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package exposure
import (
"cmp"
"context"
"errors"
"fmt"
"net/http"
"strings"
commonv1 "github.com/johnandersen777/socialweb-computer-kcp/api/common/v1alpha1"
exposurev1alpha1 "github.com/johnandersen777/socialweb-computer-kcp/api/exposure/v1alpha1"
"github.com/johnandersen777/socialweb-computer-kcp/internal/component"
)
var ErrUnknownProtocol = errors.New("unknown protocol")
func Target(ref commonv1.ObjectRef, workspace string) (component.Key, error) {
kind := strings.TrimSpace(ref.Kind)
name := strings.TrimSpace(ref.Name)
if kind == "" {
return component.Key{}, errors.New("the targetRef has no kind")
}
if name == "" {
return component.Key{}, errors.New("the targetRef has no name")
}
targetWorkspace := cmp.Or(strings.TrimSpace(ref.Workspace), workspace)
return component.Key{Workspace: targetWorkspace, Kind: kind, Name: name}, nil
}
func protocolKind(value exposurev1alpha1.ServiceProtocol) string {
return strings.ToLower(strings.TrimSpace(string(value)))
}
func HandlerName(value string) string {
value = strings.TrimSpace(value)
if value == "" {
return component.DefaultHandlerName
}
return value
}
func FindHandler(ctx context.Context, handlers *component.Handlers, key component.Key, protocol exposurev1alpha1.ServiceProtocol, name string) (http.Handler, bool, error) {
if handlers == nil {
return nil, false, nil
}
switch protocolKind(protocol) {
case component.ProtocolHTTP, component.ProtocolWS:
handler, ok := handlers.Handler(key, name)
return handler, ok, nil
case component.ProtocolTCP, component.ProtocolSSH:
conn, err := handlers.DialStream(ctx, key, name)
if err != nil {
if errors.Is(err, component.ErrNoStream) || errors.Is(err, component.ErrHandlersStopped) {
return nil, false, nil
}
return nil, false, err
}
_ = conn.Close()
return nil, true, nil
default:
return nil, false, fmt.Errorf("%w %q", ErrUnknownProtocol, protocol)
}
}
func Endpoints(registry *component.Registry, key component.Key) []string {
if registry == nil {
return nil
}
seen := map[string]bool{}
var out []string
for _, endpoint := range registry.Endpoints(key.Workspace, key.Kind, key.Name) {
value := strings.TrimSpace(endpoint.URL)
if value == "" && endpoint.Address != "" {
protocol := strings.TrimSpace(endpoint.Protocol)
if protocol != "" {
value = protocol + "://" + endpoint.Address
} else {
value = endpoint.Address
}
}
if value == "" || seen[value] {
continue
}
seen[value] = true
out = append(out, value)
}
return out
}
