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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,74 +1,3 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "net/http" | ||
| "net/url" | ||
| "testing" | ||
|
|
||
| assert "github.com/stretchr/testify/require" | ||
| ) | ||
|
|
||
| var chargeAllMethod *OpenAPIMethod | ||
| var chargeCreateMethod *OpenAPIMethod | ||
| var chargeDeleteMethod *OpenAPIMethod | ||
| var chargeGetMethod *OpenAPIMethod | ||
| var testSpec *OpenAPISpec | ||
| var testFixtures *Fixtures | ||
|
|
||
| func init() { | ||
| chargeAllMethod = &OpenAPIMethod{} | ||
| chargeCreateMethod = &OpenAPIMethod{} | ||
| chargeDeleteMethod = &OpenAPIMethod{} | ||
| chargeGetMethod = &OpenAPIMethod{} | ||
|
|
||
| testFixtures = | ||
| &Fixtures{ | ||
| Resources: map[ResourceID]interface{}{ | ||
| ResourceID("charge"): map[string]interface{}{"id": "ch_123"}, | ||
| }, | ||
| } | ||
|
|
||
| testSpec = &OpenAPISpec{ | ||
| Definitions: map[string]*JSONSchema{ | ||
| "charge": {XResourceID: "charge"}, | ||
| }, | ||
| Paths: map[OpenAPIPath]map[HTTPVerb]*OpenAPIMethod{ | ||
| OpenAPIPath("/v1/charges"): { | ||
| "get": chargeAllMethod, | ||
| "post": chargeCreateMethod, | ||
| }, | ||
| OpenAPIPath("/v1/charges/{id}"): { | ||
| "get": chargeGetMethod, | ||
| "delete": chargeDeleteMethod, | ||
| }, | ||
| }, | ||
| } | ||
| } | ||
|
|
||
| // --- | ||
|
|
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| func TestStubServerRouteRequest(t *testing.T) { | ||
| server := &StubServer{spec: testSpec} | ||
| server.initializeRouter() | ||
|
|
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| assert.Equal(t, chargeAllMethod, server.routeRequest( | ||
| &http.Request{Method: "GET", URL: &url.URL{Path: "/v1/charges"}})) | ||
| assert.Equal(t, chargeCreateMethod, server.routeRequest( | ||
| &http.Request{Method: "POST", URL: &url.URL{Path: "/v1/charges"}})) | ||
| assert.Equal(t, chargeGetMethod, server.routeRequest( | ||
| &http.Request{Method: "GET", URL: &url.URL{Path: "/v1/charges/ch_123"}})) | ||
| assert.Equal(t, chargeDeleteMethod, server.routeRequest( | ||
| &http.Request{Method: "DELETE", URL: &url.URL{Path: "/v1/charges/ch_123"}})) | ||
|
|
||
| assert.Equal(t, (*OpenAPIMethod)(nil), server.routeRequest( | ||
| &http.Request{Method: "GET", URL: &url.URL{Path: "/v1/doesnt-exist"}})) | ||
| } | ||
|
|
||
| // --- | ||
|
|
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| func TestCompilePath(t *testing.T) { | ||
| assert.Equal(t, `\A/v1/charges\z`, | ||
| compilePath(OpenAPIPath("/v1/charges")).String()) | ||
| assert.Equal(t, `\A/v1/charges/(?P<id>\w+)\z`, | ||
| compilePath(OpenAPIPath("/v1/charges/{id}")).String()) | ||
| } | ||
| import () |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,149 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "log" | ||
| "net/http" | ||
| "regexp" | ||
| "strings" | ||
| "time" | ||
| ) | ||
|
|
||
| // StubServer handles incoming HTTP requests and responds to them appropriately | ||
| // based off the set of OpenAPI routes that it's been configured with. | ||
| type StubServer struct { | ||
| fixtures *Fixtures | ||
| routes map[HTTPVerb][]stubServerRoute | ||
| spec *OpenAPISpec | ||
| } | ||
|
|
||
| // stubServerRoute is a single route in a StubServer's routing table. It has a | ||
| // pattern to match an incoming path and a description of the method that would | ||
| // be executed in the event of a match. | ||
| type stubServerRoute struct { | ||
| pattern *regexp.Regexp | ||
| method *OpenAPIMethod | ||
| } | ||
|
|
||
| func (s *StubServer) routeRequest(r *http.Request) *OpenAPIMethod { | ||
| verbRoutes := s.routes[HTTPVerb(r.Method)] | ||
| for _, route := range verbRoutes { | ||
| if route.pattern.MatchString(r.URL.Path) { | ||
| return route.method | ||
| } | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func (s *StubServer) handleRequest(w http.ResponseWriter, r *http.Request) { | ||
