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#pragma once
#include <Poco/Redis/Redis.h>
#include <Storages/IStorage.h>
#include <Storages/RedisCommon.h>
#include <Interpreters/IKeyValueEntity.h>
#include <Interpreters/Context_fwd.h>
#include <Storages/MutationCommands.h>
namespace DB
{
/* Implements storage in the Redis.
* Use ENGINE = Redis(host:port[, db_index[, password[, pool_size]]]) PRIMARY KEY(key);
*/
class StorageRedis : public IStorage, public IKeyValueEntity, WithContext
{
public:
StorageRedis(
const StorageID & table_id_,
const RedisConfiguration & configuration_,
ContextPtr context_,
const StorageInMemoryMetadata & storage_metadata,
const String & primary_key_);
std::string getName() const override { return "Redis"; }
Pipe read(
const Names & column_names,
const StorageSnapshotPtr & storage_snapshot,
SelectQueryInfo & query_info,
ContextPtr context_,
QueryProcessingStage::Enum processed_stage,
size_t max_block_size,
size_t num_streams) override;
SinkToStoragePtr write(
const ASTPtr & query,
const StorageMetadataPtr & /*metadata_snapshot*/,
ContextPtr context,
bool /*async_insert*/) override;
void truncate(const ASTPtr &,
const StorageMetadataPtr & metadata_snapshot,
ContextPtr,
TableExclusiveLockHolder &) override;
void checkMutationIsPossible(const MutationCommands & commands, const Settings & settings) const override;
void mutate(const MutationCommands &, ContextPtr) override;
Names getPrimaryKey() const override { return {primary_key}; }
/// Return chunk with data for given serialized keys.
/// If out_null_map is passed, fill it with 1/0 depending on key was/wasn't found. Result chunk may contain default values.
/// If out_null_map is not passed. Not found rows excluded from result chunk.
Chunk getBySerializedKeys(
const std::vector<std::string> & keys,
PaddedPODArray<UInt8> * out_null_map) const;
Chunk getBySerializedKeys(
const RedisArray & keys,
PaddedPODArray<UInt8> * out_null_map) const;
std::pair<RedisIterator, RedisArray> scan(RedisIterator iterator, const String & pattern, uint64_t max_count);
RedisArray multiGet(const RedisArray & keys) const;
void multiSet(const RedisArray & data) const;
RedisInteger multiDelete(const RedisArray & keys) const;
Chunk getByKeys(const ColumnsWithTypeAndName & keys, PaddedPODArray<UInt8> & null_map, const Names &) const override;
Block getSampleBlock(const Names &) const override;
private:
StorageID table_id;
RedisConfiguration configuration;
Poco::Logger * log;
RedisPoolPtr pool;
const String primary_key;
};
}
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