newrelic.js

/**
 * This file includes all of the configuration variables used by the Node.js
 * module. If there's a configurable element of the module and it's not
 * described in here, there's been a terrible mistake.
 */
exports.config = {
  /**
   * Array of application names.
   *
   * @env NEW_RELIC_APP_NAME
   */
  app_name : ['ScriptStats'],
  /**
   * The user's license key. Must be set by per-app configuration file.
   *
   * @env NEW_RELIC_LICENSE_KEY
   */
  license_key : '',
  /**
   * Hostname for the New Relic collector proxy.
   *
   * You shouldn't need to change this.
   *
   * @env NEW_RELIC_HOST
   */
  host : 'collector.newrelic.com',
  /**
   * The port on which the collector proxy will be listening.
   *
   * You shouldn't need to change this.
   *
   * @env NEW_RELIC_PORT
   */
  port : 80,
  /**
   * Proxy host to use to connect to the internet.
   *
   * FIXME: proxy support is completely untested.
   *
   * @env NEW_RELIC_PROXY_HOST
   */
  proxy_host : '',
  /**
   * Proxy port to use to connect to the internet.
   *
   * FIXME: proxy support is completely untested.
   *
   * @env NEW_RELIC_PROXY_PORT
   */
  proxy_port : '',
  /**
   * You may want more control over how the module is configured and want to
   * disallow the use of New Relic's server-side configuration. To do so, set
   * this parameter to true. Some configuration information is required to make
   * the module work properly with the rest of New Relic, but settings such as
   * apdex_t and capture_params will not be overridable by New Relic with this
   * setting in effect.
   *
   * @env NEW_RELIC_IGNORE_SERVER_CONFIGURATION
   */
  ignore_server_configuration : false,
  /**
   * Whether the module is enabled.
   *
   * @env NEW_RELIC_ENABLED
   */
  agent_enabled : true,
  /**
   * The default Apdex tolerating / threshold value for applications, in
   * seconds. The default for Node is apdexT to 100 milliseconds, which is
   * lower than New Relic standard, but Node.js applications tend to be more
   * latency-sensitive than most.
   *
   * @env NEW_RELIC_APDEX
   */
  apdex_t : 0.100,
  /**
   * Whether to capture parameters in the request URL in slow transaction
   * traces and error traces. Because this can pass sensitive data, it's
   * disabled by default. If there are specific parameters you want ignored,
   * use ignored_params.
   *
   * @env NEW_RELIC_CAPTURE_PARAMS
   */
  capture_params : false,
  /**
   * Array of parameters you don't want captured off request URLs in slow
   * transaction traces and error traces.
   *
   * @env NEW_RELIC_IGNORED_PARAMS
   */
  ignored_params : [],
  logging : {
    /**
     * Verbosity of the module's logging. This module uses bunyan
     * (https://github.com/trentm/node-bunyan) for its logging, and as such the
     * valid logging levels are 'fatal', 'error', 'warn', 'info', 'debug' and
     * 'trace'. Logging at levels 'info' and higher is very terse. For support
     * requests, attaching logs captured at 'trace' level are extremely helpful
     * in chasing down bugs.
     *
     * @env NEW_RELIC_LOG_LEVEL
     */
    level : 'info',
    /**
     * Where to put the log file -- by default just uses process.cwd +
     * 'newrelic_agent.log'. A special case is a filepath of 'stdout',
     * in which case all logging will go to stdout, or 'stderr', in which
     * case all logging will go to stderr.
     *
     * @env NEW_RELIC_LOG
     */
    filepath : require('path').join(process.cwd(), 'newrelic_agent.log')
  },
  /**
   * Whether to collect & submit error traces to New Relic.
   *
   * @env NEW_RELIC_ERROR_COLLECTOR_ENABLED
   */
  error_collector : {
    /**
     * Disabling the error tracer just means that errors aren't collected
     * and sent to New Relic -- it DOES NOT remove any instrumentation.
     */
    enabled : true,
    /**
     * List of HTTP error status codes the error tracer should disregard.
     * Ignoring a status code means that the transaction is not renamed to
     * match the code, and the request is not treated as an error by the error
     * collector.
     *
     * Defaults to 404 NOT FOUND.
