Generate Helm chart as a release artifact

This helps with several things: it's no longer necessary to download an
archive of the entire repo, and it's impossible to have a mismatch
between the version of the chart being used, the release version, and
the links the documentation.

.github/workflows/release.yaml

@@ -33,6 +33,9 @@ jobs:
       -
         name: Generate Plugin manifest
         run: ./hack/release/generate-plugin-manifest.sh ${{steps.tag.outputs.tag}}
+      -
+        name: Generate Chart tarball
+        run: ./hack/release/generate-chart-tarball.sh ${{steps.tag.outputs.tag}}
       - 
         name: OLM RedHat bundle
         run: ./hack/generate-olm-bundle.sh ${{steps.tag.outputs.tag}}
@@ -43,6 +46,7 @@ jobs:
           files: |
             dist/datadog-plugin.yaml
             dist/*.zip
+            dist/*.tar.gz
         env:
           COMMIT_TAG: ${{steps.tag.outputs.tag}}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

chart/datadog-agent-with-operator/Chart.yaml

@@ -2,5 +2,5 @@ apiVersion: v2
 name: datadog-agent-with-operator
 description: A Helm chart for Kubernetes
 type: application
-version: 0.0.1
-appVersion: 0.1.3
+version: PLACEHOLDER_VERSION
+appVersion: PLACEHOLDER_VERSION

chart/datadog-operator/Chart.yaml

@@ -1,5 +1,5 @@
 apiVersion: v2
-appVersion: "0.1.3"
+appVersion: "PLACEHOLDER_VERSION"
 description: Datadog Operator
 name: datadog-operator
-version: 0.2.1
+version: "PLACEHOLDER_VERSION"

chart/datadog-operator/values.yaml

@@ -4,7 +4,7 @@
 replicaCount: 1
 image:
   repository: datadog/operator
-  tag: 0.2.1
+  tag: "PLACEHOLDER_VERSION"
   pullPolicy: IfNotPresent
 imagePullSecrets: []
 nameOverride: ""

docs/getting_started.md

@@ -16,11 +16,10 @@ Using the Datadog Operator requires the following prerequisites:
 In order to deploy a Datadog agent with the operator in the minimum number of steps, the [`datadog-agent-with-operator`](https://github.com/DataDog/datadog-operator/tree/master/chart/datadog-agent-with-operator) helm chart can be used.
 Here are the steps:
 
-1. Download the [Datadog Operator project zip ball][3] and unzip it. Source code can be found at [`DataDog/datadog-operator`][4]. Go into the `datadog-operator-<tag>` folder.
+1. [Download the chart][3]:
 
    ```shell
-   curl -L https://github.com/DataDog/datadog-operator/archive/master.tar.gz | tar xvz
-   cd datadog-operator-master
+   curl -Lo datadog-agent-with-operator.tar.gz https://github.com/DataDog/datadog-operator/releases/latest/download/datadog-agent-with-operator.tar.gz
    ```
 
 2. Create a file with the spec of your agent. The simplest configuration is:
@@ -34,11 +33,11 @@ Here are the steps:
        name: "datadog/agent:latest"
    ```
 
-   Replace `<DATADOG_API_KEY>` and `<DATADOG_APP_KEY>` with your [Datadog API and application keys][5]
+   Replace `<DATADOG_API_KEY>` and `<DATADOG_APP_KEY>` with your [Datadog API and application keys][4]
 
 3. Deploy the Datadog agent with the above configuration file:
    ```shell
-   helm install --set-file agent_spec=/path/to/your/datadog-agent.yaml datadog chart/datadog-agent-with-operator
+   helm install --set-file agent_spec=/path/to/your/datadog-agent.yaml datadog datadog-agent-with-operator.tar.gz
    ```
 
 ## Cleanup
@@ -52,6 +51,5 @@ helm delete datadog
 
 [1]: https://helm.sh
 [2]: https://kubernetes.io/docs/tasks/tools/install-kubectl/
-[3]: https://github.com/DataDog/datadog-operator/archive/master.tar.gz
-[4]: https://github.com/DataDog/datadog-operator
-[5]: https://app.datadoghq.com/account/settings#api
+[3]: https://github.com/DataDog/datadog-operator/releases/latest/download/datadog-agent-with-operator.tar.gz
+[4]: https://app.datadoghq.com/account/settings#api

hack/release/generate-chart-tarball.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+set -e
+
+source "$(dirname $0)/../os-env.sh"
+
+TAG=""
+if [ $# -gt 0 ]; then
+    TAG=$1
+    echo "TAG=$TAG"
+else
+    echo "First parameter should be the new TAG"
+    exit 1
+fi
+VERSION=${TAG:1}
+
+GIT_ROOT=$(git rev-parse --show-toplevel)
+PLUGIN_NAME=kubectl-datadog
+OUTPUT_FOLDER=$GIT_ROOT/dist
+TARBALL_NAME="$PLUGIN_NAME_$VERSION.tar.gz"
+
+cp -Lr $GIT_ROOT/chart/* $OUTPUT_FOLDER/
+
+for CHART in datadog-operator datadog-agent-with-operator
+do
+    $SED "s/PLACEHOLDER_VERSION/$VERSION/g" $OUTPUT_FOLDER/$CHART/Chart.yaml
+    $SED "s/PLACEHOLDER_VERSION/$VERSION/g" $OUTPUT_FOLDER/$CHART/values.yaml
+    tar -zcvf $OUTPUT_FOLDER/$CHART.tar.gz -C $OUTPUT_FOLDER $CHART
+done