Update dependencies

5 files changed, 199 insertions, 28 deletions

diff --git a/vendor/github.com/gorilla/mux/README.md b/vendor/github.com/gorilla/mux/README.md
index cdab878..b096bf6 100644
--- a/vendor/github.com/gorilla/mux/README.md
+++ b/vendor/github.com/gorilla/mux/README.md
@@ -15,7 +15,7 @@ The name mux stands for "HTTP request multiplexer". Like the standard `http.Serv
 
 * It implements the `http.Handler` interface so it is compatible with the standard `http.ServeMux`.
 * Requests can be matched based on URL host, path, path prefix, schemes, header and query values, HTTP methods or using custom matchers.
-* URL hosts and paths can have variables with an optional regular expression.
+* URL hosts, paths and query values can have variables with an optional regular expression.
 * Registered URLs can be built, or "reversed", which helps maintaining references to resources.
 * Routes can be used as subrouters: nested routes are only tested if the parent route matches. This is useful to define groups of routes that share common conditions like a host, a path prefix or other repeated attributes. As a bonus, this optimizes request matching.
 
@@ -24,9 +24,9 @@ The name mux stands for "HTTP request multiplexer". Like the standard `http.Serv
 * [Install](#install)
 * [Examples](#examples)
 * [Matching Routes](#matching-routes)
-* [Listing Routes](#listing-routes)
 * [Static Files](#static-files)
 * [Registered URLs](#registered-urls)
+* [Walking Routes](#walking-routes)
 * [Full Example](#full-example)
 
 ---
@@ -135,6 +135,14 @@ r.HandleFunc("/products", ProductsHandler).
   Schemes("http")
 ```
 
+Routes are tested in the order they were added to the router. If two routes match, the first one wins:
+
+```go
+r := mux.NewRouter()
+r.HandleFunc("/specific", specificHandler)
+r.PathPrefix("/").Handler(catchAllHandler)
+```
+
 Setting the same matching conditions again and again can be boring, so we have a way to group several routes that share the same requirements. We call it "subrouting".
 
 For example, let's say we have several URLs that should only match when the host is `www.example.com`. Create a route for that host and get a "subrouter" from it:
@@ -168,7 +176,6 @@ s.HandleFunc("/{key}/", ProductHandler)
 // "/products/{key}/details"
 s.HandleFunc("/{key}/details", ProductDetailsHandler)
 ```
-
 ### Listing Routes
 
 Routes on a mux can be listed using the Router.Walk method—useful for generating documentation:
@@ -179,6 +186,7 @@ package main
 import (
     "fmt"
     "net/http"
+    "strings"
 
     "github.com/gorilla/mux"
 )
@@ -190,15 +198,25 @@ func handler(w http.ResponseWriter, r *http.Request) {
 func main() {
     r := mux.NewRouter()
     r.HandleFunc("/", handler)
-    r.HandleFunc("/products", handler)
-    r.HandleFunc("/articles", handler)
-    r.HandleFunc("/articles/{id}", handler)
+    r.HandleFunc("/products", handler).Methods("POST")
+    r.HandleFunc("/articles", handler).Methods("GET")
+    r.HandleFunc("/articles/{id}", handler).Methods("GET", "PUT")
     r.Walk(func(route *mux.Route, router *mux.Router, ancestors []*mux.Route) error {
         t, err := route.GetPathTemplate()
         if err != nil {
             return err
         }
-        fmt.Println(t)
+        // p will contain regular expression is compatible with regular expression in Perl, Python, and other languages.
+        // for instance the regular expression for path '/articles/{id}' will be '^/articles/(?P<v0>[^/]+)$'
+        p, err := route.GetPathRegexp()
+        if err != nil {
+            return err
+        }
+        m, err := route.GetMethods()
+        if err != nil {
+            return err
+        }
+        fmt.Println(strings.Join(m, ","), t, p)
         return nil
     })
     http.Handle("/", r)
@@ -258,19 +276,21 @@ url, err := r.Get("article").URL("category", "technology", "id", "42")
 "/articles/technology/42"
 ```
 
-This also works for host variables:
+This also works for host and query value variables:
 