| log.Printf("Request: %v %v", r.Method, r.URL.Path) | ||
| start := time.Now() | ||
|
|
||
| method := s.routeRequest(r) | ||
| if method == nil { | ||
| writeResponse(w, start, http.StatusNotFound, nil) | ||
| return | ||
| } | ||
|
|
||
| response, ok := method.Responses["200"] | ||
| if !ok { | ||
| log.Printf("Couldn't find 200 response in spec") | ||
| writeResponse(w, start, http.StatusInternalServerError, nil) | ||
| return | ||
| } | ||
|
|
||
| if verbose { | ||
| log.Printf("Response schema: %+v", response.Schema) | ||
| } | ||
|
|
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| generator := DataGenerator{s.spec.Definitions, s.fixtures} | ||
| data, err := generator.Generate(response.Schema, r.URL.Path) | ||
| if err != nil { | ||
| log.Printf("Couldn't generate response: %v", err) | ||
| writeResponse(w, start, http.StatusInternalServerError, nil) | ||
| return | ||
| } | ||
| writeResponse(w, start, http.StatusOK, data) | ||
| } | ||
|
|
||
| func (s *StubServer) initializeRouter() { | ||
| var numEndpoints int | ||
| var numPaths int | ||
|
|
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| s.routes = make(map[HTTPVerb][]stubServerRoute) | ||
|
|
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| for path, verbs := range s.spec.Paths { | ||
| numPaths++ | ||
|
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| pathPattern := compilePath(path) | ||
|
|
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| if verbose { | ||
| log.Printf("Compiled path: %v", pathPattern.String()) | ||
| } | ||
|
|
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| for verb, method := range verbs { | ||
| numEndpoints++ | ||
|
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| route := stubServerRoute{ | ||
| pattern: pathPattern, | ||
| method: method, | ||
| } | ||
|
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| // net/http will always give us verbs in uppercase, so build our | ||
| // routing table this way too | ||
| verb = HTTPVerb(strings.ToUpper(string(verb))) | ||
|
|
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| s.routes[verb] = append(s.routes[verb], route) | ||
| } | ||
| } | ||
|
|
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| log.Printf("Routing to %v path(s) and %v endpoint(s)", | ||
| numPaths, numEndpoints) | ||
| } | ||
|
|
||
| // --- | ||
|
|
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| var pathParameterPattern = regexp.MustCompile(`\{(\w+)\}`) | ||
|
|
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| func compilePath(path OpenAPIPath) *regexp.Regexp { | ||
| pattern := `\A` | ||
| parts := strings.Split(string(path), "/") | ||
|
|
||
| for _, part := range parts { | ||
| if part == "" { | ||
| continue | ||
| } | ||
|
|
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| submatches := pathParameterPattern.FindAllStringSubmatch(part, -1) | ||
| if submatches == nil { | ||
| pattern += `/` + part | ||
| } else { | ||
| pattern += `/(?P<` + submatches[0][1] + `>\w+)` | ||
| } | ||
| } | ||
|
|
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| return regexp.MustCompile(pattern + `\z`) | ||
| } | ||
|
|
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| func writeResponse(w http.ResponseWriter, start time.Time, status int, data interface{}) { | ||
| if data == nil { | ||
| data = []byte(http.StatusText(status)) | ||
| } | ||
|
|
||
| encodedData, err := json.Marshal(&data) | ||
| if err != nil { | ||
| log.Printf("Error serializing response: %v", err) | ||
| writeResponse(w, start, http.StatusInternalServerError, nil) | ||
| return | ||
| } | ||
|
|
||
| w.WriteHeader(status) | ||
| _, err = w.Write(encodedData) | ||
| if err != nil { | ||
| log.Printf("Error writing to client: %v", err) | ||
| } | ||
| log.Printf("Response: elapsed=%v status=%v", time.Now().Sub(start), status) | ||
| if verbose { | ||
| log.Printf("Response body: %v", encodedData) | ||
| } | ||
| } |
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