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Allow different param names in different methods with same path scheme #2209

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merged 5 commits into from Jul 11, 2022
Merged

Allow different param names in different methods with same path scheme #2209

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3e45d2a
Change methodHandler element type to methodContext
ortyomka Jun 29, 2022
d9b49f8
Allow different param names in the smae path with different methods
ortyomka Jun 29, 2022
5ec1f7e
Rename methodContext to routeMethod
ortyomka Jul 6, 2022
83a5acc
Add backtracking to nearest path
ortyomka Jul 8, 2022
627588a
Remove params from NotAllowed
ortyomka Jul 8, 2022
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64 changes: 39 additions & 25 deletions router.go
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Expand Up @@ -13,6 +13,9 @@ type (
routes map[string]*Route
echo *Echo
}
methodContext struct {
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I do not think that context describes this struct correctly. In world of http servers and Echo context is something more temporary. I have used routeMethod in v5 for similar struct but in v5 methodHandler struct is also renamed to routeMethods.

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Renamed to routeMethod

handler HandlerFunc
}
node struct {
kind kind
label byte
Expand All @@ -32,17 +35,17 @@ type (
kind uint8
children []*node
methodHandler struct {
connect HandlerFunc
delete HandlerFunc
get HandlerFunc
head HandlerFunc
options HandlerFunc
patch HandlerFunc
post HandlerFunc
propfind HandlerFunc
put HandlerFunc
trace HandlerFunc
report HandlerFunc
connect *methodContext
delete *methodContext
get *methodContext
head *methodContext
options *methodContext
patch *methodContext
post *methodContext
propfind *methodContext
put *methodContext
trace *methodContext
report *methodContext
allowHeader string
}
)
Expand Down Expand Up @@ -209,7 +212,9 @@ func (r *Router) insert(method, path string, h HandlerFunc, t kind, ppath string
currentNode.prefix = search
if h != nil {
currentNode.kind = t
currentNode.addHandler(method, h)
currentNode.addHandler(method, &methodContext{
handler: h,
})
currentNode.ppath = ppath
currentNode.pnames = pnames
}
Expand Down Expand Up @@ -257,13 +262,17 @@ func (r *Router) insert(method, path string, h HandlerFunc, t kind, ppath string
if lcpLen == searchLen {
// At parent node
currentNode.kind = t
currentNode.addHandler(method, h)
currentNode.addHandler(method, &methodContext{
handler: h,
})
currentNode.ppath = ppath
currentNode.pnames = pnames
} else {
// Create child node
n = newNode(t, search[lcpLen:], currentNode, nil, new(methodHandler), ppath, pnames, nil, nil)
n.addHandler(method, h)
n.addHandler(method, &methodContext{
handler: h,
})
// Only Static children could reach here
currentNode.addStaticChild(n)
}
Expand All @@ -278,7 +287,9 @@ func (r *Router) insert(method, path string, h HandlerFunc, t kind, ppath string
}
// Create child node
n := newNode(t, search, currentNode, nil, new(methodHandler), ppath, pnames, nil, nil)
n.addHandler(method, h)
n.addHandler(method, &methodContext{
handler: h,
})
switch t {
case staticKind:
currentNode.addStaticChild(n)
Expand All @@ -291,7 +302,9 @@ func (r *Router) insert(method, path string, h HandlerFunc, t kind, ppath string
} else {
// Node already exists
if h != nil {
currentNode.addHandler(method, h)
currentNode.addHandler(method, &methodContext{
handler: h,
})
currentNode.ppath = ppath
if len(currentNode.pnames) == 0 { // Issue #729
currentNode.pnames = pnames
Expand Down Expand Up @@ -345,7 +358,12 @@ func (n *node) findChildWithLabel(l byte) *node {
return nil
}

func (n *node) addHandler(method string, h HandlerFunc) {
func (n *node) addHandler(method string, h *methodContext) {
if h.handler == nil {
n.isHandler = n.methodHandler.isHandler()
return
}

switch method {
case http.MethodConnect:
n.methodHandler.connect = h
Expand All @@ -372,14 +390,10 @@ func (n *node) addHandler(method string, h HandlerFunc) {
}

n.methodHandler.updateAllowHeader()
if h != nil {
n.isHandler = true
} else {
n.isHandler = n.methodHandler.isHandler()
}
n.isHandler = true
}

func (n *node) findHandler(method string) HandlerFunc {
func (n *node) findHandler(method string) *methodContext {
switch method {
case http.MethodConnect:
return n.methodHandler.connect
Expand Down Expand Up @@ -530,7 +544,7 @@ func (r *Router) Find(method, path string, c Context) {
previousBestMatchNode = currentNode
}
if h := currentNode.findHandler(method); h != nil {
matchedHandler = h
matchedHandler = h.handler
break
}
}
Expand Down Expand Up @@ -581,7 +595,7 @@ func (r *Router) Find(method, path string, c Context) {
previousBestMatchNode = currentNode
}
if h := currentNode.findHandler(method); h != nil {
matchedHandler = h
matchedHandler = h.handler
break
}
}
Expand Down
2 changes: 1 addition & 1 deletion router_test.go
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Expand Up @@ -2380,7 +2380,7 @@ func TestRouterHandleMethodOptions(t *testing.T) {
assert.NoError(t, err)
assert.Equal(t, tc.expectStatus, rec.Code)
}
assert.Equal(t, tc.expectAllowHeader, c.Response().Header().Get("Allow"))
assert.Equal(t, tc.expectAllowHeader, c.Response().Header().Get(HeaderAllow))
})
}
}
Expand Down