mirror of https://github.com/helm/helm
Mike Lundy
6 years ago
parent
67de9f2be4
commit
4139a00e17
@ -0,0 +1,43 @@
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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 manifest
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import (
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"regexp"
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"strings"
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"k8s.io/helm/pkg/releaseutil"
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)
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// SplitManifests takes a map of rendered templates and splits them into the
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// detected manifests.
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func SplitManifests(templates map[string]string) []Manifest {
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var listManifests []Manifest
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// extract kind and name
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re := regexp.MustCompile("kind:(.*)\n")
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for k, v := range templates {
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match := re.FindStringSubmatch(v)
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h := "Unknown"
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if len(match) == 2 {
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h = strings.TrimSpace(match[1])
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}
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m := Manifest{Name: k, Content: v, Head: &releaseutil.SimpleHead{Kind: h}}
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listManifests = append(listManifests, m)
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}
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return listManifests
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}
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@ -0,0 +1,50 @@
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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 renderutil
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import (
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"fmt"
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"strings"
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"k8s.io/helm/pkg/chartutil"
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"k8s.io/helm/pkg/proto/hapi/chart"
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)
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// CheckDependencies will do a simple dependency check on the chart for local
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// rendering
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func CheckDependencies(ch *chart.Chart, reqs *chartutil.Requirements) error {
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missing := []string{}
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deps := ch.GetDependencies()
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for _, r := range reqs.Dependencies {
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found := false
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for _, d := range deps {
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if d.Metadata.Name == r.Name {
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found = true
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break
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}
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}
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if !found {
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missing = append(missing, r.Name)
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}
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}
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if len(missing) > 0 {
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return fmt.Errorf("found in requirements.yaml, but missing in charts/ directory: %s", strings.Join(missing, ", "))
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}
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return nil
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}
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@ -0,0 +1,24 @@
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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 renderutil contains tools related to the local rendering of charts.
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Local rendering means rendering without the tiller; this is generally used for
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local debugging and testing (see the `helm template` command for examples of
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use). This package will not render charts exactly the same way as the tiller
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will, but will be generally close enough for local debug purposes.
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*/
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package renderutil // import "k8s.io/helm/pkg/renderutil"
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@ -0,0 +1,88 @@
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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 renderutil
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import (
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"fmt"
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"github.com/Masterminds/semver"
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"k8s.io/helm/pkg/chartutil"
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"k8s.io/helm/pkg/engine"
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"k8s.io/helm/pkg/proto/hapi/chart"
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tversion "k8s.io/helm/pkg/version"
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)
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// Options are options for this simple local render
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type Options struct {
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ReleaseOptions chartutil.ReleaseOptions
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KubeVersion string
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}
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// Render chart templates locally and display the output.
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// This does not require the Tiller. Any values that would normally be
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// looked up or retrieved in-cluster will be faked locally. Additionally, none
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// of the server-side testing of chart validity (e.g. whether an API is supported)
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// is done.
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//
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// Note: a `nil` config passed here means "ignore the chart's default values";
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// if you want the normal behavior of merging the defaults with the new config,
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// you should pass `&chart.Config{Raw: "{}"},
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func Render(c *chart.Chart, config *chart.Config, opts Options) (map[string]string, error) {
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if req, err := chartutil.LoadRequirements(c); err == nil {
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if err := CheckDependencies(c, req); err != nil {
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return nil, err
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}
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} else if err != chartutil.ErrRequirementsNotFound {
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return nil, fmt.Errorf("cannot load requirements: %v", err)
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}
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err := chartutil.ProcessRequirementsEnabled(c, config)
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if err != nil {
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return nil, err
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}
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err = chartutil.ProcessRequirementsImportValues(c)
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if err != nil {
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return nil, err
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}
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// Set up engine.
