feat: GA of Kustomize and K8s manifests support

docs/advanced-features.md

@@ -0,0 +1,91 @@
+## Advanced Features
+
+- [Import Configuration Parameters into Helmfile](#import-configuration-parameters-into-helmfile)
+
+### Import Configuration Parameters into Helmfile
+
+Helmfile integrates [vals]() to import configuration parameters from following backends:
+
+- AWS SSM Parameter Store
+- AWS SecretsManager
+- Vault
+- SOPS
+
+See [Vals "Suported Backends"](https://github.com/variantdev/vals#suported-backends) for the full list of available backends.
+
+This feature was implemented in https://github.com/roboll/helmfile/pull/906.
+If you're curious how it's designed and how it works, please consult the pull request.
+
+### Deploy Kustomizations with Helmfile
+
+You can deploy [kustomize](https://github.com/kubernetes-sigs/kustomize) "kustomization"s with Helmfile.
+
+Most of Kustomize operations that is usually done with `kustomize edit` can be done declaratively via Helm values.yaml files.
+
+Under the hood, Helmfile transforms the kustomization into a local chart in a temporary directory so that it can be `helm upgrade --install`ed.
+
+The transformation is done by generating (1)a temporary kustomization from various options and (2)temporary chart from the temporary kustomization.
+
+An example pseudo code for the transformation logic can be written as:
+
+```console
+$ TMPCHART=/tmp/sometmpdir
+$ mkdir -p ${TMPCHART}/templates
+$ somehow_generate_chart_yaml ${TMPCHART}/Chart.yaml
+
+$ TMPKUSTOMIZATION=/tmp/sometmpdir2
+$ somehow_generate_temp_kustomization_yaml ${TMPKUSTOMIZATION}/kustomization.yaml
+$ kustomize build ${TMPKUSTOMIZATION}/kustomization.yaml > ${TMPCHART}/templates/all.yaml 
+```
+
+Let's say you have a `helmfile.yaml` that looks like the below:
+
+```yaml
+releases:
+- name: myapp
+  chart: mykustomization
+  values:
+  - values.yaml
+```
+
+Helmfile firstly generates a temporary `kustomization.yaml` that looks like:
+
+```yaml
+bases:
+- $(ABS_PATH_TO_HELMFILE_YAML}/mykustomization
+```
+
+Followed by the below steps:
+
+- Running `kustomize edit set image $IMAGE` for every `$IMAGE` generated from your values.yaml 
+- Running `kustomize edit set nameprefix $NAMEPREFIX` with the nameprefix specified in your values.yaml
+- Running `kustomize edit set namesuffix $NAMESUFFIX` with the namesuffix specified in your values.yaml
+- Running `kustomize edit set namespace $NS` with the namespace specified in your values.yaml
+
+A `values.yaml` file for kustomization would look like the below:
+
+```yaml
+images:
+# kustomize edit set image mysql=eu.gcr.io/my-project/mysql@canary
+- name: mysql
+  newName: eu.gcr.io/my-project/mysql
+  newTag: canary
+# kustomize edit set image myapp=my-registry/my-app@sha256:24a0c4b4a4c0eb97a1aabb8e29f18e917d05abfe1b7a7c07857230879ce7d3d3
+- name: myapp
+  digest: sha256:24a0c4b4a4c0eb97a1aabb8e29f18e917d05abfe1b7a7c07857230879ce7d3d3
+  newName: my-registry/my-app
+
+# kustomize edit set nameprefix foo-
+namePrefix: foo-
+
+# kustomize edit set namesuffix -bar
+nameSuffix: -bar
+
+# kustomize edit set namespace myapp
+namespace: myapp
+```
+
+At this point, Helmfile can generate a complete kustomization from the base kustomization you specified in `releases[].chart` of your helmfile.yaml and `values.yaml`,
+which can be included in the temporary chart.
+
+After all, Helmfile just installs the temporary chart like standard charts, which allows you to manage everything with Helmfile regardless of each app is declared using a Helm chart or a kustomization.

