From d4b90c499abb8ffe064b802ff3aff9eb1dc87204 Mon Sep 17 00:00:00 2001
From: Marco Ippolito <marcoippolito54@gmail.com>
Date: Tue, 30 May 2023 10:32:27 +0200
Subject: [PATCH] tools: automate histogram update

PR-URL: https://github.com/nodejs/node/pull/48171
Refs: https://github.com/nodejs/security-wg/issues/828
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
---
 .github/workflows/tools.yml            |  9 ++++
 tools/dep_updaters/update-histogram.sh | 74 ++++++++++++++++++++++++++
 2 files changed, 83 insertions(+)
 create mode 100755 tools/dep_updaters/update-histogram.sh

diff --git a/.github/workflows/tools.yml b/.github/workflows/tools.yml
index c6e09a04d3f8b7..5b5d79dbb58a25 100644
--- a/.github/workflows/tools.yml
+++ b/.github/workflows/tools.yml
@@ -24,6 +24,7 @@ on:
           - doc
           - eslint
           - googletest
+          - histogram
           - icu
           - libuv
           - lint-md-dependencies
@@ -147,6 +148,14 @@ jobs:
               cat temp-output
               tail -n1 temp-output | grep "NEW_VERSION=" >> "$GITHUB_ENV" || true
               rm temp-output
+          - id: histogram
+            subsystem: deps
+            label: dependencies
+            run: |
+              ./tools/dep_updaters/update-histogram.sh > temp-output
+              cat temp-output
+              tail -n1 temp-output | grep "NEW_VERSION=" >> "$GITHUB_ENV" || true
+              rm temp-output
           - id: icu
             subsystem: deps
             label: dependencies, test
diff --git a/tools/dep_updaters/update-histogram.sh b/tools/dep_updaters/update-histogram.sh
new file mode 100755
index 00000000000000..5116583562ca4a
--- /dev/null
+++ b/tools/dep_updaters/update-histogram.sh
@@ -0,0 +1,74 @@
+#!/bin/sh
+set -e
+# Shell script to update histogram in the source tree to specific version
+
+BASE_DIR=$(cd "$(dirname "$0")/../.." && pwd)
+DEPS_DIR="$BASE_DIR/deps"
+
+[ -z "$NODE" ] && NODE="$BASE_DIR/out/Release/node"
+[ -x "$NODE" ] || NODE=$(command -v node)
+
+# shellcheck disable=SC1091
+. "$BASE_DIR/tools/dep_updaters/utils.sh"
+
+NEW_VERSION="$("$NODE" --input-type=module <<'EOF'
+const res = await fetch('https://api.github.com/repos/HdrHistogram/HdrHistogram_c/releases/latest');
+if (!res.ok) throw new Error(`FetchError: ${res.status} ${res.statusText}`, { cause: res });
+const { tag_name } = await res.json();
+console.log(tag_name.replace('v', ''));
+EOF
+)"
+
+CURRENT_VERSION=$(grep "#define HDR_HISTOGRAM_VERSION" ./deps/histogram/include/hdr/hdr_histogram_version.h | sed -n "s/^.*VERSION \"\(.*\)\"/\1/p")
+
+echo "Comparing $NEW_VERSION with $CURRENT_VERSION"
+
+if [ "$NEW_VERSION" = "$CURRENT_VERSION" ]; then
+  echo "Skipped because histogram is on the latest version."
+  exit 0
+fi
+
+echo "Making temporary workspace"
+
+WORKSPACE=$(mktemp -d 2> /dev/null || mktemp -d -t 'tmp')
+
+cleanup () {
+  EXIT_CODE=$?
+  [ -d "$WORKSPACE" ] && rm -rf "$WORKSPACE"
+  exit $EXIT_CODE
+}
+
+trap cleanup INT TERM EXIT
+
+HISTOGRAM_TARBALL="$NEW_VERSION.tar.gz"
+
+cd "$WORKSPACE"
+
+echo "Fetching histogram source archive"
+
+curl -sL -o "$HISTOGRAM_TARBALL" "https://github.com/HdrHistogram/HdrHistogram_c/archive/refs/tags/$HISTOGRAM_TARBALL"
+
+log_and_verify_sha256sum "histogram" "$HISTOGRAM_TARBALL"
+
+gzip -dc "$HISTOGRAM_TARBALL" | tar xf -
+
+rm "$HISTOGRAM_TARBALL"
+
+mv "HdrHistogram_c-$NEW_VERSION" histogram
+
+cp "$WORKSPACE/histogram/include/hdr/hdr_histogram_version.h" "$WORKSPACE/histogram/include/hdr/hdr_histogram.h" "$DEPS_DIR/histogram/include/hdr"
+
+cp "$WORKSPACE/histogram/src/hdr_atomic.h" "$WORKSPACE/histogram/src/hdr_malloc.h" "$WORKSPACE/histogram/src/hdr_tests.h" "$WORKSPACE/histogram/src/hdr_histogram.c" "$DEPS_DIR/histogram/src"
+
+
+echo "All done!"
+echo ""
+echo "Please git add histogram, commit the new version:"
+echo ""
+echo "$ git add -A deps/histogram"
+echo "$ git commit -m \"deps: update histogram to $NEW_VERSION\""
+echo ""
+
+# The last line of the script should always print the new version,
+# as we need to add it to $GITHUB_ENV variable.
+echo "NEW_VERSION=$NEW_VERSION"