fix: match file names in helm registry index and release assets (#1373)

Adding a separate Helm chart for CRDs.

:exclamation: The charts are not strictly dependent to one another and
need to be separately managed and installed. Meaning we need to document
that both of those need to be updated and installed.

Fair questions that might arise:

**Why isn't CRD chart a declared dependency for `odigos`?**

Helm merges dependent resources together with the ones from
dependencies. We'd be exactly where we are right now if we did that.

**Why not use the official `crd` support?**

Helm really doesn't "support" CRDs. It's an opt-out feature of "we don't
know how we want to do it so we don't for now". Resources declared as
CRDs(different from declaring them under `templates`) are not updated.

**How do other charts do it then?**

All charts I've encountered(cert-manager, jaeger, contour) have CRDs
under a flag and include them in the same chart as the rest of the
resources **but then** do not depend on them in in the install. CRs are
created either only by the user or later in the applications life-cycle.
This doesn't work for us since we declare Odigos Config among resources
in the application chart. That begs the question whether Odigos Config
must be a CR at all or could it be a config map instead - we wouldn't
get "type-checking" by k8s API but would gain some flexibility and could
release our charts as one.

.github/workflows/release.yml

@@ -1,4 +1,4 @@
-name: Release Odigos CLI
+name: Release Odigos
 
 on:
   workflow_dispatch:
@@ -137,6 +137,7 @@ jobs:
             echo "TAG=${{ github.event.client_payload.tag }}" >> $GITHUB_ENV
           else
             echo "Unknown event type"
+            echo "TAG=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV
             exit 1
           fi
 
@@ -156,4 +157,6 @@ jobs:
           version: v3.15.2
 
       - name: Release Helm charts
-        run: sh ./scripts/release-charts.sh
+        env:
+          GH_TOKEN: ${{ github.token }}
+        run: bash ./scripts/release-charts.sh

helm/odigos/Chart.yaml

@@ -1,8 +1,8 @@
 apiVersion: v2
 name: odigos
-description: Odigos Helm Chart for Kubernetes
+description: Odigos distribution for Kubernetes
 type: application
-# v0.0.0 will be replaced by the git tag version on release
-version: "v0.0.0"
-appVersion: "v0.0.0"
+# 0.0.0 will be replaced by the git tag version on release
+version: "0.0.0"
+appVersion: "0.0.0"
 icon: https://d2q89wckrml3k4.cloudfront.net/logo.png

scripts/release-charts.sh

@@ -1,8 +1,17 @@
-#!/usr/bin/env sh
+#!/usr/bin/env bash
 
 # Setup
 TMPDIR="$(mktemp -d)"
-CHARTDIR="helm/odigos"
+CHARTDIRS=("helm/odigos")
+
+prefix () {
+	echo "${@:1}"
+	echo "${@:2}"
+	for i in "${@:2}"; do
+		echo "Renaming $i to $1$i"
+		mv "$i" "$1$i"
+	done
+}
 
 if [ -z "$TAG" ]; then
 	echo "TAG required"
@@ -14,7 +23,7 @@ if [ -z "$GITHUB_REPOSITORY" ]; then
 	exit 1
 fi
 
-if [[ $(git diff -- $CHARTDIR | wc -c) -ne 0 ]]; then
+if [[ $(git diff -- ${CHARTDIRS[*]} | wc -c) -ne 0 ]]; then
 	echo "Helm chart dirty. Aborting."
 	exit 1
 fi
@@ -24,16 +33,21 @@ helm repo add odigos https://odigos-io.github.io/odigos-charts 2> /dev/null || t
 git worktree add $TMPDIR gh-pages -f
 
 # Update index with new packages
-sed -i -E 's/v0.0.0/'"${TAG}"'/' $CHARTDIR/Chart.yaml
-helm package helm/* -d $TMPDIR
+for chart in "${CHARTDIRS[@]}"
+do
+	echo "Updating $chart/Chart.yaml with version ${TAG#v}"
+	sed -i -E 's/0.0.0/'"${TAG#v}"'/' $chart/Chart.yaml
+done
+helm package ${CHARTDIRS[*]} -d $TMPDIR
 pushd $TMPDIR
+prefix 'test-helm-assets-' *.tgz
 helm repo index . --merge index.yaml --url https://github.com/$GITHUB_REPOSITORY/releases/download/$TAG/
+git diff -G apiVersion
 
 # The check avoids pushing the same tag twice and only pushes if there's a new entry in the index
 if [[ $(git diff -G apiVersion | wc -c) -ne 0 ]]; then
 	# Upload new packages
-	rename 'odigos' 'test-helm-assets-odigos' *.tgz
-	gh release upload -R $GITHUB_REPOSITORY $TAG $TMPDIR/*.tgz
+	gh release upload -R $GITHUB_REPOSITORY $TAG $TMPDIR/*.tgz || exit 1
 
 	git add index.yaml
 	git commit -m "update index with $TAG" && git push
@@ -45,5 +59,5 @@ else
 fi
 
 # Roll back chart version changes
-git checkout $CHARTDIR
+git checkout ${CHARTDIRS[*]}
 git worktree remove $TMPDIR -f || echo " -> Failed to clean up temp worktree"