Add script to update Felix config in CE

scripts/felix-update-config-ce.sh

@@ -0,0 +1,140 @@
+#!/usr/bin/env bash
+
+###############################################################################
+#                                                                             #
+#   felix-update-config-ce.sh                                                 #
+#   Created: 2026-02-05                                                       #
+#                                                                             #
+#   Description: Synchronizes Felix configuration JSON files from GitHub     #
+#   repos into local documentation paths for Calico Enterprise versions.      #
+#                                                                             #
+###############################################################################
+
+# --- Safety & Environment ---
+# -e: Exit on error | -u: Exit on unset vars | -o pipefail: Pipeline error catch
+set -euo pipefail
+
+# --- Global Constants (No Magic Numbers) ---
+readonly SUCCESS=0
+readonly E_MISSING_TOKEN=1
+readonly E_INVALID_JSON=2
+readonly VERSIONS_FILE="calico-enterprise_versions.json"
+
+# --- Global Variables ---
+VERSIONS=($(jq -r '.[]' "$VERSIONS_FILE"))
+CLEANUP_FILES=() # Array to track temp files for Option 1 cleanup
+
+# --------------------------------------------------------------------------- #
+# cleanup()                                                                   #
+# Internal function triggered on script exit to remove all temp files.        #
+# --------------------------------------------------------------------------- #
+cleanup() {
+    local file
+    for file in "${CLEANUP_FILES[@]:-}"; do
+        if [[ -f "$file" ]]; then
+            rm -f "$file"
+        fi
+    done
+}
+
+# Register the cleanup function to run on EXIT
+trap cleanup EXIT
+
+# --------------------------------------------------------------------------- #
+# update_felix_config()                                                       #
+# Downloads a remote JSON file and replaces a local target file.              #
+# Parameters: Uses global $VERSION, $LOCAL_PATH, and $REMOTE_URL.             #
+# --------------------------------------------------------------------------- #
+update_felix_config() {
+    local tmpfile
+    tmpfile=$(mktemp -t remote-url-output.XXXXXX)
+
+    # Track this file in the global cleanup array
+    CLEANUP_FILES+=("$tmpfile")
+
+    printf "%s\n\n" "Begin processing $VERSION"
+    printf "%s\n" "Target path: $LOCAL_PATH"
+    printf "%s\n" "Source URL: $REMOTE_URL"
+
+    curl -fsSL \
+          -H "Authorization: token $GITHUB_TOKEN" \
+          -H "Accept: application/vnd.github.v3.raw" \
+          -o "$tmpfile" \
+          "$REMOTE_URL"
+
+    # Validate JSON integrity before overwriting local files
+    if jq -e . "$tmpfile" >/dev/null 2>&1; then
+        echo "Success: $tmpfile is valid JSON."
+    else
+        echo "Error: $tmpfile contains invalid JSON." >&2
+        exit "$E_INVALID_JSON"
+    fi
+
+    mv "$tmpfile" "$LOCAL_PATH"
+    printf "%s\n\n\n" "Finished processing $VERSION."
+}
+
+# --------------------------------------------------------------------------- #
+# update_master()                                                             #
+# Specific logic for updating from the master branch.                         #
+# --------------------------------------------------------------------------- #
+update_master () {
+    VERSION="master"
+    LOCAL_PATH="calico-enterprise/_includes/components/FelixConfig/config-params.json"
+    REMOTE_URL="https://api.github.com/repos/tigera/calico-private/contents/felix/docs/config-params.json?ref=master"
+    update_felix_config
+}
+
+# --------------------------------------------------------------------------- #
+# update_versions()                                                           #
+# Iterates through versions to update versioned documentation branches.       #
+# --------------------------------------------------------------------------- #
+update_versions() {
+    local i
+    local branch
+    local base_version
+
+    for i in "${!VERSIONS[@]}"; do
+        VERSION="${VERSIONS[$i]}"
+        base_version="${VERSION%-*}"
+
+        # Logic to determine branch name based on version suffix
+        if [[ "$VERSION" == *"-2" ]]; then
+            branch="release-calient-v${base_version}"
+        elif [[ "$VERSION" == *"-1" ]]; then
+            branch="release-calient-v${base_version}-1"
+        else
+            branch="release-v${VERSION}"
+        fi
+
+        LOCAL_PATH="calico-enterprise_versioned_docs/version-${VERSION}/_includes/components/FelixConfig/config-params.json"
+        REMOTE_URL="https://api.github.com/repos/tigera/calico-private/contents/felix/docs/config-params.json?ref=${branch}"
+
+        # Skip logic for specific version (v3.20 transition)
+        if [[ "$VERSION" == "3.20-2" ]]; then
+            printf "%s\n" "Skipping $VERSION: No action required."
+            continue
+        fi
+
+        update_felix_config
+    done
+}
+
+# --- Main Logic ---
+
+# 1. Validate Environment
+# The ${VAR:-} syntax prevents 'unbound variable' errors during the check
+if [[ -z "${GITHUB_TOKEN:-}" ]]; then
+    echo "Error: GITHUB_TOKEN is not set." >&2
+    exit "$E_MISSING_TOKEN"
+fi
+
+# 2. Print found versions
+printf "Versions to process: %s\n" "${VERSIONS[*]}"
+
+# 3. Execute Updates
+update_master
+update_versions
+
+printf "%s\n" "All updates are complete."
+exit "$SUCCESS"