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binding.go
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binding.go
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package binding
import (
"fmt"
"path/filepath"
bindingApis "github.com/redhat-developer/service-binding-operator/apis"
bindingApi "github.com/redhat-developer/service-binding-operator/apis/binding/v1alpha1"
specApi "github.com/redhat-developer/service-binding-operator/apis/spec/v1alpha3"
"github.com/devfile/library/pkg/devfile/parser"
devfilefs "github.com/devfile/library/pkg/testingutil/filesystem"
"gopkg.in/yaml.v2"
kerrors "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/api/meta"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
devfilev1alpha2 "github.com/devfile/api/v2/pkg/apis/workspaces/v1alpha2"
parsercommon "github.com/devfile/library/pkg/devfile/parser/data/v2/common"
"github.com/redhat-developer/odo/pkg/api"
"github.com/redhat-developer/odo/pkg/binding/asker"
backendpkg "github.com/redhat-developer/odo/pkg/binding/backend"
"github.com/redhat-developer/odo/pkg/kclient"
"github.com/redhat-developer/odo/pkg/libdevfile"
)
type BindingClient struct {
// Backends
flagsBackend *backendpkg.FlagsBackend
interactiveBackend *backendpkg.InteractiveBackend
// Clients
kubernetesClient kclient.ClientInterface
}
var _ Client = (*BindingClient)(nil)
func NewBindingClient(kubernetesClient kclient.ClientInterface) *BindingClient {
// We create the asker client and the backends here and not at the CLI level, as we want to hide these details to the CLI
askerClient := asker.NewSurveyAsker()
return &BindingClient{
flagsBackend: backendpkg.NewFlagsBackend(),
interactiveBackend: backendpkg.NewInteractiveBackend(askerClient, kubernetesClient),
kubernetesClient: kubernetesClient,
}
}
// GetFlags gets the flag specific to add binding operation so that it can correctly decide on the backend to be used
// It ignores all the flags except the ones specific to add binding operation, for e.g. verbosity flag
func (o *BindingClient) GetFlags(flags map[string]string) map[string]string {
bindingFlags := map[string]string{}
for flag, value := range flags {
if flag == backendpkg.FLAG_NAME ||
flag == backendpkg.FLAG_WORKLOAD ||
flag == backendpkg.FLAG_SERVICE ||
flag == backendpkg.FLAG_BIND_AS_FILES {
bindingFlags[flag] = value
}
}
return bindingFlags
}
func (o *BindingClient) GetServiceInstances() (map[string]unstructured.Unstructured, error) {
isServiceBindingInstalled, err := o.kubernetesClient.IsServiceBindingSupported()
if err != nil {
return nil, err
}
if !isServiceBindingInstalled {
//revive:disable:error-strings This is a top-level error message displayed as is to the end user
return nil, fmt.Errorf("Service Binding Operator is not installed on the cluster, please ensure it is installed before proceeding. See installation instructions: https://odo.dev/docs/overview/cluster-setup/")
//revive:enable:error-strings
}
// Get the BindableKinds/bindable-kinds object
bindableKind, err := o.kubernetesClient.GetBindableKinds()
if err != nil {
return nil, err
}
// get a list of restMappings of all the GVKs present in bindableKind's Status
bindableKindRestMappings, err := o.kubernetesClient.GetBindableKindStatusRestMapping(bindableKind.Status)
if err != nil {
return nil, err
}
var bindableObjectMap = map[string]unstructured.Unstructured{}
for _, restMapping := range bindableKindRestMappings {
// TODO: Debug into why List returns all the versions instead of the GVR version
// List all the instances of the restMapping object
resources, err := o.kubernetesClient.ListDynamicResources(restMapping.Resource)
if err != nil {
return nil, err
}
for _, item := range resources.Items {
// format: `<name> (<kind>.<group>)`
serviceName := fmt.Sprintf("%s (%s.%s)", item.GetName(), item.GetKind(), item.GroupVersionKind().Group)
bindableObjectMap[serviceName] = item
}
}
return bindableObjectMap, nil
}
// GetBindingsFromDevfile returns all ServiceBinding resources declared as Kubernertes component from a Devfile
// from group binding.operators.coreos.com/v1alpha1 or servicebinding.io/v1alpha3
func (o *BindingClient) GetBindingsFromDevfile(devfileObj parser.DevfileObj, context string) ([]api.ServiceBinding, error) {
result := []api.ServiceBinding{}
kubeComponents, err := devfileObj.Data.GetComponents(parsercommon.DevfileOptions{
ComponentOptions: parsercommon.ComponentOptions{
ComponentType: devfilev1alpha2.KubernetesComponentType,
},
})
if err != nil {
return nil, err
}
for _, component := range kubeComponents {
