title: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð¼ÐµÑÐ¾Ð´Ð° Ð´ÐµÐºÐ»Ð°ÑÐ°ÑÐ¸Ð²Ð½Ð¾Ð³Ð¾ Ð·Ð°Ð´Ð°Ð½Ð¸Ñ ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»ÑÐ½Ð½ÑÑ Ð²ÑÑÐ¸ÑÐ»ÐµÐ½Ð¸Ð¹, Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð½Ð¾Ð³Ð¾ Ð½Ð° Ð°Ð½Ð½Ð¾ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ð¸ Ð¾Ð¿ÐµÑÐ°ÑÐ¸Ð¹ ÐºÐ¾Ð½ÑÑÐ°ÐºÑÐ°Ð¼Ð¸
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Contract-based approach to dataflows specification
Creators: name: Ð¡ÑÐ¾ÑÐ½, ÐÐ½Ð´ÑÐµÐ¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2021
Subjects: ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»ÑÐ½Ð½ÑÐµ Ð²ÑÑÐ¸ÑÐ»ÐµÐ½Ð¸Ñ
Apache Beam
Haskell
distributed computations

description: Ð Ð°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐµ Ð¼ÐµÑÐ¾Ð´Ð° Ð·Ð°Ð´Ð°Ð½Ð¸Ñ ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»ÑÐ½Ð½ÑÑ Ð²ÑÑÐ¸ÑÐ»ÐµÐ½Ð¸Ð¹, ÐºÐ¾ÑÐ¾ÑÑÐ¹ Ð¿Ð¾Ð·Ð²Ð¾Ð»ÑÐµÑ Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð´Ð¸ÑÑ Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÑÑ Ð¾Ð¿ÑÐ¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ñ Ð² Ð·Ð°Ð¿ÑÐ¾ÑÐ°Ñ, Ð¸ÑÐ¿Ð¾Ð»ÑÐ·ÑÑÑÐ¸Ñ Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð»ÑÐ½ÑÐµ Ð¾Ð¿ÐµÑÐ°ÑÐ¸Ð¸ Ð¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°ÑÐµÐ»Ñ. Ð­ÑÐ¾ Ð´Ð¾ÑÑÐ¸Ð³Ð°ÐµÑÑÑ Ð·Ð° ÑÑÑÑ Ð°Ð½Ð½Ð¾ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¾Ð¿ÐµÑÐ°ÑÐ¸Ð¹ Ð½ÐµÐºÐ¾ÑÐ¾ÑÑÐ¼Ð¸ ÑÐ¿ÐµÑÐ¸ÑÐ¸ÐºÐ°ÑÐ¸ÑÐ¼Ð¸, ÐºÐ¾Ð½ÑÑÐ°ÐºÑÐ°Ð¼Ð¸. Ð¡ Ð¸Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ ÑÐ¸ÑÑÐµÐ¼Ð° Ð¼Ð¾Ð¶ÐµÑ Ð³Ð°ÑÐ°Ð½ÑÐ¸ÑÐ¾Ð²Ð°ÑÑ, ÑÑÐ¾ Ð¿ÑÐµÐ¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°Ð½Ð½ÑÐ¹ Ð·Ð°Ð¿ÑÐ¾Ñ ÑÐºÐ²Ð¸Ð²Ð°Ð»ÐµÐ½ÑÐµÐ½ Ð¸ÑÑÐ¾Ð´Ð½Ð¾Ð¼Ñ. ÐÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ð¾ Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ðµ ÐºÐ¾Ð½ÑÑÐ°ÐºÑÐ¾Ð² Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ ÐºÐ»Ð°ÑÑÐ¾Ð² ÑÐ¸Ð¿Ð¾Ð² ÑÐ·ÑÐºÐ° Haskell, ÑÐµÐ°Ð»Ð¸Ð·Ð¾Ð²Ð°Ð½Ñ Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð¸ÑÐµÐ»Ð¸ ÑÑÐ¸Ñ ÐºÐ»Ð°ÑÑÐ¾Ð² ÑÐ¸Ð¿Ð¾Ð² Ð´Ð»Ñ Ð¿ÑÐ¾ÑÑÑÑ ÐºÐ¾Ð½ÑÑÐ°ÐºÑÐ¾Ð². ÐÑÐµÐ´Ð»Ð¾Ð¶ÐµÐ½ Ð¼ÐµÑÐ¾Ð´ Ð·Ð°Ð´Ð°Ð½Ð¸Ñ ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»ÑÐ½Ð½ÑÑ Ð²ÑÑÐ¸ÑÐ»ÐµÐ½Ð¸Ð¹, Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð½ÑÐ¹ Ð½Ð° ÐºÐ¾Ð½ÑÑÐ°ÐºÑÐ°Ñ - CGraph. Ð ÐµÐ°Ð»Ð¸Ð·Ð¾Ð²Ð°Ð½ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼ Ð³ÐµÐ½ÐµÑÐ°ÑÐ¸Ð¸ Ð²ÑÑÐ¸ÑÐ»Ð¸ÑÐµÐ»ÑÐ½ÑÑ Ð³ÑÐ°ÑÐ¾Ð², ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²ÑÑÑÐ¸Ñ CGraph. Ð Ð°ÑÑÐ¼Ð¾ÑÑÐµÐ½ Ð¿ÑÐ¸Ð¼ÐµÑ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ CGraph Ð¿Ð¾Ð´ÑÐ¾Ð´Ð° Ðº Ð¿ÑÐ°ÐºÑÐ¸ÑÐµÑÐºÐ¾Ð¹ Ð·Ð°Ð´Ð°ÑÐµ Ð¾Ð±Ð½Ð°ÑÑÐ¶ÐµÐ½Ð¸Ñ Ð¼Ð¾ÑÐµÐ½Ð½Ð¸ÑÐµÑÐºÐ¸Ñ ÑÑÐ°Ð²Ð¾Ðº Ð½Ð° Ð¾Ð½Ð»Ð°Ð¹Ð½ Ð°ÑÐºÑÐ¸Ð¾Ð½Ðµ. Ð ÑÐ¾Ð´Ðµ ÑÐ°Ð±Ð¾ÑÑ Ð±ÑÐ» ÑÐµÐ°Ð»Ð¸Ð·Ð¾Ð²Ð°Ð½ Ð¿ÑÐ¾ÑÐ¾ÑÐ¸Ð¿ Ð½Ð° ÑÐ·ÑÐºÐµ Haskell, ÐºÐ¾ÑÐ¾ÑÑÐ¹ Ð¿Ð¾Ð·Ð²Ð¾Ð»ÑÐµÑ Ð·Ð°Ð´Ð°Ð²Ð°ÑÑ Ð²ÑÑÐ¸ÑÐ»ÐµÐ½Ð¸Ñ Ð² Ð²Ð¸Ð´Ðµ CGraph, Ð³ÐµÐ½ÐµÑÐ¸ÑÐ¾Ð²Ð°ÑÑ ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²ÑÑÑÐ¸Ðµ Ð²ÑÑÐ¸ÑÐ»Ð¸ÑÐµÐ»ÑÐ½ÑÐµ Ð³ÑÐ°ÑÑ Ð¸ Ð·Ð°Ð¿ÑÑÐºÐ°ÑÑ Ð¸Ñ, ÑÐ¼ÑÐ»Ð¸ÑÑÑ Apache Beam Core Transformations.
description: The work is devoted to developing a novel approach to defining distributed dataflows that is suitable for logical optimization in queries containing arbitrary user-defined operations. To achieve this declarative specifications called contracts are proposed. Using them the data processing system can ensure that the transformed query is equivalent to the original one. Presented contracts definition via Haskell type classes with implementation for simple contracts. A novel approach to defining distributed computation called CGraph is proposed. An algorithm of generation execution graphs corresponding to the given CGraph is implemented. An example of CGraph usage is considered in the practical case of online auction fraud detection. Prototype on Haskell is implemented that allows to specify computations via CGraph and run them on the emulation of the Apache Beam Core Transformations.