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: process.env.NEW_RELIC_APP_NAME || 'fake name',
	/**
	 * The user's license key. Must be set by per-app configuration file.
	 *
	 * @env NEW_RELIC_LICENSE_KEY
	 */
	license_key: process.env.NEW_RELIC_LICENSE_KEY || 'fake license',
	/**
	 * 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: 443,
	/**
	 * Whether or not to use SSL to connect to New Relic's servers.
	 *
	 * @env NEW_RELIC_USE_SSL
	 */
	ssl: true,
	/**
	 * Proxy host to use to connect to the internet.
	 *
	 * FIXME: proxy support does not currently work
	 *
	 * @env NEW_RELIC_PROXY_HOST
	 */
	proxy_host: '',
	/**
	 * Proxy port to use to connect to the internet.
	 *
	 * FIXME: proxy support does not currently work
	 *
	 * @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,
	/**
	 * Browser Monitoring
	 *
	 * Browser monitoring lets you correlate transactions between the server and browser
	 * giving you accurate data on how long a page request takes, from request,
	 * through the server response, up until the actual page render completes.
	 */
	browser_monitoring: {

		/**
		 * Enable browser monitoring header generation.
		 *
		 * This does not auto-instrument, rather it enables the agent to generate headers.
		 * The newrelic module can generate the appropriate <script> header, but you must
		 * inject the header yourself, or use a module that does so.
		 *
		 * Usage:
		 *
		 *     var newrelic = require('newrelic');
		 *
		 *     router.get('/', function (req, res) {
		 *       var header = newrelic.getBrowserTimingHeader();
		 *       res.write(header)
		 *       // write the rest of the page
		 *     });
		 *
		 * This generates the <script>...</script> header necessary for Browser Monitoring
		 * This script must be manually injected into your templates, as high as possible
		 * in the header, but _after_ any X-UA-COMPATIBLE HTTP-EQUIV meta tags.
		 * Otherwise you may hurt IE!
		 *
		 * This method must be called _during_ a transaction, and must be called every
		 * time you want to generate the headers.
		 *
		 * Do *not* reuse the headers between users, or even between requests.
		 *
		 * @env NEW_RELIC_BROWSER_MONITOR_ENABLE
		 */
		enable: true,

		/**
		 * Request un-minified sources from the server.
		 *
		 * @env NEW_RELIC_BROWSER_MONITOR_DEBUG
		 */
		debug: false
	}

};