ClickHouse/dbms/include/DB/Storages/MergeTree/ReplicatedMergeTreePartsExchange.h
2014-10-13 21:28:59 +04:00

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#pragma once
#include <DB/Interpreters/InterserverIOHandler.h>
#include <DB/Storages/MergeTree/MergeTreeData.h>
#include <DB/IO/ReadBufferFromHTTP.h>
#include <DB/IO/HashingWriteBuffer.h>
#include <DB/IO/copyData.h>
namespace DB
{
class StorageReplicatedMergeTree;
class ReplicatedMergeTreePartsServer : public InterserverIOEndpoint
{
public:
ReplicatedMergeTreePartsServer(MergeTreeData & data_, StorageReplicatedMergeTree & storage_) : data(data_),
storage(storage_), log(&Logger::get(data.getLogName() + " (Replicated PartsServer)")) {}
void processQuery(const Poco::Net::HTMLForm & params, WriteBuffer & out) override;
private:
MergeTreeData & data;
StorageReplicatedMergeTree & storage;
Logger * log;
MergeTreeData::DataPartPtr findPart(const String & name)
{
MergeTreeData::DataPartPtr part = data.getPartIfExists(name);
if (part)
return part;
throw Exception("No part " + name + " in table");
}
};
class ReplicatedMergeTreePartsFetcher
{
public:
ReplicatedMergeTreePartsFetcher(MergeTreeData & data_) : data(data_), log(&Logger::get("ReplicatedMergeTreePartsFetcher")) {}
/// Скачивает кусок в tmp_директорию. Если to_detached - скачивает в директорию detached.
MergeTreeData::MutableDataPartPtr fetchPart(
const String & part_name,
const String & replica_path,
const String & host,
int port,
bool to_detached = false);
private:
MergeTreeData & data;
Logger * log;
};
}