[chore] Automate OBI sub-chart dependency update PRs

.github/workflows/update_chart_dependencies.yaml

@@ -5,8 +5,9 @@ name: Check for new chart dependency updates
 # Specifically, it:
 #   1. Checks for new versions of (subchart) dependencies listed in chart.yaml.
 #   2. Updates chart.yaml with new versions where applicable.
-#   3. If the 'opentelemetry-operator' subchart is updated in chart.yaml, it also updates related
-#      image tags in values.yaml.
+#   3. Updates related values.yaml defaults when a subchart version bump requires it.
+#   4. If the 'opentelemetry-operator' subchart is updated in chart.yaml, it also updates related
+#      image tags in values.yaml and CRD assets when needed.
 
 on:
   schedule:
@@ -31,6 +32,10 @@ jobs:
             component: 'operator'
             yaml_file_path: 'helm-charts/splunk-otel-collector/Chart.yaml'
             dependency_name: 'opentelemetry-operator'
+          - name: 'obi'
+            component: 'chart'
+            yaml_file_path: 'helm-charts/splunk-otel-collector/Chart.yaml'
+            dependency_name: 'opentelemetry-ebpf-instrumentation'
     env:
       DEBUG_MODE: ${{ github.event.inputs.DEBUG_MODE }}
     steps:
@@ -95,7 +100,6 @@ jobs:
           echo "commit_message_finalize=$commit_finalize" >> $GITHUB_OUTPUT
           echo "body_open=$body_open" >> $GITHUB_OUTPUT
           echo "body_finalize=$body_finalize" >> $GITHUB_OUTPUT
-
           [ "$NEED_UPDATE" = "1" ] && echo "chlog_note_chart=Bump ${NAME} to ${LATEST_VER} in ${YAML_PATH}" >> $GITHUB_OUTPUT
           if [ "$CRDS_UPDATE" = "1" ]; then
             CRDS_CHLOG="Bump subchart opentelemetry-operator-crds to ${CRDS_VER}. Refer to further [instructions](https://github.com/signalfx/splunk-otel-collector-chart/blob/main/helm-charts/splunk-otel-collector/charts/opentelemetry-operator-crds/README.md#upgrade-notes) for updating CRDs if using \`operatorcrds.install\` option."

ci_scripts/update-chart-dependency.sh

@@ -38,6 +38,54 @@ update_operator_images() {
     $SCRIPT_DIR/update-images-operator-otel.sh
 }
 
+# Function: update_obi_image_tag
+# Description: Keeps the parent chart's default OBI image tag aligned with the subchart version.
+update_obi_image_tag() {
+    local values_file="$VALUES_FILE_PATH"
+    local normalized_ver="${LATEST_VER#v}"  # Strip leading 'v' if present
+    local target_tag="v$normalized_ver"
+    local current_tag
+    local updated_file
+
+    current_tag=$(yq eval '.obi.image.tag' "$values_file")
+    echo "Current OBI image tag in values.yaml is $current_tag"
+
+    if [ "$current_tag" != "$target_tag" ]; then
+        echo "Updating OBI image tag to $target_tag in values.yaml"
+        updated_file=$(mktemp "${values_file}.XXXXXX")
+        awk -v target_tag="$target_tag" '
+            BEGIN {
+                in_obi=0
+                in_image=0
+                updated=0
+                image_indent=""
+            }
+            /^obi:/ { in_obi=1 }
+            in_obi && /^[^[:space:]][^:]*:/ && !/^obi:/ { in_obi=0; in_image=0 }
+            in_obi && match($0, /^([[:space:]]+)image:/, matches) {
+                in_image=1
+                image_indent=matches[1]
+            }
+            in_image && $0 ~ ("^" image_indent "[^[:space:]][^:]*:") && $0 !~ ("^" image_indent "image:") { in_image=0 }
+            in_image && $0 ~ ("^" image_indent "[[:space:]]+tag: ") {
+                print image_indent "  tag: \"" target_tag "\""
+                updated=1
+                in_image=0
+                next
+            }
+            { print }
+            END {
+                if (!updated) {
+                    exit 1
+                }
+            }
+        ' "$values_file" > "$updated_file"
+        mv "$updated_file" "$values_file"
+    else
+        echo "OBI image tag is already up to date in values.yaml"
+    fi
+}
+
 # Function: maybe_update_chart_dependency_version
 # Description: Updates the chart dependency version if a newer version is available.
 maybe_update_chart_dependency_version() {
@@ -65,6 +113,8 @@ maybe_update_chart_dependency_version() {
 
       if [ "$SUBCHART_NAME" == "opentelemetry-operator" ]; then
         update_operator_images
+      elif [ "$SUBCHART_NAME" == "opentelemetry-ebpf-instrumentation" ]; then
+        update_obi_image_tag
       fi
 
       echo "Current git diff:"