How to log an entire request (headers, body, etc) for a certain url?

logging, ruby, ruby-on-rails, ruby-on-rails-4

Solution

It looks like `request.headers` returns a hash, but in fact, it returns an instance of `Http::Headers` that doesn't have a `keys` method defined.

But a `Http::Headers` responds to `env` which returns the original env hash. Therefore, the following works:

http_request_header_keys = request.headers.env.keys.select do |header_name| 
  header_name.match("^HTTP.*")
end

Or you can just iterate over all key-value-pairs and copy them into another hash:

http_envs = {}.tap do |envs|
  request.headers.each do |key, value|
    envs[key] = value if key.downcase.starts_with?('http')
  end
end

logger.info <<-LOG.squish
  Received     #{request.method.inspect} 
  to           #{request.url.inspect} 
  from         #{request.remote_ip.inspect}.  
  Processing 
  with headers #{http_envs.inspect} 
  and params   #{params.inspect}"
LOG

To wrap this up:

around_action :log_everything, only: :index

def index
  # ...
end

private
def log_everything
  log_headers
  yield
ensure
  log_response
end

def log_headers
  http_envs = {}.tap do |envs|
    request.headers.each do |key, value|
      envs[key] = value if key.downcase.starts_with?('http')
    end
  end

  logger.info "Received #{request.method.inspect} to #{request.url.inspect} from #{request.remote_ip.inspect}. Processing with headers #{http_envs.inspect} and params #{params.inspect}"
end

def log_response
  logger.info "Responding with #{response.status.inspect} => #{response.body.inspect}"
end

Problem

I need to log all the requests including HTTP headers, bodies, etc to a certain url. I've tried this code: ``` def index global_request_logging end private def global_request_logging http_request_header_keys = request.headers.keys.select{|header_name| header_name.match("^HTTP.*")} http_request_headers = request.headers.select{|header_name, header_value| http_request_header_keys.index(header_name)} logger.info "Received #{request.method.inspect} to #{request.url.inspect} from #{request.remote_ip.inspect}. Processing with headers #{http_request_headers.inspect} and params #{params.inspect}" begin yield ensure logger.info "Responding with #{response.status.inspect} => #{response.body.inspect}" end end ``` But it said `request.headers` doesn't contain a method named `keys`. Also I figure there should be an easier way or standard to do it. Preferably, not to use a gem.

Original source