Class: GRI::Page

Inherits:
Object show all
Includes:
FormatHelper, Utils
Defined in:
lib/gri/page.rb

Constant Summary collapse

TZS = 
[['', 'localtime'], ['JST-9', 'JST-9'],
['EST5EDT', 'EST5EDT'], ['PST8PDT', 'PST8PDT'],
['Europe/London', 'Europe/London'],
['Europe/Amsterdam', 'Europe/Amsterdam'],
['Singapore', 'Singapore']]

Constants included from FormatHelper

FormatHelper::HTML_ESCAPE, FormatHelper::HTML_ESCAPE_ONCE_REGEXP

Instance Method Summary collapse

Methods included from FormatHelper

#check_box, #escape_once, #h, #hidden, #mk_query, #mk_tag, #popup_menu, #radio_button, #render, #td, #text_field, #to_scalestr, #u, #url_to

Methods included from Utils

get_prop, key_encode, load_records, parse_host_key, parse_key, search_records, update_ltsv_file, url_encode

Constructor Details

#initialize(options = {}) ⇒ Page

Returns a new instance of Page.



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# File 'lib/gri/page.rb', line 13

def initialize options={}
  @options = options
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/gri/page.rb', line 167

def call env
  req = GRI::Request.new env
  ENV['TZ'] = Config['tz'] if Config['tz']
  ENV['TZ'] = req.params['tz'].to_s unless req.params['tz'].blank?
  stime, etime, params = parse_request req

  cs = stime.strftime '%Y-%m-%d %H:%M:%S'
  ce = etime.strftime '%Y-%m-%d %H:%M:%S'

  if (tags = params.getvar('tag')) and (grp = params['grp'])
    gra_dir, = @options[:dirs]
    rrdpaths = tags.inject([]) {|a, tag|
      a += Dir.glob("#{gra_dir}/#{grp}/#{tag}/*.rrd")
    }
    r = File.basename rrdpaths.first
  else
    r = params['r'] || ''
  end
  host, @data_name, = parse_host_key r

  rs = params.getvar('r') || []
  @title, body_title, headlegend =
    mk_page_title @options[:dirs], rs, params

  defs_term = DEFS[:term]
  sym = params['tm'].blank? ? '' : params['tm'].intern
  terms = defs_term[sym] || defs_term[:default]
  body = render(Grapher.layout) {render template, binding}
  [200, {'Content-type' => 'text/html'}, [body]]
end

#mk_graph_tag(stime, etime, rs, params) ⇒ Object 



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# File 'lib/gri/page.rb', line 86

def mk_graph_tag stime, etime, rs, params
  if params['p'] == 't'
    if (tags = params.getvar 'tag')
      tags.map {|tag|
        mk_graph_tag_r stime, etime, [], params
      }.join("\n")
    else
      rs.map {|rname|
        mk_graph_tag_r stime, etime, [rname], params
      }.join("\n")
    end
  else
    mk_graph_tag_r stime, etime, rs, params
  end
end

#mk_graph_tag_r(stime, etime, rs, params) ⇒ Object 



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# File 'lib/gri/page.rb', line 102

def mk_graph_tag_r stime, etime, rs, params
  specs = DEFS.get_specs @data_name
  if (gr_specs = specs[:graph]) and gr_specs.size >= 1
    if params['p'] == 's' or params['p'] == 'v'
      (0..gr_specs.size-1).map {|gidx|
        gr_spec = gr_specs[gidx]
        pickup_re = gr_spec[3]
        dss = specs[:ds] || []
        dss = dss.grep pickup_re if pickup_re
        dss = dss.map {|ds| ds.split(',', 3)[1]}
        dss.map {|ds|
          param_str = mk_param_str stime, etime, rs, ds, params
          mk_graph_tag_s param_str, gidx
        }.join ''
      }.join ''
    else
      param_str = mk_param_str stime, etime, rs, nil, params
      (0..gr_specs.size-1).map {|gidx|
        mk_graph_tag_s param_str, gidx}.join ''
    end
  end
end

#mk_graph_tag_s(param_str, gidx = nil) ⇒ Object 



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# File 'lib/gri/page.rb', line 125

def mk_graph_tag_s param_str, gidx=nil
  param_str += "&g=#{gidx}" if gidx
  name = ENV['SCRIPT_NAME'] || ''
  "<a href=\"#{name}/#{h param_str}\">" +
    "<img ismap src=\"#{name}?#{h param_str}\"></a><br/>"
end

#mk_page_title(dirs, rs, params) ⇒ Object 



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# File 'lib/gri/page.rb', line 17

def mk_page_title dirs, rs, params
  jstr = (params['p'] == 't' or params['p'] == 'v') ? ', ' : ' + '
  descrs = []
  headlegend = nil

  if (tags = params.getvar('tag'))
    title = tags.compact.join jstr
    return title, title, headlegend
  end

  hosthash = {}
  for rname in rs
    host, key = rname.split('_', 2)
    hosthash[host] = true
    dir, records = search_records dirs, host
    if records and (prop = get_prop records[key])
      xhost = prop[:description] ? nil : host
      descr = (prop[:description] || prop[:name] || '?').to_s
      url = if params['grp'].blank?
              url_to("?r=#{rname}")
            else
              url_to("?grp=#{params['grp']}&r=#{rname}")
            end
      descrs.push [url, xhost, descr]
      unless headlegend or params['grp']
        ub = prop[:ub]
        if descr or ub
          name = prop[:name].to_s
          url = url_to("#{host}")
          headlegend = "<a href=\"#{h url}\">#{h host}</a>"
          headlegend << ' ' + name if descr
          #headlegend << ", MAX: #{to_scalestr ub, 1000}"
        end
      end
    end
  end

