Class: HQ::CheckSite::Script

Inherits:
Tools::CheckScript
  • Object
show all
Defined in:
lib/hq/check-site/script.rb

Defined Under Namespace

Classes: CustomHTTP

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Script 



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# File 'lib/hq/check-site/script.rb', line 44

def initialize
  super
  @name = "Site"
end

Instance Method Details

#check_address(address) ⇒ Object 



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# File 'lib/hq/check-site/script.rb', line 145

def check_address address

  cookies = {}

  begin

    # open http connection

    http =
      CustomHTTP.new \
        @base_url.host,
        @base_url.port

    http.override_address = address

    http.open_timeout = @timeout_time
    http.read_timeout = @timeout_time
    http.use_ssl = @base_url.scheme == "https"
    http.start

    success = true

    @config_elem.find("step").each do
      |step_elem|

      success =
        check_step http, cookies, step_elem

      break unless success

    end

    @successes += 1 if success

  rescue Errno::ECONNREFUSED

    @failures += 1

  rescue Timeout::Error

    @failures += 1

  end

end

#check_step(http, cookies, step_elem) ⇒ Object 



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# File 'lib/hq/check-site/script.rb', line 191

def check_step http, cookies, step_elem

  @postscript << "performing step #{step_elem["name"]}"

  request_elem = step_elem.find_first "request"
  response_elem = step_elem.find_first "response"

  # create request

  path = @base_url.path + (request_elem["path"] || "")

  req =
    case request_elem["method"] || "get"
    when "get"
      Net::HTTP::Get.new path
    when "post"
      Net::HTTP::Post.new path
    else
      raise "error"
    end

  # set standard headers

  req["host"] = @base_url.host
  req["user-agent"] = "hq check-site"

  unless cookies.empty?
    req["cookie"] =
      cookies.map {
        |name, value|
        "#{name}=#{value}"
      }.join ", "
  end

  # set custom headers

  request_elem.find("header").each do
    |header_elem|
    req[header_elem["name"]] = header_elem["value"]
  end

  # set http auth

  if request_elem["username"]
    req.basic_auth \
      request_elem["username"],
      request_elem["password"]
  end

  # set form data

  form_data = {}

  request_elem.find("param").each do |param_elem|
    form_data[param_elem["name"]] = param_elem["value"]
  end

  req.set_form_data form_data

  # make request

  start_time = Time.now

  res = http.request req

  end_time = Time.now
  duration = end_time - start_time

  # save cookies

  if res["set-cookie"]
    WEBrick::Cookie.parse_set_cookies(res["set-cookie"]).each do
      |cookie|
      cookies[cookie.name] = cookie.value
    end
  end

  # process results

  @worst = duration if @worst == nil
  @worst = duration if duration > @worst

  debug "REQUEST #{req.path}"
  req.each { |k,v| debug "  #{k}: #{v}" }
  debug "RESPONSE #{res.code} #{res.message}"
  res.each { |k,v| debug "  #{k}: #{v}" }

  if res.code != "200"

    debug "EXPECTED response code 200"

    if @report_error == nil &&
      res.body =~ /#{response_elem["report-error"]}/

      @report_error = $1

    end

    @error_codes << res.code
    return false

  elsif response_elem["body-regex"] &&
    res.body !~ /#{response_elem["body-regex"]}/

    debug "EXPECTED body to match #{response_elem["body-regex"]}"

    if @opts[:debug]
      debug "BODY"
      debug res.body.gsub(/^/, "  ")
    end

    @mismatches += 1
    return false

  end

  return true

end

#debug(message) ⇒ Object 



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# File 'lib/hq/check-site/script.rb', line 311

def debug message
  @postscript << message
end

#perform_checks ⇒ Object 



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# File 'lib/hq/check-site/script.rb', line 90

def perform_checks

  addresses = Resolv.getaddresses @base_url.host

  @worst = nil
  @successes = 0
  @failures = 0
  @mismatches = 0
  @error_codes = []
  @report_error = nil

  addresses.each do
    |address|

    check_address address

  end

  errors = @error_codes.size
  total = @successes + errors + @failures + @mismatches

  if total == 0
    critical "unable to resolve #{@base_url.host}"
  else
    message "#{total} hosts found"

    critical "#{@failures} uncontactable" \
      if @failures > 0

    critical "#{errors} errors (#{@error_codes.uniq.sort.join ","})" \
      if errors > 0

    critical "#{@mismatches} mismatches" \
      if @mismatches > 0

    if @worst != nil

      if @worst >= @critical_time
        critical "#{@worst}s time (critical is #{@critical_time})"
      elsif @worst >= @warning_time
        warning "#{@worst}s time (warning is #{@warning_time})"
      else
        message "#{@worst}s time"
      end

    end

    if @report_error != nil
      message "response '#{@report_error}'"
    end

  end

end

#prepare ⇒ Object 



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# File 'lib/hq/check-site/script.rb', line 66

def prepare

  config_doc =
    XML::Document.file @opts[:config]

  @config_elem =
    config_doc.root

  @timings_elem =
    @config_elem.find_first "timings"

  @critical_time =
    @timings_elem["critical"].to_f

  @warning_time =
    @timings_elem["warning"].to_f

  @timeout_time =
    @timings_elem["timeout"].to_f

  @base_url = URI.parse @config_elem["base-url"]

end

#process_args ⇒ Object 



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# File 'lib/hq/check-site/script.rb', line 49

def process_args

  @opts, @args =
    Tools::Getopt.process @args, [

      { :name => :config,
        :required => true },

      { :name => :debug,
        :boolean => true },

    ]

  @args.empty? or raise "Extra args on command line"

end