action: support for benchmark using GitHub actions in conjunction with Buildkite

.ci/scripts/bench.sh

@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+
+# Bash strict mode
+set -eo pipefail
+
+# Found current script directory
+RELATIVE_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+
+# Found project directory
+BASE_PROJECT="$(dirname "$(dirname "${RELATIVE_DIR}")")"
+
+# Run the microbenchmark in Buildkite and for such
+# it configures the required settings in the Buildkite runners
+# to execute the benchmarks afterwards
+
+## Buildkite specific configuration
+if [ "${CI}" == "true" ] ; then
+  # If HOME is not set then use the Buildkite workspace
+  # that's normally happening when running in the CI
+  # owned by Elastic.
+  if [ -z "${HOME}" ] ; then
+    HOME="${BUILDKITE_BUILD_CHECKOUT_PATH}"
+    export HOME
+  fi
+fi
+
+# Run benchmark
+echo "--- Execute benchmarks"
+"${BASE_PROJECT}/.ci/scripts/run-benchmarks.sh" "apm-agent-benchmark-results.json" "$(cat "${BASE_PROJECT}/.nvmrc")"
+
+echo "--- Send benchmark results"
+sendBenchmark "${ES_USER_SECRET}" "${ES_PASS_SECRET}" "${ES_URL_SECRET}" "apm-agent-benchmark-results.json"

.ci/scripts/prepare-benchmarks-env.sh

@@ -6,27 +6,42 @@
 # Usage:
 #   NODE_VERSION=...
 #   source .../prepare-benchmarks-env.sh
+#
+# Note: echo "--- ..." helps with presenting the output in Buildkite.
+#
 
 set -xeo pipefail
 
-if [[ -z "$NODE_VERSION" ]]; then
+if [[ -z "${NODE_VERSION}" ]]; then
   echo "prepare-benchmarks-env.sh: error: NODE_VERSION envvar is not set" >&2
   exit 1
 fi
 
+echo "--- Download nvm"
 # This particular configuration is required to be installed in the baremetal
 curl -sS -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.3/install.sh | bash
-export NVM_DIR="$HOME/.nvm"
+export NVM_DIR="${HOME}/.nvm"
+
+echo "--- Install nvm"
 set +x  # Disable xtrace because output using nvm.sh is huge.
-[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"
+# Flush positional arguments
+shift $#
+if [ -s "${NVM_DIR}/nvm.sh" ] ; then
+  \. "${NVM_DIR}/nvm.sh"
+fi
+
+# Check nvm command is available
 command -v nvm
 nvm --version
 
+echo "--- Run nvm install ${NODE_VERSION}"
 nvm install "${NODE_VERSION}"
-set -x
-
-npm config list
-npm install
 
+# Check node command is available
 node --version
 npm --version
+
+echo "--- Install dependencies"
+set -x
+npm config list
+npm install

.ci/scripts/run-benchmarks.sh

@@ -1,14 +1,25 @@
 #!/usr/bin/env bash
-set -xueo pipefail
 
+# Bash strict mode
+set -eo pipefail
+
+# Found current script directory
+RELATIVE_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+
+# Found project directory
+BASE_PROJECT="$(dirname "$(dirname "${RELATIVE_DIR}")")"
+
+# Arguments
 RESULT_FILE=$1
 NODE_VERSION=$2
 if [[ -z "$RESULT_FILE" || -z "$NODE_VERSION" ]]; then
   echo "usage: run-benchmarks.sh RESULT_FILE NODE_VERSION"
   exit 1
 fi
 
-SCRIPTPATH=$(dirname "$0")
-source ./${SCRIPTPATH}/prepare-benchmarks-env.sh
+# Prepare benchmark environment
+export NODE_VERSION="${NODE_VERSION}"
+source "${RELATIVE_DIR}/prepare-benchmarks-env.sh"
 
+# Run benchmark
 npm run bench:ci "${RESULT_FILE}" "${NODE_VERSION}"