     *
     * @env NEW_RELIC_ERROR_COLLECTOR_IGNORE_ERROR_CODES
     */
    ignore_status_codes : [404]
  },
  transaction_tracer : {
    /**
     * Whether to collect & submit slow transaction traces to New Relic. The
     * instrumentation is loaded regardless of this setting, as it's necessary
     * to gather metrics. Disable the agent to prevent the instrumentation from
     * loading.
     *
     * @env NEW_RELIC_TRACER_ENABLED
     */
    enabled : true,
    /**
     * The duration at below which the slow transaction tracer should collect a
     * transaction trace. If set to 'apdex_f', the threshold will be set to
     * 4 * apdex_t, which with a default apdex_t value of 500 milliseconds will
     * be 2 seconds.
     *
     * If a time is provided, it is set in seconds.
     *
     * @env NEW_RELIC_TRACER_THRESHOLD
     */
    transaction_threshold : 'apdex_f',
    /**
     * Increase this parameter to increase the diversity of the slow
     * transaction traces recorded by your application over time. Confused?
     * Read on.
     *
     * Transactions are named based on the request (see the README for the
     * details of how requests are mapped to transactions), and top_n refers to
     * the "top n slowest transactions" grouped by these names. The module will
     * only replace a recorded trace with a new trace if the new trace is
     * slower than the previous slowest trace of that name. The default value
     * for this setting is 20, as the transaction trace view page also defaults
     * to showing the 20 slowest transactions.
     *
     * If you want to record the absolute slowest transaction over the last
     * minute, set top_n to 0 or 1. This used to be the default, and has a
     * problem in that it will allow one very slow route to dominate your slow
     * transaction traces.
     *
     * The module will always record at least 5 different slow transactions in
     * the reporting periods after it starts up, and will reset its internal
     * slow trace aggregator if no slow transactions have been recorded for the
     * last 5 harvest cycles, restarting the aggregation process.
     *
     * @env NEW_RELIC_TRACER_TOP_N
     */
    top_n : 20
  },
  /**
   * Whether to enable internal supportability metrics and diagnostics. You're
   * welcome to turn these on, but they will probably be most useful to the
   * New Relic node engineering team.
   */
  debug : {
    /**
     * Whether to collect and submit internal supportability metrics alongside
     * application performance metrics.
     *
     * @env NEW_RELIC_DEBUG_METRICS
     */
    internal_metrics : false,
    /**
     * Traces the execution of the transaction tracer. Requires logging.level
     * to be set to 'trace' to provide any useful output.
     *
     * WARNING: The tracer tracing data is likely only to be intelligible to a
     * small number of people inside New Relic, so you should probably only
     * enable tracer tracing if asked to by New Relic, because it will affect
     * performance significantly.
     *
     * @env NEW_RELIC_DEBUG_TRACER
     */
    tracer_tracing : false
  },
  /**
   * Rules for naming or ignoring transactions.
   */
  rules : {
    /**
     * A list of rules of the format {pattern : 'pattern', name : 'name'} for
     * matching incoming request URLs and naming the associated New Relic
     * transactions. Both pattern and name are required. Additional attributes
     * are ignored. Patterns may have capture groups (following JavaScript
     * conventions), and names will use $1-style replacement strings. See
     * the documentation for addNamingRule for important caveats.
     *
     * @env NEW_RELIC_NAMING_RULES
     */
    name : [],
    /**
     * A list of patterns for matching incoming request URLs to be ignored by
     * the agent. Patterns may be strings or regular expressions.
     *
     * @env NEW_RELIC_IGNORING_RULES
     */
    ignore : []
  },
  /**
   * By default, any transactions that are not affected by other bits of
   * naming logic (the API, rules, or metric normalization rules) will
   * have their names set to 'NormalizedUri/*'. Setting this value to
   * false will set them instead to Uri/path/to/resource. Don't change
   * this setting unless you understand the implications of New Relic's
   * metric grouping issues and are confident your application isn't going
   * to run afoul of them. Your application could end up getting blackholed!
   * Nobody wants that.
   *
   * @env NEW_RELIC_ENFORCE_BACKSTOP
   */
  enforce_backstop : true
};