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#include "RedisDictionarySource.h"
#include "DictionarySourceFactory.h"
#include "DictionaryStructure.h"
#include "registerDictionaries.h"
#include <Poco/Util/AbstractConfiguration.h>
#include <Interpreters/Context.h>
#include <QueryPipeline/QueryPipeline.h>
#include <IO/WriteHelpers.h>
#include "RedisSource.h"
namespace DB
{
namespace ErrorCodes
{
extern const int UNSUPPORTED_METHOD;
extern const int INVALID_CONFIG_PARAMETER;
extern const int LOGICAL_ERROR;
}
void registerDictionarySourceRedis(DictionarySourceFactory & factory)
{
auto create_table_source = [=](const DictionaryStructure & dict_struct,
const Poco::Util::AbstractConfiguration & config,
const String & config_prefix,
Block & sample_block,
ContextPtr global_context,
const std::string & /* default_database */,
bool /* created_from_ddl */) -> DictionarySourcePtr {
auto redis_config_prefix = config_prefix + ".redis";
auto host = config.getString(redis_config_prefix + ".host");
auto port = config.getUInt(redis_config_prefix + ".port");
global_context->getRemoteHostFilter().checkHostAndPort(host, toString(port));
RedisConfiguration configuration =
{
.host = host,
.port = static_cast<UInt16>(port),
.db_index = config.getUInt(redis_config_prefix + ".db_index", DEFAULT_REDIS_DB_INDEX),
.password = config.getString(redis_config_prefix + ".password", DEFAULT_REDIS_PASSWORD),
.storage_type = parseStorageType(config.getString(redis_config_prefix + ".storage_type", "")),
.pool_size = config.getUInt(redis_config_prefix + ".pool_size", DEFAULT_REDIS_POOL_SIZE),
};
return std::make_unique<RedisDictionarySource>(dict_struct, configuration, sample_block);
};
factory.registerSource("redis", create_table_source);
}
RedisDictionarySource::RedisDictionarySource(
const DictionaryStructure & dict_struct_,
const RedisConfiguration & configuration_,
const Block & sample_block_)
: dict_struct{dict_struct_}
, configuration(configuration_)
, pool(std::make_shared<RedisPool>(configuration.pool_size))
, sample_block{sample_block_}
{
if (dict_struct.attributes.size() != 1)
throw Exception(ErrorCodes::INVALID_CONFIG_PARAMETER,
"Invalid number of non key columns for Redis source: {}, expected 1",
dict_struct.attributes.size());
if (configuration.storage_type == RedisStorageType::HASH_MAP)
{
if (!dict_struct.key)
throw Exception(ErrorCodes::INVALID_CONFIG_PARAMETER,
"Redis source with storage type \'hash_map\' must have key");
if (dict_struct.key->size() != 2)
throw Exception(ErrorCodes::INVALID_CONFIG_PARAMETER,
"Redis source with storage type \'hash_map\' requires 2 keys");
// suppose key[0] is primary key, key[1] is secondary key
for (const auto & key : *dict_struct.key)
if (!isInteger(key.type) && !isString(key.type))
throw Exception(ErrorCodes::INVALID_CONFIG_PARAMETER,
"Redis source supports only integer or string key, but key '{}' of type {} given",
key.name,
key.type->getName());
}
}
RedisDictionarySource::RedisDictionarySource(const RedisDictionarySource & other)
: RedisDictionarySource(other.dict_struct, other.configuration, other.sample_block)
{
}
RedisDictionarySource::~RedisDictionarySource() = default;
QueryPipeline RedisDictionarySource::loadAll()
{
auto connection = getRedisConnection(pool, configuration);
RedisCommand command_for_keys("KEYS");
command_for_keys << "*";
/// Get only keys for specified storage type.
auto all_keys = connection->client->execute<RedisArray>(command_for_keys);
if (all_keys.isNull())
return QueryPipeline(std::make_shared<RedisSource>(
std::move(connection), RedisArray{},
configuration.storage_type, sample_block, REDIS_MAX_BLOCK_SIZE));
RedisArray keys;
auto key_type = storageTypeToKeyType(configuration.storage_type);
for (auto && key : all_keys)
if (key_type == connection->client->execute<String>(RedisCommand("TYPE").addRedisType(key)))
keys.addRedisType(key);
if (configuration.storage_type == RedisStorageType::HASH_MAP)
{
keys = *getRedisHashMapKeys(connection, keys);
}
return QueryPipeline(std::make_shared<RedisSource>(
std::move(connection), std::move(keys),
configuration.storage_type, sample_block, REDIS_MAX_BLOCK_SIZE));
}
QueryPipeline RedisDictionarySource::loadIds(const std::vector<UInt64> & ids)
{
auto connection = getRedisConnection(pool, configuration);
if (configuration.storage_type == RedisStorageType::HASH_MAP)
throw Exception(ErrorCodes::UNSUPPORTED_METHOD, "Cannot use loadIds with 'hash_map' storage type");
if (!dict_struct.id)
throw Exception(ErrorCodes::UNSUPPORTED_METHOD, "'id' is required for selective loading");
RedisArray keys;
for (UInt64 id : ids)
keys << DB::toString(id);
return QueryPipeline(std::make_shared<RedisSource>(
std::move(connection), std::move(keys),
configuration.storage_type, sample_block, REDIS_MAX_BLOCK_SIZE));
}
QueryPipeline RedisDictionarySource::loadKeys(const Columns & key_columns, const std::vector<size_t> & requested_rows)
{
auto connection = getRedisConnection(pool, configuration);
if (key_columns.size() != dict_struct.key->size())
throw Exception(ErrorCodes::LOGICAL_ERROR, "The size of key_columns does not equal to the size of dictionary key");
RedisArray keys;
for (auto row : requested_rows)
{
RedisArray key;
for (size_t i = 0; i < key_columns.size(); ++i)
{
const auto & type = dict_struct.key->at(i).type;
if (isInteger(type))
key << DB::toString(key_columns[i]->get64(row));
else if (isString(type))
key << (*key_columns[i])[row].get<const String &>();
else
throw Exception(ErrorCodes::LOGICAL_ERROR, "Unexpected type of key in Redis dictionary");
}
keys.add(key);
}
return QueryPipeline(std::make_shared<RedisSource>(
std::move(connection), std::move(keys),
configuration.storage_type, sample_block, REDIS_MAX_BLOCK_SIZE));
}
String RedisDictionarySource::toString() const
{
return "Redis: " + configuration.host + ':' + DB::toString(configuration.port);
}
}
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