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authorvitalyisaev <vitalyisaev@ydb.tech>2023-11-14 09:58:56 +0300
committervitalyisaev <vitalyisaev@ydb.tech>2023-11-14 10:20:20 +0300
commitc2b2dfd9827a400a8495e172a56343462e3ceb82 (patch)
treecd4e4f597d01bede4c82dffeb2d780d0a9046bd0 /contrib/clickhouse/src/Interpreters/InterserverIOHandler.h
parentd4ae8f119e67808cb0cf776ba6e0cf95296f2df7 (diff)
downloadydb-c2b2dfd9827a400a8495e172a56343462e3ceb82.tar.gz
YQ Connector: move tests from yql to ydb (OSS)
Перенос папки с тестами на Коннектор из папки yql в папку ydb (синхронизируется с github).
Diffstat (limited to 'contrib/clickhouse/src/Interpreters/InterserverIOHandler.h')
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1 files changed, 90 insertions, 0 deletions
diff --git a/contrib/clickhouse/src/Interpreters/InterserverIOHandler.h b/contrib/clickhouse/src/Interpreters/InterserverIOHandler.h
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+#pragma once
+
+#include <IO/ReadBuffer.h>
+#include <IO/WriteBuffer.h>
+#include <IO/ReadBufferFromString.h>
+#include <IO/ReadHelpers.h>
+#include <IO/WriteBufferFromString.h>
+#include <IO/WriteHelpers.h>
+#include <Common/ActionBlocker.h>
+#include <Common/SharedMutex.h>
+#include <base/types.h>
+
+#include <atomic>
+#include <map>
+#include <utility>
+
+namespace zkutil
+{
+ class ZooKeeper;
+ using ZooKeeperPtr = std::shared_ptr<ZooKeeper>;
+}
+
+namespace DB
+{
+
+namespace ErrorCodes
+{
+ extern const int DUPLICATE_INTERSERVER_IO_ENDPOINT;
+ extern const int NO_SUCH_INTERSERVER_IO_ENDPOINT;
+}
+
+class HTMLForm;
+class HTTPServerResponse;
+
+/** Query processor from other servers.
+ */
+class InterserverIOEndpoint
+{
+public:
+ virtual std::string getId(const std::string & path) const = 0;
+ virtual void processQuery(const HTMLForm & params, ReadBuffer & body, WriteBuffer & out, HTTPServerResponse & response) = 0;
+ virtual ~InterserverIOEndpoint() = default;
+
+ /// You need to stop the data transfer if blocker is activated.
+ ActionBlocker blocker;
+ SharedMutex rwlock;
+};
+
+using InterserverIOEndpointPtr = std::shared_ptr<InterserverIOEndpoint>;
+
+
+/** Here you can register a service that processes requests from other servers.
+ * Used to transfer chunks in ReplicatedMergeTree.
+ */
+class InterserverIOHandler
+{
+public:
+ void addEndpoint(const String & name, InterserverIOEndpointPtr endpoint)
+ {
+ std::lock_guard lock(mutex);
+ bool inserted = endpoint_map.try_emplace(name, std::move(endpoint)).second;
+ if (!inserted)
+ throw Exception(ErrorCodes::DUPLICATE_INTERSERVER_IO_ENDPOINT, "Duplicate interserver IO endpoint: {}", name);
+ }
+
+ bool removeEndpointIfExists(const String & name)
+ {
+ std::lock_guard lock(mutex);
+ return endpoint_map.erase(name);
+ }
+
+ InterserverIOEndpointPtr getEndpoint(const String & name) const
+ try
+ {
+ std::lock_guard lock(mutex);
+ return endpoint_map.at(name);
+ }
+ catch (...)
+ {
+ throw Exception(ErrorCodes::NO_SUCH_INTERSERVER_IO_ENDPOINT, "No interserver IO endpoint named {}", name);
+ }
+
+private:
+ using EndpointMap = std::map<String, InterserverIOEndpointPtr>;
+
+ EndpointMap endpoint_map;
+ mutable std::mutex mutex;
+};
+
+}