Module: EsImporter
- Extended by:
- EsImporter
- Included in:
- EsImporter
- Defined in:
- lib/es_importer.rb,
lib/es_importer/version.rb
Constant Summary collapse
- VERSION =
"0.5.0"
Instance Method Summary collapse
- #_deep_transform_keys_in_object(object, &block) ⇒ Object
-
#add_importer(importer) ⇒ Object
save importer.
-
#configure(uri, logger: nil) ⇒ Object
configure state and return es client.
-
#create_index!(index) ⇒ Object
create index.
-
#delete_index!(index) ⇒ Object
delete index.
-
#import(index, documents) ⇒ Object
import documents.
- #import_in_bulk(index, documents) ⇒ Object
-
#transform_document(index, document) ⇒ Object
transform document using converters.
-
#transport ⇒ Object
init ransport.
Instance Method Details
#_deep_transform_keys_in_object(object, &block) ⇒ Object
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# File 'lib/es_importer.rb', line 210 def _deep_transform_keys_in_object(object, &block) case object when Hash object.each_with_object({}) do |(key, value), result| result[yield(key)] = _deep_transform_keys_in_object(value, &block) end when Array object.map { |e| _deep_transform_keys_in_object(e, &block) } else object end end |
#add_importer(importer) ⇒ Object
save importer
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# File 'lib/es_importer.rb', line 41 def add_importer(importer) @importers.update(importer) end |
#configure(uri, logger: nil) ⇒ Object
configure state and return es client
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# File 'lib/es_importer.rb', line 9 def configure(uri, logger: nil) @importers = {} @logger = logger @es_uri = uri @client = Elasticsearch::Client.new transport: transport end |
#create_index!(index) ⇒ Object
create index
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# File 'lib/es_importer.rb', line 46 def create_index!(index) @logger&.debug("Creating #{index} index at #{@es_uri} ...") mapping = @importers.dig(index, :mapping) keywords = @importers.dig(index, :keywords) type_name = index.to_s.chomp('s') body = { # add mapping mappings: { type_name => { dynamic: false, properties: mapping.reduce({}) do |a, (k, v)| # field with only type def, ie. mapping: {user_id: :text} if v.kind_of?(Symbol) field_def = {type: v} # field with ull def, ie. mapping: {user_id: {type: :text, analyzer: :my_analyzer}} elsif v.kind_of?(Hash) field_def = v end # optional keywords field_def.update(keywords&.include?(k) ? {fields: {keyword: {type: :keyword}}} : {}) if keywords # set field definition a.update(k => field_def) end } } } # merge settings if its set settings = @importers.dig(index, :settings) body.update(settings: settings) if settings # create index @client.indices.create index: index, body: body rescue => error @logger&.debug("Error creating #{index} index. #{error.class}: #{error.}") raise end |
#delete_index!(index) ⇒ Object
delete index
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# File 'lib/es_importer.rb', line 92 def delete_index!(index) @logger&.debug("Deleting #{index} index at #{@es_uri} ...") @client.indices.delete index: index rescue => error @logger&.debug("Error deleting #{index} index. #{error.class}: #{error.}") raise end |
#import(index, documents) ⇒ Object
import documents
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# File 'lib/es_importer.rb', line 143 def import(index, documents) # accept single document documents = [documents] if documents.is_a?(Hash) # import stats init start_time = Time.now imported = {count: 0} failed = {count: 0, items: []} # insert into elastic documents.each_with_index do |document, i| # transform document transformed_document = transform_document(index, document) # save it into index begin @client.index index: index, type: index.to_s.chomp('s'), id: transformed_document['es_id'], body: transformed_document imported[:count] +=1 rescue => e if @logger&.debug? @logger.debug(e.class) @logger.debug(e.) end failed[:count] +=1 failed[:items] << {id: transformed_document['es_id'], error: e.} end end # print import statistics if @logger&.debug? @logger.debug(">>> #{index} import statistics") @logger.debug("Imported: #{imported}") @logger.debug("Failed: #{failed}") @logger.debug("Time spent: #{Time.now - start_time} sec") end # return stats {imported: imported, failed: failed} end |
#import_in_bulk(index, documents) ⇒ Object
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# File 'lib/es_importer.rb', line 185 def import_in_bulk(index, documents) # import stats init start_time = Time.now # transform documents and build bulk payload transformed_documents_for_bulk = documents.map do |document| transformed_document = transform_document(index, document) es_id = transformed_document.delete('es_id') {index: { _index: index, _type: index.to_s.chomp('s'), _id: es_id, data: transformed_document}} end # import resp = @client.bulk body: transformed_documents_for_bulk # print import statistics if @logger&.debug? @logger.debug(">>> #{index} import statistics") @logger.debug("Time spent: #{Time.now - start_time} sec") end # return deserialized es response resp end |
#transform_document(index, document) ⇒ Object
transform document using converters
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# File 'lib/es_importer.rb', line 101 def transform_document(index, document) # convert all keys to strings document = _deep_transform_keys_in_object(document, &:to_s) # convert keys or add new ones @importers.dig(index, :converters)&.each do |keys, converter| keys = keys.split('.') # transform existing key if value = document.dig(*keys) document[keys.first] = converter.call(value, document) if keys.size == 1 # lvl 1 keys.first(keys.size-1).reduce(document, :fetch)[keys.last] = converter.call(value, document) if keys.size > 1 # lvl > 1 # add new key else missing_key_index = nil keys.each_with_index do |key, i| missing_key_index = i and break unless document.dig(*keys.first(i + 1)) end tail_keys = keys[missing_key_index..-1] tail_hash = keys[0...missing_key_index].reduce(document, :fetch) tail_keys.each_with_index do |key, i| tail_hash[tail_keys[i]] = tail_keys.size == i + 1 ? converter.call(document) : {} tail_hash = tail_hash[tail_keys[i]] end end end # add elastic id id_key = @importers.dig(index, :id_key) generated_id = document[id_key.to_s] if id_key.is_a?(Symbol) # single key generated_id = id_key.reduce([]){|acc, key| acc << document[key.to_s]}.join('-') if id_key.is_a?(Array) # composite key document['es_id'] = generated_id # transformed document document end |
#transport ⇒ Object
init ransport
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# File 'lib/es_importer.rb', line 17 def transport # parse uri for host configuration es_uri = URI.parse(@es_uri) host_config = {host: es_uri.host, port: es_uri.port, scheme: es_uri.scheme} # aws support if is_amazon_uri = es_uri.host.include?('es.amazonaws.com') require 'aws-sdk-dynamodb' require 'faraday_middleware/aws_sigv4' aws_region = es_uri.host.split('.')[-4] credentials = Aws::DynamoDB::Client.new(region: aws_region).instance_eval{@config.credentials} end # configure client faraday_config = lambda do |faraday| faraday.request :aws_sigv4, credentials: credentials, service: 'es', region: aws_region if is_amazon_uri faraday.headers['Content-Type'] = 'application/json' faraday.adapter :typhoeus end Elasticsearch::Transport::Transport::HTTP::Faraday.new(hosts: [host_config], &faraday_config) end |