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add cadvisor client v2 dependency

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Zhou Fang 2016-08-03 14:04:24 -07:00
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"Comment": "v0.23.2-79-gc6c06d4",
"Rev": "c6c06d440ab2fcaae9211dda6dcbbaa1e98a054b"
},
{
"ImportPath": "github.com/google/cadvisor/client/v2",
"Comment": "v0.23.2-79-gc6c06d4",
"Rev": "c6c06d440ab2fcaae9211dda6dcbbaa1e98a054b"
},
{
"ImportPath": "github.com/google/cadvisor/collector",
"Comment": "v0.23.2-79-gc6c06d4",

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@ -33571,6 +33571,204 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
================================================================================
================================================================================
= vendor/github.com/google/cadvisor/client/v2 licensed under: =
Copyright 2014 The cAdvisor 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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http://www.apache.org/licenses/
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= vendor/github.com/google/cadvisor/LICENSE e7790b946bfacb700e8a8f2baedb3205 -
================================================================================
================================================================================
= vendor/github.com/google/cadvisor/collector licensed under: =

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# Example REST API Client
This is an implementation of a cAdvisor REST API in Go. You can use it like this:
```go
client, err := client.NewClient("http://192.168.59.103:8080/")
```
Obviously, replace the URL with the path to your actual cAdvisor REST endpoint.
### MachineInfo
```go
client.MachineInfo()
```
There is no v2 MachineInfo API, so the v2 client exposes the [v1 MachineInfo](../../info/v1/machine.go#L131)
```
(*v1.MachineInfo)(0xc208022b10)({
NumCores: (int) 4,
MemoryCapacity: (int64) 2106028032,
Filesystems: ([]v1.FsInfo) (len=1 cap=4) {
(v1.FsInfo) {
Device: (string) (len=9) "/dev/sda1",
Capacity: (uint64) 19507089408
}
}
})
```
You can see the full specification of the [MachineInfo struct in the source](../../info/v1/machine.go#L131)
### VersionInfo
```go
client.VersionInfo()
```
This method returns the cAdvisor version.
### Attributes
```go
client.Attributes()
```
This method returns a [cadvisor/info/v2/Attributes](../../info/v2/machine.go#L24) struct with all the fields filled in. Attributes includes hardware attributes (as returned by MachineInfo) as well as software attributes (eg. software versions). Here is an example return value:
```
(*v2.Attributes)({
KernelVersion: (string) (len=17) "3.13.0-44-generic"
ContainerOsVersion: (string) (len=18) "Ubuntu 14.04.1 LTS"
DockerVersion: (string) (len=9) "1.5.0-rc4"
CadvisorVersion: (string) (len=6) "0.10.1"
NumCores: (int) 4,
MemoryCapacity: (int64) 2106028032,
Filesystems: ([]v2.FsInfo) (len=1 cap=4) {
(v2.FsInfo) {
Device: (string) (len=9) "/dev/sda1",
Capacity: (uint64) 19507089408
}
}
})
```
You can see the full specification of the [Attributes struct in the source](../../info/v2/machine.go#L24)

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// Copyright 2015 Google Inc. All Rights Reserved.
//
// 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.
// Client library to programmatically access cAdvisor API.
package v2
import (
"bytes"
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
"net/url"
"path"
"strconv"
"strings"
v1 "github.com/google/cadvisor/info/v1"
"github.com/google/cadvisor/info/v2"
)
// Client represents the base URL for a cAdvisor client.
type Client struct {
baseUrl string
}
// NewClient returns a new client with the specified base URL.
func NewClient(url string) (*Client, error) {
if !strings.HasSuffix(url, "/") {
url += "/"
}
return &Client{
baseUrl: fmt.Sprintf("%sapi/v2.1/", url),
}, nil
}
// MachineInfo returns the JSON machine information for this client.
// A non-nil error result indicates a problem with obtaining
// the JSON machine information data.
func (self *Client) MachineInfo() (minfo *v1.MachineInfo, err error) {
u := self.machineInfoUrl()
ret := new(v1.MachineInfo)
if err = self.httpGetJsonData(ret, nil, u, "machine info"); err != nil {
return
}
minfo = ret
return
}
// MachineStats returns the JSON machine statistics for this client.
// A non-nil error result indicates a problem with obtaining
// the JSON machine information data.
func (self *Client) MachineStats() ([]v2.MachineStats, error) {
var ret []v2.MachineStats
u := self.machineStatsUrl()
err := self.httpGetJsonData(&ret, nil, u, "machine stats")
return ret, err
}
// VersionInfo returns the version info for cAdvisor.
func (self *Client) VersionInfo() (version string, err error) {
u := self.versionInfoUrl()
version, err = self.httpGetString(u, "version info")
return
}
// Attributes returns hardware and software attributes of the machine.
func (self *Client) Attributes() (attr *v2.Attributes, err error) {
u := self.attributesUrl()
ret := new(v2.Attributes)
if err = self.httpGetJsonData(ret, nil, u, "attributes"); err != nil {
return
}
attr = ret
return
}
// Stats returns stats for the requested container.
func (self *Client) Stats(name string, request *v2.RequestOptions) (map[string]v2.ContainerInfo, error) {
u := self.statsUrl(name)
ret := make(map[string]v2.ContainerInfo)
data := url.Values{
"type": []string{request.IdType},
"count": []string{strconv.Itoa(request.Count)},
"recursive": []string{strconv.FormatBool(request.Recursive)},
}
u = fmt.Sprintf("%s?%s", u, data.Encode())
if err := self.httpGetJsonData(&ret, nil, u, "stats"); err != nil {
return nil, err
}
return ret, nil
}
func (self *Client) machineInfoUrl() string {
return self.baseUrl + path.Join("machine")
}
func (self *Client) machineStatsUrl() string {
return self.baseUrl + path.Join("machinestats")
}
func (self *Client) versionInfoUrl() string {
return self.baseUrl + path.Join("version")
}
func (self *Client) attributesUrl() string {
return self.baseUrl + path.Join("attributes")
}
func (self *Client) statsUrl(name string) string {
return self.baseUrl + path.Join("stats", name)
}
func (self *Client) httpGetResponse(postData interface{}, urlPath, infoName string) ([]byte, error) {
var resp *http.Response
var err error
if postData != nil {
data, marshalErr := json.Marshal(postData)
if marshalErr != nil {
return nil, fmt.Errorf("unable to marshal data: %v", marshalErr)
}
resp, err = http.Post(urlPath, "application/json", bytes.NewBuffer(data))
} else {
resp, err = http.Get(urlPath)
}
if err != nil {
return nil, fmt.Errorf("unable to post %q to %q: %v", infoName, urlPath, err)
}
if resp == nil {
return nil, fmt.Errorf("received empty response for %q from %q", infoName, urlPath)
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
err = fmt.Errorf("unable to read all %q from %q: %v", infoName, urlPath, err)
return nil, err
}
if resp.StatusCode != 200 {
return nil, fmt.Errorf("request %q failed with error: %q", urlPath, strings.TrimSpace(string(body)))
}
return body, nil
}
func (self *Client) httpGetString(url, infoName string) (string, error) {
body, err := self.httpGetResponse(nil, url, infoName)
if err != nil {
return "", err
}
return string(body), nil
}
func (self *Client) httpGetJsonData(data, postData interface{}, url, infoName string) error {
body, err := self.httpGetResponse(postData, url, infoName)
if err != nil {
return err
}
if err = json.Unmarshal(body, data); err != nil {
err = fmt.Errorf("unable to unmarshal %q (Body: %q) from %q with error: %v", infoName, string(body), url, err)
return err
}
return nil
}