Enable prefix based routing (#2047)

* Enable prefix based routing

Signed-off-by: Harsh Thakur <harshthakur9030@gmail.com>

* Optimize checking condition

Signed-off-by: Sanket Sudake <sanketsudake@gmail.com>

* Disable few tests

* disable router modification for now

* run code generator

* Collect fission dump in CI

* Enable all tests back

Signed-off-by: Sanket Sudake <sanketsudake@gmail.com>

* Remove unwanted code

Signed-off-by: Sanket Sudake <sanketsudake@gmail.com>

* Add prefix support at more places and couple of todo's

Signed-off-by: Sanket Sudake <sanketsudake@gmail.com>

* Few more changes

Signed-off-by: Sanket Sudake <sanketsudake@gmail.com>

* Improve function trim support

* Support for prefix based urls in fission function test

Signed-off-by: Sanket Sudake <sanketsudake@gmail.com>

* multi route for fission function test

Signed-off-by: Sanket Sudake <sanketsudake@gmail.com>

* Improve validations in trigger creations

* Adjust leading / in url from fission

Signed-off-by: Sanket Sudake <sanketsudake@gmail.com>

* Change suburl to subpath for function test

Signed-off-by: Sanket Sudake <sanketsudake@gmail.com>

Co-authored-by: Sanket Sudake <sanketsudake@gmail.com>

pkg/apis/core/v1/types.go

@@ -648,8 +648,16 @@ type (
 		Host string `json:"host"`
 
 		// RelativeURL is the exposed URL for external client to access a function with.
+		// +optional
 		RelativeURL string `json:"relativeurl"`
 
+		// Prefix with which functions are exposed.
+		// NOTE: Prefix takes precedence over URL/RelativeURL.
+		// Note that it does not treat slashes specially ("/foobar/" will be matched by
+		// the prefix "/foobar").
+		// +optional
+		Prefix *string `json:"prefix,omitempty"`
+
 		// HTTP method to access a function.
 		// +optional
 		Method string `json:"method"`

pkg/apis/core/v1/zz_generated.deepcopy.go

@@ -507,6 +507,11 @@ func (in *HTTPTriggerList) DeepCopyObject() runtime.Object {
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *HTTPTriggerSpec) DeepCopyInto(out *HTTPTriggerSpec) {
 	*out = *in
+	if in.Prefix != nil {
+		in, out := &in.Prefix, &out.Prefix
+		*out = new(string)
+		**out = **in
+	}
 	in.FunctionReference.DeepCopyInto(&out.FunctionReference)
 	in.IngressConfig.DeepCopyInto(&out.IngressConfig)
 	return