NAME Pye::MongoDB - Log with Pye on top of MongoDB SYNOPSIS use Pye::MongoDB; my $pye = Pye::MongoDB->new( host => 'mongodb://logserver1:27017,logserver2:27017', find_master => 1, database => 'log_db', collection => 'myapp_log' ); # now start logging $pye->log($session_id, "Some log message", { data => 'example data' }); # inspect the logs from the command line pye -b MongoDB -d log_db -c myapp_log DESCRIPTION This package provides a MongoDB backend for the Pye logging system. This is currently the easiest backend to use, since no setup is needed in order to start logging with it. Messages will be stored in a MongoDB database with the following keys: * "session_id" - the session ID, a string, always exists * "date" - the date the messages was logged, in ISODate format, always exists * "text" - the text of the message, a string, always exists * "data" - supplemental JSON structure, optional An index on the "session_id" field will automatically be created. NOTES AND RECOMMENDATIONS As of this writing (MongoDB v2.6), MongoDB is kind of a storage guzzler. You might find it useful to create a TTL index on the log collection. For example, the following line (entered into the "mongo" shell) will create a time-to-live index of 2 days on a log collection: db.log_collection.ensureIndex({ date: 1 }, { expireAfterSeconds: 172800 }) Alternatively, you could make the collection capped and limit it by size. Note, however, that the _remove_session_logs() method will not work in that case. Also, consider using TokuMX as a drop-in replacement for MongoDB. It it faster, uses much less storage space and supports ACID transactions. USING THE pye COMMAND LINE UTILITY The pye command line utility, used to inspect logs, provides all command line options to the "new( [ %options ] )" constructor, which in turn passes anything to MongoDB::MongoClient. This means that if your database has replication, or requires authentication, you can provide these options from the command line. For example: pye -b MongoDB --host mongodb://server1:27017,server2:27017 --find_master=1 -d log_db -c myapp_log --username log_user --password very_secret "host", "find_master", "username" and "password" in this example will be passed to "MongoDB::MongoClient". CONSTRUCTOR new( [ %options ] ) Create a new instance of this class. All options are optional. * database - the name of the database, defaults to "logs" * collection (or table) - the name of the collection, defaults to "logs" * be_safe - whether to enable the "safe" flag when inserting log messages, defaults to a false value Any other option you provide will be passed to MongoDB::MongoClient, so pass anything needed in order to connect to the database server (such as "host", "find_master", etc.). OBJECT METHODS The following methods implement the Pye role, so you should refer to "Pye" for their documentation. Some methods, however, have some MongoDB-specific notes, so keep reading. log( $session_id, $text, [ \%data ] ) If "\%data" is provided, this module will traverse it recursively, replacing any hash-key that contains dots with semicolons, as MongoDB does not support dots in field names. session_log( $session_id ) list_sessions( [ \%opts ] ) Takes all options defined by Pye. The "sort" option, however, takes a MongoDB sorting definition, that is a hash-ref, e.g. "{ _id => 1 }". This will default to "{ date => -1 }". CONFIGURATION AND ENVIRONMENT "Pye::MongoDB" requires no configuration files or environment variables. DEPENDENCIES "Pye::MongoDB" depends on the following CPAN modules: * version * Carp * MongoDB * Pye * Role::Tiny * Tie::IxHash BUGS AND LIMITATIONS Please report any bugs or feature requests to "bug-Pye-MongoDB@rt.cpan.org", or through the web interface at . SUPPORT You can find documentation for this module with the perldoc command. perldoc Pye::MongoDB You can also look for information at: * RT: CPAN's request tracker * AnnoCPAN: Annotated CPAN documentation * CPAN Ratings * Search CPAN AUTHOR Ido Perlmuter LICENSE AND COPYRIGHT Copyright (c) 2015, Ido Perlmuter "ido@ido50.net". This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either version 5.8.1 or any later version. See perlartistic and perlgpl. The full text of the license can be found in the LICENSE file included with this module. DISCLAIMER OF WARRANTY BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE SOFTWARE, TO THE EXTENT PERMITTED BY APPLICABLE LAW. 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