 ```go
 r := mux.NewRouter()
 r.Host("{subdomain}.domain.com").
   Path("/articles/{category}/{id:[0-9]+}").
+  Queries("filter", "{filter}").
   HandlerFunc(ArticleHandler).
   Name("article")
 
-// url.String() will be "http://news.domain.com/articles/technology/42"
+// url.String() will be "http://news.domain.com/articles/technology/42?filter=gorilla"
 url, err := r.Get("article").URL("subdomain", "news",
                                  "category", "technology",
-                                 "id", "42")
+                                 "id", "42",
+                                 "filter", "gorilla")
 ```
 
 All variables defined in the route are required, and their values must conform to the corresponding patterns. These requirements guarantee that a generated URL will always match a registered route -- the only exception is for explicitly defined "build-only" routes which never match.
@@ -308,6 +328,37 @@ url, err := r.Get("article").URL("subdomain", "news",
                                  "id", "42")
 ```
 
+### Walking Routes
+
+The `Walk` function on `mux.Router` can be used to visit all of the routes that are registered on a router. For example,
+the following prints all of the registered routes:
+
+```go
+r := mux.NewRouter()
+r.HandleFunc("/", handler)
+r.HandleFunc("/products", handler).Methods("POST")
+r.HandleFunc("/articles", handler).Methods("GET")
+r.HandleFunc("/articles/{id}", handler).Methods("GET", "PUT")
+r.Walk(func(route *mux.Route, router *mux.Router, ancestors []*mux.Route) error {
+    t, err := route.GetPathTemplate()
+    if err != nil {
+        return err
+    }
+    // p will contain a regular expression that is compatible with regular expressions in Perl, Python, and other languages.
+    // For example, the regular expression for path '/articles/{id}' will be '^/articles/(?P<v0>[^/]+)$'.
+    p, err := route.GetPathRegexp()
+    if err != nil {
+        return err
+    }
+    m, err := route.GetMethods()
+    if err != nil {
+        return err
+    }
+    fmt.Println(strings.Join(m, ","), t, p)
+    return nil
+})
+```
+
 ## Full Example
 
 Here's a complete, runnable example of a small `mux` based server:
diff --git a/vendor/github.com/gorilla/mux/doc.go b/vendor/github.com/gorilla/mux/doc.go
index 00daf4a..cce30b2 100644
--- a/vendor/github.com/gorilla/mux/doc.go
+++ b/vendor/github.com/gorilla/mux/doc.go
@@ -12,8 +12,8 @@ or other conditions. The main features are:
 
 	* Requests can be matched based on URL host, path, path prefix, schemes,
 	  header and query values, HTTP methods or using custom matchers.
-	* URL hosts and paths can have variables with an optional regular
-	  expression.
+	* URL hosts, paths and query values can have variables with an optional
+	  regular expression.
 	* Registered URLs can be built, or "reversed", which helps maintaining
 	  references to resources.
 	* Routes can be used as subrouters: nested routes are only tested if the
@@ -188,18 +188,20 @@ key/value pairs for the route variables. For the previous route, we would do:
 
 	"/articles/technology/42"
 
-This also works for host variables:
+This also works for host and query value variables:
 
 	r := mux.NewRouter()
 	r.Host("{subdomain}.domain.com").
 	  Path("/articles/{category}/{id:[0-9]+}").
+	  Queries("filter", "{filter}").
 	  HandlerFunc(ArticleHandler).
 	  Name("article")
 
-	// url.String() will be "http://news.domain.com/articles/technology/42"
+	// url.String() will be "http://news.domain.com/articles/technology/42?filter=gorilla"
 	url, err := r.Get("article").URL("subdomain", "news",
 	                                 "category", "technology",
-	                                 "id", "42")
+	                                 "id", "42",
+	                                 "filter", "gorilla")
 
