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// Copyright 2017 The Kubernetes Authors. | ||
// | ||
// 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. | ||
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package common | ||
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import ( | ||
"bytes" | ||
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api "k8s.io/api/core/v1" | ||
) | ||
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// Endpoint describes an endpoint that is host and a list of available ports for that host. | ||
type Endpoint struct { | ||
// Hostname, either as a domain name or IP address. | ||
Host string `json:"host"` | ||
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// List of ports opened for this endpoint on the hostname. | ||
Ports []ServicePort `json:"ports"` | ||
} | ||
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// GetExternalEndpoints returns endpoints that are externally reachable for a service. | ||
func GetExternalEndpoints(service *api.Service) []Endpoint { | ||
var externalEndpoints []Endpoint | ||
if service.Spec.Type == api.ServiceTypeLoadBalancer { | ||
for _, ingress := range service.Status.LoadBalancer.Ingress { | ||
externalEndpoints = append(externalEndpoints, getExternalEndpoint(ingress, service.Spec.Ports)) | ||
} | ||
} | ||
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for _, ip := range service.Spec.ExternalIPs { | ||
externalEndpoints = append(externalEndpoints, Endpoint{ | ||
Host: ip, | ||
Ports: GetServicePorts(service.Spec.Ports), | ||
}) | ||
} | ||
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return externalEndpoints | ||
} | ||
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// GetInternalEndpoint returns internal endpoint name for the given service properties, e.g., | ||
// "my-service.namespace 80/TCP" or "my-service 53/TCP,53/UDP". | ||
func GetInternalEndpoint(serviceName, namespace string, ports []api.ServicePort) Endpoint { | ||
name := serviceName | ||
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if namespace != api.NamespaceDefault && len(namespace) > 0 && len(serviceName) > 0 { | ||
bufferName := bytes.NewBufferString(name) | ||
bufferName.WriteString(".") | ||
bufferName.WriteString(namespace) | ||
name = bufferName.String() | ||
} | ||
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return Endpoint{ | ||
Host: name, | ||
Ports: GetServicePorts(ports), | ||
} | ||
} | ||
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// Returns external endpoint name for the given service properties. | ||
func getExternalEndpoint(ingress api.LoadBalancerIngress, ports []api.ServicePort) Endpoint { | ||
var host string | ||
if ingress.Hostname != "" { | ||
host = ingress.Hostname | ||
} else { | ||
host = ingress.IP | ||
} | ||
return Endpoint{ | ||
Host: host, | ||
Ports: GetServicePorts(ports), | ||
} | ||
} |
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// Copyright 2017 The Kubernetes Authors. | ||
// | ||
// 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. | ||
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package common | ||
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import api "k8s.io/api/core/v1" | ||
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// ServicePort is a pair of port and protocol, e.g. a service endpoint. | ||
type ServicePort struct { | ||
// Positive port number. | ||
Port int32 `json:"port"` | ||
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// Protocol name, e.g., TCP or UDP. | ||
Protocol api.Protocol `json:"protocol"` | ||
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// The port on each node on which service is exposed. | ||
NodePort int32 `json:"nodePort"` | ||
} | ||
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// GetServicePorts returns human readable name for the given service ports list. | ||
func GetServicePorts(apiPorts []api.ServicePort) []ServicePort { | ||
var ports []ServicePort | ||
for _, port := range apiPorts { | ||
ports = append(ports, ServicePort{port.Port, port.Protocol, port.NodePort}) | ||
} | ||
return ports | ||
} |
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