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@ -5,6 +5,7 @@ import (
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"crypto/x509"
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"encoding/json"
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"fmt"
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log "github.com/Sirupsen/logrus"
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"github.com/parnurzeal/gorequest"
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"net/http"
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"net/url"
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@ -21,10 +22,10 @@ const (
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// Client is a client for the Kubernetes master.
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type Client interface {
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GetIngresses(predicate func(Ingress) bool) ([]Ingress, error)
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GetIngresses(labelSelector string, predicate func(Ingress) bool) ([]Ingress, error)
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GetService(name, namespace string) (Service, error)
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GetEndpoints(name, namespace string) (Endpoints, error)
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WatchAll(stopCh <-chan bool) (chan interface{}, chan error, error)
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WatchAll(labelSelector string, stopCh <-chan bool) (chan interface{}, chan error, error)
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}
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type clientImpl struct {
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@ -50,11 +51,26 @@ func NewClient(baseURL string, caCert []byte, token string) (Client, error) {
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}, nil
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}
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// GetIngresses returns all ingresses in the cluster
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func (c *clientImpl) GetIngresses(predicate func(Ingress) bool) ([]Ingress, error) {
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getURL := c.endpointURL + extentionsEndpoint + defaultIngress
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func makeQueryString(baseParams map[string]string, labelSelector string) (string, error) {
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if labelSelector != "" {
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baseParams["labelSelector"] = labelSelector
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}
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queryData, err := json.Marshal(baseParams)
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if err != nil {
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return "", err
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}
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return string(queryData), nil
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}
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body, err := c.do(c.request(getURL))
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// GetIngresses returns all ingresses in the cluster
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func (c *clientImpl) GetIngresses(labelSelector string, predicate func(Ingress) bool) ([]Ingress, error) {
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getURL := c.endpointURL + extentionsEndpoint + defaultIngress
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queryParams := map[string]string{}
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queryData, err := makeQueryString(queryParams, labelSelector)
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if err != nil {
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return nil, fmt.Errorf("Had problems constructing query string %s : %v", queryParams, err)
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}
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body, err := c.do(c.request(getURL, queryData))
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if err != nil {
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return nil, fmt.Errorf("failed to create ingresses request: GET %q : %v", getURL, err)
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}
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@ -73,16 +89,16 @@ func (c *clientImpl) GetIngresses(predicate func(Ingress) bool) ([]Ingress, erro
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}
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// WatchIngresses returns all ingresses in the cluster
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func (c *clientImpl) WatchIngresses(stopCh <-chan bool) (chan interface{}, chan error, error) {
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func (c *clientImpl) WatchIngresses(labelSelector string, stopCh <-chan bool) (chan interface{}, chan error, error) {
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getURL := c.endpointURL + extentionsEndpoint + defaultIngress
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return c.watch(getURL, stopCh)
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return c.watch(getURL, labelSelector, stopCh)
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}
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// GetService returns the named service from the named namespace
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func (c *clientImpl) GetService(name, namespace string) (Service, error) {
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getURL := c.endpointURL + APIEndpoint + namespaces + namespace + "/services/" + name
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body, err := c.do(c.request(getURL))
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body, err := c.do(c.request(getURL, ""))
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if err != nil {
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return Service{}, fmt.Errorf("failed to create services request: GET %q : %v", getURL, err)
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}
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@ -95,9 +111,9 @@ func (c *clientImpl) GetService(name, namespace string) (Service, error) {
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}
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// WatchServices returns all services in the cluster
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func (c *clientImpl) WatchServices(stopCh <-chan bool) (chan interface{}, chan error, error) {
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func (c *clientImpl) WatchServices(labelSelector string, stopCh <-chan bool) (chan interface{}, chan error, error) {
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getURL := c.endpointURL + APIEndpoint + "/services"
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return c.watch(getURL, stopCh)
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return c.watch(getURL, labelSelector, stopCh)
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}
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// GetEndpoints returns the named Endpoints
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@ -105,7 +121,7 @@ func (c *clientImpl) WatchServices(stopCh <-chan bool) (chan interface{}, chan e
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func (c *clientImpl) GetEndpoints(name, namespace string) (Endpoints, error) {
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getURL := c.endpointURL + APIEndpoint + namespaces + namespace + "/endpoints/" + name
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body, err := c.do(c.request(getURL))
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body, err := c.do(c.request(getURL, ""))
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if err != nil {
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return Endpoints{}, fmt.Errorf("failed to create endpoints request: GET %q : %v", getURL, err)
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}
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@ -118,28 +134,28 @@ func (c *clientImpl) GetEndpoints(name, namespace string) (Endpoints, error) {
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}
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// WatchEndpoints returns endpoints in the cluster
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func (c *clientImpl) WatchEndpoints(stopCh <-chan bool) (chan interface{}, chan error, error) {
