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Merge pull request #111618 from Jiawei0227/flocker

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cleanup: Remove flocker volume plugins from k8s codebase
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Kubernetes Prow Robot
2022-08-02 09:16:16 -07:00
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parent c718f64b3f ff063889a7
commit 70dcb0f129
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190
vendor/github.com/clusterhq/flocker-go/LICENSE generated vendored
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You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
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reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
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Copyright 2014-2016 ClusterHQ
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18
vendor/github.com/clusterhq/flocker-go/README.md generated vendored
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flocker-go
==========
[![circleci](https://circleci.com/gh/ClusterHQ/flocker-go.svg)](https://circleci.com/gh/ClusterHQ/flocker-go)
flocker-go implements the package `flocker` that will let you easily interact
with a Flocker Control Service.
What can it do?
---------------
You can check the package documentation here: https://godoc.org/github.com/ClusterHQ/flocker-go
TODO
----
- Define a proper interface `flockerClientable` with all the needed methods for
wrapping the Flocker API.

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vendor/github.com/clusterhq/flocker-go/circle.yml generated vendored
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machine:
timezone:
America/Los_Angeles
# Output the test output to circle.
test:
pre:
- go get -u github.com/jstemmer/go-junit-report
override:
- go test -coverprofile=coverage.out -v -race ./... > test.out
- cat test.out | go-junit-report > report.xml
- go tool cover -func=coverage.out
post:
- mv test.out $CIRCLE_ARTIFACTS/
- mv report.xml $CIRCLE_TEST_REPORTS/

