Add basic tests

Author: carlosedp

go.mod

@@ -1,6 +1,7 @@
 module github.com/labstack/echo-contrib
 
 require (
+	github.com/appleboy/gofight/v2 v2.1.1
 	github.com/casbin/casbin/v2 v2.0.0
 	github.com/codahale/hdrhistogram v0.0.0-20161010025455-3a0bb77429bd // indirect
 	github.com/gorilla/context v1.1.1
@@ -17,4 +18,4 @@ require (
 	go.uber.org/atomic v1.4.0 // indirect
 )
 
-go 1.13
+go 1.12

go.sum

@@ -1,61 +1,98 @@
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 github.com/uber/jaeger-lib v2.1.1+incompatible/go.mod h1:ComeNDZlWwrWnDv8aPp0Ba6+uUTzImX/AauajbLI56U=
+github.com/ugorji/go v1.1.4 h1:j4s+tAvLfL3bZyefP2SEWmhBzmuIlH/eqNuPdFPgngw=
+github.com/ugorji/go v1.1.4/go.mod h1:uQMGLiO92mf5W77hV/PUCpI3pbzQx3CRekS0kk+RGrc=
 github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6KllzawFIhcdPw=
 github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyCJ6HpOuEn7z0Csc=
 github.com/valyala/fasttemplate v1.0.1 h1:tY9CJiPnMXf1ERmG2EyK7gNUd+c6RKGD0IfU8WdUSz8=
 github.com/valyala/fasttemplate v1.0.1/go.mod h1:UQGH1tvbgY+Nz5t2n7tXsz52dQxojPUpymEIMZ47gx8=
+github.com/wendal/errors v0.0.0-20130201093226-f66c77a7882b/go.mod h1:Q12BUT7DqIlHRmgv3RskH+UCM/4eqVMgI0EMmlSpAXc=
 go.uber.org/atomic v1.4.0 h1:cxzIVoETapQEqDhQu3QfnvXAV4AlzcvUCxkVUFw3+EU=
 go.uber.org/atomic v1.4.0/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
 golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
+golang.org/x/crypto v0.0.0-20181127143415-eb0de9b17e85/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5 h1:58fnuSXlxZmFdJyvtTFVmVhcMLU6v5fEb/ok4wyqtNU=
 golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190503192946-f4e77d36d62c/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190607181551-461777fb6f67 h1:rJJxsykSlULwd2P2+pg/rtnwN2FrWp4IuCxOSyS0V00=
 golang.org/x/net v0.0.0-20190607181551-461777fb6f67/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190613194153-d28f0bde5980 h1:dfGZHvZk057jK2MCeWus/TowKpJ8y4AmooUzdBSR9GU=
@@ -127,5 +181,12 @@ golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190608022120-eacb66d2a7c3/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/go-playground/assert.v1 v1.2.1 h1:xoYuJVE7KT85PYWrN730RguIQO0ePzVRfFMXadIrXTM=
+gopkg.in/go-playground/assert.v1 v1.2.1/go.mod h1:9RXL0bg/zibRAgZUYszZSwO/z8Y/a8bDuhia5mkpMnE=
+gopkg.in/go-playground/validator.v8 v8.18.2 h1:lFB4DoMU6B626w8ny76MV7VX6W2VHct2GVOI3xgiMrQ=
+gopkg.in/go-playground/validator.v8 v8.18.2/go.mod h1:RX2a/7Ha8BgOhfk7j780h4/u/RRjR0eouCJSH80/M2Y=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

prometheus/prometheus.go

@@ -11,7 +11,7 @@ Example:
 	func main() {
 		e := echo.New()
 		// Enable metrics middleware
-		p := prometheus.NewPrometheus("echo")
+		p := prometheus.NewPrometheus("echo", nil)
 		p.Use(e)
 
 		e.Logger.Fatal(e.Start(":1323"))
@@ -29,12 +29,14 @@ import (
 	"time"
 
 	"github.com/labstack/echo/v4"
+	"github.com/labstack/echo/v4/middleware"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 	log "github.com/sirupsen/logrus"
 )
 
 var defaultMetricPath = "/metrics"
+var defaultSubsystem = "echo"
 
 // Standard default metrics
 //	counter, counter_vec, gauge, gauge_vec,
@@ -109,19 +111,21 @@ type Prometheus struct {
 	reqDur, reqSz, resSz prometheus.Summary
 	router               *echo.Echo
 	listenAddress        string
-	Ppg                  PrometheusPushGateway
+	Ppg                  PushGateway
 
 	MetricsList []*Metric
 	MetricsPath string
+	Subsystem   string
+	Skipper     middleware.Skipper
 
 	ReqCntURLLabelMappingFn RequestCounterURLLabelMappingFn
 
 	// Context string to use as a prometheus URL label
 	URLLabelFromContext string
 }
 
-// PrometheusPushGateway contains the configuration for pushing to a Prometheus pushgateway (optional)
-type PrometheusPushGateway struct {
+// PushGateway contains the configuration for pushing to a Prometheus pushgateway (optional)
+type PushGateway struct {
 
 	// Push interval in seconds
 	PushIntervalSeconds time.Duration
@@ -139,8 +143,11 @@ type PrometheusPushGateway struct {
 }
 
 // NewPrometheus generates a new set of metrics with a certain subsystem name
-func NewPrometheus(subsystem string, customMetricsList ...[]*Metric) *Prometheus {
+func NewPrometheus(subsystem string, skipper middleware.Skipper, customMetricsList ...[]*Metric) *Prometheus {
 	var metricsList []*Metric
+	if skipper == nil {
+		skipper = middleware.DefaultSkipper
+	}
 
 	if len(customMetricsList) > 1 {
 		panic("Too many args. NewPrometheus( string, <optional []*Metric> ).")
@@ -155,6 +162,8 @@ func NewPrometheus(subsystem string, customMetricsList ...[]*Metric) *Prometheus
 	p := &Prometheus{
 		MetricsList: metricsList,
 		MetricsPath: defaultMetricPath,
+		Subsystem:   defaultSubsystem,
+		Skipper:     skipper,
 		ReqCntURLLabelMappingFn: func(c echo.Context) string {
 			return c.Path() // i.e. by default do nothing, i.e. return URL as is
 		},
@@ -357,8 +366,10 @@ func (p *Prometheus) Use(e *echo.Echo) {
 func (p *Prometheus) HandlerFunc(next echo.HandlerFunc) echo.HandlerFunc {
 	return func(c echo.Context) error {
 		if c.Path() == p.MetricsPath {
-			next(c)
-			return nil
+			return next(c)
+		}
+		if p.Skipper(c) {
+			return next(c)
 		}
 
 		start := time.Now()
@@ -385,7 +396,7 @@ func (p *Prometheus) HandlerFunc(next echo.HandlerFunc) echo.HandlerFunc {
 		p.reqCnt.WithLabelValues(status, c.Request().Method, c.Request().Host, url).Inc()
 		p.reqSz.Observe(float64(reqSz))
 		p.resSz.Observe(resSz)
-		return nil
+		return next(c)
 	}
 }