513cebe7b7
* Add Virtual Kubelet provider for VIC Initial virtual kubelet provider for VMware VIC. This provider currently handles creating and starting of a pod VM via the VIC portlayer and persona server. Image store handling via the VIC persona server. This provider currently requires the feature/wolfpack branch of VIC. * Added pod stop and delete. Also added node capacity. Added the ability to stop and delete pod VMs via VIC. Also retrieve node capacity information from the VCH. * Cleanup and readme file Some file clean up and added a Readme.md markdown file for the VIC provider. * Cleaned up errors, added function comments, moved operation code 1. Cleaned up error handling. Set standard for creating errors. 2. Added method prototype comments for all interface functions. 3. Moved PodCreator, PodStarter, PodStopper, and PodDeleter to a new folder. * Add mocking code and unit tests for podcache, podcreator, and podstarter Used the unit test framework used in VIC to handle assertions in the provider's unit test. Mocking code generated using OSS project mockery, which is compatible with the testify assertion framework. * Vendored packages for the VIC provider Requires feature/wolfpack branch of VIC and a few specific commit sha of projects used within VIC. * Implementation of POD Stopper and Deleter unit tests (#4) * Updated files for initial PR
114 lines
3.1 KiB
Go
114 lines
3.1 KiB
Go
package vic
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"io/ioutil"
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"net/http"
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"time"
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"github.com/vmware/vic/pkg/trace"
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)
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type CreateResponse struct {
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Id string `json:"Id"`
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Warnings string `json:"Warnings"`
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}
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// Super simplistic docker client for the virtual kubelet to perform some operations
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type DockerClient interface {
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Ping(op trace.Operation) error
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CreateContainer(op trace.Operation, config string) error
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PullImage(op trace.Operation, image string) error
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}
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type VicDockerClient struct {
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serverAddr string
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}
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func NewVicDockerClient(personaAddr string) DockerClient {
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return &VicDockerClient{
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serverAddr: personaAddr,
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}
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}
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func (v *VicDockerClient) Ping(op trace.Operation) error {
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personaServer := fmt.Sprintf("http://%s/v1.35/info", v.serverAddr)
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resp, err := http.Get(personaServer)
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if err != nil {
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op.Errorf("Ping failed: error = %s", err.Error())
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return err
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}
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if resp.StatusCode >= 300 {
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op.Errorf("Ping failed: status = %d", resp.StatusCode)
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return fmt.Errorf("Server Error")
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}
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return nil
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}
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func (v *VicDockerClient) CreateContainer(op trace.Operation, config string) error {
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personaServer := fmt.Sprintf("http://%s/v1.35/containers/create", v.serverAddr)
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reader := bytes.NewBuffer([]byte(config))
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resp, err := http.Post(personaServer, "application/json", reader)
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if err != nil {
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op.Errorf("Error from from docker create: error = %s", err.Error())
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return err
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}
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if resp.StatusCode >= 300 {
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op.Errorf("Error from from docker create: status = %d", resp.StatusCode)
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return fmt.Errorf("Image not found")
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}
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defer resp.Body.Close()
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body, err := ioutil.ReadAll(resp.Body)
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op.Infof("Response from docker create: status = %d", resp.StatusCode)
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op.Infof("Response from docker create: body = %s", string(body))
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var createResp CreateResponse
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err = json.Unmarshal(body, &createResp)
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if err != nil {
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op.Errorf("Failed to unmarshal response from container create post")
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return err
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}
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startContainerUrl := fmt.Sprintf("http://%s/v1.35/containers/%s/start", v.serverAddr, createResp.Id)
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op.Infof("Starting container with request - %s", startContainerUrl)
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_, err = http.Post(startContainerUrl, "", nil)
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if err != nil {
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op.Errorf("Failed to start container %s", createResp.Id)
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return err
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}
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return nil
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}
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func (v *VicDockerClient) PullImage(op trace.Operation, image string) error {
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pullClient := &http.Client{Timeout: 60 * time.Second}
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personaServer := fmt.Sprintf("http://%s/v1.35/images/create?fromImage=%s", v.serverAddr, image)
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op.Infof("POST %s", personaServer)
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reader := bytes.NewBuffer([]byte(""))
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resp, err := pullClient.Post(personaServer, "application/json", reader)
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if err != nil {
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op.Errorf("Error from docker pull: error = %s", err.Error())
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return err
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}
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defer resp.Body.Close()
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if resp.StatusCode != 200 {
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msg := fmt.Sprintf("Error from docker pull: status = %d", resp.StatusCode)
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op.Errorf(msg)
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return fmt.Errorf(msg)
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}
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body, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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msg := fmt.Sprintf("Error reading docker pull response: error = %s", err.Error())
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op.Errorf(msg)
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return fmt.Errorf(msg)
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}
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op.Infof("Response from docker pull: body = %s", string(body))
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return nil
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}
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