transaction.hpp

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#pragma once
 
/// @file userver/storages/redis/transaction.hpp
/// @brief @copybrief storages::redis::Transaction
 
#include <memory>
#include <string>
 
#include <userver/storages/redis/bit_operation.hpp>
#include <userver/storages/redis/command_options.hpp>
#include <userver/storages/redis/request.hpp>
 
USERVER_NAMESPACE_BEGIN
 
namespace storages::redis {
 
/// @brief Atomic sequence of Redis commands (https://redis.io/topics/transactions), that is usually retrieved from
/// storages::redis::Client::Multi().
///
/// @note Redis transaction implements isolation, but not
/// all-or-nothing semantics (IOW a subcommand may fail, but the following
/// subcommands will succeed).
///
/// Membef functions add commands to the `Transaction` object. For each added command a future-like object is returned.
/// You can get the result of each transaction's subcommand by calling `Get()` method for these objects.
/// Commands are be sent to a server after calling `Exec()` that returns `RequestExec` object.
/// You should not call `Get()` method in a future-like subcommand's object
/// before calling `Get()` method on `RequestExec` object.
///
/// @snippet redis/src/storages/redis/client_redistest.cpp  redis transaction sample
class Transaction {
public:
    enum class CheckShards { kNo, kSame };
 
    virtual ~Transaction() = default;
 
    /// Finish current atomic sequence of commands and send it to a server.
    /// Returns 'future-like' request object.
    /// The data will not be set for the future-like objects for subcommands if
    /// `Get()` method of the returned object is not called or redis did not return an array with command responses.
    /// In the last case `Get()` will throw a corresponding exception.
    virtual RequestExec Exec(const CommandControl& command_control) = 0;
 
    // redis commands:
 
    virtual RequestAppend Append(std::string key, std::string value) = 0;
 
    virtual RequestBitop Bitop(BitOperation op, std::string dest, std::vector<std::string> srcs) = 0;
 
    virtual RequestDbsize Dbsize(size_t shard) = 0;
 
    virtual RequestDecr Decr(std::string key) = 0;
 
    virtual RequestDel Del(std::string key) = 0;
 
    virtual RequestDel Del(std::vector<std::string> keys) = 0;
 
    virtual RequestUnlink Unlink(std::string key) = 0;
 
    virtual RequestUnlink Unlink(std::vector<std::string> keys) = 0;
 
    virtual RequestExists Exists(std::string key) = 0;
 
    virtual RequestExists Exists(std::vector<std::string> keys) = 0;
 
    virtual RequestExpire Expire(std::string key, std::chrono::seconds ttl) = 0;
 
    virtual RequestGeoadd Geoadd(std::string key, GeoaddArg point_member) = 0;
 
    virtual RequestGeoadd Geoadd(std::string key, std::vector<GeoaddArg> point_members) = 0;
 
    virtual RequestGeoradius Georadius(
        std::string key,
        Longitude lon,
        Latitude lat,
        double radius,
        const GeoradiusOptions& georadius_options
    ) = 0;
 
    virtual RequestGeosearch
    Geosearch(std::string key, std::string member, double radius, const GeosearchOptions& geosearch_options) = 0;
 
    virtual RequestGeosearch Geosearch(
        std::string key,
        std::string member,
        BoxWidth width,
        BoxHeight height,
        const GeosearchOptions& geosearch_options
    ) = 0;
 
    virtual RequestGeosearch Geosearch(
        std::string key,
        Longitude lon,
        Latitude lat,
        double radius,
        const GeosearchOptions& geosearch_options
    ) = 0;
 
    virtual RequestGeosearch Geosearch(
        std::string key,
        Longitude lon,
        Latitude lat,
        BoxWidth width,
        BoxHeight height,
        const GeosearchOptions& geosearch_options
    ) = 0;
 
    virtual RequestGet Get(std::string key) = 0;
 
    virtual RequestGetset Getset(std::string key, std::string value) = 0;
 
    virtual RequestHdel Hdel(std::string key, std::string field) = 0;
 
