forked from kyma-incubator/compass
/
runtime_client.go
188 lines (163 loc) · 5.2 KB
/
runtime_client.go
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package runtime
import (
"context"
"fmt"
"io/ioutil"
"net/http"
"os"
"time"
"k8s.io/client-go/kubernetes/scheme"
"github.com/kubernetes-incubator/service-catalog/pkg/apis/servicecatalog/v1beta1"
schema "github.com/kyma-incubator/compass/components/provisioner/pkg/gqlschema"
"github.com/kyma-incubator/compass/tests/e2e/provisioning/internal/director"
apiErrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/wait"
graphCli "github.com/machinebox/graphql"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"k8s.io/client-go/tools/clientcmd"
"sigs.k8s.io/controller-runtime/pkg/client"
)
// tenantHeaderName is a header key name for request send by graphQL client
const tenantHeaderName = "tenant"
type Config struct {
ProvisionerURL string `default:"http://compass-provisioner.compass-system.svc.cluster.local:3000/graphql"`
UUAInstanceName string `default:"uaa-issuer"`
UUAInstanceNamespace string `default:"kyma-system"`
}
// Client allows to fetch runtime's config and execute the logic against it
type Client struct {
config Config
httpClient http.Client
directorClient *director.Client
log logrus.FieldLogger
instanceID string
tenantID string
}
func NewClient(config Config, tenantID, instanceID string, clientHttp http.Client, directorClient *director.Client, log logrus.FieldLogger) *Client {
return &Client{
tenantID: tenantID,
instanceID: instanceID,
config: config,
httpClient: clientHttp,
directorClient: directorClient,
log: log,
}
}
type runtimeStatusResponse struct {
Result schema.RuntimeStatus `json:"result"`
}
func (c *Client) EnsureUAAInstanceRemoved() error {
cli, err := c.newRuntimeClient()
if err != nil {
return errors.Wrap(err, "while setting runtime config")
}
err = c.ensureInstanceRemoved(cli)
if err != nil {
return errors.Wrap(err, "while removing UUA instance")
}
c.log.Info("Successfully ensured UAA instance was removed")
return nil
}
func (c *Client) newRuntimeClient() (client.Client, error) {
config, err := c.FetchRuntimeConfig()
if err != nil {
return nil, errors.Wrap(err, "while fetching runtime config")
}
tmpFile, err := c.writeConfigToFile(*config)
if err != nil {
return nil, errors.Wrap(err, "while writing runtime config")
}
defer c.removeFile(tmpFile)
cli, err := newClient(tmpFile)
if err != nil {
return nil, errors.Wrap(err, "while setting client config")
}
return cli, nil
}
func (c *Client) FetchRuntimeConfig() (*string, error) {
runtimeID, err := c.directorClient.GetRuntimeID(c.tenantID, c.instanceID)
if err != nil {
return nil, errors.Wrapf(err, "while getting runtime id from director for instance ID %s", c.instanceID)
}
// setup graphql client
gCli := graphCli.NewClient(c.config.ProvisionerURL, graphCli.WithHTTPClient(&c.httpClient))
// create query
q := fmt.Sprintf(`query {
result: runtimeStatus(id: "%s") {
runtimeConfiguration {
kubeconfig
}
}
}`, runtimeID)
// prepare and run request
req := graphCli.NewRequest(q)
req.Header.Add(tenantHeaderName, c.tenantID)
res := &runtimeStatusResponse{}
err = gCli.Run(context.Background(), req, res)
if err != nil {
return nil, errors.Wrapf(err, "while getting runtime config")
}
if res.Result.RuntimeConfiguration != nil {
return res.Result.RuntimeConfiguration.Kubeconfig, nil
}
return nil, errors.New("kubeconfig shouldn't be nil")
}
func (c *Client) writeConfigToFile(config string) (string, error) {
content := []byte(config)
runtimeConfigTmpFile, err := ioutil.TempFile("", "runtime.*.yaml")
if err != nil {
return "", errors.Wrap(err, "while creating runtime config temp file")
}
if _, err := runtimeConfigTmpFile.Write(content); err != nil {
return "", errors.Wrap(err, "while writing runtime config temp file")
}
if err := runtimeConfigTmpFile.Close(); err != nil {
return "", errors.Wrap(err, "while closing runtime config temp file")
}
return runtimeConfigTmpFile.Name(), nil
}
func newClient(configPath string) (client.Client, error) {
err := v1beta1.AddToScheme(scheme.Scheme)
if err != nil {
return nil, errors.Wrap(err, "while adding schema")
}
config, err := clientcmd.BuildConfigFromFlags("", configPath)
if err != nil {
return nil, errors.Wrapf(err, "while getting kubeconfig under path %s", configPath)
}
cli, err := client.New(config, client.Options{})
if err != nil {
return nil, err
}
return cli, nil
}
func (c *Client) ensureInstanceRemoved(cli client.Client) error {
c.log.Infof("Waiting for %s instance to be removed", c.config.UUAInstanceName)
return wait.Poll(time.Second, 3*time.Minute, func() (bool, error) {
if err := cli.Delete(context.Background(), &v1beta1.ServiceInstance{
ObjectMeta: metav1.ObjectMeta{
Name: c.config.UUAInstanceName,
Namespace: c.config.UUAInstanceNamespace,
},
}); err != nil {
if apiErrors.IsNotFound(err) {
return true, nil
}
c.log.Warnf(errors.Wrap(err, "while removing instance").Error())
}
return false, nil
})
}
func (c *Client) removeFile(fileName string) {
err := os.Remove(fileName)
if err != nil {
c.log.Fatal(err)
}
}
func (c *Client) warnOnError(err error) {
if err != nil {
c.log.Warn(err.Error())
}
}