|
| 1 | +package catalog |
| 2 | + |
| 3 | +import ( |
| 4 | + "encoding/json" |
| 5 | + "fmt" |
| 6 | + |
| 7 | + "github.com/operator-framework/api/pkg/operators/v1alpha1" |
| 8 | + "github.com/operator-framework/operator-registry/pkg/configmap" |
| 9 | + errorwrap "github.com/pkg/errors" |
| 10 | + "github.com/sirupsen/logrus" |
| 11 | + v1 "k8s.io/client-go/listers/core/v1" |
| 12 | + |
| 13 | + "github.com/operator-framework/operator-lifecycle-manager/pkg/controller/registry/resolver" |
| 14 | +) |
| 15 | + |
| 16 | +// ManifestResolver can dereference a manifest for a step. Steps may embed manifests directly or reference content |
| 17 | +// in configmaps |
| 18 | +type ManifestResolver interface { |
| 19 | + ManifestForStep(step *v1alpha1.Step) (string, error) |
| 20 | +} |
| 21 | + |
| 22 | +// manifestResolver caches manifest from unpacked bundles (via configmaps) |
| 23 | +type manifestResolver struct { |
| 24 | + configMapLister v1.ConfigMapLister |
| 25 | + unpackedSteps map[string][]v1alpha1.StepResource |
| 26 | + namespace string |
| 27 | + logger logrus.FieldLogger |
| 28 | +} |
| 29 | + |
| 30 | +func newManifestResolver(namespace string, configMapLister v1.ConfigMapLister, logger logrus.FieldLogger) *manifestResolver { |
| 31 | + return &manifestResolver{ |
| 32 | + namespace: namespace, |
| 33 | + configMapLister: configMapLister, |
| 34 | + unpackedSteps: map[string][]v1alpha1.StepResource{}, |
| 35 | + logger: logger, |
| 36 | + } |
| 37 | +} |
| 38 | + |
| 39 | +// ManifestForStep always returns the manifest that should be applied to the cluster for a given step |
| 40 | +// the manifest field in the installplan status can contain a reference to a configmap instead |
| 41 | +func (r *manifestResolver) ManifestForStep(step *v1alpha1.Step) (string, error) { |
| 42 | + manifest := step.Resource.Manifest |
| 43 | + ref := refForStep(step, r.logger) |
| 44 | + if ref == nil { |
| 45 | + return manifest, nil |
| 46 | + } |
| 47 | + |
| 48 | + log := r.logger.WithFields(logrus.Fields{"resolving": step.Resolving, "step": step.Resource.Name}) |
| 49 | + log.WithField("ref", ref).Debug("step is a reference to configmap") |
| 50 | + |
| 51 | + usteps, err := r.unpackedStepsForBundle(step.Resolving, ref) |
| 52 | + if err != nil { |
| 53 | + return "", err |
| 54 | + } |
| 55 | + |
| 56 | + log.Debugf("checking cache for unpacked step") |
| 57 | + // need to find the real manifest from the unpacked steps |
| 58 | + for _, u := range usteps { |
| 59 | + if u.Name == step.Resource.Name && |
| 60 | + u.Kind == step.Resource.Kind && |
| 61 | + u.Version == step.Resource.Version && |
| 62 | + u.Group == step.Resource.Group { |
| 63 | + manifest = u.Manifest |
| 64 | + log.WithField("manifest", manifest).Debug("step replaced with unpacked value") |
| 65 | + break |
| 66 | + } |
| 67 | + } |
| 68 | + if manifest == step.Resource.Manifest { |
| 69 | + return "", fmt.Errorf("couldn't find unpacked step for %v", step) |
| 70 | + } |
| 71 | + return manifest, nil |
| 72 | +} |
| 73 | + |
| 74 | +func (r *manifestResolver) unpackedStepsForBundle(bundleName string, ref *UnpackedBundleReference) ([]v1alpha1.StepResource, error) { |
| 75 | + usteps, ok := r.unpackedSteps[bundleName] |
| 76 | + if ok { |
| 77 | + return usteps, nil |
| 78 | + } |
| 79 | + cm, err := r.configMapLister.ConfigMaps(ref.Namespace).Get(ref.Name) |
| 80 | + if err != nil { |
| 81 | + return nil, errorwrap.Wrapf(err, "error finding unpacked bundle configmap for ref %v", *ref) |
| 82 | + } |
| 83 | + loader := configmap.NewBundleLoader() |
| 84 | + bundle, err := loader.Load(cm) |
| 85 | + if err != nil { |
| 86 | + return nil, errorwrap.Wrapf(err, "error loading unpacked bundle configmap for ref %v", *ref) |
| 87 | + } |
| 88 | + steps, err := resolver.NewStepResourceFromBundle(bundle, r.namespace, ref.Replaces, ref.CatalogSourceName, ref.CatalogSourceNamespace) |
| 89 | + if err != nil { |
| 90 | + return nil, errorwrap.Wrapf(err, "error calculating steps for ref %v", *ref) |
| 91 | + } |
| 92 | + r.unpackedSteps[bundleName] = steps |
| 93 | + return steps, nil |
| 94 | +} |
| 95 | + |
| 96 | +func refForStep(step *v1alpha1.Step, log logrus.FieldLogger) *UnpackedBundleReference { |
| 97 | + log = log.WithFields(logrus.Fields{"resolving": step.Resolving, "step": step.Resource.Name}) |
| 98 | + var ref UnpackedBundleReference |
| 99 | + if err := json.Unmarshal([]byte(step.Resource.Manifest), &ref); err != nil { |
| 100 | + log.Debug("step is not a reference to an unpacked bundle (this is not an error if the step is a manifest)") |
| 101 | + return nil |
| 102 | + } |
| 103 | + log = log.WithField("ref", ref) |
| 104 | + if ref.Kind != "ConfigMap" || ref.Name == "" || ref.Namespace == "" || ref.CatalogSourceName == "" || ref.CatalogSourceNamespace == "" { |
| 105 | + log.Debug("step is not a reference to an unpacked bundle (this is not an error if the step is a manifest)") |
| 106 | + return nil |
| 107 | + } |
| 108 | + return &ref |
| 109 | +} |
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