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client.go
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client.go
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package client
import (
"context"
"fmt"
"net/http"
"net/http/httputil"
"github.com/bndr/gojenkins"
)
type (
JenkinsAccessor interface {
GetCurrentUsage(ctx context.Context) (int64, error)
DeleteNode(ctx context.Context, name string) (bool, error)
GetAllNodes(ctx context.Context) (Nodes, error)
GetNode(ctx context.Context, name string) (*gojenkins.Node, error)
}
WrapperClient struct {
*gojenkins.Jenkins
opt *Options
}
Nodes map[string]*gojenkins.Node
Options struct {
JenkinsURL string `config:"jenkins_url" validate:"required"`
JenkinsUser string `config:"jenkins_user" validate:"required"`
JenkinsToken string `config:"jenkins_token" validate:"required"`
ControllerNodeName string `config:"controller_node_name"`
NodeNumExecutors int64 `config:"node_num_executors"`
}
)
// New returns a new Client.
func New(opt *Options) *WrapperClient {
return &WrapperClient{
opt: opt,
Jenkins: gojenkins.CreateJenkins(
nil,
opt.JenkinsURL,
opt.JenkinsUser,
opt.JenkinsToken,
),
}
}
// GetCurrentUsage return the current usage of jenkins nodes.
func (c *WrapperClient) GetCurrentUsage(ctx context.Context) (int64, error) {
computers, err := c.computers(ctx)
if err != nil {
return 0, err
}
nodes := c.getNodes(computers).
ExcludeNode(c.opt.ControllerNodeName).
ExcludeOffline()
currentUsage := int64((float64(computers.BusyExecutors) / float64(nodes.Len()*c.opt.NodeNumExecutors)) * 100)
return currentUsage, nil
}
func (c *WrapperClient) getNodes(computers *gojenkins.Computers) Nodes {
nodes := make(Nodes, len(computers.Computers))
for _, node := range computers.Computers {
nodes[node.DisplayName] = &gojenkins.Node{Jenkins: c.Jenkins, Raw: node, Base: "/computer/" + node.DisplayName}
}
return nodes
}
func (c *WrapperClient) GetAllNodes(ctx context.Context) (Nodes, error) {
computers, err := c.computers(ctx)
if err != nil {
return nil, err
}
return c.getNodes(computers), nil
}
func (n Nodes) Len() int64 {
return int64(len(n))
}
func (n Nodes) IsExist(name string) (*gojenkins.Node, bool) {
if node, ok := n[name]; ok {
return node, true
}
return nil, false
}
func (n Nodes) ExcludeOffline() Nodes {
nodes := make(Nodes, 0)
for name, node := range n {
if node.Raw.Offline == true {
continue
}
nodes[name] = node
}
return nodes
}
func (n Nodes) ExcludeNode(name string) Nodes {
nodes := make(Nodes, 0)
for i, node := range n {
if name == node.Raw.DisplayName {
continue
}
nodes[i] = node
}
return nodes
}
func (c *WrapperClient) computers(ctx context.Context) (*gojenkins.Computers, error) {
computers := new(gojenkins.Computers)
qr := map[string]string{
"depth": "1",
}
res, err := c.Requester.GetJSON(ctx, "/computer", computers, qr)
if err != nil {
return nil, err
}
if res.StatusCode != http.StatusOK {
body, _ := httputil.DumpResponse(res, true)
return nil, fmt.Errorf("api response status code %d, body dump: %q", res.StatusCode, body)
}
return computers, nil
}
func (o *Options) Name() string {
return "jenkins client"
}