Class: AgnosticBackend::Elasticsearch::Client

Inherits:
Object
  • Object
show all
Defined in:
lib/agnostic_backend/elasticsearch/client.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(endpoint:) ⇒ Client

Returns a new instance of Client.



9
10
11
12
 
# File 'lib/agnostic_backend/elasticsearch/client.rb', line 9

def initialize(endpoint:)
  @endpoint = endpoint
  @connection = Faraday::Connection.new(url: endpoint)
end

Instance Attribute Details

#endpoint ⇒ Object (readonly)

Returns the value of attribute endpoint.



7
8
9
 
# File 'lib/agnostic_backend/elasticsearch/client.rb', line 7

def endpoint
  @endpoint
end

Instance Method Details

#describe_index_fields(index_name, type) ⇒ Object

returns an array of RemoteIndexFields (or nil)



15
16
17
18
19
20
21
22
23
24
25
26
27
28
 
# File 'lib/agnostic_backend/elasticsearch/client.rb', line 15

def describe_index_fields(index_name, type)
  response = send_request(:get, path: "#{index_name}/_mapping/#{type}")
  if response.success?
    body = ActiveSupport::JSON.decode(response.body) if response.body.present?
    return if body.blank?
    fields = body[index_name.to_s]["mappings"][type.to_s]["properties"]

    fields.map do |field_name, properties|
      properties = Hash[ properties.map{|k,v| [k.to_sym, v]} ]
      type = properties.delete(:type)
      AgnosticBackend::Elasticsearch::RemoteIndexField.new field_name, type, **properties
    end
  end
end

#send_request(http_method, path: "", body: nil) ⇒ Object

sends an HTTP request to the ES server (a) a Hash (in which case it will be encoded to JSON), or (b) a string (in which case it will be assumed to contain JSON data) returns a Faraday::Response instance



35
36
37
38
39
40
41
 
# File 'lib/agnostic_backend/elasticsearch/client.rb', line 35

def send_request(http_method, path: "", body: nil)
  body = ActiveSupport::JSON.encode(body) if body.is_a? Hash
  @connection.run_request(http_method.downcase.to_sym,
                          path.to_s,
                          body,
                          default_headers)
end