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func (c *clientImpl) WatchEndpoints(labelSelector string, stopCh <-chan bool) (chan interface{}, chan error, error) {
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getURL := c.endpointURL + APIEndpoint + "/endpoints"
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return c.watch(getURL, stopCh)
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return c.watch(getURL, labelSelector, stopCh)
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}
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// WatchAll returns events in the cluster
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func (c *clientImpl) WatchAll(stopCh <-chan bool) (chan interface{}, chan error, error) {
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func (c *clientImpl) WatchAll(labelSelector string, stopCh <-chan bool) (chan interface{}, chan error, error) {
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watchCh := make(chan interface{}, 10)
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errCh := make(chan error, 10)
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stopIngresses := make(chan bool)
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chanIngresses, chanIngressesErr, err := c.WatchIngresses(stopIngresses)
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chanIngresses, chanIngressesErr, err := c.WatchIngresses(labelSelector, stopIngresses)
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if err != nil {
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return watchCh, errCh, fmt.Errorf("failed to create watch: %v", err)
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}
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stopServices := make(chan bool)
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chanServices, chanServicesErr, err := c.WatchServices(stopServices)
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chanServices, chanServicesErr, err := c.WatchServices(labelSelector, stopServices)
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if err != nil {
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return watchCh, errCh, fmt.Errorf("failed to create watch: %v", err)
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}
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stopEndpoints := make(chan bool)
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chanEndpoints, chanEndpointsErr, err := c.WatchEndpoints(stopEndpoints)
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chanEndpoints, chanEndpointsErr, err := c.WatchEndpoints(labelSelector, stopEndpoints)
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if err != nil {
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return watchCh, errCh, fmt.Errorf("failed to create watch: %v", err)
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}
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@ -188,22 +204,26 @@ func (c *clientImpl) do(request *gorequest.SuperAgent) ([]byte, error) {
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return body, nil
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}
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func (c *clientImpl) request(url string) *gorequest.SuperAgent {
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func (c *clientImpl) request(reqURL string, queryContent interface{}) *gorequest.SuperAgent {
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// Make request to Kubernetes API
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request := gorequest.New().Get(url)
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parsedURL, parseErr := url.Parse(reqURL)
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if parseErr != nil {
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log.Errorf("Had issues parsing url %s. Trying anyway.", reqURL)
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}
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request := gorequest.New().Get(reqURL)
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request.Transport.DisableKeepAlives = true
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if strings.HasPrefix(url, "http://") {
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return request
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}
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if len(c.token) > 0 {
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request.Header["Authorization"] = "Bearer " + c.token
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if parsedURL.Scheme == "https" {
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pool := x509.NewCertPool()
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pool.AppendCertsFromPEM(c.caCert)
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c.tls = &tls.Config{RootCAs: pool}
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request.TLSClientConfig(c.tls)
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}
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return request.TLSClientConfig(c.tls)
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if len(c.token) > 0 {
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request.Header["Authorization"] = "Bearer " + c.token
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}
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request.Query(queryContent)
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return request
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}
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// GenericObject generic object
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@ -212,12 +232,12 @@ type GenericObject struct {
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ListMeta `json:"metadata,omitempty"`
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}
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func (c *clientImpl) watch(url string, stopCh <-chan bool) (chan interface{}, chan error, error) {
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func (c *clientImpl) watch(url string, labelSelector string, stopCh <-chan bool) (chan interface{}, chan error, error) {
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watchCh := make(chan interface{}, 10)
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errCh := make(chan error, 10)
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// get version
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body, err := c.do(c.request(url))
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body, err := c.do(c.request(url, ""))
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if err != nil {
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return watchCh, errCh, fmt.Errorf("failed to do version request: GET %q : %v", url, err)
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}
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@ -227,10 +247,12 @@ func (c *clientImpl) watch(url string, stopCh <-chan bool) (chan interface{}, ch
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return watchCh, errCh, fmt.Errorf("failed to decode version %v", err)
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}
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resourceVersion := generic.ResourceVersion
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url = url + "?watch&resourceVersion=" + resourceVersion
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// Make request to Kubernetes API
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request := c.request(url)
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queryParams := map[string]string{"watch": "", "resourceVersion": resourceVersion}
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queryData, err := makeQueryString(queryParams, labelSelector)
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if err != nil {
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return watchCh, errCh, fmt.Errorf("Unable to construct query args")
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}
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request := c.request(url, queryData)
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req, err := request.MakeRequest()
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if err != nil {
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return watchCh, errCh, fmt.Errorf("failed to make watch request: GET %q : %v", url, err)
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