示例#1
0
// FullPath returns the action full path computed by concatenating the API and resource base paths
// with the action specific path.
func (r *RouteDefinition) FullPath() string {
	if r.IsAbsolute() {
		return httppath.Clean(r.Path[1:])
	}
	var base string
	if r.Parent != nil && r.Parent.Parent != nil {
		base = r.Parent.Parent.FullPath()
	}
	return httppath.Clean(path.Join(base, r.Path))
}
示例#2
0
func cleanPath(path string, o MatchingOptions) string {
	path = httppath.Clean(path)
	if o.ignoreTrailingSlash() && len(path) > 1 && path[len(path)-1] == '/' {
		path = path[:len(path)-1]
	}

	return path
}
示例#3
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// FullPath computes the base path to the resource actions concatenating the API and parent resource
// base paths as needed.
func (r *ResourceDefinition) FullPath() string {
	if strings.HasPrefix(r.BasePath, "//") {
		return httppath.Clean(r.BasePath)
	}
	var basePath string
	if p := r.Parent(); p != nil {
		if ca := p.CanonicalAction(); ca != nil {
			if routes := ca.Routes; len(routes) > 0 {
				// Note: all these tests should be true at code generation time
				// as DSL validation makes sure that parent resources have a
				// canonical path.
				basePath = path.Join(routes[0].FullPath())
			}
		}
	} else {
		basePath = Design.BasePath
	}
	return httppath.Clean(path.Join(basePath, r.BasePath))
}
示例#4
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// constructs a matcher based on the provided definitions.
//
// If `ignoreTrailingSlash` is true, the matcher handles
// paths with or without a trailing slash equally.
//
// It constructs the route definition into a trie structure
// based on their path condition, if any, and puts the routes
// with the same path condition into a leaf matcher structure
// where they get evaluated after the leaf was matched based
// on the rest of the conditions so that most strict route
// definition matches first.
func newMatcher(rs []*Route, o MatchingOptions) (*matcher, []*definitionError) {
	var (
		errors     []*definitionError
		rootLeaves leafMatchers
	)

	pathMatchers := make(map[string]*pathMatcher)

	for i, r := range rs {
		l, err := newLeaf(r)
		if err != nil {
			errors = append(errors, &definitionError{r.Id, i, err})
			continue
		}

		p := r.Path
		if p == "" {
			rootLeaves = append(rootLeaves, l)
			continue
		}

		// normalize path
		// in case ignoring trailing slashes, store and match all paths
		// without the trailing slash
		p = httppath.Clean(p)
		if o.ignoreTrailingSlash() && p[len(p)-1] == '/' {
			p = p[:len(p)-1]
		}

		pm := pathMatchers[p]
		if pm == nil {
			pm = &pathMatcher{freeWildcardParam: freeWildcardParam(p)}
			pathMatchers[p] = pm
		}

		pm.leaves = append(pm.leaves, l)
	}

	pathTree := &pathmux.Tree{}
	for p, m := range pathMatchers {

		// sort leaves during construction time, based on their priority
		sort.Sort(m.leaves)

		err := pathTree.Add(p, m)
		if err != nil {
			errors = append(errors, &definitionError{"", -1, err})
		}
	}

	// sort root leaves during construction time, based on their priority
	sort.Sort(rootLeaves)

	return &matcher{pathTree, rootLeaves, o}, errors
}
示例#5
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// tries to match a request against the available definitions. If a match is found,
// returns the associated value, and the wildcard parameters from the path definition,
// if any.
func (m *matcher) match(r *http.Request) (*Route, map[string]string) {
	// normalize path before matching
	// in case ignoring trailing slashes, match without the trailing slash
	path := httppath.Clean(r.URL.Path)
	if m.matchingOptions.ignoreTrailingSlash() && path[len(path)-1] == '/' {
		path = path[:len(path)-1]
	}

	// first match fixed and wildcard paths
	leaves, params := matchPathTree(m.paths, path)
	l := matchLeaves(leaves, r, path)
	if l != nil {
		return l.route, params
	}

	// if no path match, match root leaves for other conditions
	l = matchLeaves(m.rootLeaves, r, path)
	if l != nil {
		return l.route, nil
	}

	return nil, nil
}
示例#6
0
func (t *TreeMux) ServeHTTP(w http.ResponseWriter, r *http.Request) {

	if t.PanicHandler != nil {
		defer t.serveHTTPPanic(w, r)
	}

	path := r.RequestURI
	pathLen := len(path)
	if pathLen > 0 && t.PathSource == RequestURI {
		rawQueryLen := len(r.URL.RawQuery)

		if rawQueryLen != 0 || path[pathLen-1] == '?' {
			// Remove any query string and the ?.
			path = path[:pathLen-rawQueryLen-1]
			pathLen = len(path)
		}
	} else {
		// In testing with http.NewRequest,
		// RequestURI is not set so just grab URL.Path instead.
		path = r.URL.Path
		pathLen = len(path)
	}

