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Added SBOM generation and verification scripts for Java
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‎.evergreen/.evg.yml‎

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@@ -855,6 +855,19 @@ tasks:
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args:
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- ".evergreen/static-checks.sh"
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- name: "verify-sbom-task"
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tags: [ "sbom" ]
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commands:
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- command: shell.exec
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type: "test"
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params:
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working_dir: "src"
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shell: "bash"
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script: |
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${PREPARE_SHELL}
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echo "Verifying SBOM files"
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bash .evergreen/verify-sbom.sh
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- name: "test-bson-and-crypt-task"
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commands:
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- func: "run-tests"
@@ -2231,6 +2244,20 @@ buildvariants:
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tasks:
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- name: "static-analysis-task"
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- name: "verify-sbom"
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display_name: "Verify SBOM freshness"
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run_on: ubuntu2204-small
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# Only trigger when dependency manifests or the SBOM itself change.
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paths:
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- "gradle/libs.versions.toml"
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- "gradle.properties"
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- "settings.gradle.kts"
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- "build.gradle.kts"
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- "**/build.gradle.kts"
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- "sbom.json"
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tasks:
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- name: "verify-sbom-task"
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- name: "perf"
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display_name: "Performance Tests"
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tags: [ "perf-variant" ]

‎.evergreen/generate-sbom.sh‎

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#!/usr/bin/env bash
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set -euo pipefail
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# Ephemeral SBOM generator (Gradle/Java) using mise + CycloneDX Gradle plugin.
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# Environment overrides:
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# MISE_JAVA_VERSION Java (Temurin) major version (default from Gradle sourceCompatibility or 21)
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# SBOM_OUT Output filename (default sbom.json)
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#
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# Usage: bash .evergreen/generate-sbom.sh
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## resolve_java_version
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# Determines the required Java version by finding the maximum sourceCompatibility in Gradle files.
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resolve_java_version() {
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local max_version
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max_version=$(find . -name "*.gradle.kts" -exec grep -h 'sourceCompatibility = JavaVersion.VERSION_' {} \; | sed 's/.*VERSION_\([0-9]*\).*/\1/' | sort -n | tail -1)
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echo "${max_version:-21}"
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}
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JAVA_VERSION="${MISE_JAVA_VERSION:-$(resolve_java_version)}"
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JQ_VERSION="${JQ_VERSION:-latest}" # jq version or 'latest'
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OUT_JSON="${SBOM_OUT:-sbom.json}"
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log() { printf '\n[sbom] %s\n' "$*"; }
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# Ensure mise is available (installed locally in $HOME) and PATH includes shims.
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ensure_mise() {
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# Installer places binary in ~/.local/bin/mise by default.
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if ! command -v mise >/dev/null 2>&1; then
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log "Installing mise"
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curl -fsSL https://mise.run | bash >/dev/null 2>&1 || { log "mise install script failed"; exit 1; }
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fi
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# Ensure ~/.local/bin precedes so 'mise' is found even if shims absent.
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export PATH="$HOME/.local/bin:$HOME/.local/share/mise/shims:$HOME/.local/share/mise/bin:$PATH"
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if ! command -v mise >/dev/null 2>&1; then
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log "mise not found on PATH after install"; ls -al "$HOME/.local/bin" || true; exit 1
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fi
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}
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## resolve_toolchain_flags
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# Returns space-separated tool@version specs required for SBOM generation.
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resolve_toolchain_flags() {
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printf 'java@temurin-%s jq@%s' "$JAVA_VERSION" "$JQ_VERSION"
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}
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## prepare_exec_prefix
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# Builds the mise exec prefix for ephemeral command runs.
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prepare_exec_prefix() {
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local tools
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tools="$(resolve_toolchain_flags)"
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echo "mise exec $tools --"
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}
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## generate_sbom
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# Executes Gradle CycloneDX plugin to generate SBOM.
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generate_sbom() {
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log "Generating SBOM using Gradle CycloneDX plugin"
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local exec_prefix
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exec_prefix="$(prepare_exec_prefix)"
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$exec_prefix ./gradlew cyclonedxBom || {
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log "SBOM generation failed"; exit 1; }
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log "SBOM generated"
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}
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## install_toolchains
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# Installs required runtime versions into the local mise cache unconditionally.
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# (mise skips download if already present.)
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install_toolchains() {
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local tools
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tools="$(resolve_toolchain_flags)"
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log "Installing toolchains: $tools"
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mise install $tools >/dev/null
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}
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## format_sbom
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# Formats the SBOM JSON with jq (required). Exits non-zero if formatting fails.
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format_sbom() {
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log "Formatting SBOM via jq@$JQ_VERSION"
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if ! mise exec jq@"$JQ_VERSION" -- jq . "$OUT_JSON" > "$OUT_JSON.tmp" 2>/dev/null; then
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log "jq formatting failed"; return 1
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fi
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mv "$OUT_JSON.tmp" "$OUT_JSON"
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}
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## ensure_cyclonedx_cli
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# Downloads CycloneDX CLI binary if not available.
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ensure_cyclonedx_cli() {
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if [ ! -f /tmp/cyclonedx ]; then
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log "Downloading CycloneDX CLI"
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local arch
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arch="$(uname -m)"
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case "$arch" in
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x86_64) arch="x64" ;;
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aarch64) arch="arm64" ;;
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*) log "Unsupported architecture for CycloneDX CLI: $arch"; exit 1 ;;
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esac
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local url="https://github.com/CycloneDX/cyclonedx-cli/releases/latest/download/cyclonedx-linux-${arch}"
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curl -L -s -o /tmp/cyclonedx "$url" || { log "Failed to download CycloneDX CLI"; exit 1; }
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chmod +x /tmp/cyclonedx || { log "Failed to make CycloneDX CLI executable"; exit 1; }
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fi
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}
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## verify_sbom
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# Verifies the SBOM is valid CycloneDX format using CycloneDX CLI.
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verify_sbom() {
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log "Verifying SBOM validity with CycloneDX CLI"
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local size
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size=$(stat -c%s "$OUT_JSON" 2>/dev/null || echo 0)
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if [ "$size" -lt 1000 ]; then
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log "SBOM file too small (<1000 bytes)"; exit 1
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fi
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if ! /tmp/cyclonedx validate --input-file "$OUT_JSON" --fail-on-errors >/dev/null 2>&1; then
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log "SBOM validation failed"; exit 1
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fi
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log "SBOM verified successfully"
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}
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main() {
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ensure_mise
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install_toolchains
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generate_sbom
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format_sbom
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ensure_cyclonedx_cli
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verify_sbom
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}
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main "$@"