 All variables defined in the route are required, and their values must
 conform to the corresponding patterns. These requirements guarantee that a
diff --git a/vendor/github.com/gorilla/mux/mux.go b/vendor/github.com/gorilla/mux/mux.go
index d66ec38..fb69196 100644
--- a/vendor/github.com/gorilla/mux/mux.go
+++ b/vendor/github.com/gorilla/mux/mux.go
@@ -13,6 +13,10 @@ import (
 	"strings"
 )
 
+var (
+	ErrMethodMismatch = errors.New("method is not allowed")
+)
+
 // NewRouter returns a new router instance.
 func NewRouter() *Router {
 	return &Router{namedRoutes: make(map[string]*Route), KeepContext: false}
@@ -39,6 +43,10 @@ func NewRouter() *Router {
 type Router struct {
 	// Configurable Handler to be used when no route matches.
 	NotFoundHandler http.Handler
+
+	// Configurable Handler to be used when the request method does not match the route.
+	MethodNotAllowedHandler http.Handler
+
 	// Parent route, if this is a subrouter.
 	parent parentRoute
 	// Routes to be matched, in order.
@@ -65,6 +73,11 @@ func (r *Router) Match(req *http.Request, match *RouteMatch) bool {
 		}
 	}
 
+	if match.MatchErr == ErrMethodMismatch && r.MethodNotAllowedHandler != nil {
+		match.Handler = r.MethodNotAllowedHandler
+		return true
+	}
+
 	// Closest match for a router (includes sub-routers)
 	if r.NotFoundHandler != nil {
 		match.Handler = r.NotFoundHandler
@@ -105,9 +118,15 @@ func (r *Router) ServeHTTP(w http.ResponseWriter, req *http.Request) {
 		req = setVars(req, match.Vars)
 		req = setCurrentRoute(req, match.Route)
 	}
+
+	if handler == nil && match.MatchErr == ErrMethodMismatch {
+		handler = methodNotAllowedHandler()
+	}
+
 	if handler == nil {
 		handler = http.NotFoundHandler()
 	}
+
 	if !r.KeepContext {
 		defer contextClear(req)
 	}
@@ -176,6 +195,13 @@ func (r *Router) UseEncodedPath() *Router {
 // parentRoute
 // ----------------------------------------------------------------------------
 
+func (r *Router) getBuildScheme() string {
+	if r.parent != nil {
+		return r.parent.getBuildScheme()
+	}
+	return ""
+}
+
 // getNamedRoutes returns the map where named routes are registered.
 func (r *Router) getNamedRoutes() map[string]*Route {
 	if r.namedRoutes == nil {
@@ -299,10 +325,6 @@ type WalkFunc func(route *Route, router *Router, ancestors []*Route) error
 
 func (r *Router) walk(walkFn WalkFunc, ancestors []*Route) error {
 	for _, t := range r.routes {
-		if t.regexp == nil || t.regexp.path == nil || t.regexp.path.template == "" {
-			continue
-		}
-
 		err := walkFn(t, r, ancestors)
 		if err == SkipRouter {
 			continue
@@ -312,10 +334,12 @@ func (r *Router) walk(walkFn WalkFunc, ancestors []*Route) error {
 		}
 		for _, sr := range t.matchers {
 			if h, ok := sr.(*Router); ok {
+				ancestors = append(ancestors, t)
 				err := h.walk(walkFn, ancestors)
 				if err != nil {
 					return err
 				}
+				ancestors = ancestors[:len(ancestors)-1]
 			}
 		}
 		if h, ok := t.handler.(*Router); ok {
@@ -339,6 +363,11 @@ type RouteMatch struct {
 	Route   *Route
 	Handler http.Handler
 	Vars    map[string]string
+
+	// MatchErr is set to appropriate matching error
+	// It is set to ErrMethodMismatch if there is a mismatch in
+	// the request method and route method
+	MatchErr error
 }
 
 type contextKey int
@@ -458,7 +487,7 @@ func mapFromPairsToString(pairs ...string) (map[string]string, error) {
 	return m, nil
 }
 
