Zeromq input pluginedit

Note

This plugin cannot be installed on the current version of Logstash. We are working on resolving this problem.

Read events over a 0MQ SUB socket.

You need to have the 0mq 2.1.x library installed to be able to use this input plugin.

The default settings will create a subscriber binding to tcp://127.0.0.1:2120 waiting for connecting publishers.

 

Synopsisedit

This plugin supports the following configuration options:

Required configuration options:

zeromq {
    topology => ...
}

Available configuration options:

Setting Input typeRequiredDefault value

add_field

hash

No

{}

address

array

No

["tcp://*:2120"]

codec

codec

No

"json"

mode

string, one of ["server", "client"]

No

"server"

sender

string

No

sockopt

hash

No

tags

array

No

topic

array

No

topology

string, one of ["pushpull", "pubsub", "pair"]

Yes

type

string

No

Detailsedit

 

add_fieldedit

  • Value type is hash
  • Default value is {}

Add a field to an event

addressedit

  • Value type is array
  • Default value is ["tcp://*:2120"]

0mq socket address to connect or bind Please note that inproc:// will not work with logstash as each we use a context per thread. By default, inputs bind/listen and outputs connect

codecedit

  • Value type is codec
  • Default value is "json"

The codec used for input data. Input codecs are a convenient method for decoding your data before it enters the input, without needing a separate filter in your Logstash pipeline.

modeedit

  • Value can be any of: server, client
  • Default value is "server"

mode server mode binds/listens client mode connects

senderedit

  • Value type is string
  • There is no default value for this setting.

sender overrides the sender to set the source of the event default is zmq+topology://type/

sockoptedit

  • Value type is hash
  • There is no default value for this setting.

0mq socket options This exposes zmq_setsockopt for advanced tuning see http://api.zeromq.org/2-1:zmq-setsockopt for details

This is where you would set values like:

  • ZMQ::HWM - high water mark
  • ZMQ::IDENTITY - named queues
  • ZMQ::SWAP_SIZE - space for disk overflow

example: sockopt => ["ZMQ::HWM", 50, "ZMQ::IDENTITY", "my_named_queue"]

tagsedit

  • Value type is array
  • There is no default value for this setting.

Add any number of arbitrary tags to your event.

This can help with processing later.

topicedit

  • Value type is array
  • There is no default value for this setting.

0mq topic This is used for the pubsub topology only On inputs, this allows you to filter messages by topic On outputs, this allows you to tag a message for routing NOTE: ZeroMQ does subscriber side filtering. NOTE: All topics have an implicit wildcard at the end You can specify multiple topics here

topologyedit

  • This is a required setting.
  • Value can be any of: pushpull, pubsub, pair
  • There is no default value for this setting.

0mq topology The default logstash topologies work as follows:

  • pushpull - inputs are pull, outputs are push
  • pubsub - inputs are subscribers, outputs are publishers
  • pair - inputs are clients, inputs are servers

If the predefined topology flows don’t work for you, you can change the mode setting TODO (lusis) add req/rep MAYBE TODO (lusis) add router/dealer

typeedit

  • Value type is string
  • There is no default value for this setting.

Add a type field to all events handled by this input.

Types are used mainly for filter activation.

The type is stored as part of the event itself, so you can also use the type to search for it in Kibana.

If you try to set a type on an event that already has one (for example when you send an event from a shipper to an indexer) then a new input will not override the existing type. A type set at the shipper stays with that event for its life even when sent to another Logstash server.