	trailingSlash := path[pathLen-1] == '/' && pathLen > 1
	if trailingSlash && t.RedirectTrailingSlash {
		path = path[:pathLen-1]
	}
	// params := make(map[string]string)
	var params map[string]string
	n := t.root.search(path[1:], &params)
	if n == nil {
		if t.RedirectCleanPath {
			// Path was not found. Try cleaning it up and search again.
			// TODO Test this
			cleanPath := httppath.Clean(path)
			n = t.root.search(cleanPath[1:], &params)
			if n == nil {
				// Still nothing found.
				t.NotFoundHandler(w, r)
				return
			} else {
				if statusCode, ok := t.redirectStatusCode(r.Method); ok {
					// Redirect to the actual path
					http.Redirect(w, r, cleanPath, statusCode)
					return
				}
			}
		} else {
			t.NotFoundHandler(w, r)
			return
		}
	}

	handler, ok := n.leafHandler[r.Method]
	if !ok {
		if r.Method == "HEAD" && t.HeadCanUseGet {
			handler, ok = n.leafHandler["GET"]
		}

		if !ok {
			t.MethodNotAllowedHandler(w, r, n.leafHandler)
			return
		}
	}

	if !n.isCatchAll || t.RemoveCatchAllTrailingSlash {
		if trailingSlash != n.addSlash && t.RedirectTrailingSlash {
			if statusCode, ok := t.redirectStatusCode(r.Method); ok {
				if n.addSlash {
					// Need to add a slash.
					http.Redirect(w, r, path+"/", statusCode)
				} else if path != "/" {
					// We need to remove the slash. This was already done at the
					// beginning of the function.
					http.Redirect(w, r, path, statusCode)
				}
				return
			}
		}
	}

	handler(w, r, params)
}
示例#7
0
文件: router.go 项目: fhermeni/wints
func (t *TreeMux) ServeHTTP(w http.ResponseWriter, r *http.Request) {

	if t.PanicHandler != nil {
		defer t.serveHTTPPanic(w, r)
	}

	path := r.RequestURI
	pathLen := len(path)
	if pathLen > 0 && t.PathSource == RequestURI {
		rawQueryLen := len(r.URL.RawQuery)

		if rawQueryLen != 0 || path[pathLen-1] == '?' {
			// Remove any query string and the ?.
			path = path[:pathLen-rawQueryLen-1]
			pathLen = len(path)
		}
	} else {
		// In testing with http.NewRequest,
		// RequestURI is not set so just grab URL.Path instead.
		path = r.URL.Path
		pathLen = len(path)
	}

	trailingSlash := path[pathLen-1] == '/' && pathLen > 1
	if trailingSlash && t.RedirectTrailingSlash {
		path = path[:pathLen-1]
	}
	n, params := t.root.search(path[1:])
	if n == nil {
		if t.RedirectCleanPath {
			// Path was not found. Try cleaning it up and search again.
			// TODO Test this
			cleanPath := httppath.Clean(path)
			n, params = t.root.search(cleanPath[1:])
			if n == nil {
				// Still nothing found.
				t.NotFoundHandler(w, r)
				return
			} else {
				if statusCode, ok := t.redirectStatusCode(r.Method); ok {
					// Redirect to the actual path
					http.Redirect(w, r, cleanPath, statusCode)
					return
				}
			}
		} else {
			t.NotFoundHandler(w, r)
			return
		}
	}

	handler, ok := n.leafHandler[r.Method]
	if !ok {
		if r.Method == "HEAD" && t.HeadCanUseGet {
			handler, ok = n.leafHandler["GET"]
		}

		if !ok {
			t.MethodNotAllowedHandler(w, r, n.leafHandler)
			return
		}
	}

	if !n.isCatchAll || t.RemoveCatchAllTrailingSlash {
		if trailingSlash != n.addSlash && t.RedirectTrailingSlash {
			if statusCode, ok := t.redirectStatusCode(r.Method); ok {
				if n.addSlash {
					// Need to add a slash.
					http.Redirect(w, r, path+"/", statusCode)
				} else if path != "/" {
					// We need to remove the slash. This was already done at the
					// beginning of the function.
					http.Redirect(w, r, path, statusCode)
				}
				return
			}
		}
	}

	var paramMap map[string]string
	if len(params) != 0 {
		if len(params) != len(n.leafWildcardNames) {
			// Need better behavior here. Should this be a panic?
			panic(fmt.Sprintf("httptreemux parameter list length mismatch: %v, %v",
				params, n.leafWildcardNames))
		}

		paramMap = make(map[string]string)
		numParams := len(params)
		for index := 0; index < numParams; index++ {
			paramMap[n.leafWildcardNames[numParams-index-1]] = params[index]
		}
	}

	handler(w, r, paramMap)
}