82 lines
2.0 KiB
Go
82 lines
2.0 KiB
Go
/*
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Copyright 2014 Google Inc. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package client
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import (
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"encoding/json"
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"fmt"
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"io/ioutil"
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"net"
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"net/http"
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"strconv"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
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)
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// PodInfoGetter is an interface for things that can get information about a pod's containers.
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// Injectable for easy testing.
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type PodInfoGetter interface {
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// GetPodInfo returns information about all containers which are part
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// Returns an api.PodInfo, or an error if one occurs.
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GetPodInfo(host, podID string) (api.PodInfo, error)
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}
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// The default implementation, accesses the kubelet over HTTP
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type HTTPPodInfoGetter struct {
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Client *http.Client
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Port uint
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}
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func (c *HTTPPodInfoGetter) GetPodInfo(host, podID string) (api.PodInfo, error) {
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request, err := http.NewRequest(
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"GET",
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fmt.Sprintf(
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"http://%s/podInfo?podID=%s",
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net.JoinHostPort(host, strconv.FormatUint(uint64(c.Port), 10)),
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podID),
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nil)
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if err != nil {
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return nil, err
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}
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response, err := c.Client.Do(request)
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if err != nil {
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return nil, err
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}
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defer response.Body.Close()
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body, err := ioutil.ReadAll(response.Body)
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if err != nil {
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return nil, err
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}
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// Check that this data can be unmarshalled
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info := api.PodInfo{}
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err = json.Unmarshal(body, &info)
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if err != nil {
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return nil, err
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}
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return info, nil
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}
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// Useful for testing.
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type FakePodInfoGetter struct {
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data api.PodInfo
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err error
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}
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func (c *FakePodInfoGetter) GetPodInfo(host, podID string) (api.PodInfo, error) {
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return c.data, c.err
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}
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