go.mod

@@ -23,6 +23,7 @@ require (
 	github.com/r3labs/diff v0.0.0-20190801153147-a71de73c46ad
 	github.com/tatsushid/go-prettytable v0.0.0-20141013043238-ed2d14c29939
 	github.com/urfave/cli v1.20.0
+	github.com/variantdev/chartify v0.3.0
 	github.com/variantdev/dag v0.0.0-20191028002400-bb0b3c785363
 	github.com/variantdev/vals v0.4.1-0.20200501114609-9cebe482281c
 	go.mozilla.org/sops v0.0.0-20190912205235-14a22d7a7060 // indirect

go.sum

@@ -278,6 +278,7 @@ github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2
 github.com/go-ldap/ldap v3.0.2+incompatible h1:kD5HQcAzlQ7yrhfn+h+MSABeAy/jAJhvIJ/QDllP44g=
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 github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
+github.com/go-logr/logr v0.1.0/go.mod h1:ixOQHD9gLJUVQQ2ZOR7zLEifBX6tGkNJF4QyIY7sIas=
 github.com/go-martini/martini v0.0.0-20170121215854-22fa46961aab h1:xveKWz2iaueeTaUgdetzel+U7exyigDYBryyVfV/rZk=
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 github.com/go-sql-driver/mysql v1.4.1 h1:g24URVg0OFbNUTx9qqY1IRZ9D9z3iPyi5zKhQZpNwpA=
@@ -646,6 +647,12 @@ github.com/oracle/oci-go-sdk v7.0.0+incompatible h1:oj5ESjXwwkFRdhZSnPlShvLWYdt/
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+github.com/otiai10/copy v1.1.1 h1:PH7IFlRQ6Fv9vYmuXbDRLdgTHoP1w483kPNUP2bskpo=
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+github.com/otiai10/curr v1.0.0/go.mod h1:LskTG5wDwr8Rs+nNQ+1LlxRjAtTZZjtJW4rMXl6j4vs=
+github.com/otiai10/mint v1.3.0/go.mod h1:F5AjcsTsWUqX+Na9fpHb52P8pcRX2CI6A3ctIT91xUo=
+github.com/otiai10/mint v1.3.1/go.mod h1:/yxELlJQ0ufhjUwhshSj+wFjZ78CnZ48/1wtmBH1OTc=
 github.com/oxtoacart/bpool v0.0.0-20150712133111-4e1c5567d7c2 h1:CXwSGu/LYmbjEab5aMCs5usQRVBGThelUKBNnoSOuso=
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@@ -774,6 +781,20 @@ github.com/ulikunitz/xz v0.5.5 h1:pFrO0lVpTBXLpYw+pnLj6TbvHuyjXMfjGeCwSqCVwok=
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+github.com/variantdev/chartify v0.0.0-20200330123007-ddc79388188c h1:PiAOZUdKtf8tIfps1fLaEsP9BCTT8hR9FawTfAuLY5o=
+github.com/variantdev/chartify v0.0.0-20200330123007-ddc79388188c/go.mod h1:DzFQ1XeNBpbLdbze39ai3auS4b+Xo/KzRluEY/LyqlM=
+github.com/variantdev/chartify v0.1.0 h1:RHo/di1tXvydrJwwbHoWduvG3r9nU0oj7RvuxmQLCW0=
+github.com/variantdev/chartify v0.1.0/go.mod h1:DzFQ1XeNBpbLdbze39ai3auS4b+Xo/KzRluEY/LyqlM=
+github.com/variantdev/chartify v0.1.1 h1:4K+6XotrJ/U5BoQc29BTOWpNGnzsCBEDahApiOoPURc=
+github.com/variantdev/chartify v0.1.1/go.mod h1:DzFQ1XeNBpbLdbze39ai3auS4b+Xo/KzRluEY/LyqlM=
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+github.com/variantdev/chartify v0.1.2/go.mod h1:DzFQ1XeNBpbLdbze39ai3auS4b+Xo/KzRluEY/LyqlM=
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 github.com/variantdev/vals v0.4.0 h1:O1O7/sWhlvozcY2DjZBzlE1notxwVo6UBT1+w7HsO/k=
@@ -1105,6 +1126,10 @@ gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
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+gopkg.in/yaml.v3 v3.0.0-20190709130402-674ba3eaed22 h1:0efs3hwEZhFKsCoP8l6dDB1AZWMgnEl3yWXWRZTOaEA=
+gopkg.in/yaml.v3 v3.0.0-20190709130402-674ba3eaed22/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
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@@ -1128,6 +1153,8 @@ k8s.io/apimachinery v0.0.0-20190409092423-760d1845f48b h1:fVkKJL9FIpA8LSJyHVM00M
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