add bom check

Signed-off-by: Gregor Zeitlinger <gregor.zeitlinger@grafana.com>

Author: zeitlinger

mise.toml

@@ -46,9 +46,12 @@ run = "lychee --include-fragments ."
 [tasks.lint-gh-actions]
 run = "zizmor .github/"
 
+[tasks.lint-bom]
+run = "scripts/lint-bom.sh"
+
 [tasks.lint-rest]
 description = "All lints not covered by super linter"
-depends = ["lint-links", "lint-gh-actions"]
+depends = ["lint-links", "lint-gh-actions", "lint-bom"]
 
 [tasks.acceptance-test]
 description = "Run OATs acceptance tests"

prometheus-metrics-bom/pom.xml

@@ -54,6 +54,11 @@
         <artifactId>prometheus-metrics-exporter-opentelemetry-no-otel</artifactId>
         <version>${project.version}</version>
       </dependency>
+      <dependency>
+        <groupId>io.prometheus</groupId>
+        <artifactId>prometheus-metrics-exporter-opentelemetry-otel-agent-resources</artifactId>
+        <version>${project.version}</version>
+      </dependency>
       <dependency>
         <groupId>io.prometheus</groupId>
         <artifactId>prometheus-metrics-exporter-pushgateway</artifactId>

scripts/lint-bom.sh

@@ -0,0 +1,68 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+function first_artifact_id() {
+  local bom_file="$1"
+  grep '<artifactId>' "$bom_file" | head -n 2 | tail -n 1 | sed 's/.*<artifactId>\(.*\)<\/artifactId>.*/\1/'
+}
+
+function add_dir() {
+  local dir="$1"
+  if [[ ! -d "$dir" ]]; then
+    echo "Directory $dir does not exist."
+    exit 1
+  fi
+
+  if [[ $ignore_dirs =~ $dir ]]; then
+    echo "Skipping $dir"
+    return
+  fi
+
+  if [[ ! -f "$dir/pom.xml" ]]; then
+    echo "File $dir/pom.xml does not exist."
+    exit 1
+  fi
+
+  artifact_id=$(first_artifact_id "$dir/pom.xml")
+  if [[ -z "$artifact_id" ]]; then
+    echo "No artifactId found in $dir/pom.xml"
+    exit 1
+  fi
+
+  echo "Found artifactId '$artifact_id' in $dir/pom.xml"
+  # add to want
+  if [[ -z "${want+x}" ]]; then
+    want="$artifact_id"
+  else
+    want="$want
+$artifact_id"
+  fi
+}
+
+declare want
+ignore_dirs="prometheus-metrics-parent"
+
+for dir in prometheus-metrics*; do
+  add_dir "$dir"
+done
+for dir in prometheus-metrics-tracer/prometheus-metrics* ; do
+  if [[ -d "$dir" ]]; then
+    add_dir "$dir"
+  fi
+done
+
+want=$(echo "$want" | sort | uniq)
+have="$(grep '<artifactId>prometheus-metrics' prometheus-metrics-bom/pom.xml | sed 's/.*<artifactId>\(.*\)<\/artifactId>.*/\1/'| sort)"
+
+if [[ "$want" != "$have" ]]; then
+  echo "The BOM file prometheus-metrics-bom/bom.xml does not match the current directory contents."
+  echo "Expected: $want"
+  echo "Found: $have"
+
+  diff -u <(echo "$have" ) <(echo "$want")
+
+  exit 1
+else
+  echo "BOM file is up to date."
+fi