add interface functions to list & get releases

.github/workflows/build.yml

@@ -19,7 +19,7 @@ jobs:
           set -x
           apt-get -y update && apt-get -y install git
           cd /
-          go get -u github.com/golang/mock/mockgen@v1.4.4
+          go get -u github.com/golang/mock/mockgen@v1.5.0
           cd -
           go env
           go generate ./...

client.go

@@ -16,6 +16,7 @@ import (
 	"helm.sh/helm/v3/pkg/cli"
 	"helm.sh/helm/v3/pkg/downloader"
 	"helm.sh/helm/v3/pkg/getter"
+	"helm.sh/helm/v3/pkg/release"
 	"helm.sh/helm/v3/pkg/repo"
 	"helm.sh/helm/v3/pkg/storage/driver"
 	apiextensionsV1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
@@ -211,6 +212,22 @@ func (c *HelmClient) InstallOrUpgradeChart(ctx context.Context, spec *ChartSpec)
 	return c.install(spec)
 }
 
+// ListDeployedReleases lists all deployed releases.
+// Namespace and other context is provided via the Options struct when instantiating a client.
+func (c *HelmClient) ListDeployedReleases() ([]*release.Release, error) {
+	return c.listDeployedReleases()
+}
+
+// GetReleaseValues returns the (optionally, all computed) values for the specified release.
+func (c *HelmClient) GetReleaseValues(name string, allValues bool) (map[string]interface{}, error) {
+	return c.getReleaseValues(name, allValues)
+}
+
+// GetRelease returns a release specified by name.
+func (c *HelmClient) GetRelease(name string) (*release.Release, error) {
+	return c.getRelease(name)
+}
+
 // DeleteChartFromCache deletes the provided chart from the client's cache
 func (c *HelmClient) DeleteChartFromCache(spec *ChartSpec) error {
 	return c.deleteChartFromCache(spec)
@@ -577,6 +594,28 @@ func (c *HelmClient) chartIsInstalled(release string) (bool, error) {
 	return true, nil
 }
 
+func (c *HelmClient) listDeployedReleases() ([]*release.Release, error) {
+	listClient := action.NewList(c.ActionConfig)
+
+	listClient.StateMask = action.ListDeployed
+
+	return listClient.Run()
+}
+
+func (c *HelmClient) getReleaseValues(name string, allValues bool) (map[string]interface{}, error) {
+	getReleaseValuesClient := action.NewGetValues(c.ActionConfig)
+
+	getReleaseValuesClient.AllValues = allValues
+
+	return getReleaseValuesClient.Run(name)
+}
+
+func (c *HelmClient) getRelease(name string) (*release.Release, error) {
+	getReleaseClient := action.NewGet(c.ActionConfig)
+
+	return getReleaseClient.Run(name)
+}
+
 // mergeInstallOptions merges values of the provided chart to helm install options used by the client
 func mergeInstallOptions(chartSpec *ChartSpec, installOptions *action.Install) {
 	installOptions.DisableHooks = chartSpec.DisableHooks

client_test.go

@@ -137,3 +137,21 @@ func ExampleHelmClient_UninstallRelease() {
 		panic(err)
 	}
 }
+
+func ExampleHelmClient_ListDeployedReleases() {
+	if _, err := helmClient.ListDeployedReleases(); err != nil {
+		panic(err)
+	}
+}
+
+func ExampleHelmClient_GetReleaseValues() {
+	if _, err := helmClient.GetReleaseValues("etcd-operator", true); err != nil {
+		panic(err)
+	}
+}
+
+func ExampleHelmClient_GetRelease() {
+	if _, err := helmClient.GetRelease("etcd-operator"); err != nil {
+		panic(err)
+	}
+}

go.sum

@@ -786,8 +786,6 @@ golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e h1:vcxGaoTs7kV8m5Np9uUNQin4BrLOthgV7252N8V+FwY=
 golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9 h1:SQFwaSi55rU7vdNs9Yr0Z324VNlrF+0wMqRXT4St8ck=
-golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20180823144017-11551d06cbcc/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -830,8 +828,6 @@ golang.org/x/sys v0.0.0-20200615200032-f1bc736245b1/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201112073958-5cba982894dd h1:5CtCZbICpIOFdgO940moixOPjc0178IU44m4EjOO5IY=
 golang.org/x/sys v0.0.0-20201112073958-5cba982894dd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c h1:VwygUrnw9jn88c4u8GD3rZQbqrP/tgas88tPUbBxQrk=
-golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=

interface.go

@@ -3,6 +3,7 @@ package helmclient
 import (
 	"context"
 
+	"helm.sh/helm/v3/pkg/release"
 	"helm.sh/helm/v3/pkg/repo"
 )
 
@@ -12,6 +13,9 @@ type Client interface {
 	AddOrUpdateChartRepo(entry repo.Entry) error
 	UpdateChartRepos() error
 	InstallOrUpgradeChart(ctx context.Context, spec *ChartSpec) error
+	ListDeployedReleases() ([]*release.Release, error)
+	GetRelease(name string) (*release.Release, error)
+	GetReleaseValues(name string, allValues bool) (map[string]interface{}, error)
 	DeleteChartFromCache(spec *ChartSpec) error
 	UninstallRelease(spec *ChartSpec) error
 	TemplateChart(spec *ChartSpec) ([]byte, error)