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# Licensed to Elasticsearch B.V. under one or more contributor
# license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright
# ownership. Elasticsearch B.V. licenses this file to you under
# the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
# An example of using the percolator with Elasticsearch 5.x and higher
# ====================================================================
#
# See:
#
# * https://www.elastic.co/blog/elasticsearch-percolator-continues-to-evolve
# * https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-percolate-query.html
require 'ansi'
require 'elasticsearch'
client = Elasticsearch::Client.new log: true
client.transport.logger.formatter = proc do |severity, datetime, progname, msg| "\e[2m#{msg}\e[0m\n" end
# Delete the indices used for the example
#
client.indices.delete index: ['my-alerts','my-messages'], ignore: 404
# Set up the mapping for the index
#
# * Register the "percolate" type for the `query` field
# * Set up the mapping for the `message` field
#
client.indices.create index: 'my-alerts',
body: {
mappings: {
properties: {
query: {
type: 'percolator'
},
message: {
type: 'text'
}
}
}
}
# Store alert for messages containing "foo"
#
client.index index: 'my-alerts',
type: 'doc',
id: 'alert-1',
body: { query: { match: { message: 'foo' } } }
# Store alert for messages containing "bar"
#
client.index index: 'my-alerts',
type: 'doc',
id: 'alert-2',
body: { query: { match: { message: 'bar' } } }
# Store alert for messages containing "baz"
#
client.index index: 'my-alerts',
type: 'doc',
id: 'alert-3',
body: { query: { match: { message: 'baz' } } }
client.indices.refresh index: 'my-alerts'
# Percolate a piece of text against the queries
#
results = client.search index: 'my-alerts', body: {
query: {
percolate: {
field: 'query',
document: {
message: "Foo Bar"
}
}
}
}
puts "Which alerts match the text 'Foo Bar'?".ansi(:bold),
'> ' + results['hits']['hits'].map { |r| r['_id'] }.join(', ')
client.index index: 'my-messages', type: 'doc', id: 123, body: { message: "Foo Bar Baz" }
client.indices.refresh index: 'my-messages'
results = client.search index: 'my-alerts', body: {
query: {
percolate: {
field: 'query',
index: 'my-messages',
type: 'doc',
id: 123
}
}
}
puts "Which alerts match the document [my-messages/doc/123]?".ansi(:bold),
'> ' + results['hits']['hits'].map { |r| r['_id'] }.join(', ')
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