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Implementation of Communication Middleware in JAVA ME
Martinák, Jan ; Martínek, Tomáš (referee) ; Kořenek, Jan (advisor)
In almost each enterprise there is a software support for business processes. With a growing number of the applications there is an increasing demand to integrate those applications in order to have an effectively working environment, which generates profit. In enterprise applications integration there are few principles, each with their own advantages and disadvantages. However, the message-oriented middleware layer proves to be the best solution to many integration scenarios. This work deals with an enterprise of applications running on multifunction embedded office devices based on Java ME platform, and introduces an in-house developed communication middleware layer to integrate those applications. The resulting software component applies principles of messaging in a printing management SOA environment to communicate with a print server using a designed set of messages.
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Communication model using Data distribution service and communication security assessment
Frollo, Martin ; Fujdiak, Radek (referee) ; Pokorný, Jiří (advisor)
The diploma thesis is focusing on middleware layer in distributed systems. It introduces typically used communication protocols and standards operating on this layer. In theoretical part it brings closer look at OMG DDS specification. This part contains fundamental functionalities of this specification along with its architecture blocks. Thesis also describes the RTPS protocol functionality. Existing implementations of OMG DDS standard are described at the end of theoretical part. OpenDDS 3.13 implementation is used in practical part of thesis. It is deployed and tested on various platforms. Next part verifies option of securing RTPS data stream using beta version of OMG DDS Security, which OpenDDS 3.13 implementation contains. Secured and unsecured data flows are being compared. Latency of data stream is also important, especially in distributed systems. DDS system, which measures latency of RTPS stream is created in practical part. Latency of this DDS system can be measured in various configurations. Difference of devices’ performance used in measurements can be clearly seen in latency results where the size of data samples is increasing. Differences of measured latency are also recognizable between reliable and unreliable and secure and unsecure RTPS stream. Part of measurements is made between 2 physical devices with and without an attacker. Type of attack is MITM and it captures RTPS flow, which does not belong to attacking machine.
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Proposal of Efficiency Improvements for Internal Company E-shop
Verčimák, Peter ; Kopáč, Jiři Vili (referee) ; Luhan, Jan (advisor)
This masters thesis will focus on proposals which will lead to improve functionality of company e-shop. Will describe functionality and importance of the e-shop for company business. Proposals are aimed to increase users comfort and more effective usage of computing resources. There will be introduced processes which will help to implement proposed changes according to current trends in the design and project management of IS/ICT. This thesis will also take a look of potential risks of related to the transition to the new hardware and define change management process.
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Configurable Parallel Execution of System Tests within the Strimzi Project
Orsák, Maroš ; Rogalewicz, Adam (referee) ; Češka, Milan (advisor)
V poslednych rokoch mnoho spolocnosti prijalo Kubernetes a architekturu mikrosluzieb, ktoru umoznuje. Tato technologia otvorila nove moznosti nielen pre velke spolocnosti, ale aj pre malych vyvojarov softveru. Kubernetes je system riadenia kontajnerov a nedavno sa objavil novy koncept, ako efektivnejsie organizovat kontajnery - vzor operatora. Jeden takyto operator je vyvinuty a udrziavany v ramci open-source projektu s nazvom Strimzi. Projekt Strimzi spaja niekolko nastrojov, ktore sa staraju o nasadenie Apache Kafka na Kubernetes. Kedze Kafka je komplexny, horizontalne skalovatelny, distribuovany system, viete si predstavit, ze jeho instalacia je pomerne zlozita akcia. Preto jednou z najvacsich vyziev pouzivania Kubernetes je, ako efektivne a rychlo otestovat projekty ako Kafka a Strimzi a zaroven overit integraciu s inymi podobnymi produktmi. Zdroje, ktore potrebuje Kubernetes, su ovela narocnejsie v porovnani s nasadenim Kafka na virtualne stroje alebo typicke instancie kontajnerov. Aby sme tento problem vyriesili, prijali sme principy par- alelneho vykonavania a vytvorili mechanizmus v ramci systemovych testov Strimzi, ktory paralelne spusta testy iba proti jedinemu klastru Kubernetes. Okrem toho sme navrhli uplne novu architekturu pre end-to-end testy. Vylepsenia su zamerane na skalovatelnost a skratenie casu vykonavania . Prostrednictvom niekolkych experimentov tato praca ukazuje, ze navrhovany mechanizmus s roznymi konfiguraciami klastra Kubernetes (vratane pocet uzlov Kubernetes , pocet paralelne vykonavanych testov a sad ) vyrazne urychlil vykonavanie testov.