    virtual RequestHdel Hdel(std::string key, std::vector<std::string> fields) = 0;
 
    virtual RequestHexists Hexists(std::string key, std::string field) = 0;
 
    virtual RequestHget Hget(std::string key, std::string field) = 0;
 
    virtual RequestHgetall Hgetall(std::string key) = 0;
 
    virtual RequestHincrby Hincrby(std::string key, std::string field, int64_t increment) = 0;
 
    virtual RequestHincrbyfloat Hincrbyfloat(std::string key, std::string field, double increment) = 0;
 
    virtual RequestHkeys Hkeys(std::string key) = 0;
 
    virtual RequestHlen Hlen(std::string key) = 0;
 
    virtual RequestHmget Hmget(std::string key, std::vector<std::string> fields) = 0;
 
    virtual RequestHmset Hmset(std::string key, std::vector<std::pair<std::string, std::string>> field_values) = 0;
 
    virtual RequestHset Hset(std::string key, std::string field, std::string value) = 0;
 
    virtual RequestHsetnx Hsetnx(std::string key, std::string field, std::string value) = 0;
 
    virtual RequestHvals Hvals(std::string key) = 0;
 
    virtual RequestIncr Incr(std::string key) = 0;
 
    virtual RequestKeys Keys(std::string keys_pattern, size_t shard) = 0;
 
    virtual RequestLindex Lindex(std::string key, int64_t index) = 0;
 
    virtual RequestLlen Llen(std::string key) = 0;
 
    virtual RequestLpop Lpop(std::string key) = 0;
 
    virtual RequestLpush Lpush(std::string key, std::string value) = 0;
 
    virtual RequestLpush Lpush(std::string key, std::vector<std::string> values) = 0;
 
    virtual RequestLpushx Lpushx(std::string key, std::string element) = 0;
 
    virtual RequestLrange Lrange(std::string key, int64_t start, int64_t stop) = 0;
 
    virtual RequestLrem Lrem(std::string key, int64_t count, std::string element) = 0;
 
    virtual RequestLtrim Ltrim(std::string key, int64_t start, int64_t stop) = 0;
 
    virtual RequestMget Mget(std::vector<std::string> keys) = 0;
 
    virtual RequestMset Mset(std::vector<std::pair<std::string, std::string>> key_values) = 0;
 
    virtual RequestPersist Persist(std::string key) = 0;
 
    virtual RequestPexpire Pexpire(std::string key, std::chrono::milliseconds ttl) = 0;
 
    virtual RequestPing Ping(size_t shard) = 0;
 
    virtual RequestPingMessage PingMessage(size_t shard, std::string message) = 0;
 
    virtual RequestRename Rename(std::string key, std::string new_key) = 0;
 
    virtual RequestRpop Rpop(std::string key) = 0;
 
    virtual RequestRpush Rpush(std::string key, std::string value) = 0;
 
    virtual RequestRpush Rpush(std::string key, std::vector<std::string> values) = 0;
 
    virtual RequestRpushx Rpushx(std::string key, std::string element) = 0;
 
    virtual RequestSadd Sadd(std::string key, std::string member) = 0;
 
    virtual RequestSadd Sadd(std::string key, std::vector<std::string> members) = 0;
 
    virtual RequestScard Scard(std::string key) = 0;
 
    virtual RequestSet Set(std::string key, std::string value) = 0;
 
    virtual RequestSet Set(std::string key, std::string value, std::chrono::milliseconds ttl) = 0;
 
    virtual RequestSetIfExist SetIfExist(std::string key, std::string value) = 0;
 
    virtual RequestSetIfExist SetIfExist(std::string key, std::string value, std::chrono::milliseconds ttl) = 0;
 
    virtual RequestSetIfNotExist SetIfNotExist(std::string key, std::string value) = 0;
 
    virtual RequestSetIfNotExist SetIfNotExist(std::string key, std::string value, std::chrono::milliseconds ttl) = 0;
 
    virtual RequestSetex Setex(std::string key, std::chrono::seconds seconds, std::string value) = 0;
 
