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matchers.go
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matchers.go
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package mux
import (
c "gopkg.in/h2non/gentleman.v2/context"
types "gopkg.in/h2non/gentleman.v2/plugins/bodytype"
"regexp"
"strings"
)
// Matcher represent the function interface implemented by matchers
type Matcher func(ctx *c.Context) bool
// Match creates a new multiplexer based on a given matcher function.
func Match(matchers ...Matcher) *Mux {
mx := New()
mx.AddMatcher(matchers...)
return mx
}
// Method returns a new multiplexer who matches an HTTP request based on the given method/s.
func Method(methods ...string) *Mux {
return Match(func(ctx *c.Context) bool {
if ctx.GetString("$phase") != "request" {
return false
}
for _, method := range methods {
if ctx.Request.Method == method {
return true
}
}
return false
})
}
// Path returns a new multiplexer who matches an HTTP request
// path based on the given regexp pattern.
func Path(pattern string) *Mux {
return Match(func(ctx *c.Context) bool {
if ctx.GetString("$phase") != "request" {
return false
}
matched, _ := regexp.MatchString(pattern, ctx.Request.URL.Path)
return matched
})
}
// URL returns a new multiplexer who matches an HTTP request
// URL based on the given regexp pattern.
func URL(pattern string) *Mux {
return Match(func(ctx *c.Context) bool {
if ctx.GetString("$phase") != "request" {
return false
}
matched, _ := regexp.MatchString(pattern, ctx.Request.URL.String())
return matched
})
}
// Host returns a new multiplexer who matches an HTTP request
// URL host based on the given regexp pattern.
func Host(pattern string) *Mux {
return Match(func(ctx *c.Context) bool {
if ctx.GetString("$phase") != "request" {
return false
}
matched, _ := regexp.MatchString(pattern, ctx.Request.URL.Host)
return matched
})
}
// Query returns a new multiplexer who matches an HTTP request
// query param based on the given key and regexp pattern.
func Query(key, pattern string) *Mux {
return Match(func(ctx *c.Context) bool {
if ctx.GetString("$phase") != "request" {
return false
}
matched, _ := regexp.MatchString(pattern, ctx.Request.URL.Query().Get(key))
return matched
})
}
// RequestHeader returns a new multiplexer who matches an HTTP request
// header field based on the given key and regexp pattern.
func RequestHeader(key, pattern string) *Mux {
return Match(func(ctx *c.Context) bool {
if ctx.GetString("$phase") != "request" {
return false
}
matched, _ := regexp.MatchString(pattern, ctx.Request.Header.Get(key))
return matched
})
}
// ResponseHeader returns a new multiplexer who matches an HTTP response
// header field based on the given key and regexp pattern.
func ResponseHeader(key, pattern string) *Mux {
return Match(func(ctx *c.Context) bool {
if ctx.GetString("$phase") != "response" {
return false
}
matched, _ := regexp.MatchString(pattern, ctx.Response.Header.Get(key))
return matched
})
}
// Type returns a new multiplexer who matches an HTTP response
// Content-Type header field based on the given type string.
func Type(kind string) *Mux {
return Match(func(ctx *c.Context) bool {
if ctx.GetString("$phase") != "response" {
return false
}
if value, ok := types.Types[kind]; ok {
kind = value
}
return strings.Contains(ctx.Response.Header.Get("Content-Type"), kind)
})
}
// Status returns a new multiplexer who matches an HTTP response
// status code based on the given status codes.
func Status(codes ...int) *Mux {
return Match(func(ctx *c.Context) bool {
if ctx.GetString("$phase") != "response" {
return false
}
for _, code := range codes {
if ctx.Response.StatusCode == code {
return true
}
}
return false
})
}
// StatusRange returns a new multiplexer who matches an HTTP response
// status code based on the given status range, including both numbers.
func StatusRange(start, end int) *Mux {
return Match(func(ctx *c.Context) bool {
return ctx.GetString("$phase") == "response" && ctx.Response.StatusCode >= start && ctx.Response.StatusCode <= end
})
}
// Error returns a new multiplexer who matches errors originated
// in the client or in the server.
func Error() *Mux {
return Match(func(ctx *c.Context) bool {
return (ctx.GetString("$phase") == "error" && ctx.Error != nil) ||
(ctx.GetString("$phase") == "response" && ctx.Response.StatusCode >= 500)
})
}
// ServerError returns a new multiplexer who matches response errors by the server.
func ServerError() *Mux {
return Match(func(ctx *c.Context) bool {
return ctx.GetString("$phase") == "response" && ctx.Response.StatusCode >= 500
})
}