[go] import command implemented #543
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,116 @@ | ||
| // Copyright 2020 Fairwinds | ||
| // | ||
| // 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 | ||
|
|
||
| package reckoner | ||
|
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||
| import ( | ||
| "bytes" | ||
| "fmt" | ||
| "strings" | ||
|
|
||
| "github.com/Masterminds/semver/v3" | ||
| "github.com/fairwindsops/reckoner/pkg/course" | ||
| "github.com/fairwindsops/reckoner/pkg/helm" | ||
| "gopkg.in/yaml.v3" | ||
| ) | ||
|
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| type ImportInfo struct { | ||
| Chart string | ||
| Version string | ||
| Name string | ||
| Namespace string | ||
| } | ||
|
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| type ImportValues map[string]interface{} | ||
|
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| func ImportOutput(release, namespace, repository string) (string, error) { | ||
| helmClient, err := helm.NewClient() | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| releaseInfo, err := gatherReleaseInfo(helmClient, namespace, release) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| if err := releaseInfo.parseChartVersion(); err != nil { | ||
| return "", err | ||
| } | ||
| userValues, err := gatherUserSuppliedValues(helmClient, namespace, release) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
|
|
||
| // set up and populate a release struct that will be used to output in yaml format | ||
| var releaseOut = new(course.Release) | ||
| releaseOut.Name = releaseInfo.Name | ||
| releaseOut.Namespace = releaseInfo.Namespace | ||
| releaseOut.Chart = releaseInfo.Chart | ||
| releaseOut.Version = releaseInfo.Version | ||
| releaseOut.Values = userValues | ||
| releaseOut.Repository = repository | ||
|
|
||
| // in order to set indent to 2 spaces we need to use a yaml encoder instead of yaml.Marshal | ||
| ret := bytes.NewBuffer([]byte{}) | ||
| encoder := yaml.NewEncoder(ret) | ||
| defer encoder.Close() | ||
| encoder.SetIndent(2) | ||
| if err := encoder.Encode(releaseOut); err != nil { | ||
| return "", err | ||
| } | ||
|
|
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| return ret.String(), err | ||
| } | ||
|
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| func gatherReleaseInfo(helmClient *helm.Client, namespace, release string) (*ImportInfo, error) { | ||
| var allReleases = new([]*ImportInfo) | ||
| releaseInfo, err := helmClient.ListNamespaceReleasesYAML(namespace) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| if err := yaml.Unmarshal(releaseInfo, allReleases); err != nil { | ||
| return nil, err | ||
| } | ||
| for _, r := range *allReleases { | ||
| if r.Name == release { | ||
| return r, nil | ||
| } | ||
| } | ||
| return nil, fmt.Errorf("could not find release %s in namespace %s", release, namespace) | ||
| } | ||
|
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| func gatherUserSuppliedValues(helmClient *helm.Client, namespace, release string) (ImportValues, error) { | ||
| var values = make(ImportValues) | ||
| userValues, err := helmClient.GetUserSuppliedValuesYAML(namespace, release) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| if err := yaml.Unmarshal(userValues, values); err != nil { | ||
| return nil, err | ||
| } | ||
| return values, nil | ||
| } | ||
|
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| func (i *ImportInfo) parseChartVersion() error { | ||
| splitChartVersion := strings.Split(i.Chart, "-") | ||
| if len(splitChartVersion) < 2 { | ||
| return fmt.Errorf("could not parse chart version from %s - expected at least one hyphen between chart name and version", i.Chart) | ||
| } | ||
| splitPoint := len(splitChartVersion) - 1 | ||
|
Comment on lines
+106
to
+109
There was a problem hiding this comment. They made this annoying to get, didn't they? |
||
| i.Chart = strings.Join(splitChartVersion[:splitPoint], "-") | ||
| i.Version = splitChartVersion[splitPoint] | ||
| if _, err := semver.NewVersion(i.Version); err != nil { | ||
| return fmt.Errorf("go %s as version string which is not valid semver", i.Version) | ||
| } | ||
| return nil | ||
| } | ||
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I thought this was fixed in Yaml v3 in the later versions?
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It still seems to default to 4 spaces in my testing and I didn't see a way to change it in the library without opting for the encoder route. I can go look again.