poc: direct bundle install API + implementation

Signed-off-by: Joe Lanford <[email protected]>

Author: joelanford

Diff for: api/v1alpha1/clusterextension_types.go

@@ -73,29 +73,44 @@ type ClusterExtensionSpec struct {
 	Install ClusterExtensionInstallConfig `json:"install"`
 }
 
-const SourceTypeCatalog = "Catalog"
+const (
+	SourceTypeCatalog = "Catalog"
+	SourceTypeBundle  = "Bundle"
+)
 
 // SourceConfig is a discriminated union which selects the installation source.
 // +union
-// +kubebuilder:validation:XValidation:rule="self.sourceType == 'Catalog' && has(self.catalog)",message="sourceType Catalog requires catalog field"
+
+// +kubebuilder:validation:XValidation:rule="has(self.sourceType) && self.sourceType == 'Bundle' ?has(self.bundle) : !has(self.bundle)",message="bundle is required when sourceType is Bundle, and forbidden otherwise"
+// +kubebuilder:validation:XValidation:rule="has(self.sourceType) && self.sourceType == 'Catalog' ?has(self.catalog) : !has(self.catalog)",message="catalog is required when sourceType is Catalog, and forbidden otherwise"
 type SourceConfig struct {
 	// sourceType is a required reference to the type of install source.
 	//
-	// Allowed values are ["Catalog"]
+	// Allowed values are ["Catalog", "Bundle"]
 	//
 	// When this field is set to "Catalog", information for determining the appropriate
 	// bundle of content to install will be fetched from ClusterCatalog resources existing
 	// on the cluster. When using the Catalog sourceType, the catalog field must also be set.
 	//
-	// +unionDiscriminator
-	// +kubebuilder:validation:Enum:="Catalog"
+	// When this field is set to "Bundle", the bundle of content to install is specified
+	// directly. In this case, no interaction with ClusterCatalog resources is necessary.
+	// When using the Bundle sourceType, the bundle field must also be set.
+	//
+	// +unionDiscriminatorq
+	// +kubebuilder:validation:Enum:=Bundle;Catalog
 	SourceType string `json:"sourceType"`
 
 	// catalog is used to configure how information is sourced from a catalog. This field must be defined when sourceType is set to "Catalog",
 	// and must be the only field defined for this sourceType.
 	//
 	// +optional.
 	Catalog *CatalogSource `json:"catalog,omitempty"`
+
+	// bundle is used to configure how information is sourced from a bundle. This field must be defined when sourceType is set to "Bundle",
+	// and must be the only field defined for this sourceType.
+	//
+	// +optional.
+	Bundle *BundleSource `json:"bundle,omitempty"`
 }
 
 // ClusterExtensionInstallConfig is a union which selects the clusterExtension installation config.
@@ -364,6 +379,14 @@ type CatalogSource struct {
 	UpgradeConstraintPolicy UpgradeConstraintPolicy `json:"upgradeConstraintPolicy,omitempty"`
 }
 
+type BundleSource struct {
+	// ref is an OCI reference to an extension bundle image. Images referenced
+	// must conform to the registry+v1 bundle format.
+
+	//+kubebuilder:validation:Required
+	Ref string `json:"ref"`
+}
+
 // ServiceAccountReference references a serviceAccount.
 type ServiceAccountReference struct {
 	// name is a required, immutable reference to the name of the ServiceAccount

Diff for: api/v1alpha1/zz_generated.deepcopy.go

@@ -258,7 +258,11 @@ func main() {
 		return httputil.BuildHTTPClient(certPoolWatcher)
 	})
 
