Add script to compare SV reward weights

- Add script to compare SV reward weights between configs and running
  nodes

Author: giner

scripts/diff-reward-weights.sh

@@ -0,0 +1,119 @@
+#!/usr/bin/env bash
+
+# diff-reward-weights.sh
+#
+# Compare the reward weights in the approved-sv-id-values.yaml file with the weights from the DSO API
+
+set -euo pipefail
+
+CURL_TIMEOUT=5
+CURL_CMD=(curl -fsS -m "$CURL_TIMEOUT")
+
+ENVS_AND_SCAN_URLS=(
+  DevNet  https://scan.sv-1.dev.global.canton.network.sync.global
+  TestNet https://scan.sv-1.test.global.canton.network.sync.global
+  MainNet https://scan.sv-1.global.canton.network.sync.global
+)
+
+SCRIPTS_DIR=$(dirname "$0")
+
+[[ -t 1 ]] && OUTPUT_IS_TERMINAL=true || OUTPUT_IS_TERMINAL=false
+
+usage() {
+  echo "Usage: $(basename "$0") [-q]"
+  echo
+  echo "Options:"
+  echo "  -q  Quiet mode. Don't show the diff."
+}
+
+config_diff() {
+  local config_file=$1
+  local scan_url=$2
+
+  local configs_dir="$SCRIPTS_DIR/../configs"
+  local dso_url="$scan_url/api/scan/v0/dso"
+
+  echo "$config_file -> $dso_url"
+
+  diff_errors=()
+
+  local dso_data; dso_data=$(
+    "${CURL_CMD[@]}" "$dso_url"
+  ) || diff_errors+=("ERROR: Unable to fetch DSO from $dso_url")
+
+  local weights_from_file; weights_from_file=$(
+    yq -eo json . "$configs_dir/$config_file" | jq -eS '[.approvedSvIdentities[] | {(.name): .rewardWeightBps}] | add'
+  ) || diff_errors+=("ERROR: Unable to read and parse weights from $config_file")
+
+  local weights_from_url; weights_from_url=$(
+    "${CURL_CMD[@]}" "$dso_url" | jq -eS '[.dso_rules.contract.payload.svs[][1] | {(.name): .svRewardWeight | tonumber}] | add'
+  ) || diff_errors+=("ERROR: Unable to fetch and parse weights from $dso_url")
+
+  if [[ ${#diff_errors[@]} -eq 0 ]]; then
+    local diff_options=()
+
+    if [[ $OUTPUT_IS_TERMINAL == true ]]; then
+      diff_options+=("--color=always")
+    fi
+
+    if [[ ${QUIET-} == true ]]; then
+      diff_options+=("--brief")
+    fi
+
+    local return_code
+    diff_result=$(diff -su "${diff_options[@]}" --label "$config_file" --label "$dso_url" <(echo "$weights_from_file") <(echo "$weights_from_url")) && return_code=$? || return_code=$?
+    echo "$diff_result"
+
+    return "$return_code"
+  else
+    for error in "${diff_errors[@]}"; do
+      echo "$error" >&2
+    done
+
+    return 1
+  fi
+}
+
+compare() {
+  local envs_and_scan_urls=("${ENVS_AND_SCAN_URLS[@]}")
+  local return_code=0
+
+  for ((i = 0; i < ${#envs_and_scan_urls[@]}; i += 2)); do
+    local env=${envs_and_scan_urls[i]}
+    local scan_url=${envs_and_scan_urls[i + 1]}
+
+    local exit_code
+    config_diff "$env/approved-sv-id-values.yaml" "$scan_url" && exit_code=$? || exit_code=$?
+    return_code=$((return_code | exit_code))
+    echo
+  done
+
+  return "$return_code"
+}
+
+main() {
+  case ${1-} in
+    -q)
+      QUIET=true
+      ;;
+    -h|--help)
+      usage
+      exit 0
+      ;;
+    "")
+      ;;
+    *)
+      echo "Unknown option: $1"
+      echo
+      usage
+      exit 1
+      ;;
+  esac
+
+  local result exit_code
+  result=$(compare) && exit_code=$? || exit_code=$?
+  echo "$result" | less --quit-if-one-screen --no-init --RAW-CONTROL-CHARS
+  exit "$exit_code"
+}
+
+main "$@"