Class: LogStash::Inputs::Elasticsearch

Inherits:
Base
  • Object
show all
Defined in:
lib/logstash/inputs/elasticsearch.rb

Overview

Read from an Elasticsearch cluster, based on search query results. This is useful for replaying test logs, reindexing, etc.

Example:

source,ruby

input {

# Read all documents from Elasticsearch matching the given query
elasticsearch {
  hosts => "localhost"
  query => '{ "query": { "match": { "statuscode": 200 } } }'
}

}

This would create an Elasticsearch query with the following format:

source,json

curl ‘localhost:9200/logstash-*/_search?&scroll=1m&size=1000’ -d ‘{

"query": {
  "match": {
    "statuscode": 200
  }
}

}‘

Instance Method Summary collapse

Instance Method Details

#register ⇒ Object 



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# File 'lib/logstash/inputs/elasticsearch.rb', line 108

def register
  require "elasticsearch"

  @options = {
    :index => @index,
    :body => @query,
    :scroll => @scroll,
    :size => @size
  }

  @options[:search_type] = 'scan' if @scan

  transport_options = {}

  if @user && @password
    token = Base64.strict_encode64("#{@user}:#{@password.value}")
    transport_options[:headers] = { :Authorization => "Basic #{token}" }
  end

  hosts = if @ssl then
    @hosts.map do |h|
      host, port = h.split(":")
      { :host => host, :scheme => 'https', :port => port }
    end
  else
    @hosts
  end

  if @ssl && @ca_file
    transport_options[:ssl] = { :ca_file => @ca_file }
  end

  @client = Elasticsearch::Client.new(:hosts => hosts, :transport_options => transport_options)
end

#run(output_queue) ⇒ Object 



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# File 'lib/logstash/inputs/elasticsearch.rb', line 143

def run(output_queue)
  # get first wave of data
  r = @client.search(@options)

  # since 'scan' doesn't return data on the search call, do an extra scroll
  if @scan
    r = process_next_scroll(output_queue, r['_scroll_id'])
    has_hits = r['has_hits']
  else # not a scan, process the response
    r['hits']['hits'].each { |hit| push_hit(hit, output_queue) }
    has_hits = r['hits']['hits'].any?
  end

  while has_hits && !stop?
    r = process_next_scroll(output_queue, r['_scroll_id'])
    has_hits = r['has_hits']
  end
end