Class: Hive::Api

Inherits:
Object
  • Object
show all
Defined in:
lib/hive/api.rb

Overview

This ruby API works with hived-0.23.00 and other AppBase compatible upstreams. To access different API namespaces, use the following:

api = Hive::Api.new
api.get_dynamic_global_properties

The above example will make an instance that can access the condenser_api namespace. Alternatively, you may also create a direct instances with its full name, if you prefer:

api = Hive::CondenserApi.new
api.get_dynamic_global_properties

If you know the name of another API that is supported by the remote node, you can create an instance to that instead, for example:

api = Hive::MarketHistoryApi.new
api.get_volume

All known API by namespace:

  • AccountByKeyApi

  • AccountHistoryApi

  • BlockApi

  • DatabaseApi

  • FollowApi

  • Jsonrpc

  • MarketHistoryApi

  • NetworkBroadcastApi

  • TagsApi

  • WitnessApi

Also see: / Complete API Definitions

Direct Known Subclasses

BlockApi, Bridge, Jsonrpc

Constant Summary collapse

DEFAULT_RPC_CLIENT_CLASS =

Use this for debugging naive thread handler. DEFAULT_RPC_CLIENT_CLASS = RPC::HttpClient

RPC::ThreadSafeHttpClient

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ Api

Returns a new instance of Api.



93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
 
# File 'lib/hive/api.rb', line 93

def initialize(options = {})
  @chain = options[:chain] || :hive
  @error_pipe = options[:error_pipe] || STDERR
  @api_name = self.class.api_name ||= :condenser_api
  
  @rpc_client = if !!options[:rpc_client]
    options[:rpc_client]
  else
    rpc_client_class = self.class.default_rpc_client_class
    rpc_client_class.new(options.merge(api_name: @api_name))
  end
  
  if @api_name == :jsonrpc
    Api::jsonrpc = self
  else
    # Note, we have to wait until initialize to check this because we don't
    # have access to instance options until now.
    
    Api::jsonrpc = Jsonrpc.new(options)
    
    @methods = begin
      Api::jsonrpc(rpc_client.uri.to_s).get_api_methods
    rescue => e
      Fallback::API_METHODS
    end
    
    if Jsonrpc::UNLISTED_APIS.include? @api_name
      @methods ||= {}
      @methods[@api_name] ||= []
      @methods[@api_name] += Fallback::API_METHODS[@api_name]
      @methods[@api_name] = @methods[@api_name].uniq
    end
    
    unless !!@methods[@api_name]
      raise UnknownApiError, "#{@api_name} (known APIs: #{@methods.keys.join(' ')})"
    end
    
    @methods = @methods[@api_name]
  end
    
  @try_count = 0
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(m, *args, &block) ⇒ Object (private) 



175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
 
# File 'lib/hive/api.rb', line 175

def method_missing(m, *args, &block)
  super unless respond_to_missing?(m)
  
  rpc_method_name = "#{@api_name}.#{m}"
  rpc_args = case @api_name
  when :condenser_api then args
  when :jsonrpc then args.first
  else
    expected_args = signature(rpc_method_name).args || []
    expected_args_key_string = if expected_args.size > 0
      " (#{args_keys_to_s(rpc_method_name)})"
    end
    expected_args_size = expected_args.size
    
    begin
      args = args.first.to_h
      args_size = args.size
      
      # Some argument are optional, but if the arguments passed are greater
      # than the expected arguments size, we can warn.
      if args_size > expected_args_size
        if rpc_method_name == 'account_history_api.get_account_history' && expected_args_size == 3 && args_size == 6
          # TODO Remove this condition if they ever fix this issue:
          # https://gitlab.syncad.com/hive/hive/-/issues/100
        elsif rpc_method_name == 'account_history_api.get_ops_in_block' && expected_args_size == 2 && args_size == 3
          # TODO Remove this condition if they ever fix this issue:
          # https://gitlab.syncad.com/hive/hive/-/issues/100
        elsif rpc_method_name == 'account_history_api.enum_virtual_ops' && expected_args_size == 2 && args_size == 3
          # TODO Remove this condition if they ever fix this issue:
          # https://gitlab.syncad.com/hive/hive/-/issues/100
        else
          @error_pipe.puts "Warning #{rpc_method_name} expects arguments: #{expected_args_size}, got: #{args_size}"
        end
      end
    rescue NoMethodError => e
      error = Hive::ArgumentError.new("#{rpc_method_name} expects arguments: #{expected_args_size}", e)
      raise error
    rescue => e
      raise UnknownError.new("#{rpc_method_name} unknown error.", e)
    end
    