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System for Managing Corporate Data Integration
Řezník, Michal ; Smrčka, Aleš (referee) ; Kočí, Radek (advisor)
Cílem této práce je návrh a implementace aplikačního rozhraní, který se stane součástí mikro aplikace patřící do integrační platformy firmy Onsemi. Práce se nejprve věnuje představení strategií používaných během vývoje systému, použitým nástrojům a návrhu samotného designu systému. Middleware platforma Onsemi obstarává více než 3000 da- tových toků denně a zajišťuje úspěšný každodenní chod korporátu. Tato platofrma garan- tuje doručení dat pro každou jednu integraci. Datové integrační toky mohou vytvářet token představující odchozí datový soubor uložený v souborovém systému. Každý jeden z daných toků vytváří během spuštění token, který se po dobu běhu toku stává jakousi reprezen- tací jeho aktuálního stavu. Token reprezentuje tento stav pomocí pohybu v souborovém systému serveru, na kterém zrovna běží aplikace obstarávající asynchronní doručení dat. Hlavním úkolem daného rozhraní je ulehčit správu neúspěšných datových integrací pro členy middleware týmu, kterými se musí zabývat společně s vyvíjením platfromy a zajišťováním nových integrací. Na konci práce je popsána implementace do systému firmy společně se zhodnocením přínosu vypracovaného řešení.
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Configurable Parallel Execution of System Tests within the Strimzi Project
Orsák, Maroš ; Rogalewicz, Adam (referee) ; Češka, Milan (advisor)
V poslednych rokoch mnoho spolocnosti prijalo Kubernetes a architekturu mikrosluzieb, ktoru umoznuje. Tato technologia otvorila nove moznosti nielen pre velke spolocnosti, ale aj pre malych vyvojarov softveru. Kubernetes je system riadenia kontajnerov a nedavno sa objavil novy koncept, ako efektivnejsie organizovat kontajnery - vzor operatora. Jeden takyto operator je vyvinuty a udrziavany v ramci open-source projektu s nazvom Strimzi. Projekt Strimzi spaja niekolko nastrojov, ktore sa staraju o nasadenie Apache Kafka na Kubernetes. Kedze Kafka je komplexny, horizontalne skalovatelny, distribuovany system, viete si predstavit, ze jeho instalacia je pomerne zlozita akcia. Preto jednou z najvacsich vyziev pouzivania Kubernetes je, ako efektivne a rychlo otestovat projekty ako Kafka a Strimzi a zaroven overit integraciu s inymi podobnymi produktmi. Zdroje, ktore potrebuje Kubernetes, su ovela narocnejsie v porovnani s nasadenim Kafka na virtualne stroje alebo typicke instancie kontajnerov. Aby sme tento problem vyriesili, prijali sme principy par- alelneho vykonavania a vytvorili mechanizmus v ramci systemovych testov Strimzi, ktory paralelne spusta testy iba proti jedinemu klastru Kubernetes. Okrem toho sme navrhli uplne novu architekturu pre end-to-end testy. Vylepsenia su zamerane na skalovatelnost a skratenie casu vykonavania . Prostrednictvom niekolkych experimentov tato praca ukazuje, ze navrhovany mechanizmus s roznymi konfiguraciami klastra Kubernetes (vratane pocet uzlov Kubernetes , pocet paralelne vykonavanych testov a sad ) vyrazne urychlil vykonavanie testov.