-	resolver := &resolve.CatalogResolver{
+	bundleResolver := &resolve.BundleResolver{
+		Unpacker:                unpacker,
+		BrittleUnpackerCacheDir: unpacker.BaseCachePath,
+	}
+	catalogResolver := &resolve.CatalogResolver{
 		WalkCatalogsFunc: resolve.CatalogWalker(
 			func(ctx context.Context, option ...client.ListOption) ([]catalogd.ClusterCatalog, error) {
 				var catalogs catalogd.ClusterCatalogList
@@ -273,6 +277,9 @@ func main() {
 			resolve.NoDependencyValidation,
 		},
 	}
+	resolver := resolve.MultiResolver{}
+	resolver.RegisterType(ocv1alpha1.SourceTypeBundle, bundleResolver)
+	resolver.RegisterType(ocv1alpha1.SourceTypeCatalog, catalogResolver)
 
 	aeClient, err := apiextensionsv1client.NewForConfig(mgr.GetConfig())
 	if err != nil {

Diff for: cmd/manager/main.go

@@ -216,6 +216,16 @@ spec:
                     catalog:
                       packageName: example-package
                 properties:
+                  bundle:
+                    description: |-
+                      bundle is used to configure how information is sourced from a bundle. This field must be defined when sourceType is set to "Bundle",
+                      and must be the only field defined for this sourceType.
+                    properties:
+                      ref:
+                        type: string
+                    required:
+                    - ref
+                    type: object
                   catalog:
                     description: |-
                       catalog is used to configure how information is sourced from a catalog. This field must be defined when sourceType is set to "Catalog",
@@ -460,20 +470,31 @@ spec:
                     description: |-
                       sourceType is a required reference to the type of install source.
 
-                      Allowed values are ["Catalog"]
+                      Allowed values are ["Catalog", "Bundle"]
 
                       When this field is set to "Catalog", information for determining the appropriate
                       bundle of content to install will be fetched from ClusterCatalog resources existing
                       on the cluster. When using the Catalog sourceType, the catalog field must also be set.
+
+                      When this field is set to "Bundle", the bundle of content to install is specified
+                      directly. In this case, no interaction with ClusterCatalog resources is necessary.
+                      When using the Bundle sourceType, the bundle field must also be set.
                     enum:
+                    - Bundle
                     - Catalog
                     type: string
                 required:
                 - sourceType
                 type: object
                 x-kubernetes-validations:
-                - message: sourceType Catalog requires catalog field
-                  rule: self.sourceType == 'Catalog' && has(self.catalog)
+                - message: bundle is required when sourceType is Bundle, and forbidden
+                    otherwise
+                  rule: 'has(self.sourceType) && self.sourceType == ''Bundle'' ?has(self.bundle)
+                    : !has(self.bundle)'
+                - message: catalog is required when sourceType is Catalog, and forbidden
+                    otherwise
+                  rule: 'has(self.sourceType) && self.sourceType == ''Catalog'' ?has(self.catalog)
+                    : !has(self.catalog)'
             required:
             - install
             - source

Diff for: config/base/crd/bases/olm.operatorframework.io_clusterextensions.yaml

@@ -29,10 +29,9 @@ metadata:
   name: cloudnative-pg
 spec:
   source:
-    sourceType: Catalog
-    catalog:
-      packageName: cloudnative-pg
-      version: "1.24.1"
+    sourceType: Bundle
+    bundle:
+      ref: quay.io/operatorhubio/cloudnative-pg@sha256:e960f799f3d2b2dd5ecc74bc576476fe9c70de6486ba5ffc7d6ef333bba186bc
   install:
     namespace: cloudnative-pg
     serviceAccount:

Diff for: config/samples/cloudnative-pg-clusterextension.yaml

@@ -273,11 +273,12 @@ metadata:
   name: argocd
 spec:
   source:
-    sourceType: Catalog
-    catalog:
-      packageName: argocd-operator
-      version: 0.6.0
+    sourceType: Bundle
+    bundle:
+      ref: quay.io/operatorhubio/argocd-operator@sha256:d538c45a813b38ef0e44f40d279dc2653f97ca901fb660da5d7fe499d51ad3b3
   install:
     namespace: argocd
     serviceAccount:
       name: argocd-installer
+    values:
+      watchNamespace: argocd

