Class: LlmCostTracker::PriceSync::Fetcher

Inherits:
Object
  • Object
show all
Defined in:
lib/llm_cost_tracker/price_sync/fetcher.rb

Defined Under Namespace

Classes: Response

Constant Summary collapse

USER_AGENT = 
"llm_cost_tracker price sync"
MAX_REDIRECTS = 
5
OPEN_TIMEOUT = 
5
READ_TIMEOUT = 
10
WRITE_TIMEOUT = 
10

Instance Method Summary collapse

Instance Method Details

#get(url, etag: nil, redirects: 0) ⇒ Object 



23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
 
# File 'lib/llm_cost_tracker/price_sync/fetcher.rb', line 23

def get(url, etag: nil, redirects: 0)
  raise Error, "Too many redirects while fetching #{url}" if redirects > MAX_REDIRECTS

  uri = URI.parse(url)
  request = Net::HTTP::Get.new(uri)
  request["User-Agent"] = USER_AGENT
  request["If-None-Match"] = etag if etag

  response = Net::HTTP.start(
    uri.host,
    uri.port,
    use_ssl: uri.scheme == "https",
    open_timeout: OPEN_TIMEOUT,
    read_timeout: READ_TIMEOUT,
    write_timeout: WRITE_TIMEOUT
  ) do |http|
    http.request(request)
  end

  case response
  when Net::HTTPSuccess
    build_response(response, not_modified: false)
  when Net::HTTPNotModified
    build_response(response, body: nil, not_modified: true)
  when Net::HTTPRedirection
    location = response["location"]
    raise Error, "Redirect without location while fetching #{url}" if location.nil? || location.empty?

    get(URI.join(url, location).to_s, etag: etag, redirects: redirects + 1)
  else
    raise Error, "Unable to fetch #{url}: HTTP #{response.code}"
  end
rescue SocketError, SystemCallError, Timeout::Error => e
  raise Error, "Unable to fetch #{url}: #{e.class}: #{e.message}"
end