    args
  end
  
  response = rpc_client.rpc_execute(@api_name, m, rpc_args)
  
  if !!block
    case response
    when Hashie::Mash then yield response.result, response.error, response.id
    when Hashie::Array
      response.each do |r|
        r = Hashie::Mash.new(r)
        yield r.result, r.error, r.id
      end
    else; yield response
    end
  else
    return response
  end
end

Instance Attribute Details

#chain ⇒ Object

Returns the value of attribute chain.



39
40
41
 
# File 'lib/hive/api.rb', line 39

def chain
  @chain
end

#methods ⇒ Object

Returns the value of attribute methods.



39
40
41
 
# File 'lib/hive/api.rb', line 39

def methods
  @methods
end

#rpc_client ⇒ Object

Returns the value of attribute rpc_client.



39
40
41
 
# File 'lib/hive/api.rb', line 39

def rpc_client
  @rpc_client
end

Class Method Details

.api_class_name ⇒ Object 



56
57
58
 
# File 'lib/hive/api.rb', line 56

def self.api_class_name
  @api_name.to_s.split('_').map(&:capitalize).join
end

.api_name ⇒ Object 



52
53
54
 
# File 'lib/hive/api.rb', line 52

def self.api_name
  @api_name
end

.api_name=(api_name) ⇒ Object 



45
46
47
48
49
50
 
# File 'lib/hive/api.rb', line 45

def self.api_name=(api_name)
  @api_name = api_name.to_s.
    gsub(/([A-Z]+)([A-Z][a-z])/,'\1_\2').
    gsub(/([a-z\d])([A-Z])/,'\1_\2').
    tr('-', '_').downcase.to_sym
end

.default_rpc_client_class ⇒ Object

Override this if you want to just use your own client. Otherwise, inject the default using:

Hive::Api.register default_rpc_client_class: MyClient



77
78
79
80
81
82
83
 
# File 'lib/hive/api.rb', line 77

def self.default_rpc_client_class
  if !!@injected_dependencies && !!@injected_dependencies[:default_rpc_client_class]
    @injected_dependencies[:default_rpc_client_class]
  else
    DEFAULT_RPC_CLIENT_CLASS
  end
end

.jsonrpc(url = nil) ⇒ Object 



65
66
67
68
69
70
71
 
# File 'lib/hive/api.rb', line 65

def self.jsonrpc(url = nil)
  if @jsonrpc.size < 2 && url.nil?
    @jsonrpc.values.first
  else
    @jsonrpc[url]
  end
end

.jsonrpc=(jsonrpc, url = nil) ⇒ Object 



60
61
62
63
 
# File 'lib/hive/api.rb', line 60

def self.jsonrpc=(jsonrpc, url = nil)
  @jsonrpc ||= {}
  @jsonrpc[url || jsonrpc.rpc_client.uri.to_s] = jsonrpc
end

.register(register) ⇒ Object

Used for dependency injection. Currently, the only key supported is:

‘default_rpc_client_class`



88
89
90
91
 
# File 'lib/hive/api.rb', line 88

def self.register(register)
  @injected_dependencies ||= {}
  @injected_dependencies = @injected_dependencies.merge register
end

Instance Method Details

#inspect ⇒ Object 



136
137
138
139
140
141
142
143
144
145
146
147
 
# File 'lib/hive/api.rb', line 136

def inspect
  properties = %w(chain methods).map do |prop|
    if !!(v = instance_variable_get("@#{prop}"))
      case v
      when Array then "@#{prop}=<#{v.size} #{v.size == 1 ? 'element' : 'elements'}>" 
      else; "@#{prop}=#{v}" 
      end
    end
  end.compact.join(', ')
  
  "#<#{self.class.api_class_name} [#{properties}]>"
end