strCRD, err := libdevfile.GetK8sManifestWithVariablesSubstituted(devfileObj, component.Name, context, devfilefs.DefaultFs{})
if err != nil {
return nil, err
}
u := unstructured.Unstructured{}
if err := yaml.Unmarshal([]byte(strCRD), &u.Object); err != nil {
return nil, err
}
switch u.GetObjectKind().GroupVersionKind() {
case bindingApi.GroupVersionKind:
var sbo bindingApi.ServiceBinding
err := kclient.ConvertUnstructuredToResource(u, &sbo)
if err != nil {
return nil, err
}
sb, err := o.kubernetesClient.APIServiceBindingFromBinding(sbo)
if err != nil {
return nil, err
}
sb.Status, err = o.getStatusFromBinding(sb.Name)
if err != nil {
return nil, err
}
result = append(result, sb)
case specApi.GroupVersion.WithKind("ServiceBinding"):
var sbc specApi.ServiceBinding
err := kclient.ConvertUnstructuredToResource(u, &sbc)
if err != nil {
return nil, err
}
sb := o.kubernetesClient.APIServiceBindingFromSpec(sbc)
sb.Status, err = o.getStatusFromSpec(sb.Name)
if err != nil {
return nil, err
}
result = append(result, sb)
}
}
return result, nil
}
// GetBindingFromCluster returns the ServiceBinding resource with the given name
// from the cluster, from group binding.operators.coreos.com/v1alpha1 or servicebinding.io/v1alpha3
func (o *BindingClient) GetBindingFromCluster(name string) (api.ServiceBinding, error) {
bindingSB, err := o.kubernetesClient.GetBindingServiceBinding(name)
if err == nil {
var sb api.ServiceBinding
sb, err = o.kubernetesClient.APIServiceBindingFromBinding(bindingSB)
if err != nil {
return api.ServiceBinding{}, err
}
sb.Status, err = o.getStatusFromBinding(bindingSB.Name)
if err != nil {
return api.ServiceBinding{}, err
}
return sb, nil
}
if err != nil && !kerrors.IsNotFound(err) {
return api.ServiceBinding{}, err
}
specSB, err := o.kubernetesClient.GetSpecServiceBinding(name)
if err == nil {
sb := o.kubernetesClient.APIServiceBindingFromSpec(specSB)
sb.Status, err = o.getStatusFromSpec(specSB.Name)
if err != nil {
return api.ServiceBinding{}, err
}
return sb, nil
}
// In case of notFound error, this time we return the error
if kerrors.IsNotFound(err) {
return api.ServiceBinding{}, fmt.Errorf("ServiceBinding %q not found", name)
}
return api.ServiceBinding{}, err
}
// getStatusFromBinding returns status information from a ServiceBinding in the cluster
// from group binding.operators.coreos.com/v1alpha1
func (o *BindingClient) getStatusFromBinding(name string) (*api.ServiceBindingStatus, error) {
bindingSB, err := o.kubernetesClient.GetBindingServiceBinding(name)
if err != nil {
if kerrors.IsNotFound(err) {
return nil, nil
}
return nil, err
}
if injected := meta.IsStatusConditionTrue(bindingSB.Status.Conditions, bindingApis.InjectionReady); !injected {
return nil, nil
}
secretName := bindingSB.Status.Secret
secret, err := o.kubernetesClient.GetSecret(secretName, o.kubernetesClient.GetCurrentNamespace())
if err != nil {
return nil, err
}
bindings := make([]string, 0, len(secret.Data))
if bindingSB.Spec.BindAsFiles {
for k := range secret.Data {
bindingName := filepath.ToSlash(filepath.Join("${SERVICE_BINDING_ROOT}", name, k))
bindings = append(bindings, bindingName)
}
return &api.ServiceBindingStatus{
BindingFiles: bindings,
}, nil
}
for k := range secret.Data {
bindings = append(bindings, k)
}
return &api.ServiceBindingStatus{
BindingEnvVars: bindings,
}, nil
}
// getStatusFromSpec returns status information from a ServiceBinding in the cluster
// from group servicebinding.io/v1alpha3
func (o *BindingClient) getStatusFromSpec(name string) (*api.ServiceBindingStatus, error) {
specSB, err := o.kubernetesClient.GetSpecServiceBinding(name)
if err != nil {
if kerrors.IsNotFound(err) {
return nil, nil
}
return nil, err
}
if injected := meta.IsStatusConditionTrue(specSB.Status.Conditions, bindingApis.InjectionReady); !injected {
return nil, nil
}
if specSB.Status.Binding == nil {
return nil, nil
}
secretName := specSB.Status.Binding.Name
secret, err := o.kubernetesClient.GetSecret(secretName, o.kubernetesClient.GetCurrentNamespace())
if err != nil {
return nil, err
}
bindingFiles := make([]string, 0, len(secret.Data))
bindingEnvVars := make([]string, 0, len(specSB.Spec.Env))
for k := range secret.Data {
bindingName := filepath.ToSlash(filepath.Join("${SERVICE_BINDING_ROOT}", name, k))
bindingFiles = append(bindingFiles, bindingName)
}
for _, env := range specSB.Spec.Env {
bindingEnvVars = append(bindingEnvVars, env.Name)
}
return &api.ServiceBindingStatus{
BindingFiles: bindingFiles,
BindingEnvVars: bindingEnvVars,
}, nil
}