Dissertaç ˜ao de Mestrado Mestrado em Engenharia Informática Jo ...

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1. INTRODUCTION 1.2. Problem Description Listing 1.2: Eclipse configuration file excerpt [mysqld] # # * Basic Settings # Listing 1.3: MySQL configuration file excerpt user = mysql pid-file = /var/run/mysqld/mysqld.pid socket = /var/run/mysqld/mysqld.sock port = 3306 MySQL The MySQL [Mic09b] configuration files (Listing 1.3) are in a format similar to the INI file format (ahead in Section 1.3). A MySQL configuration file implements parameters formed as id - separator - value, where the separator is the ‘=’ character; comments which are text lines starting with the ‘#’ character; and blocks identified by an initial header and which may contain multiple parameters and/or comments. PostgreSQL The PostgreSQL [Gro09b] configuration files (Listing 1.4) are an amalgam of parameters and comments. A parameter is formed as id - separator - value, where the separator is the ‘=’ character and the value may be a keyword or a string delimited by the apostrophe character as the value. A comment may appear anywhere in the file and is identified by the ‘#’ character. Unlike the previous examples, the PostgreSQL configuration files do not implement the block pattern, although there seems to be a followed convention in which a set of parameters is preceded by a comment, which is similar to a block. Mantis The Mantis PHP Bug Tracker [Gro09a] configuration file (Listing 1.5) implements parameters of the form $ - key - separator - value, where the separator is the ‘=’ character and the value is a keyword or a string delimited by apostrophes or quotes. It also implements comments, which are text lines that start with the ‘#’ character. 6
1. INTRODUCTION 1.2. Problem Description Listing 1.4: PostgreSQL configuration file excerpt #----------------------------------------------- # CLIENT CONNECTION DEFAULTS #----------------------------------------------- datestyle = ’iso, mdy’ timezone = unknown # actually, defaults to TZ #timezone_abbreviations = ’Default’ # --- database variables --------- Listing 1.5: Mantis configuration file excerpt # set these values to match your setup $g_hostname = "localhost"; $g_db_username = "mantisdbuser"; $g_webmaster_email = ’webmaster@example.com’; $g_allow_file_upload = ON; 1.2.4 Conclusion The VIRTU project usage scenarios also allowed us to conclude that overall, configuration files either follow three formats: • Apache-like format; • INI-like format; • XML-like format. The Apache-like format is characterized by defining parameters as key/value pairs separated by spaces or a similar character, blocks delimited by a header and a footer, containing other patterns, and comments. The INI-like format defines parameters as key/value pairs separated by an equal, space or a similar character, blocks delimited by a header and comments. The XML-like format defines blocks as XML elements delimited by a header and a footer, if they contain other blocks, or a single tag if they do not contain other blocks, parameters as XML attributes contained in an XML tag, and comments. SmART should provide built-in support for these three configuration file categories, seen as most of the configuration files fit in one of these categories. However, the tool must also be extensible to support new configuration file formats. 7
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Bibliography [Ama09] Amazon. Amazon
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BIBLIOGRAPHY [Sol09a] Evolve Space
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Dissertaç ˜ao de Mestrado Mestrado em Engenharia Informática Jo ...

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