Added GetServiceBinding to the broker client

controllers/controllers/services/osbapi/client.go

@@ -298,6 +298,36 @@ func (c *Client) Unbind(ctx context.Context, payload UnbindPayload) (UnbindRespo
 	return response, nil
 }
 
+func (c *Client) GetServiceBinding(ctx context.Context, payload BindPayload) (BindingResponse, error) {
+	statusCode, respBytes, err := c.newBrokerRequester().
+		forBroker(c.broker).
+		sendRequest(
+			ctx,
+			"/v2/service_instances/"+payload.InstanceID+"/service_bindings/"+payload.BindingID,
+			http.MethodGet,
+			map[string]string{
+				"service_id": payload.ServiceId,
+				"plan_id":    payload.PlanID,
+			},
+			nil,
+		)
+	if err != nil {
+		return BindingResponse{}, fmt.Errorf("fetching service binding failed: %w", err)
+	}
+
+	if statusCode == http.StatusNotFound {
+		return BindingResponse{}, UnrecoverableError{Status: statusCode}
+	}
+
+	response := BindingResponse{}
+	err = json.Unmarshal(respBytes, &response)
+	if err != nil {
+		return BindingResponse{}, fmt.Errorf("failed to unmarshal response: %w", err)
+	}
+
+	return response, nil
+}
+
 func payloadToReader(payload any) (io.Reader, error) {
 	if payload == nil {
 		return nil, nil

controllers/controllers/services/osbapi/client_test.go

@@ -4,6 +4,7 @@ import (
 	"crypto/tls"
 	"encoding/base64"
 	"encoding/json"
+	"fmt"
 	"io"
 	"net/http"
 	"strconv"
@@ -619,6 +620,67 @@ var _ = Describe("OSBAPI Client", func() {
 			})
 		})
 
+		Describe("GetServiceBinding", func() {
+			var (
+				bindingResp osbapi.BindingResponse
+				getBindErr  error
+			)
+			BeforeEach(func() {
+				brokerServer.WithResponse(
+					"/v2/service_instances/{instance_id}/service_bindings/{binding_id}",
+					map[string]any{
+						"parameters": map[string]string{
+							"billing-account": "abcde12345",
+						},
+					},
+					http.StatusOK,
+				)
+			})
+			JustBeforeEach(func() {
+				bindingResp, getBindErr = brokerClient.GetServiceBinding(ctx, osbapi.BindPayload{
+					InstanceID: "my-service-instance",
+					BindingID:  "my-binding-id",
+					BindRequest: osbapi.BindRequest{
+						ServiceId: "my-service-offering-id",
+						PlanID:    "my-plan-id",
+					},
+				})
+			})
+
+			It("gets the service binding", func() {
+				Expect(getBindErr).NotTo(HaveOccurred())
+
+				requests := brokerServer.ServedRequests()
+				Expect(requests).To(HaveLen(1))
+				Expect(requests[0].Method).To(Equal(http.MethodGet))
+				Expect(requests[0].URL.Path).To(Equal("/v2/service_instances/my-service-instance/service_bindings/my-binding-id"))
+				Expect(requests[0].URL.Query()).To(BeEquivalentTo(map[string][]string{
+					"service_id": {"my-service-offering-id"},
+					"plan_id":    {"my-plan-id"},
+				}))
+
+				Expect(bindingResp).To(Equal(osbapi.BindingResponse{
+					Parameters: map[string]any{
+						"billing-account": "abcde12345",
+					},
+				}))
+			})
+
+			When("the service binding does not exist", func() {
+				BeforeEach(func() {
+					brokerServer = brokerServer.WithResponse(
+						"/v2/service_instances/{instance_id}/service_bindings/{binding_id}",
+						nil,
+						http.StatusNotFound,
+					)
+				})
+
+				It("returns an error", func() {
+					Expect(getBindErr).To(MatchError(ContainSubstring(fmt.Sprintf("The server responded with status: %d", http.StatusNotFound))))
+				})
+			})
+		})
+
 		Describe("GetServiceBindingLastOperation", func() {
 			var (
 				lastOpResp osbapi.LastOperationResponse

controllers/controllers/services/osbapi/clientfactory.go

@@ -24,6 +24,7 @@ type BrokerClient interface {
 	Bind(context.Context, BindPayload) (BindResponse, error)
 	Unbind(context.Context, UnbindPayload) (UnbindResponse, error)
 	GetServiceBindingLastOperation(context.Context, GetBindingLastOperationRequest) (LastOperationResponse, error)
+	GetServiceBinding(ctx context.Context, payload BindPayload) (BindingResponse, error)
 }
 
 //counterfeiter:generate -o fake -fake-name BrokerClientFactory code.cloudfoundry.org/korifi/controllers/controllers/services/osbapi.BrokerClientFactory

controllers/controllers/services/osbapi/types.go

@@ -118,6 +118,10 @@ type BindResponse struct {
 	IsAsync     bool
 }
 
+type BindingResponse struct {
+	Parameters map[string]any `json:"parameters"`
+}
+
 type BindResource struct {
 	AppGUID string `json:"app_guid"`
 }

tests/assets/sample-broker-golang/main.go

@@ -31,6 +31,7 @@ func main() {
 	http.HandleFunc("GET /v2/service_instances/{id}/last_operation", getLastOperationHandler)
 
 	http.HandleFunc("PUT /v2/service_instances/{instance_id}/service_bindings/{binding_id}", bindHandler)
+	http.HandleFunc("GET /v2/service_instances/{instance_id}/service_bindings/{binding_id}", getBindingHandler)
 	http.HandleFunc("DELETE /v2/service_instances/{instance_id}/service_bindings/{binding_id}", unbindHandler)
 	http.HandleFunc("GET /v2/service_instances/{instance_id}/service_bindings/{binding_id}/last_operation", getLastOperationHandler)
 
@@ -107,6 +108,21 @@ func deprovisionServiceInstanceHandler(w http.ResponseWriter, r *http.Request) {
 	asyncOperation(w, fmt.Sprintf("deprovision-%s", r.PathValue("id")), "{}")
 }
 
+func getBindingHandler(w http.ResponseWriter, r *http.Request) {
+	logRequest(r)
+
+	if status, err := checkCredentials(w, r); err != nil {
+		respond(w, status, fmt.Sprintf("Credentials check failed: %v", err))
+		return
+	}
+
+	respond(w, http.StatusOK, `{
+		"parameters": {
+			"billing-account": "abcde12345"
+		}
+	}`)
+}
+
 func bindHandler(w http.ResponseWriter, r *http.Request) {
 	logRequest(r)