uniform_int_distribution<size_t> pick(0, sizeof(chars) - 2);
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std::string s;
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s.reserve(length);
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while (length--)
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s += chars[pick(rng)];
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return s;
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}
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}
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std::string generateRandomPath(const std::string & prefix, size_t length)
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{
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return std::filesystem::path(prefix) / generateRandomString(length);
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}
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std::string generateRandomData(size_t size)
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{
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return generateRandomString(size);
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}
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void CreateRequestGenerator::startup(Coordination::ZooKeeper & zookeeper)
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{
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auto promise = std::make_shared<std::promise<void>>();
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auto future = promise->get_future();
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auto create_callback = [promise] (const CreateResponse & response)
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{
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if (response.error != Coordination::Error::ZOK)
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promise->set_exception(std::make_exception_ptr(zkutil::KeeperException(response.error)));
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else
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promise->set_value();
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};
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zookeeper.create(path_prefix, "", false, false, default_acls, create_callback);
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future.get();
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}
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ZooKeeperRequestPtr CreateRequestGenerator::generate()
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{
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auto request = std::make_shared<ZooKeeperCreateRequest>();
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request->acls = default_acls;
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size_t plength = 5;
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if (path_length)
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plength = *path_length;
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auto path_candidate = generateRandomPath(path_prefix, plength);
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while (paths_created.count(path_candidate))
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path_candidate = generateRandomPath(path_prefix, plength);
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paths_created.insert(path_candidate);
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request->path = path_candidate;
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if (data_size)
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request->data = generateRandomData(*data_size);
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return request;
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}
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void GetRequestGenerator::startup(Coordination::ZooKeeper & zookeeper)
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{
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auto promise = std::make_shared<std::promise<void>>();
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auto future = promise->get_future();
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auto create_callback = [promise] (const CreateResponse & response)
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{
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if (response.error != Coordination::Error::ZOK)
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promise->set_exception(std::make_exception_ptr(zkutil::KeeperException(response.error)));
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else
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promise->set_value();
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};
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zookeeper.create(path_prefix, "", false, false, default_acls, create_callback);
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future.get();
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size_t total_nodes = 1;
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if (num_nodes)
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total_nodes = *num_nodes;
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for (size_t i = 0; i < total_nodes; ++i)
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{
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auto path = generateRandomPath(path_prefix, 5);
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while (std::find(paths_to_get.begin(), paths_to_get.end(), path) != paths_to_get.end())
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path = generateRandomPath(path_prefix, 5);
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auto create_promise = std::make_shared<std::promise<void>>();
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auto create_future = create_promise->get_future();
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auto callback = [create_promise] (const CreateResponse & response)
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{
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if (response.error != Coordination::Error::ZOK)
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create_promise->set_exception(std::make_exception_ptr(zkutil::KeeperException(response.error)));
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else
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create_promise->set_value();
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};
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std::string data;
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if (nodes_data_size)
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data = generateRandomString(*nodes_data_size);
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zookeeper.create(path, data, false, false, default_acls, callback);
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create_future.get();
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paths_to_get.push_back(path);
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}
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}
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Coordination::ZooKeeperRequestPtr GetRequestGenerator::generate()
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{
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auto request = std::make_shared<ZooKeeperGetRequest>();
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size_t path_index = distribution(rng);
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request->path = paths_to_get[path_index];
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return request;
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}
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void ListRequestGenerator::startup(Coordination::ZooKeeper & zookeeper)
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{
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auto promise = std::make_shared<std::promise<void>>();
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auto future = promise->get_future();
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auto create_callback = [promise] (const CreateResponse & response)
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{
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if (response.error != Coordination::Error::ZOK)
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promise->set_exception(std::make_exception_ptr(zkutil::KeeperException(response.error)));
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else
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promise->set_value();
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};
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zookeeper.create(path_prefix, "", false, false, default_acls, create_callback);
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future.get();
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size_t total_nodes = 1;
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if (num_nodes)
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total_nodes = *num_nodes;
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size_t path_length = 5;
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if (paths_length)
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path_length = *paths_length;
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for (size_t i = 0; i < total_nodes; ++i)
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{
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auto path = generateRandomPath(path_prefix, path_length);
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auto create_promise = std::make_shared<std::promise<void>>();
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auto create_future = create_promise->get_future();
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auto callback = [create_promise] (const CreateResponse & response)
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{
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if (response.error != Coordination::Error::ZOK)
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create_promise->set_exception(std::make_exception_ptr(zkutil::KeeperException(response.error)));
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else
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create_promise->set_value();
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};
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zookeeper.create(path, "", false, false, default_acls, callback);
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create_future.get();
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}
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}
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Coordination::ZooKeeperRequestPtr ListRequestGenerator::generate()
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{
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auto request = std::make_shared<ZooKeeperListRequest>();
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request->path = path_prefix;
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return request;
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}
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std::unique_ptr<IGenerator> getGenerator(const std::string & name)
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{
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if (name == "create_no_data")
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{
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return std::make_unique<CreateRequestGenerator>();
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}
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else if (name == "create_small_data")
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{
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return std::make_unique<CreateRequestGenerator>("/create_generator", 5, 32);
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}
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else if (name == "create_medium_data")
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{
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return std::make_unique<CreateRequestGenerator>("/create_generator", 5, 1024);
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}
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else if (name == "create_big_data")
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{
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return std::make_unique<CreateRequestGenerator>("/create_generator", 5, 512 * 1024);
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}
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else if (name == "get_no_data")
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{
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return std::make_unique<GetRequestGenerator>("/get_generator", 10, 0);
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}
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else if (name == "get_small_data")
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{
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return std::make_unique<GetRequestGenerator>("/get_generator", 10, 32);
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}
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else if (name == "get_medium_data")
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{
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return std::make_unique<GetRequestGenerator>("/get_generator", 10, 1024);
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}
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else if (name == "get_big_data")
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{
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return std::make_unique<GetRequestGenerator>("/get_generator", 10, 512 * 1024);
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}
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else if (name == "list_no_nodes")
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{
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return std::make_unique<ListRequestGenerator>("/list_generator", 0, 1);
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}
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else if (name == "list_few_nodes")
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{
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return std::make_unique<ListRequestGenerator>("/list_generator", 10, 5);
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}
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else if (name == "list_medium_nodes")
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{
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return std::make_unique<ListRequestGenerator>("/list_generator", 1000, 5);
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}
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else if (name == "list_a_lot_nodes")
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{
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return std::make_unique<ListRequestGenerator>("/list_generator", 100000, 5);
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}
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throw DB::Exception(DB::ErrorCodes::LOGICAL_ERROR, "Unknown generator {}", name);
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}
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