Diff for: config/samples/olm_v1alpha1_clusterextension.yaml

@@ -31,6 +31,22 @@ _Appears in:_
 | `version` _string_ | version is a required field and is a reference<br />to the version that this bundle represents |  |  |
 
 
+#### BundleSource
+
+
+
+
+
+
+
+_Appears in:_
+- [SourceConfig](#sourceconfig)
+
+| Field | Description | Default | Validation |
+| --- | --- | --- | --- |
+| `ref` _string_ |  |  | Required: \{\} <br /> |
+
+
 #### CRDUpgradeSafetyPolicy
 
 _Underlying type:_ _string_
@@ -232,7 +248,7 @@ _Appears in:_
 
 
 
-SourceConfig is a discriminated union which selects the installation source.
+
 
 
 
@@ -241,8 +257,9 @@ _Appears in:_
 
 | Field | Description | Default | Validation |
 | --- | --- | --- | --- |
-| `sourceType` _string_ | sourceType is a required reference to the type of install source.<br /><br />Allowed values are ["Catalog"]<br /><br />When this field is set to "Catalog", information for determining the appropriate<br />bundle of content to install will be fetched from ClusterCatalog resources existing<br />on the cluster. When using the Catalog sourceType, the catalog field must also be set. |  | Enum: [Catalog] <br /> |
+| `sourceType` _string_ | sourceType is a required reference to the type of install source.<br /><br />Allowed values are ["Catalog", "Bundle"]<br /><br />When this field is set to "Catalog", information for determining the appropriate<br />bundle of content to install will be fetched from ClusterCatalog resources existing<br />on the cluster. When using the Catalog sourceType, the catalog field must also be set.<br /><br />When this field is set to "Bundle", the bundle of content to install is specified<br />directly. In this case, no interaction with ClusterCatalog resources is necessary.<br />When using the Bundle sourceType, the bundle field must also be set. |  | Enum: [Bundle Catalog] <br /> |
 | `catalog` _[CatalogSource](#catalogsource)_ | catalog is used to configure how information is sourced from a catalog. This field must be defined when sourceType is set to "Catalog",<br />and must be the only field defined for this sourceType. |  |  |
+| `bundle` _[BundleSource](#bundlesource)_ | bundle is used to configure how information is sourced from a bundle. This field must be defined when sourceType is set to "Bundle",<br />and must be the only field defined for this sourceType. |  |  |
 
 
 #### UpgradeConstraintPolicy

Diff for: docs/api-reference/operator-controller-api-reference.md

@@ -113,6 +113,7 @@ require (
 	github.com/go-task/slim-sprig/v3 v3.0.0 // indirect
 	github.com/gobwas/glob v0.2.3 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/golang-migrate/migrate/v4 v4.18.1 // indirect
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
 	github.com/golang/protobuf v1.5.4 // indirect
 	github.com/google/btree v1.1.2 // indirect

Diff for: go.mod

@@ -751,6 +751,8 @@ go.opentelemetry.io/proto/otlp v1.3.1/go.mod h1:0X1WI4de4ZsLrrJNLAQbFeLCm3T7yBkR
 go.starlark.net v0.0.0-20230612165344-9532f5667272 h1:2/wtqS591wZyD2OsClsVBKRPEvBsQt/Js+fsCiYhwu8=
 go.starlark.net v0.0.0-20230612165344-9532f5667272/go.mod h1:jxU+3+j+71eXOW14274+SmmuW82qJzl6iZSeqEtTGds=
 go.uber.org/atomic v1.4.0/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
+go.uber.org/atomic v1.10.0 h1:9qC72Qh0+3MqyJbAn8YU5xVq1frD8bn3JtD2oXtafVQ=
+go.uber.org/atomic v1.10.0/go.mod h1:LUxbIzbOniOlMKjJjyPfpl4v+PKK2cNJn91OQbhoJI0=
 go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
 go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE=
 go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0=

