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Merge pull request #19 from stacklok/containerimage
Add container image support
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| Original file line number | Diff line number | Diff line change |
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| // Copyright 2023 Stacklok, Inc. | ||
| // | ||
| // 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 containerimage provides command-line utilities to work with container images. | ||
| package containerimage | ||
|
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| import ( | ||
| "github.com/spf13/cobra" | ||
| ) | ||
|
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| // CmdContainerImage represents the containerimage command | ||
| func CmdContainerImage() *cobra.Command { | ||
| cmd := &cobra.Command{ | ||
| Use: "containerimage", | ||
| Short: "Replace container image references with checksums", | ||
| SilenceUsage: true, | ||
| } | ||
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| cmd.AddCommand(CmdOne()) | ||
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| return cmd | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| // Copyright 2023 Stacklok, Inc. | ||
| // | ||
| // 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 containerimage | ||
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| import ( | ||
| "fmt" | ||
|
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| "github.com/google/go-containerregistry/pkg/name" | ||
| "github.com/spf13/cobra" | ||
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| "github.com/stacklok/frizbee/pkg/containers" | ||
| ) | ||
|
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| // CmdOne represents the one sub-command | ||
| func CmdOne() *cobra.Command { | ||
| cmd := &cobra.Command{ | ||
| Use: "one", | ||
| Short: "Replace the tag in container image reference", | ||
| Long: `This utility replaces a tag or branch reference in a container image reference | ||
| with the digest hash of the referenced tag. | ||
| Example: | ||
| $ frizbee containerimage one ghcr.io/stacklok/minder/helm/minder:0.20231123.829_ref.26ca90b | ||
| `, | ||
| Args: cobra.ExactArgs(1), | ||
| RunE: replaceOne, | ||
| SilenceUsage: true, | ||
| } | ||
|
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| return cmd | ||
| } | ||
|
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| func replaceOne(cmd *cobra.Command, args []string) error { | ||
| ctx := cmd.Context() | ||
| ref := args[0] | ||
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| r, err := name.ParseReference(ref) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to parse reference: %w", err) | ||
| } | ||
|
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| img := r.Context().String() | ||
|
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| sum, err := containers.GetDigest(ctx, ref) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to get checksum for action '%s': %w", ref, err) | ||
| } | ||
|
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| fmt.Fprintf(cmd.OutOrStdout(), "%s@%s\n", img, sum) | ||
| return nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,24 @@ | ||
| // | ||
| // Copyright 2023 Stacklok, Inc. | ||
| // | ||
| // 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 constants provides constants for the frizbee utilities. | ||
| package constants | ||
|
|
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| const ( | ||
| // UserAgent is the user agent string used by frizbee. | ||
| // | ||
| // TODO (jaosorior): Add version information to this. | ||
| UserAgent = "frizbee" | ||
| ) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| // | ||
| // Copyright 2023 Stacklok, Inc. | ||
| // | ||
| // 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 containers provides functions to replace tags for checksums | ||
| package containers | ||
|
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| import ( | ||
| "context" | ||
| "fmt" | ||
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| "github.com/google/go-containerregistry/pkg/name" | ||
| "github.com/google/go-containerregistry/pkg/v1/remote" | ||
|
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| "github.com/stacklok/frizbee/pkg/constants" | ||
| ) | ||
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| // GetDigest returns the digest of a container image reference. | ||
| func GetDigest(ctx context.Context, refstr string) (string, error) { | ||
| ref, err := name.ParseReference(refstr) | ||
| if err != nil { | ||
| return "", fmt.Errorf("failed to parse reference: %w", err) | ||
| } | ||
|
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| return GetDigestFromRef(ctx, ref) | ||
| } | ||
|
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| // GetDigestFromRef returns the digest of a container image reference | ||
| // from a name.Reference. | ||
| func GetDigestFromRef(ctx context.Context, ref name.Reference) (string, error) { | ||
| desc, err := remote.Get(ref, | ||
| remote.WithContext(ctx), | ||
| remote.WithUserAgent(constants.UserAgent)) | ||
| if err != nil { | ||
| return "", fmt.Errorf("failed to get remote reference: %w", err) | ||
| } | ||
|
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| return desc.Digest.String(), nil | ||
| } |
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