class AccessWatch::Logger

Constants

MEMORY_CONVERSIONS

Attributes

client[R]

Public Class Methods

new(config) click to toggle source
# File lib/access_watch/logger.rb, line 5
def initialize(config)
  @client = AccessWatch::Client.new(config)
end

Public Instance Methods

extract_http_headers(headers) click to toggle source
# File lib/access_watch/logger.rb, line 27
def extract_http_headers(headers)
  headers.reduce({}) do |hash, (name, value)|
    if name.index("HTTP_") == 0 && name != "HTTP_COOKIE"
      hash[format_header_name(name)] = value
    end
    hash
  end
end
format_header_name(name) click to toggle source
# File lib/access_watch/logger.rb, line 36
def format_header_name(name)
  name.sub(/^HTTP_/, '').sub("_", " ").titleize.sub(" ", "-")
end
record(request, response) click to toggle source
# File lib/access_watch/logger.rb, line 9
def record(request, response)
  post_request(
    time: Time.now.utc,
    address: request.remote_ip,
    request: {
      protocol: request.headers["Version"],
      method: request.method,
      scheme: URI(request.original_url).scheme,
      host: request.host,
      port: request.port,
      url: request.original_fullpath,
      headers: extract_http_headers(request.headers)
    },
    response: {status: response.status},
    context: {memory_usage: memory_usage_in_bytes},
  )
end

Private Instance Methods

linux_process_memory_usage_in_bytes(pid) click to toggle source
# File lib/access_watch/logger.rb, line 70
def linux_process_memory_usage_in_bytes(pid)
  return unless status = linux_process_status(pid)
  value, unit = status["VmRSS"].split
  value.to_i * MEMORY_CONVERSIONS[unit.downcase]
end
linux_process_status(pid) click to toggle source
# File lib/access_watch/logger.rb, line 58
def linux_process_status(pid)
  path = "/proc/#{pid}/status"
  return unless File.readable?(path)
  File.read(path).split("\n").reduce({}) do |hash, line|
    name, value = line.split(":")
    hash[name] = value.strip
    hash
  end
end
memory_usage_in_bytes() click to toggle source
# File lib/access_watch/logger.rb, line 54
def memory_usage_in_bytes
  linux_process_memory_usage_in_bytes(Process.pid)
end
post_async(path, data) click to toggle source
# File lib/access_watch/logger.rb, line 50
def post_async(path, data)
  Thread.new { client.post(path, data) }
end
post_request(data) click to toggle source

Private methods ###

# File lib/access_watch/logger.rb, line 46
def post_request(data)
  post_async("log".freeze, data)
end