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Sketch a rough shape for ko-build#356
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,47 @@ | ||
| /* | ||
| Copyright 2023 Google LLC All Rights Reserved. | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
|
|
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| package policy | ||
|
|
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| type Verification struct { | ||
| // NoMatchPolicy specifies the behavior when a base image doesn't match any | ||
| // of the listed policies. It allows the values: allow, deny, and warn. | ||
| // Currently the default is "warn". | ||
| NoMatchPolicy string `yaml:"no-match-policy,omitempty"` | ||
|
|
||
| // Policies specifies a collection of policies to use to cover the base | ||
| // images used as part of evaluation. See "policy" below for usage. | ||
| // | ||
| // TODO(mattmoor): Sort out how we distinguish between an explicit empty | ||
| // list and when this field is unspecified. Perhaps we need *[]policy? | ||
| // Once that's sorted, document the current default here. | ||
| Policies []PolicyData `yaml:"policies,omitempty"` | ||
| } | ||
|
|
||
| // PolicyData contains a set of options for specifying a PolicyData. Exactly | ||
| // one of the fields may be specified for each PolicyData entry. | ||
| type PolicyData struct { | ||
| // Data is a collection of one or more ClusterImagePolicy resources. | ||
| Data string `yaml:"data,omitempty"` | ||
|
|
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| // URL links to a file containing one or more ClusterImagePolicy resources. | ||
| URL string `yaml:"url,omitempty"` | ||
|
|
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| // Path is a path to a file or directory containing ClusterImagePolicy resources. | ||
| // TODO(mattmoor): How do we want to handle something like -R? Perhaps we | ||
| // don't and encourage folks to list each directory individually? | ||
| Path string `yaml:"path,omitempty"` | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,56 @@ | ||
| /* | ||
| Copyright 2023 Google LLC All Rights Reserved. | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
|
|
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| package policy | ||
|
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| import ( | ||
| "fmt" | ||
|
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| "github.com/google/go-containerregistry/pkg/name" | ||
| "knative.dev/pkg/apis" | ||
| ) | ||
|
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| // Verifier is the interface for checking that a given image digest satisfies | ||
| // the policies backing this interface. | ||
| type Verifier interface { | ||
| // Verify checks that the provided digest satisfies the backing policies. | ||
| Verify(name.Digest) error | ||
| } | ||
|
|
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| // Compile turns a Verification into an executable Verifier. | ||
| // Any compilation errors are returned here. | ||
| func Compile(v Verification) (Verifier, error) { | ||
| return &impl{ | ||
| verification: v, | ||
| }, nil | ||
| } | ||
|
|
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| type impl struct { | ||
| verification Verification | ||
| } | ||
|
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| // Check that impl implements Verifier | ||
| var _ Verifier = (*impl)(nil) | ||
|
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| // Verify implements Verifier | ||
| func (i *impl) Verify(d name.Digest) error { | ||
| err := &apis.FieldError{ | ||
| Message: "NYI", | ||
| Details: fmt.Sprintf("got policies: %v", i.verification), | ||
| } | ||
|
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| return err // .At(apis.WarningLevel) | ||
| } |
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