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Parametric Properties for Log Checker
Čaládi, Filip ; Fiedor, Tomáš (referee) ; Smrčka, Aleš (advisor)
Plogchecker 2.0 is a tool for verification of user-defined properties over sequences of events in the traces of the program. The implementation of this tool mainly builds on the previous version of the tool Plogchecker. The main idea behind these tools is that the user has to specify system properties (parametric or non-parametric), make any program run records available to the verification tool and let the tool analyze. The analysis output is the report about the violation of specified properties with sequences of events that caused the error. This thesis proposes a new algorithm that optimizes the processing of event sequences against user-defined properties specifications. The optimizations are focused on both scalability as well as precision. Furthermore, it adds support for various parametric data types, such as string, number, date and time. Finally, it offers an easier and more comfortable way to specify such parametric properties. Throughout the series of experiments, it is shown that Plogchecker 2.0 is more scalable and precise compared to previous version of Plogchecker.
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A Tool for Creating Log Message Patterns
Hanus, Igor ; Janoušek, Vladimír (referee) ; Smrčka, Aleš (advisor)
Cieľom práce je vyvtorenie prenositeľnej webovej aplikácie na spracovanie logov pomocou kombinácie Grok vzorova a regulárnych výrazov, za účelom vytvorenia vzoru pre jednotlivé záznamy logu s možnosťou exportovania do YAML formátu, ktorý je spracovateľný nástrojom Plogchecker. Aplikácia bola implementovaná pomocou JavaScript knižnice React použitím jazyka TypeScript. Spracovanie jednotlivých regulárnych výrazov je riešené pomocou knižnice Oniguruma, ktorá je integrovaná do aplikácie pomocou WebAssembly. Dôvodom použitia Oniguruma knižnice bola nekompatibilita medzi prekladačmi regulárnych výrazov definovanými štandardom ECMAScript a prekladačmi, ktoré sú využívané pre preklad Grok výrazov. Realizacia aplikácie bola podrobená automatizovaným testom a užívateľským testom, s opravou zistených nálezov.
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Parametric Properties for Log Checker
Čaládi, Filip ; Fiedor, Tomáš (referee) ; Smrčka, Aleš (advisor)
Plogchecker 2.0 is a tool for verification of user-defined properties over sequences of events in the traces of the program. The implementation of this tool mainly builds on the previous version of the tool Plogchecker. The main idea behind these tools is that the user has to specify system properties (parametric or non-parametric), make any program run records available to the verification tool and let the tool analyze. The analysis output is the report about the violation of specified properties with sequences of events that caused the error. This thesis proposes a new algorithm that optimizes the processing of event sequences against user-defined properties specifications. The optimizations are focused on both scalability as well as precision. Furthermore, it adds support for various parametric data types, such as string, number, date and time. Finally, it offers an easier and more comfortable way to specify such parametric properties. Throughout the series of experiments, it is shown that Plogchecker 2.0 is more scalable and precise compared to previous version of Plogchecker.
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