  html_title = descrs.map {|url, xhost, descr|
    if xhost and hosthash.size > 1
      xhost + ':' + descr
    else
      descr
    end
  }.join(jstr)
  body_title = descrs.map {|url, xhost, descr|
    if xhost and hosthash.size > 1
      "<a href=\"#{h url}\">#{h xhost}:#{h descr}</a>"
    else
      "<a href=\"#{h url}\">#{h descr}</a>"
    end
  }.join(jstr)

  return html_title, body_title, headlegend
end

#mk_param_str(stime, etime, rs, ds, params) ⇒ Object 



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# File 'lib/gri/page.rb', line 72

def mk_param_str stime, etime, rs, ds, params
  res = rs.map {|r| "r=#{u r}"}
  res << "grp=#{u params['grp']}" if params['grp']
  (tags = params.getvar('tag')) && tags.each {|tag| res << "tag=#{u tag}"}
  res << "stime=#{stime.to_i}"
  res << "etime=#{etime.to_i}" if etime.to_i.nonzero?
  res << "z=#{u params['z']}"
  res << "tz=#{u params['tz']}"
  res << "y=#{u params['y']}"
  res << "p=#{u params['p']}" if params['p']
  res << "ds=#{ds}" if ds
  res.join('&')
end

#parse_request(req) ⇒ Object 



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# File 'lib/gri/page.rb', line 136

def parse_request req
  now = Time.now
  if @options[:clicked]
    s = req.path_info[1..-1]
    req.query_string = s
    params = req.gparams
    z = params['z']
    width, = GRI::Graph::SIZE[z]

    canvas_x_offset = (Config['canvas-x-offset'] || 75).to_i
    imgx = @options[:imgx].to_i - canvas_x_offset
    imgy = @options[:imgy].to_i

    stime = params['stime'].to_i
    etime = params['etime'].to_i
    etime = (now + etime).to_i if etime <= 0
    stime = (etime + stime).to_i if stime <= 0
    stime = Time.at stime
    time = stime + ((Time.at(etime) - stime) / width) * imgx
    stime = Time.local(time.year, time.mon, time.day)
    etime = stime + 24*3600
    params['pt'] = 's'
  else
    params = req.gparams
    deftime = now - now.to_i % 60
    stime = parse_tstr(params['cs']) || deftime - 7*24*3600
    etime = parse_tstr(params['ce']) || deftime
  end
  return stime, etime, params
end

#parse_tstr(tstr) ⇒ Object 



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# File 'lib/gri/page.rb', line 132

def parse_tstr tstr
  (tstr and !tstr.empty?) ? Time.parse(tstr) : nil
end

#template ⇒ Object 



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# File 'lib/gri/page.rb', line 203

def template
  <<'EOS'
<span class="large"><%= body_title %></span><br/>
<% if params['z'] != 'll' and rs.size == 1 and headlegend and headlegend.size > 0 -%>
<span class="small"><%= headlegend %></span><br/>
<% end -%>
<br/>

<form enctype="application/x-www-form-urlencoded" method="get"
 action="<%= url_to '?' %>">
<% rs.each {|r| -%><%= hidden 'r', r %><% } -%>
<% tags and tags.each {|tag| -%><%= hidden 'tag', tag %><% } -%>
<% if params['grp'] then %><%= hidden 'grp', params['grp'] %><% end %>
<% tzs = TZS -%>
<% (tzs.assoc(params['tz']) || tzs[0])[2] = true -%>
TIMEZONE: <%= popup_menu('tz', nil, *tzs) %>
<% nflag, uflag = (params['y'] == 'u') ? [false, true] : [true, false] -%>
Y-axis scale:
<%= radio_button 'y', 'a', nflag %>auto
<%= radio_button 'y', 'u', uflag %>upper limit<br/>
<%= check_box 'pt', 's', (params['pt'] == 's') %>
<nobr>
from <%= text_field 'cs', cs, 20, 19, nil %>
to <%= text_field 'ce', ce, 20, 19, nil %>
</nobr>
<% zs = [['ss', 'SS'], ['s', 'S'], ['m', 'M'], ['l', 'L'], ['ll', 'LL']] -%>
<% (zs.assoc(params['z']) || zs[2])[2] = true -%>
Graph size: <%= popup_menu('z', nil, *zs) %>
<% tms = defs_term.sort_by {|k, v| v[0][1]}.map {|k,| [k.to_s, k.to_s]} -%>
<% (tms.assoc(params['tm']) || tms[1])[2] = true -%>
term: <%= popup_menu('tm', nil, *tms) %>
<br/>
<% if rs.size > 1 or grp -%>
<% c_ary = [['', 'sum'], ['s', 'stack'], ['v', 'overlay'], ['t', 'tile']] -%>
<% (c_ary.assoc(params['p']) || c_ary[0])[2] = true -%>
Composite type: <%= popup_menu('p', nil, *c_ary) %><br/>
<% end -%>
<input class="btn btn-primary btn-sm" type="submit" value="submit">
</form>

<% if params['pt'] == 's' -%>
<%= mk_graph_tag stime.to_i, etime.to_i, rs, params %>
<% else -%>
<% for label, int in terms -%>
<hr/><p>
<strong><%=h label %> Graph</strong><br/>
<%= mk_graph_tag -int, 0, rs, params %>
</p>
<% end -%>
<% end -%>

<hr/><!--%= RUBY_VERSION %-->
EOS
end