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vendor/github.com/clusterhq/flocker-go/client.go generated vendored
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package flocker
import (
"bytes"
"encoding/json"
"errors"
"fmt"
"io"
"net/http"
"time"
)
// From https://github.com/ClusterHQ/flocker-docker-plugin/blob/master/flockerdockerplugin/adapter.py#L18
const defaultVolumeSize = json.Number("107374182400")
var (
// A volume can take a long time to be available, if we don't want
// Kubernetes to wait forever we need to stop trying after some time, that
// time is defined here
timeoutWaitingForVolume = 2 * time.Minute
tickerWaitingForVolume = 5 * time.Second
errStateNotFound = errors.New("State not found by Dataset ID")
errConfigurationNotFound = errors.New("Configuration not found by Name")
errFlockerControlServiceHost = errors.New("The volume config must have a key CONTROL_SERVICE_HOST defined in the OtherAttributes field")
errFlockerControlServicePort = errors.New("The volume config must have a key CONTROL_SERVICE_PORT defined in the OtherAttributes field")
errVolumeAlreadyExists = errors.New("The volume already exists")
errVolumeDoesNotExist = errors.New("The volume does not exist")
errUpdatingDataset = errors.New("It was impossible to update the dataset")
)
// Clientable exposes the needed methods to implement your own Flocker Client.
type Clientable interface {
CreateDataset(options *CreateDatasetOptions) (*DatasetState, error)
DeleteDataset(datasetID string) error
GetDatasetState(datasetID string) (*DatasetState, error)
GetDatasetID(metaName string) (datasetID string, err error)
GetPrimaryUUID() (primaryUUID string, err error)
ListNodes() (nodes []NodeState, err error)
UpdatePrimaryForDataset(primaryUUID, datasetID string) (*DatasetState, error)
}
// Client is a default Flocker Client.
type Client struct {
*http.Client
schema string
host string
port int
version string
clientIP string
maximumSize json.Number
}
var _ Clientable = &Client{}
// NewClient creates a wrapper over http.Client to communicate with the flocker control service.
func NewClient(host string, port int, clientIP string, caCertPath, keyPath, certPath string) (*Client, error) {
client, err := newTLSClient(caCertPath, keyPath, certPath)
if err != nil {
return nil, err
}
return &Client{
Client: client,
schema: "https",
host: host,
port: port,
version: "v1",
maximumSize: defaultVolumeSize,
clientIP: clientIP,
}, nil
}
/*
request do a request using the http.Client embedded to the control service
and returns the response or an error in case it happens.
Note: you will need to deal with the response body call to Close if you
don't want to deal with problems later.
*/
func (c Client) request(method, url string, payload interface{}) (*http.Response, error) {
var (
b []byte
err error
)
if method == "POST" { // Just allow payload on POST
b, err = json.Marshal(payload)
if err != nil {
return nil, err
}
}
req, err := http.NewRequest(method, url, bytes.NewBuffer(b))
if err != nil {
return nil, err
}
req.Header.Set("Content-Type", "application/json")
// REMEMBER TO CLOSE THE BODY IN THE OUTSIDE FUNCTION
return c.Do(req)
}
// post performs a post request with the indicated payload
func (c Client) post(url string, payload interface{}) (*http.Response, error) {
return c.request("POST", url, payload)
}
// delete performs a delete request with the indicated payload
func (c Client) delete(url string, payload interface{}) (*http.Response, error) {
return c.request("DELETE", url, payload)
}
// get performs a get request
func (c Client) get(url string) (*http.Response, error) {
return c.request("GET", url, nil)
}
// getURL returns a full URI to the control service
func (c Client) getURL(path string) string {
return fmt.Sprintf("%s://%s:%d/%s/%s", c.schema, c.host, c.port, c.version, path)
}
type configurationPayload struct {
Deleted bool `json:"deleted"`
Primary string `json:"primary"`
DatasetID string `json:"dataset_id,omitempty"`
MaximumSize json.Number `json:"maximum_size,omitempty"`
Metadata metadataPayload `json:"metadata,omitempty"`
}
type CreateDatasetOptions struct {
Primary string `json:"primary"`
DatasetID string `json:"dataset_id,omitempty"`
MaximumSize int64 `json:"maximum_size,omitempty"`
Metadata map[string]string `json:"metadata,omitempty"`
}
type metadataPayload struct {
Name string `json:"name,omitempty"`
}
type DatasetState struct {
Path string `json:"path"`
DatasetID string `json:"dataset_id"`
Primary string `json:"primary,omitempty"`
MaximumSize json.Number `json:"maximum_size,omitempty"`
}
type datasetStatePayload struct {
*DatasetState
}
type NodeState struct {
UUID string `json:"uuid"`
Host string `json:"host"`
}
// findIDInConfigurationsPayload returns the datasetID if it was found in the
// configurations payload, otherwise it will return an error.
func (c Client) findIDInConfigurationsPayload(body io.ReadCloser, name string) (datasetID string, err error) {
var configurations []configurationPayload
if err = json.NewDecoder(body).Decode(&configurations); err == nil {
for _, r := range configurations {
if r.Metadata.Name == name {
return r.DatasetID, nil
}
}
return "", errConfigurationNotFound
}
return "", err
}
// ListNodes returns a list of dataset agent nodes from Flocker Control Service
func (c *Client) ListNodes() (nodes []NodeState, err error) {
resp, err := c.get(c.getURL("state/nodes"))
if err != nil {
return []NodeState{}, err
}
defer resp.Body.Close()
if resp.StatusCode >= 300 {
return []NodeState{}, fmt.Errorf("Expected: {1,2}xx listing nodes, got: %d", resp.StatusCode)
}
err = json.NewDecoder(resp.Body).Decode(&nodes)
if err != nil {
return []NodeState{}, err
}
return nodes, err
}
