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Man Pages


Manual Reference Pages  -  KAFKA::INTERNALS (3)

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NAME

Kafka::Internals - Constants and functions used internally.

CONTENTS

VERSION

This documentation refers to Kafka::Internals version 0.8010 .

SYNOPSIS



    use 5.010;
    use strict;
    use warnings;

    use Kafka::Internals qw(
        $MAX_SOCKET_REQUEST_BYTES
    );

    my $bin_stream_size = $MAX_SOCKET_REQUEST_BYTES;



DESCRIPTION

This module is private and should not be used directly.

In order to achieve better performance, functions of this module do not perform arguments validation.

    EXPORT

The following constants are available for export

$APIKEY_PRODUCE

The numeric code that the ApiKey in the request take for the ProduceRequest request type.

$APIKEY_FETCH

The numeric code that the ApiKey in the request take for the FetchRequest request type.

$APIKEY_OFFSET

The numeric code that the ApiKey in the request take for the OffsetRequest request type.

$APIKEY_METADATA

The numeric code that the ApiKey in the request take for the MetadataRequest request type.

$MAX_SOCKET_REQUEST_BYTES

The maximum number of bytes in a socket request.

The maximum size of a request that the socket server will accept. Default limit (as configured in server.properties) is 104857600.

$PRODUCER_ANY_OFFSET

According to Apache Kafka documentation: ’When the producer is sending messages it doesn’t actually know the offset and can fill in any value here it likes.’

$MAX_CORRELATIONID

Largest positive integer on 32-bit machines.

$MAX_INT32

Largest positive integer on 32-bit machines.

$MAX_INT16

Largest positive int16 value.

    METHODS

The following methods are defined in the Kafka::Internals:

debug_level( $flags )

Gets or sets debug level for a particular Kafka module, based on environment variable PERL_KAFKA_DEBUG or flags.

$flags - (string) argument that can be used to pass coma delimited module names (omit Kafka::).

Returns $DEBUG level for the module from which debug_level was called.

SEE ALSO

The basic operation of the Kafka package modules:

Kafka - constants and messages used by the Kafka package modules.

Kafka::Connection - interface to connect to a Kafka cluster.

Kafka::Producer - interface for producing client.

Kafka::Consumer - interface for consuming client.

Kafka::Message - interface to access Kafka message properties.

Kafka::Int64 - functions to work with 64 bit elements of the protocol on 32 bit systems.

Kafka::Protocol - functions to process messages in the Apache Kafka’s Protocol.

Kafka::IO - low-level interface for communication with Kafka server.

Kafka::Exceptions - module designated to handle Kafka exceptions.

Kafka::Internals - internal constants and functions used by several package modules.

A wealth of detail about the Apache Kafka and the Kafka Protocol:

Main page at <http://kafka.apache.org/>

Kafka Protocol at <https://cwiki.apache.org/confluence/display/KAFKA/A+Guide+To+The+Kafka+Protocol>

SOURCE CODE

Kafka package is hosted on GitHub: <https://github.com/TrackingSoft/Kafka>

AUTHOR

Sergey Gladkov, <sgladkov@trackingsoft.com>

CONTRIBUTORS

Alexander Solovey

Jeremy Jordan

Sergiy Zuban

Vlad Marchenko

COPYRIGHT AND LICENSE

Copyright (C) 2012-2013 by TrackingSoft LLC.

This package is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See perlartistic at <http://dev.perl.org/licenses/artistic.html>.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

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perl v5.20.3 KAFKA::INTERNALS (3) 2015-02-06

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