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renderer := engine.New()
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caps := &chartutil.Capabilities{
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APIVersions: chartutil.DefaultVersionSet,
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KubeVersion: chartutil.DefaultKubeVersion,
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TillerVersion: tversion.GetVersionProto(),
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}
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if opts.KubeVersion != "" {
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kv, verErr := semver.NewVersion(opts.KubeVersion)
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if verErr != nil {
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return nil, fmt.Errorf("could not parse a kubernetes version: %v", verErr)
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}
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caps.KubeVersion.Major = fmt.Sprint(kv.Major())
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caps.KubeVersion.Minor = fmt.Sprint(kv.Minor())
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caps.KubeVersion.GitVersion = fmt.Sprintf("v%d.%d.0", kv.Major(), kv.Minor())
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}
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vals, err := chartutil.ToRenderValuesCaps(c, config, opts.ReleaseOptions, caps)
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if err != nil {
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return nil, err
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}
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return renderer.Render(c, vals)
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}
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@ -0,0 +1,153 @@
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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 renderutil
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import (
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"testing"
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"github.com/stretchr/testify/require"
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"k8s.io/helm/pkg/chartutil"
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"k8s.io/helm/pkg/proto/hapi/chart"
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)
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const cmTemplate = `kind: ConfigMap
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apiVersion: v1
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metadata:
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name: example
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data:
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Chart:
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{{.Chart | toYaml | indent 4}}
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Release:
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{{.Release | toYaml | indent 4}}
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Values:
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{{.Values | toYaml | indent 4}}
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`
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func TestRender(t *testing.T) {
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testChart := &chart.Chart{
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Metadata: &chart.Metadata{Name: "hello"},
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Templates: []*chart.Template{
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{Name: "templates/cm.yaml", Data: []byte(cmTemplate)},
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},
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Values: &chart.Config{Raw: "meow: defaultmeow"},
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}
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newConfig := &chart.Config{Raw: "meow: newmeow"}
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defaultConfig := &chart.Config{Raw: "{}"}
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tests := map[string]struct {
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chart *chart.Chart
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config *chart.Config
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opts Options
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want map[string]string
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}{
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"BasicWithValues": {
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chart: testChart,
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config: newConfig,
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opts: Options{},
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want: map[string]string{
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"hello/templates/cm.yaml": `kind: ConfigMap
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apiVersion: v1
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metadata:
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name: example
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data:
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Chart:
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name: hello
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Release:
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IsInstall: false
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IsUpgrade: false
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Name: ""
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Namespace: ""
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Revision: 0
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Service: Tiller
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Time: null
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Values:
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meow: newmeow
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`,
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},
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},
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"BasicNoValues": {
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chart: testChart,
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config: defaultConfig,
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opts: Options{},
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want: map[string]string{
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"hello/templates/cm.yaml": `kind: ConfigMap
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apiVersion: v1
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metadata:
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name: example
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data:
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Chart:
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name: hello
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Release:
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IsInstall: false
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IsUpgrade: false
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Name: ""
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Namespace: ""
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Revision: 0
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Service: Tiller
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Time: null
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Values:
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meow: defaultmeow
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`,
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},
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},
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"SetSomeReleaseValues": {
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chart: testChart,
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config: defaultConfig,
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opts: Options{ReleaseOptions: chartutil.ReleaseOptions{Name: "meow"}},
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want: map[string]string{
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"hello/templates/cm.yaml": `kind: ConfigMap
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apiVersion: v1
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metadata:
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name: example
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data:
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Chart:
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name: hello
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Release:
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IsInstall: false
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IsUpgrade: false
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Name: meow
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Namespace: ""
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Revision: 0
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Service: Tiller
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Time: null
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Values:
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meow: defaultmeow
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`,
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},
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},
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}
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for testName, tt := range tests {
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t.Run(testName, func(t *testing.T) {
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got, err := Render(tt.chart, tt.config, tt.opts)
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require.NoError(t, err)
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require.Equal(t, tt.want, got)
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})
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}
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}
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