mirror of https://github.com/helm/helm.git
80 lines
2.5 KiB
Go
80 lines
2.5 KiB
Go
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/*
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Copyright The Helm Authors.
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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 rules
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import (
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"fmt"
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"os"
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"path/filepath"
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"helm.sh/helm/v4/internal/chart/v3/lint/support"
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"helm.sh/helm/v4/pkg/chart/common"
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"helm.sh/helm/v4/pkg/chart/common/util"
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)
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// ValuesWithOverrides tests the values.yaml file.
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//
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// If a schema is present in the chart, values are tested against that. Otherwise,
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// they are only tested for well-formedness.
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//
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// If additional values are supplied, they are coalesced into the values in values.yaml.
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func ValuesWithOverrides(linter *support.Linter, valueOverrides map[string]interface{}) {
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file := "values.yaml"
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vf := filepath.Join(linter.ChartDir, file)
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fileExists := linter.RunLinterRule(support.InfoSev, file, validateValuesFileExistence(vf))
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if !fileExists {
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return
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}
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linter.RunLinterRule(support.ErrorSev, file, validateValuesFile(vf, valueOverrides))
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}
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func validateValuesFileExistence(valuesPath string) error {
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_, err := os.Stat(valuesPath)
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if err != nil {
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return fmt.Errorf("file does not exist")
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}
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return nil
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}
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func validateValuesFile(valuesPath string, overrides map[string]interface{}) error {
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values, err := common.ReadValuesFile(valuesPath)
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if err != nil {
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return fmt.Errorf("unable to parse YAML: %w", err)
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}
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// Helm 3.0.0 carried over the values linting from Helm 2.x, which only tests the top
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// level values against the top-level expectations. Subchart values are not linted.
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// We could change that. For now, though, we retain that strategy, and thus can
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// coalesce tables (like reuse-values does) instead of doing the full chart
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// CoalesceValues
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coalescedValues := util.CoalesceTables(make(map[string]interface{}, len(overrides)), overrides)
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coalescedValues = util.CoalesceTables(coalescedValues, values)
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ext := filepath.Ext(valuesPath)
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schemaPath := valuesPath[:len(valuesPath)-len(ext)] + ".schema.json"
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schema, err := os.ReadFile(schemaPath)
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if len(schema) == 0 {
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return nil
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}
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if err != nil {
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return err
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}
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return util.ValidateAgainstSingleSchema(coalescedValues, schema)
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}
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