mirror of https://github.com/rancher/dartboard.git
61 lines
1.6 KiB
Go
61 lines
1.6 KiB
Go
/*
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Copyright © 2024 SUSE LLC
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package docker
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import (
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"encoding/json"
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"fmt"
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"log"
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"os/exec"
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"strings"
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)
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// Image is the mapping of docker images --format=json
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type Image struct {
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Repository string
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Tag string
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}
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// Images returns known docker images matching the image reference
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func Images(image string) ([]string, error) {
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args := []string{"images", "--filter=reference=" + image, "--format=json"}
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log.Printf("Exec: docker %s\n", strings.Join(args, " "))
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cmd := exec.Command("docker", args...)
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var outStream strings.Builder
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var errStream strings.Builder
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cmd.Stdout = &outStream
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cmd.Stderr = &errStream
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if err := cmd.Run(); err != nil {
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return nil, fmt.Errorf("%v", errStream.String())
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}
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lines := strings.Split(strings.TrimSpace(outStream.String()), "\n")
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var images []string
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for _, line := range lines {
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if line != "" {
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var img Image
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err := json.Unmarshal([]byte(line), &img)
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if err != nil {
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return nil, fmt.Errorf("error unmarshalling JSON output from docker images: %w", err)
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}
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images = append(images, img.Repository+":"+img.Tag)
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}
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}
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return images, nil
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}
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