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Support http and https appProtocol for Kubernetes Service

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This commit is contained in:
Will Da Silva 2024-10-09 10:26:04 -04:00 • committed by GitHub
parent c441d04788
commit e9d677f8cb
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4 changed files with 47 additions and 17 deletions
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27
pkg/provider/kubernetes/gateway/grpcroute.go
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@ -2,6 +2,7 @@ package gateway
import (
"context"
"errors"
"fmt"
"net"
"strconv"
@ -337,14 +338,15 @@ func (p *Provider) loadGRPCServers(namespace string, route *gatev1.GRPCRoute, ba
}
}
if svcPort.AppProtocol != nil && *svcPort.AppProtocol != appProtocolH2C {
protocol, err := getGRPCServiceProtocol(svcPort)
if err != nil {
return nil, &metav1.Condition{
Type: string(gatev1.RouteConditionResolvedRefs),
Status: metav1.ConditionFalse,
ObservedGeneration: route.Generation,
LastTransitionTime: metav1.Now(),
Reason: string(gatev1.RouteReasonUnsupportedProtocol),
Message: fmt.Sprintf("Cannot load GRPCBackendRef %s/%s: only kubernetes.io/h2c appProtocol is supported", namespace, backendRef.Name),
Message: fmt.Sprintf("Cannot load GRPCBackendRef %s/%s: only \"kubernetes.io/h2c\" and \"https\" appProtocol is supported", namespace, backendRef.Name),
}
}
@ -353,7 +355,7 @@ func (p *Provider) loadGRPCServers(namespace string, route *gatev1.GRPCRoute, ba
for _, ba := range backendAddresses {
lb.Servers = append(lb.Servers, dynamic.Server{
URL: fmt.Sprintf("h2c://%s", net.JoinHostPort(ba.IP, strconv.Itoa(int(ba.Port)))),
URL: fmt.Sprintf("%s://%s", protocol, net.JoinHostPort(ba.IP, strconv.Itoa(int(ba.Port)))),
})
}
return lb, nil
@ -408,3 +410,22 @@ func buildGRPCHeaderRules(headers []gatev1.GRPCHeaderMatch) []string {
return rules
}
func getGRPCServiceProtocol(portSpec corev1.ServicePort) (string, error) {
if portSpec.Protocol != corev1.ProtocolTCP {
return "", errors.New("only TCP protocol is supported")
}
if portSpec.AppProtocol == nil {
return schemeH2C, nil
}
switch ap := *portSpec.AppProtocol; ap {
case appProtocolH2C:
return schemeH2C, nil
case appProtocolHTTPS:
return schemeHTTPS, nil
default:
return "", fmt.Errorf("unsupported application protocol %s", ap)
}
}