couchdb_httpd_requests

#!/usr/bin/env node
// Munin plugin for CouchDB http requests

// Magic Markers for auto-configuration
// #%# family=auto
// #%# capabilities=autoconf suggest

var sys = require("sys")
  , fs = require("fs")
  , path = require("path")

fs.realpath(__filename, function(err, realpath) {
  require.paths.unshift(path.dirname(realpath) + "/vendor")

  var cradle = require("cradle")
    , conn = new(cradle.Connection)
    , mode = "fetch"

  // could be "config" or "autoconf" mode
  if (process.argv[2] !== undefined) mode = process.argv[2]

  if (mode === 'config') {
    sys.puts("graph_title CouchDB httpd requests")
    sys.puts("graph_args --base 1000")
    sys.puts("graph_vlabel requests / \${graph_period}")
    sys.puts("graph_category couchdb")
    sys.puts("requests.label requests")
    sys.puts("requests.type COUNTER")
    sys.puts("requests.min 0")
    sys.puts("requests.max 1000000")
    sys.puts("bulk_requests.label bulk requests")
    sys.puts("bulk_requests.type COUNTER")
    sys.puts("bulk_requests.min 0")
    sys.puts("bulk_requests.max 1000000")
    sys.puts("view_reads.label view reads")
    sys.puts("view_reads.type COUNTER")
    sys.puts("view_reads.min 0")
    sys.puts("view_reads.max 1000000")
  } else {
    conn.stats(function(err, stats) {
      if (mode === 'autoconf') {
        if (!err) {
          sys.puts("yes")
        } else {
          sys.puts("no")
          process.exit(1)
        }
      } else {
        if (err || typeof stats.httpd.requests === "undefined") {
          sys.puts("requests.value U")
          sys.puts("bulk_requests.value U")
          sys.puts("view_reads.value U")
        } else {
          sys.puts("requests.value " + (stats.httpd.requests.mean || 0))
          sys.puts("bulk_requests.value " + (stats.httpd.bulk_requests.mean || 0))
          sys.puts("view_reads.value " + (stats.httpd.view_reads.mean || 0))
        }
      }
    })
  }
})