‎.evergreen/verify-sbom.sh‎

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#!/usr/bin/env bash
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set -euo pipefail
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# verify-sbom.sh: Enforces policy that when dependency manifest files change, the SBOM file must also change.
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# Generic so patterns can be repurposed for other artifact freshness checks.
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#
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# Configurable variables (override via env):
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# MANIFEST_PATTERNS Space-delimited gitignore-style patterns to monitor.
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# Default: gradle/libs.versions.toml gradle.properties settings.gradle.kts **/build.gradle.kts
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# SBOM_FILE Path to canonical SBOM file (default sbom.cdx.json)
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# EXIT_CODE_MISSING Exit code when manifests changed but SBOM did not (default 10)
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# SKIP_SBOM_VERIFY If set to 1, skip verification (default unset)
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# DIFF_BASE Explicit git ref/commit to diff against (optional). If unset, merge-base with origin/main or HEAD~1 fallback.
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# VERBOSE If set to 1, prints expanded manifest list and full diff file list.
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#
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# Behavior:
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# 1. Determine diff range (patch vs mainline) by attempting merge-base with origin/main.
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# 2. Capture changed files including both committed changes and staged/uncommitted (by combining git diff --name-status for range and working tree).
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# 3. Expand manifest patterns via git ls-files.
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# 4. If any manifest changed but SBOM_FILE not changed, fail with guidance.
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# 5. If SBOM_FILE changed, pass.
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# 6. If no manifest changed, pass.
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#
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# Local usage: run from repo root after making changes; exit codes surface policy status.
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MANIFEST_PATTERNS="${MANIFEST_PATTERNS:-build.gradle.kts gradle/libs.versions.toml gradle.properties settings.gradle.kts **/build.gradle.kts}"
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SBOM_FILE="${SBOM_FILE:-sbom.json}"
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EXIT_CODE_MISSING="${EXIT_CODE_MISSING:-10}"
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DIFF_BASE="${DIFF_BASE:-}" # optional user-provided base ref
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VERBOSE="${VERBOSE:-0}"
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log() { printf '\n[verify-sbom] %s\n' "$*"; }
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if [[ "${SKIP_SBOM_VERIFY:-}" == "1" ]]; then
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log "Skipping verification (SKIP_SBOM_VERIFY=1)"; exit 0; fi
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# Determine base for diff
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if [[ -n "$DIFF_BASE" ]]; then
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base_ref="$DIFF_BASE"
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else
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git fetch origin main >/dev/null 2>&1 || true
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base_ref="$(git merge-base HEAD origin/main 2>/dev/null || echo '')"
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if [[ -z "$base_ref" ]]; then
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# Fallback to previous commit
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base_ref="HEAD~1"
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fi
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fi
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range="$base_ref..HEAD"
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log "Using diff range: $range"
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# Committed diff
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committed_status="$(git diff --name-status $range || true)"
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# Working tree (staged + unstaged) diff vs HEAD
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wt_status="$(git diff --name-status HEAD || true)"
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# Combine and extract filenames (second column); preserve uniqueness
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changed_files=$(printf "%s\n%s\n" "$committed_status" "$wt_status" | awk '{print $2}' | grep -v '^$' | sort -u)
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if [[ $VERBOSE == 1 ]]; then
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log "Changed files:"; echo "$changed_files"
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fi
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# Expand manifest patterns to tracked files
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expanded_manifests=""
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for pattern in $MANIFEST_PATTERNS; do
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# git ls-files supports pathspec; '**' requires extglob-like; rely on grep fallback
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matches=$(git ls-files "$pattern" 2>/dev/null || true)
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if [[ -z "$matches" && "$pattern" == *"**"* ]]; then
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# Manual glob expansion for recursive pattern
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matches=$(git ls-files | grep -E "$(echo "$pattern" | sed 's/**/.*'/ | sed 's/\./\\./g')" || true)
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fi
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expanded_manifests+="$matches\n"
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done
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expanded_manifests=$(echo -e "$expanded_manifests" | grep -v '^$' | sort -u)
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if [[ $VERBOSE == 1 ]]; then
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log "Expanded manifests:"; echo "$expanded_manifests"
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fi
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manifest_hit=0
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manifest_changed_list=()
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while IFS= read -r mf; do
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if echo "$changed_files" | grep -Fxq "$mf"; then
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manifest_hit=1
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manifest_changed_list+=("$mf")
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fi
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done <<< "$expanded_manifests"
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if [[ $manifest_hit -eq 0 ]]; then
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log "No manifest changes detected; passing."
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exit 0
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fi
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if echo "$changed_files" | grep -Fxq "$SBOM_FILE"; then
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log "SBOM file '$SBOM_FILE' updated alongside manifest changes; pass."
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exit 0
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fi
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log "FAILURE: Manifest files changed but SBOM '$SBOM_FILE' was not modified." >&2
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log "Changed manifest(s):" >&2
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for mf in "${manifest_changed_list[@]}"; do echo " - $mf" >&2; done
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log "Regenerate SBOM locally (e.g., bash .evergreen/generate-sbom.sh) and commit '$SBOM_FILE'." >&2
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exit "$EXIT_CODE_MISSING"

