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143 lines
4 KiB
CoffeeScript
143 lines
4 KiB
CoffeeScript
if process.env["USE_PROM_METRICS"] != "true"
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return module.exports = require("./statsd/metrics")
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else
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console.log("using prometheus")
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prom = require('./prom_wrapper')
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collectDefaultMetrics = prom.collectDefaultMetrics
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appname = "unknown"
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hostname = require('os').hostname()
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destructors = []
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require "./uv_threadpool_size"
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module.exports = Metrics =
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register: prom.registry
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initialize: (_name, opts = {}) ->
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appname = _name
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collectDefaultMetrics({ timeout: 5000, prefix: Metrics.buildPromKey()})
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if opts.ttlInMinutes
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prom.ttlInMinutes = opts.ttlInMinutes
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console.log("ENABLE_TRACE_AGENT set to #{process.env['ENABLE_TRACE_AGENT']}")
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if process.env['ENABLE_TRACE_AGENT'] == "true"
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console.log("starting google trace agent")
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traceAgent = require('@google-cloud/trace-agent')
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traceOpts =
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ignoreUrls: [/^\/status/, /^\/health_check/]
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traceAgent.start(traceOpts)
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console.log("ENABLE_DEBUG_AGENT set to #{process.env['ENABLE_DEBUG_AGENT']}")
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if process.env['ENABLE_DEBUG_AGENT'] == "true"
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console.log("starting google debug agent")
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debugAgent = require('@google-cloud/debug-agent')
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debugAgent.start({
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allowExpressions: true,
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serviceContext: {
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service: appname,
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version: process.env['BUILD_VERSION']
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}
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})
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console.log("ENABLE_PROFILE_AGENT set to #{process.env['ENABLE_PROFILE_AGENT']}")
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if process.env['ENABLE_PROFILE_AGENT'] == "true"
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console.log("starting google profile agent")
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profiler = require('@google-cloud/profiler')
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profiler.start({
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serviceContext: {
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service: appname,
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version: process.env['BUILD_VERSION']
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}
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})
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Metrics.inc("process_startup")
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registerDestructor: (func) ->
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destructors.push func
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injectMetricsRoute: (app) ->
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app.get('/metrics', (req, res) ->
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res.set('Content-Type', prom.registry.contentType)
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res.end(prom.registry.metrics())
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)
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buildPromKey: (key = "")->
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key.replace /[^a-zA-Z0-9]/g, "_"
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sanitizeValue: (value) ->
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parseFloat(value)
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set : (key, value, sampleRate = 1)->
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console.log("counts are not currently supported")
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inc : (key, sampleRate = 1, opts = {})->
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key = Metrics.buildPromKey(key)
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opts.app = appname
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opts.host = hostname
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prom.metric('counter', key).inc(opts)
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if process.env['DEBUG_METRICS']
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console.log("doing inc", key, opts)
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count : (key, count, sampleRate = 1, opts = {})->
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key = Metrics.buildPromKey(key)
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opts.app = appname
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opts.host = hostname
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prom.metric('counter', key).inc(opts, count)
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if process.env['DEBUG_METRICS']
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console.log("doing count/inc", key, opts)
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summary : (key, value, opts = {})->
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key = Metrics.buildPromKey(key)
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opts.app = appname
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opts.host = hostname
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prom.metric('summary', key).observe(opts, value)
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if process.env['DEBUG_METRICS']
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console.log("doing summary", key, value, opts)
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timing: (key, timeSpan, sampleRate, opts = {})->
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key = Metrics.buildPromKey("timer_" + key)
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opts.app = appname
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opts.host = hostname
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prom.metric('summary', key).observe(opts, timeSpan)
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if process.env['DEBUG_METRICS']
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console.log("doing timing", key, opts)
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Timer : class
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constructor :(key, sampleRate = 1, opts)->
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this.start = new Date()
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key = Metrics.buildPromKey(key)
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this.key = key
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this.sampleRate = sampleRate
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this.opts = opts
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done:->
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timeSpan = new Date - this.start
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Metrics.timing(this.key, timeSpan, this.sampleRate, this.opts)
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return timeSpan
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gauge : (key, value, sampleRate = 1, opts)->
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key = Metrics.buildPromKey(key)
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prom.metric('gauge', key).set({app: appname, host: hostname, status: opts?.status}, this.sanitizeValue(value))
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if process.env['DEBUG_METRICS']
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console.log("doing gauge", key, opts)
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globalGauge: (key, value, sampleRate = 1, opts)->
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key = Metrics.buildPromKey(key)
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prom.metric('gauge', key).set({app: appname, status: opts?.status},this.sanitizeValue(value))
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mongodb: require "./mongodb"
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http: require "./http"
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open_sockets: require "./open_sockets"
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event_loop: require "./event_loop"
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memory: require "./memory"
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timeAsyncMethod: require('./timeAsyncMethod')
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close: () ->
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for func in destructors
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func()
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