// GetPrimaryUUID returns the UUID of the primary Flocker Control Service for
// the given host.
func (c Client) GetPrimaryUUID() (uuid string, err error) {
states, err := c.ListNodes()
if err != nil {
return "", err
}
for _, s := range states {
if s.Host == c.clientIP {
return s.UUID, nil
}
}
return "", fmt.Errorf("No node found with IP '%s', available nodes %+v", c.clientIP, states)
}
// DeleteDataset performs a delete request to the given datasetID
func (c *Client) DeleteDataset(datasetID string) error {
url := c.getURL(fmt.Sprintf("configuration/datasets/%s", datasetID))
resp, err := c.delete(url, nil)
if err != nil {
return err
}
defer resp.Body.Close()
if resp.StatusCode >= 300 {
return fmt.Errorf("Expected: {1,2}xx deleting the dataset %s, got: %d", datasetID, resp.StatusCode)
}
return nil
}
// GetDatasetState performs a get request to get the state of the given datasetID, if
// something goes wrong or the datasetID was not found it returns an error.
func (c Client) GetDatasetState(datasetID string) (*DatasetState, error) {
resp, err := c.get(c.getURL("state/datasets"))
if err != nil {
return nil, err
}
defer resp.Body.Close()
var states []datasetStatePayload
if err = json.NewDecoder(resp.Body).Decode(&states); err == nil {
for _, s := range states {
if s.DatasetID == datasetID {
return s.DatasetState, nil
}
}
return nil, errStateNotFound
}
return nil, err
}
/*
CreateDataset creates a volume in Flocker, waits for it to be ready and
returns the dataset id.
This process is a little bit complex but follows this flow:
1. Find the Flocker Control Service UUID
2. If it already exists an error is returned
3. If it didn't previously exist, wait for it to be ready
*/
func (c *Client) CreateDataset(options *CreateDatasetOptions) (datasetState *DatasetState, err error) {
// 1) Find the primary Flocker UUID
// Note: it could be cached, but doing this query we health check it
if options.Primary == "" {
options.Primary, err = c.GetPrimaryUUID()
if err != nil {
return nil, err
}
}
if options.MaximumSize == 0 {
options.MaximumSize, _ = c.maximumSize.Int64()
}
resp, err := c.post(c.getURL("configuration/datasets"), options)
if err != nil {
return nil, err
}
defer resp.Body.Close()
// 2) Return if the dataset was previously created
if resp.StatusCode == http.StatusConflict {
return nil, errVolumeAlreadyExists
}
if resp.StatusCode >= 300 {
return nil, fmt.Errorf("Expected: {1,2}xx creating the volume, got: %d", resp.StatusCode)
}
var p configurationPayload
if err := json.NewDecoder(resp.Body).Decode(&p); err != nil {
return nil, err
}
// 3) Wait until the dataset is ready for usage. In case it never gets
// ready there is a timeoutChan that will return an error
timeoutChan := time.NewTimer(timeoutWaitingForVolume).C
tickChan := time.NewTicker(tickerWaitingForVolume).C
for {
var strErrDel string
s, err := c.GetDatasetState(p.DatasetID)
if err == nil {
return s, nil
} else if err != errStateNotFound {
errDel := c.DeleteDataset(p.DatasetID)
if errDel != nil {
strErrDel = fmt.Sprintf(", deletion of dataset failed with %s", errDel)
}
return nil, fmt.Errorf("Flocker API error during dataset creation (datasetID %s): %s%s", p.DatasetID, err, strErrDel)
}
select {
case <-timeoutChan:
errDel := c.DeleteDataset(p.DatasetID)
if errDel != nil {
strErrDel = fmt.Sprintf(", deletion of dataset failed with %s", errDel)
}
return nil, fmt.Errorf("Flocker API timeout during dataset creation (datasetID %s): %s%s", p.DatasetID, err, strErrDel)
case <-tickChan:
break
}
}
}
// UpdatePrimaryForDataset will update the Primary for the given dataset
// returning the current DatasetState.
func (c Client) UpdatePrimaryForDataset(newPrimaryUUID, datasetID string) (*DatasetState, error) {
payload := struct {
Primary string `json:"primary"`
}{
Primary: newPrimaryUUID,
}
url := c.getURL(fmt.Sprintf("configuration/datasets/%s", datasetID))
resp, err := c.post(url, payload)
if err != nil {
return nil, err
}
defer resp.Body.Close()
if resp.StatusCode >= 300 {
return nil, errUpdatingDataset
}
var s DatasetState
if err := json.NewDecoder(resp.Body).Decode(&s); err != nil {
return nil, err
}
return &s, nil
}
// GetDatasetID will return the DatasetID found for the given metadata name.
func (c Client) GetDatasetID(metaName string) (datasetID string, err error) {
resp, err := c.get(c.getURL("configuration/datasets"))
if err != nil {
return "", err
}
defer resp.Body.Close()
var configurations []configurationPayload
if err = json.NewDecoder(resp.Body).Decode(&configurations); err == nil {
for _, c := range configurations {
if c.Metadata.Name == metaName && c.Deleted == false {
return c.DatasetID, nil
}
}
return "", errConfigurationNotFound
}
return "", err
}

2
vendor/github.com/clusterhq/flocker-go/doc.go generated vendored
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// flocker package allows you to easily interact with a Flocker Control Service.
package flocker

34
vendor/github.com/clusterhq/flocker-go/util.go generated vendored
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package flocker
import (
"crypto/tls"
"crypto/x509"
"io/ioutil"
"net/http"
)
// newTLSClient returns a new TLS http client
func newTLSClient(caCertPath, keyPath, certPath string) (*http.Client, error) {
// Client certificate
cert, err := tls.LoadX509KeyPair(certPath, keyPath)
if err != nil {
return nil, err
}
// CA certificate
caCert, err := ioutil.ReadFile(caCertPath)
if err != nil {
return nil, err
}
caCertPool := x509.NewCertPool()
caCertPool.AppendCertsFromPEM(caCert)
tlsConfig := &tls.Config{
Certificates: []tls.Certificate{cert},
RootCAs: caCertPool,
}
tlsConfig.BuildNameToCertificate()
transport := &http.Transport{TLSClientConfig: tlsConfig}
return &http.Client{Transport: transport}, nil
}