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Utilizing HLA for agent based development platforms
Jedlička, Tomáš ; Plch, Tomáš (advisor) ; Bednárek, David (referee)
The High Level Architecture (HLA) provides a universal solution for interconnecting various simulation environments and applications thus creating a more complex simulation entity. The idea is built upon controlled and directed data exchanges of objects and events (via the RunTime Interface - RTI) shared by participants (i.e. simulations) thus creating a distributed data environment. The aim of this thesis is to investigate usability of HLA for agent based development platforms (e.g. Pogamut) as well as providing transparent and simple to use access to HLA for HLA unaware applications. The thesis describes architecture and provides a prototype proof-of-concept implementation, which integrates HLA with two different (closed source) game engines providing them the ability to communicate to a simple client application according to a reasonable subset of the HLA standard. The thesis also provides performance measurements of prototype implementation.
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Implementation of Communication Middleware in JAVA ME
Martinák, Jan ; Martínek, Tomáš (referee) ; Kořenek, Jan (advisor)
In almost each enterprise there is a software support for business processes. With a growing number of the applications there is an increasing demand to integrate those applications in order to have an effectively working environment, which generates profit. In enterprise applications integration there are few principles, each with their own advantages and disadvantages. However, the message-oriented middleware layer proves to be the best solution to many integration scenarios. This work deals with an enterprise of applications running on multifunction embedded office devices based on Java ME platform, and introduces an in-house developed communication middleware layer to integrate those applications. The resulting software component applies principles of messaging in a printing management SOA environment to communicate with a print server using a designed set of messages.
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Communication model using Data distribution service and communication security assessment
Frollo, Martin ; Fujdiak, Radek (referee) ; Pokorný, Jiří (advisor)
The diploma thesis is focusing on middleware layer in distributed systems. It introduces typically used communication protocols and standards operating on this layer. In theoretical part it brings closer look at OMG DDS specification. This part contains fundamental functionalities of this specification along with its architecture blocks. Thesis also describes the RTPS protocol functionality. Existing implementations of OMG DDS standard are described at the end of theoretical part. OpenDDS 3.13 implementation is used in practical part of thesis. It is deployed and tested on various platforms. Next part verifies option of securing RTPS data stream using beta version of OMG DDS Security, which OpenDDS 3.13 implementation contains. Secured and unsecured data flows are being compared. Latency of data stream is also important, especially in distributed systems. DDS system, which measures latency of RTPS stream is created in practical part. Latency of this DDS system can be measured in various configurations. Difference of devices’ performance used in measurements can be clearly seen in latency results where the size of data samples is increasing. Differences of measured latency are also recognizable between reliable and unreliable and secure and unsecure RTPS stream. Part of measurements is made between 2 physical devices with and without an attacker. Type of attack is MITM and it captures RTPS flow, which does not belong to attacking machine.
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ProCom middleware
Kunčar, Jiří ; Bureš, Tomáš (advisor) ; Pop, Tomáš (referee)
The goal of this thesis is to develop and implement parts of a middleware that provides necessary support for the execution of ProCom components on top of the real-time operating system FreeRTOS. The ProCom is a component model for embedded systems developed at Mälardalen University. The primary problem is finding an appropriate balance between the level of abstraction and thoughtful utilization of system resources in embedded devices. The defined target platform has limitations in comparison to general purpose computer. These include constraints in available resources such as memory, CPU or bandwidth together with strict requirements in terms of worst-case response time and reliability. We have to also face the problem of limited debugging facilities or their complete absence. In this project, we have examined differences between several real-time and non real- time operating systems. We focus on finding a common subset of core functions that the system must support in order to ensure adequate support for running designed components. We have also identified and tested the suitable libraries to support different types of communication especially TCP/IP. However, we are keenly aware of the limitations of used communication types for analysis of the behavior of real-time systems.
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