-// mapFromPairsToRegex converts variadic string paramers to a
+// mapFromPairsToRegex converts variadic string parameters to a
 // string to regex map.
 func mapFromPairsToRegex(pairs ...string) (map[string]*regexp.Regexp, error) {
 	length, err := checkPairs(pairs...)
@@ -540,3 +569,12 @@ func matchMapWithRegex(toCheck map[string]*regexp.Regexp, toMatch map[string][]s
 	}
 	return true
 }
+
+// methodNotAllowed replies to the request with an HTTP status code 405.
+func methodNotAllowed(w http.ResponseWriter, r *http.Request) {
+	w.WriteHeader(http.StatusMethodNotAllowed)
+}
+
+// methodNotAllowedHandler returns a simple request handler
+// that replies to each request with a status code 405.
+func methodNotAllowedHandler() http.Handler { return http.HandlerFunc(methodNotAllowed) }
diff --git a/vendor/github.com/gorilla/mux/regexp.go b/vendor/github.com/gorilla/mux/regexp.go
index 0189ad3..80d1f78 100644
--- a/vendor/github.com/gorilla/mux/regexp.go
+++ b/vendor/github.com/gorilla/mux/regexp.go
@@ -35,7 +35,7 @@ func newRouteRegexp(tpl string, matchHost, matchPrefix, matchQuery, strictSlash,
 	// Now let's parse it.
 	defaultPattern := "[^/]+"
 	if matchQuery {
-		defaultPattern = "[^?&]*"
+		defaultPattern = ".*"
 	} else if matchHost {
 		defaultPattern = "[^.]+"
 		matchPrefix = false
@@ -178,6 +178,9 @@ func (r *routeRegexp) url(values map[string]string) (string, error) {
 		if !ok {
 			return "", fmt.Errorf("mux: missing route variable %q", v)
 		}
+		if r.matchQuery {
+			value = url.QueryEscape(value)
+		}
 		urlValues[k] = value
 	}
 	rv := fmt.Sprintf(r.reverse, urlValues...)
diff --git a/vendor/github.com/gorilla/mux/route.go b/vendor/github.com/gorilla/mux/route.go
index 5544c1f..6863adb 100644
--- a/vendor/github.com/gorilla/mux/route.go
+++ b/vendor/github.com/gorilla/mux/route.go
@@ -31,6 +31,8 @@ type Route struct {
 	skipClean bool
 	// If true, "/path/foo%2Fbar/to" will match the path "/path/{var}/to"
 	useEncodedPath bool
+	// The scheme used when building URLs.
+	buildScheme string
 	// If true, this route never matches: it is only used to build URLs.
 	buildOnly bool
 	// The name used to build URLs.
@@ -50,12 +52,27 @@ func (r *Route) Match(req *http.Request, match *RouteMatch) bool {
 	if r.buildOnly || r.err != nil {
 		return false
 	}
+
+	var matchErr error
+
 	// Match everything.
 	for _, m := range r.matchers {
 		if matched := m.Match(req, match); !matched {
+			if _, ok := m.(methodMatcher); ok {
+				matchErr = ErrMethodMismatch
+				continue
+			}
+			matchErr = nil
 			return false
 		}
 	}
+
+	if matchErr != nil {
+		match.MatchErr = matchErr
+		return false
+	}
+
+	match.MatchErr = nil
 	// Yay, we have a match. Let's collect some info about it.
 	if match.Route == nil {
 		match.Route = r
@@ -66,6 +83,7 @@ func (r *Route) Match(req *http.Request, match *RouteMatch) bool {
 	if match.Vars == nil {
 		match.Vars = make(map[string]string)
 	}
+
 	// Set variables.
 	if r.regexp != nil {
 		r.regexp.setMatch(req, match, r)
@@ -394,6 +412,9 @@ func (r *Route) Schemes(schemes ...string) *Route {
 	for k, v := range schemes {
 		schemes[k] = strings.ToLower(v)
 	}
+	if r.buildScheme == "" && len(schemes) > 0 {
+		r.buildScheme = schemes[0]
+	}
 	return r.addMatcher(schemeMatcher(schemes))
 }
 