    virtual RequestSismember Sismember(std::string key, std::string member) = 0;
 
    virtual RequestSmembers Smembers(std::string key) = 0;
 
    virtual RequestSrandmember Srandmember(std::string key) = 0;
 
    virtual RequestSrandmembers Srandmembers(std::string key, int64_t count) = 0;
 
    virtual RequestSrem Srem(std::string key, std::string member) = 0;
 
    virtual RequestSrem Srem(std::string key, std::vector<std::string> members) = 0;
 
    virtual RequestStrlen Strlen(std::string key) = 0;
 
    virtual RequestTime Time(size_t shard) = 0;
 
    virtual RequestTtl Ttl(std::string key) = 0;
 
    virtual RequestType Type(std::string key) = 0;
 
    virtual RequestZadd Zadd(std::string key, double score, std::string member) = 0;
 
    virtual RequestZadd Zadd(std::string key, double score, std::string member, const ZaddOptions& options) = 0;
 
    virtual RequestZadd Zadd(std::string key, std::vector<std::pair<double, std::string>> scored_members) = 0;
 
    virtual RequestZadd
    Zadd(std::string key, std::vector<std::pair<double, std::string>> scored_members, const ZaddOptions& options) = 0;
 
    virtual RequestZaddIncr ZaddIncr(std::string key, double score, std::string member) = 0;
 
    virtual RequestZaddIncrExisting ZaddIncrExisting(std::string key, double score, std::string member) = 0;
 
    virtual RequestZcard Zcard(std::string key) = 0;
 
    virtual RequestZcount Zcount(std::string key, double min, double max) = 0;
 
    virtual RequestZrange Zrange(std::string key, int64_t start, int64_t stop) = 0;
 
    virtual RequestZrangeWithScores ZrangeWithScores(std::string key, int64_t start, int64_t stop) = 0;
 
    virtual RequestZrangebyscore Zrangebyscore(std::string key, double min, double max) = 0;
 
    virtual RequestZrangebyscore Zrangebyscore(std::string key, std::string min, std::string max) = 0;
 
    virtual RequestZrangebyscore
    Zrangebyscore(std::string key, double min, double max, const RangeOptions& range_options) = 0;
 
    virtual RequestZrangebyscore
    Zrangebyscore(std::string key, std::string min, std::string max, const RangeOptions& range_options) = 0;
 
    virtual RequestZrangebyscoreWithScores ZrangebyscoreWithScores(std::string key, double min, double max) = 0;
 
    virtual RequestZrangebyscoreWithScores
    ZrangebyscoreWithScores(std::string key, std::string min, std::string max) = 0;
 
    virtual RequestZrangebyscoreWithScores
    ZrangebyscoreWithScores(std::string key, double min, double max, const RangeOptions& range_options) = 0;
 
    virtual RequestZrangebyscoreWithScores
    ZrangebyscoreWithScores(std::string key, std::string min, std::string max, const RangeOptions& range_options) = 0;
 
    virtual RequestZrem Zrem(std::string key, std::string member) = 0;
 
    virtual RequestZrem Zrem(std::string key, std::vector<std::string> members) = 0;
 
    virtual RequestZremrangebyrank Zremrangebyrank(std::string key, int64_t start, int64_t stop) = 0;
 
    virtual RequestZremrangebyscore Zremrangebyscore(std::string key, double min, double max) = 0;
 
    virtual RequestZremrangebyscore Zremrangebyscore(std::string key, std::string min, std::string max) = 0;
 
    virtual RequestZscore Zscore(std::string key, std::string member) = 0;
 
    // end of redis commands
};
class Transaction {…};
 
using TransactionPtr = std::unique_ptr<Transaction>;
 
class EmptyTransactionException : public Exception {
public:
    using Exception::Exception;
};
class EmptyTransactionException : public Exception {…};
 
class NotStartedTransactionException : public Exception {
public:
    using Exception::Exception;
};
class NotStartedTransactionException : public Exception {…};
 
}  // namespace storages::redis
 
USERVER_NAMESPACE_END