Migrate example to the new webrpc errors

Author: VojtechVitek

_examples/petStore/Makefile

@@ -6,7 +6,7 @@ proto: generate
 generate:
 	go generate ./...
 
-run-server:
+run:
 	@echo "Running server. You can test it with:"
 	@echo "$$ go test --serverUrl=http://localhost:8080 ./..."
 	@echo

_examples/petStore/README.md

@@ -7,7 +7,7 @@
     ```
 3. Run server
     ```
-    $ make run-server
+    $ make run
     ```
 4. Run client tests
     ```

_examples/petStore/proto/api.go

@@ -9,13 +9,12 @@ import (
 	"github.com/google/uuid"
 )
 
-// -- debug: go:webrpc json -out=./petstore.gen.json
-// -- debug: go:webrpc debug -out=./petstore.debug.gen.txt
-//
 //go:webrpc golang -server -pkg=proto -json=stdlib -types=false -out=./server.gen.go
 //go:webrpc golang -client -pkg=client -json=stdlib -out=./client/petstore.gen.go
 //go:webrpc typescript -client -out=./client/petstore.gen.ts
 //go:webrpc openapi -out=./petstore.gen.yaml
+//go:disabled json -out=./petstore.gen.json
+//go:disabled debug -out=./petstore.debug.gen.txt
 type PetStore interface {
 	GetPet(ctx context.Context, ID int64) (pet *Pet, err error)
 	ListPets(ctx context.Context) (pets []*Pet, err error)

_examples/petStore/proto/errors.go

@@ -0,0 +1,13 @@
+package proto
+
+var (
+	// General.
+	ErrTODO           = WebRPCError{Code: 1000, Name: "NotImplemented", Message: "TODO: Not implemented", HTTPStatus: 500}
+	ErrDeprecated     = WebRPCError{Code: 1001, Name: "Deprecated", Message: "Endpoint is deprecated", HTTPStatus: 410}
+	ErrRateLimited    = WebRPCError{Code: 1002, Name: "RateLimited", Message: "Rate limited. Please, slow down", HTTPStatus: 429}
+	ErrInvalidRequest = WebRPCError{Code: 1003, Name: "InvalidRequest", Message: "Invalid request", HTTPStatus: 400}
+	ErrUnexpected     = WebRPCError{Code: 1004, Name: "Unexpected", Message: "Unexpected server error", HTTPStatus: 500}
+
+	// Pets.
+	ErrPetNotFound = WebRPCError{Code: 2000, Name: "PetNotFound", Message: "Pet not found", HTTPStatus: 400}
+)

_examples/petStore/server/pets.go

@@ -9,7 +9,7 @@ import (
 func (s *API) GetPet(ctx context.Context, ID int64) (pet *proto.Pet, err error) {
 	pet, ok := s.PetStore[ID]
 	if !ok {
-		return nil, proto.ErrorNotFound("pet(%v) not found", ID)
+		return nil, proto.ErrPetNotFound.WithCausef("pet id(%v) not found", ID)
 	}
 	return pet, nil
 }
@@ -25,7 +25,7 @@ func (s *API) ListPets(ctx context.Context) (pets []*proto.Pet, err error) {
 
 func (s *API) CreatePet(ctx context.Context, pet *proto.Pet) (*proto.Pet, error) {
 	if pet == nil {
-		return nil, proto.ErrorInvalidArgument("pet", "pet is required")
+		return nil, proto.ErrInvalidRequest.WithCausef("pet is required")
 	}
 
 	s.mu.Lock()
@@ -40,15 +40,15 @@ func (s *API) CreatePet(ctx context.Context, pet *proto.Pet) (*proto.Pet, error)
 
 func (s *API) UpdatePet(ctx context.Context, ID int64, pet *proto.Pet) (*proto.Pet, error) {
 	if pet == nil {
-		return nil, proto.ErrorInvalidArgument("pet", "pet is required")
+		return nil, proto.ErrInvalidRequest.WithCausef("pet is required")
 	}
 
 	s.mu.Lock()
 	defer s.mu.Unlock()
 
 	_, ok := s.PetStore[pet.ID]
 	if !ok {
-		return nil, proto.ErrorNotFound("pet(%v) not found", ID)
+		return nil, proto.ErrPetNotFound.WithCausef("pet id(%v) not found", ID)
 	}
 
 	s.PetStore[pet.ID] = pet