NAME
    Riemann::Client - A Perl client for the Riemann event system

SYNOPSIS
        use Riemann::Client;

        # host and port are optional
        my $r = Riemann::Client->new(
            host => 'localhost',
            port => 5555,
        );

        # send a simple event
        $r->send({service => 'testing', metric => 2.5});

        # Or a more complex one
        $r->send({
            host    => 'web3', # defaults to Net::Domain::hostfqdn()
            service => 'api latency',
            state   => 'warn',
            metric  => 63.5,
            time    => time() - 10, # defaults to time()
            description => '63.5 milliseconds per request',
        });

        # send several events at once
        my @events = (
            { service => 'service1', ... },
            { service => 'service2', ... },
        );
        $r->send(@events);

        # Get all the states from the server
        my $res = $r->query('true');

        # Or specific states matching a query
        $res = $r->query('host =~ "%.dc1" and state = "critical"');

DESCRIPTION
    Riemann::Client sends events and/or queries to a Riemann server.

METHODS
  new
    Returns an instance of the Riemann::Client. These are the optional
    arguments accepted:

   host
    The Riemann server. Defaults to "localhost"

   port
    Port where the Riemann server is listening. Defaults to 5555

   proto
    By default Riemann::Client will use TCP to communicate over the network.
    You can force the usage of UDP setting this argument to 'udp'. UDP
    datagrams have a maximum size of 16384 bytes by Riemann's default. If
    you force the usage of UDP and try to send a larger message, an
    exception will be raised. In TCP mode, the client will try to reconnect
    to the server in case the connection is lost.

  send
    Accepts a list of events (as hashrefs) and sends them over the wire to
    the server. In TCP mode, it will die if there are errors while
    communicating with the server. In case the connection is lost, it will
    try to reconnect.

  query
    Accepts a string and returns a message.

MESSAGE SPECS
    This is the specification of the messages in Google::ProtocolBuffers
    format:

        message State {
          optional int64 time = 1;
          optional string state = 2;
          optional string service = 3;
          optional string host = 4;
          optional string description = 5;
          optional bool once = 6;
          repeated string tags = 7;
          optional float ttl = 8;
        }

        message Event {
          optional int64 time = 1;
          optional string state = 2;
          optional string service = 3;
          optional string host = 4;
          optional string description = 5;
          repeated string tags = 7;
          optional float ttl = 8;
          repeated Attribute attributes = 9;

          optional sint64 metric_sint64 = 13;
          optional double metric_d = 14;
          optional float metric_f = 15;
        }

        message Query {
          optional string string = 1;
        }

        message Msg {
          optional bool ok = 2;
          optional string error = 3;
          repeated State states = 4;
          optional Query query = 5;
          repeated Event events = 6;
        }

        message Attribute {
          required string key = 1;
          optional string value = 2;
        }

SEE ALSO
    *   All About Riemann <http://aphyr.github.com/riemann/>

    *   Ruby client <https://github.com/aphyr/riemann-ruby-client>

AUTHOR
    *   Miquel Ruiz <mruiz@cpan.org>

COPYRIGHT AND LICENSE
    This software is copyright (c) 2012 by Miquel Ruiz.

    This is free software; you can redistribute it and/or modify it under
    the same terms as the Perl 5 programming language system itself.