Diff for: go.sum

@@ -0,0 +1,72 @@
+package resolve
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"path/filepath"
+
+	bsemver "github.com/blang/semver/v4"
+	"github.com/containers/image/v5/docker/reference"
+
+	"github.com/operator-framework/operator-registry/alpha/action"
+	"github.com/operator-framework/operator-registry/alpha/declcfg"
+
+	ocv1alpha1 "github.com/operator-framework/operator-controller/api/v1alpha1"
+	"github.com/operator-framework/operator-controller/internal/bundleutil"
+	"github.com/operator-framework/operator-controller/internal/rukpak/source"
+)
+
+type BundleResolver struct {
+	Unpacker                source.Unpacker
+	BrittleUnpackerCacheDir string
+}
+
+func (r *BundleResolver) Resolve(ctx context.Context, ext *ocv1alpha1.ClusterExtension, _ *ocv1alpha1.BundleMetadata) (*declcfg.Bundle, *bsemver.Version, *declcfg.Deprecation, error) {
+	res, err := r.Unpacker.Unpack(ctx, &source.BundleSource{
+		Name: ext.Name,
+		Type: source.SourceTypeImage,
+		Image: &source.ImageSource{
+			Ref: ext.Spec.Source.Bundle.Ref,
+		},
+	})
+	if err != nil {
+		return nil, nil, nil, err
+	}
+	if res.State != source.StateUnpacked {
+		return nil, nil, nil, fmt.Errorf("bundle not unpacked: %v", res.Message)
+	}
+
+	ref, err := reference.ParseNamed(res.ResolvedSource.Image.Ref)
+	if err != nil {
+		return nil, nil, nil, err
+	}
+	canonicalRef, ok := ref.(reference.Canonical)
+	if !ok {
+		return nil, nil, nil, errors.New("expected canonical reference")
+	}
+	bundlePath := filepath.Join(r.BrittleUnpackerCacheDir, ext.Name, canonicalRef.Digest().String())
+
+	// TODO: This is a temporary workaround to get the bundle from the filesystem
+	//    until the operator-registry library is updated to support reading from a
+	//    filesystem. This will be removed once the library is updated.
+
+	render := action.Render{
+		Refs:           []string{bundlePath},
+		AllowedRefMask: action.RefBundleDir,
+	}
+	fbc, err := render.Run(ctx)
+	if err != nil {
+		return nil, nil, nil, err
+	}
+	if len(fbc.Bundles) != 1 {
+		return nil, nil, nil, errors.New("expected exactly one bundle")
+	}
+	bundle := fbc.Bundles[0]
+	bundle.Image = canonicalRef.String()
+	v, err := bundleutil.GetVersion(bundle)
+	if err != nil {
+		return nil, nil, nil, err
+	}
+	return &bundle, v, nil, nil
+}

Diff for: internal/resolve/bundle.go

@@ -2,6 +2,7 @@ package resolve
 
 import (
 	"context"
+	"fmt"
 
 	bsemver "github.com/blang/semver/v4"
 
@@ -19,3 +20,18 @@ type Func func(ctx context.Context, ext *ocv1alpha1.ClusterExtension, installedB
 func (f Func) Resolve(ctx context.Context, ext *ocv1alpha1.ClusterExtension, installedBundle *ocv1alpha1.BundleMetadata) (*declcfg.Bundle, *bsemver.Version, *declcfg.Deprecation, error) {
 	return f(ctx, ext, installedBundle)
 }
+
+type MultiResolver map[string]Resolver
+
+func (m MultiResolver) RegisterType(sourceType string, r Resolver) {
+	m[sourceType] = r
+}
+
+func (m MultiResolver) Resolve(ctx context.Context, ext *ocv1alpha1.ClusterExtension, installedBundle *ocv1alpha1.BundleMetadata) (*declcfg.Bundle, *bsemver.Version, *declcfg.Deprecation, error) {
+	t := ext.Spec.Source.SourceType
+	r, ok := m[t]
+	if !ok {
+		return nil, nil, nil, fmt.Errorf("no resolver for source type %q", t)
+	}
+	return r.Resolve(ctx, ext, installedBundle)
+}