Java_generator input plugin
editJava_generator input plugin
editLogstash Core Plugin. The java_generator input plugin cannot be installed or uninstalled independently of Logstash.
Getting help
editFor questions about the plugin, open a topic in the Discuss forums. For bugs or feature requests, open an issue in Github.
Description
editGenerate synthetic log events.
This plugin generates a stream of synthetic events that can be used to test the correctness or performance of a Logstash pipeline.
Java_generator Input Configuration Options
editThis plugin supports the following configuration options plus the Common options described later.
Setting | Input type | Required |
---|---|---|
No |
||
No |
||
No |
||
No |
||
No |
Also see Common options for a list of options supported by all input plugins.
count
edit- Value type is number
-
Default value is
0
Sets the number of events that should be generated.
The default, 0
, means generate an unlimited number of events.
eps
edit- Value type is number
-
Default value is
0
Sets the rate at which events should be generated. Fractional values may be specified. For
example, a rate of 0.25
means that one event will be generated every four seconds.
The default, 0
, means generate events as fast as possible.
lines
edit- Value type is array
- There is no default value for this setting.
The lines to emit, in order. This option overrides the message setting if it has also been specified.
Example:
input { java_generator { lines => [ "line 1", "line 2", "line 3" ] # Emit all lines 2 times. count => 2 } }
The above will emit a series of three events line 1
then line 2
then line 3
two times for a total of 6 events.
message
edit- Value type is string
-
Default value is
"Hello world!"
The message string to use in the event.
threads
edit- Value type is number
-
Default value is
1
Increasing the number of generator threads up to about the number of CPU cores generally increases overall event
throughput. The count
, eps
, and lines
settings all apply on a per-thread basis. In other words, each thread
will emit the number of events specified in the count
setting for a total of threads * count
events. Each thread
will emit events at the eps
rate for a total rate of threads * eps
, and each thread will emit each line specified
in the lines
option.
Common options
editThese configuration options are supported by all input plugins:
Setting | Input type | Required |
---|---|---|
No |
||
No |
||
No |
||
No |
||
No |
||
No |
codec
edit- Value type is codec
-
Default value is
"plain"
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.
enable_metric
edit- Value type is boolean
-
Default value is
true
Disable or enable metric logging for this specific plugin instance by default we record all the metrics we can, but you can disable metrics collection for a specific plugin.
id
edit- Value type is string
- There is no default value for this setting.
Add a unique ID
to the plugin configuration. If no ID is specified, Logstash will generate one.
It is strongly recommended to set this ID in your configuration. This is particularly useful
when you have two or more plugins of the same type, for example, if you have 2 java_generator inputs.
Adding a named ID in this case will help in monitoring Logstash when using the monitoring APIs.
input { java_generator { id => "my_plugin_id" } }
Variable substitution in the id
field only supports environment variables
and does not support the use of values from the secret store.
tags
edit- 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.
type
edit- 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.