‎build.gradle.kts‎

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* limitations under the License.
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*/
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import java.time.Duration
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import org.cyclonedx.model.*
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plugins {
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id("eclipse")
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id("idea")
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alias(libs.plugins.nexus.publish)
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id("org.cyclonedx.bom") version "2.3.1"
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}
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val nexusUsername: Provider<String> = providers.gradleProperty("nexusUsername")
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delayBetween.set(Duration.ofSeconds(10))
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}
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}
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tasks.cyclonedxBom {
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setGroup("org.mongodb")
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// includeConfigs is the list of configuration names to include when generating the BOM (leave empty to include every configuration), regex is supported
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setIncludeConfigs(listOf("runtimeClasspath","baseline"))
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// skipConfigs is a list of configuration names to exclude when generating the BOM, regex is supported
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//setSkipConfigs(listOf("(?i)(.*(compile|test|checkstyle|codenarc|spotbugs|detekt|analysis|zinc|dokka|commonizer|implementation|annotation).*)"))
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// skipProjects is a list of project names to exclude when generating the BOM
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setSkipProjects(listOf(rootProject.name, "bom"))
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// Specified the type of project being built. Defaults to 'library'
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setProjectType("library")
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// Specified the version of the CycloneDX specification to use. Defaults to '1.5'
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setSchemaVersion("1.5")
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// Boms destination directory. Defaults to 'build/reports'
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setDestination(project.file("./"))
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// The file name for the generated BOMs (before the file format suffix). Defaults to 'bom'
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setOutputName("sbom")
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// The file format generated, can be xml, json or all for generating both. Defaults to 'all'
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setOutputFormat("json")
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// declaration of the Object from OrganizationalContact
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var organizationalContact1 = OrganizationalContact()
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// setting the Name[String], Email[String] and Phone[String] of the Object
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organizationalContact1.setName("MongoDB, Inc.")
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// passing data to the plugin
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setOrganizationalEntity { oe ->
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oe.name = "MongoDB, Inc."
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oe.urls = listOf("www.mongodb.com")
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oe.addContact(organizationalContact1)
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}
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setVCSGit { ref ->
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ref.url = "https://github.com/mongodb/mongo-java-driver"
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}
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}

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