Class: DevCycle::ConfigManager

Inherits:
Object
  • Object
show all
Extended by:
T::Sig
Defined in:
lib/devcycle-ruby-server-sdk/localbucketing/config_manager.rb

Instance Method Summary collapse

Constructor Details

#initialize(sdkKey, local_bucketing, wait_for_init) ⇒ ConfigManager

Returns a new instance of ConfigManager.



16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
 
# File 'lib/devcycle-ruby-server-sdk/localbucketing/config_manager.rb', line 16

def initialize(sdkKey, local_bucketing, wait_for_init)
  @first_load = true
  @config_version = "v1"
  @local_bucketing = local_bucketing
  @sdkKey = sdkKey
  @config_e_tag = ""
  @logger = local_bucketing.options.logger
  @polling_enabled = true
  @max_config_retries = 2

  @config_poller = Concurrent::TimerTask.new({
      execution_interval: @local_bucketing.options.config_polling_interval_ms.fdiv(1000)
    }) do |task|
    fetch_config
  end

  t = Thread.new { initialize_config }
  t.join if wait_for_init
end

Instance Method Details

#close ⇒ Object 



105
106
107
108
 
# File 'lib/devcycle-ruby-server-sdk/localbucketing/config_manager.rb', line 105

def close
  @config_poller.shutdown if @config_poller.running?
  nil
end

#fetch_config ⇒ Object 



47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
 
# File 'lib/devcycle-ruby-server-sdk/localbucketing/config_manager.rb', line 47

def fetch_config
  return unless @polling_enabled

  req = Typhoeus::Request.new(
    get_config_url,
    headers: {
      Accept: "application/json",
    })

  if @config_e_tag != ""
    req.options[:headers]['If-None-Match'] = @config_e_tag
  end

  @max_config_retries.times do
    resp = req.run
    case resp.code
    when 304
      @logger.debug("Config not modified, using cache, etag: #{this.configEtag}")
      return
    when 200
      set_config(resp.body, resp.headers['Etag'])
      return
    when 403
      stop_polling
      @logger.error("Failed to download DevCycle config; Invalid SDK Key.")
      return
    when 500...599
      @logger.error("Failed to download DevCycle config. Status: #{resp.code}")
    else
      stop_polling
      @logger.error("Unexpected response code - DevCycle Response: #{Oj.dump(resp)}")
      return
    end
  end

  nil
end

#get_config_url ⇒ Object 



95
96
97
98
 
# File 'lib/devcycle-ruby-server-sdk/localbucketing/config_manager.rb', line 95

def get_config_url
  configBasePath = @local_bucketing.options.config_cdn_uri
  "#{configBasePath}/config/#{@config_version}/server/#{@sdkKey}.json"
end

#initialize_config ⇒ Object 



36
37
38
39
40
41
42
43
44
45
 
# File 'lib/devcycle-ruby-server-sdk/localbucketing/config_manager.rb', line 36

def initialize_config
  begin
    fetch_config
    @config_poller.execute if @polling_enabled
  rescue => e
    @logger.error("DVC Error Initializing Config: #{e.message}")
  ensure
    @local_bucketing.initialized = true
  end
end

#set_config(config, etag) ⇒ Object 



85
86
87
88
89
90
91
92
93
 
# File 'lib/devcycle-ruby-server-sdk/localbucketing/config_manager.rb', line 85

def set_config(config, etag)
  if !JSON.parse(config).is_a?(Hash)
    raise("Invalid JSON body parsed from Config Response")
  end

  @local_bucketing.store_config(config)
  @config_e_tag = etag
  @local_bucketing.has_config = true
end

#stop_polling ⇒ Object 



100
101
102
103
 
# File 'lib/devcycle-ruby-server-sdk/localbucketing/config_manager.rb', line 100

def stop_polling
  @polling_enabled = false
  @config_poller.shutdown if @config_poller.running?
end