Merge pull request #267 from gibizer/fake-keystone-api

Add KeystoneAPI simulator

modules/test-operators/apis/common.go

@@ -0,0 +1,69 @@
+/*
+Copyright 2023 Red Hat
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package apis
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/go-logr/logr"
+)
+
+// Handler defines which URL patter is handled by which function
+type Handler struct {
+	// Pattern is the request URL to handle. If two patters are matching the
+	// same request then the handler for the longer pattern will be executed.
+	// Using the same pattern in two handlers will cause a panic.
+	Pattern string
+	// Func the the function that handles the request by writing a response
+	Func func(http.ResponseWriter, *http.Request)
+}
+
+// APIFixture is a base struct to implement OpenStack API simulators for the
+// EnvTest.
+type APIFixture struct {
+	log        logr.Logger
+	server     *FakeAPIServer
+	ownsServer bool
+	urlBase    string
+}
+
+func (f *APIFixture) logRequest(r *http.Request) {
+	f.log.Info("OpenStack API request", "method", r.Method, "URI", r.RequestURI)
+}
+
+// Cleanup stops the embedded http server if it was created by the fixture
+// during setup
+func (f *APIFixture) Cleanup() {
+	if f.ownsServer {
+		f.server.Cleanup()
+	}
+}
+
+// Endpoint is the URL the fixture's embedded http server listening on
+func (f *APIFixture) Endpoint() string {
+	return f.server.Endpoint() + f.urlBase
+}
+
+func (f *APIFixture) unexpectedRequest(w http.ResponseWriter, r *http.Request) {
+	f.log.Info("Unexpected OpenStackAPI request", "method", r.Method, "URI", r.RequestURI)
+	w.WriteHeader(500)
+	fmt.Fprintf(w, "Unexpected OpenStackAPI request %s %s", r.Method, r.RequestURI)
+}
+
+func (f *APIFixture) internalError(err error, msg string, w http.ResponseWriter, r *http.Request) {
+	f.log.Info("Internal error", "method", r.Method, "URI", r.RequestURI, "error", err, "message", msg)
+	w.WriteHeader(500)
+	fmt.Fprintf(w, "Internal error in %s %s: %s: %v", r.Method, r.RequestURI, msg, err)
+}