@@ -477,22 +498,33 @@ func (r *Route) URL(pairs ...string) (*url.URL, error) {
 		return nil, err
 	}
 	var scheme, host, path string
+	queries := make([]string, 0, len(r.regexp.queries))
 	if r.regexp.host != nil {
-		// Set a default scheme.
-		scheme = "http"
 		if host, err = r.regexp.host.url(values); err != nil {
 			return nil, err
 		}
+		scheme = "http"
+		if s := r.getBuildScheme(); s != "" {
+			scheme = s
+		}
 	}
 	if r.regexp.path != nil {
 		if path, err = r.regexp.path.url(values); err != nil {
 			return nil, err
 		}
 	}
+	for _, q := range r.regexp.queries {
+		var query string
+		if query, err = q.url(values); err != nil {
+			return nil, err
+		}
+		queries = append(queries, query)
+	}
 	return &url.URL{
-		Scheme: scheme,
-		Host:   host,
-		Path:   path,
+		Scheme:   scheme,
+		Host:     host,
+		Path:     path,
+		RawQuery: strings.Join(queries, "&"),
 	}, nil
 }
 
@@ -514,10 +546,14 @@ func (r *Route) URLHost(pairs ...string) (*url.URL, error) {
 	if err != nil {
 		return nil, err
 	}
-	return &url.URL{
+	u := &url.URL{
 		Scheme: "http",
 		Host:   host,
-	}, nil
+	}
+	if s := r.getBuildScheme(); s != "" {
+		u.Scheme = s
+	}
+	return u, nil
 }
 
 // URLPath builds the path part of the URL for a route. See Route.URL().
@@ -558,6 +594,36 @@ func (r *Route) GetPathTemplate() (string, error) {
 	return r.regexp.path.template, nil
 }
 
+// GetPathRegexp returns the expanded regular expression used to match route path.
+// This is useful for building simple REST API documentation and for instrumentation
+// against third-party services.
+// An error will be returned if the route does not define a path.
+func (r *Route) GetPathRegexp() (string, error) {
+	if r.err != nil {
+		return "", r.err
+	}
+	if r.regexp == nil || r.regexp.path == nil {
+		return "", errors.New("mux: route does not have a path")
+	}
+	return r.regexp.path.regexp.String(), nil
+}
+
+// GetMethods returns the methods the route matches against
+// This is useful for building simple REST API documentation and for instrumentation
+// against third-party services.
+// An empty list will be returned if route does not have methods.
+func (r *Route) GetMethods() ([]string, error) {
+	if r.err != nil {
+		return nil, r.err
+	}
+	for _, m := range r.matchers {
+		if methods, ok := m.(methodMatcher); ok {
+			return []string(methods), nil
+		}
+	}
+	return nil, nil
+}
+
 // GetHostTemplate returns the template used to build the
 // route match.
 // This is useful for building simple REST API documentation and for instrumentation
@@ -599,11 +665,22 @@ func (r *Route) buildVars(m map[string]string) map[string]string {
 
 // parentRoute allows routes to know about parent host and path definitions.
 type parentRoute interface {
+	getBuildScheme() string
 	getNamedRoutes() map[string]*Route
 	getRegexpGroup() *routeRegexpGroup
 	buildVars(map[string]string) map[string]string
 }
 
+func (r *Route) getBuildScheme() string {
+	if r.buildScheme != "" {
+		return r.buildScheme
+	}
+	if r.parent != nil {
+		return r.parent.getBuildScheme()
+	}
+	return ""
+}
+
 // getNamedRoutes returns the map where named routes are registered.
 func (r *Route) getNamedRoutes() map[string]*Route {
 	if r.parent == nil {