get_gha_waiting_time.sh

#!/bin/bash

if ! [ -x "$(command -v gdate)" ]; then
    echo 'Error: git is not installed. Run "brew install coreutils"' >&2
    exit 1
fi

if ! [ -x "$(command -v gh)" ]; then
    echo 'Error: git is not installed. Run "brew install gh"' >&2
    exit 1
fi

[ "$DEBUG" = "1" ] && set -x
set -e
set -o pipefail

export GH_PAGER="less -FX"

WORKFLOW_ID="$1"
LIMIT=${2:-100}
OWNER="$(gh repo view --json owner -q ".owner.login")"
REPO="$(gh repo view --json name -q ".name")"

# GitHub CLI api
# https://cli.github.com/manual/gh_api

echo "Downloading list of the last ${LIMIT} workflow runs for '${WORKFLOW_ID}'..."

IFS=$'\n' read -r -d '' -a RUN_IDS < <( gh api \
-H "Accept: application/vnd.github+json" \
"/repos/${OWNER}/${REPO}/actions/workflows/${WORKFLOW_ID}/runs?status=success&per_page=${LIMIT}" \
-q ".workflow_runs[].id" && printf '\0')

echo "Found ${#RUN_IDS[@]} runs to check."

mkdir -p logs

for RUN_ID in "${RUN_IDS[@]}"
do
    if [ -d "logs/${RUN_ID}" ]; then
        echo "Logs for Run with ID '${RUN_ID}' are already downloaded. Skipping download."
    else
        echo "Downloading logs for Run with ID '${RUN_ID}'..."
        gh api \
        -H "Accept: application/vnd.github+json" \
        "/repos/${OWNER}/${REPO}/actions/runs/${RUN_ID}/logs" > "logs/$RUN_ID.zip"

        unzip "logs/$RUN_ID.zip" -d "logs/$RUN_ID" && rm "logs/$RUN_ID.zip"
        echo "Logs are downloaded."
    fi
done

echo "Analyze logs..."

IFS=$'\n' read -r -d '' -a FILES_TO_ANALYZE < <( find logs -type f -print0 | xargs -0 grep -l "Job is about to start running on the runner: ios-mac" && printf '\0' )
TOTAL_WAIT_DIFF=0
MAX_DIFF=0

echo "Found ${#FILES_TO_ANALYZE[@]} files to analyze."

for LOG_FILE in "${FILES_TO_ANALYZE[@]}"
do
    WAIT_START=$(grep -m 1 "Waiting for a runner to pick up this job..." "$LOG_FILE" | awk '{print $1}')
#    WAIT_END=$(grep "Job is about to start running on the runner" "$LOG_FILE" | awk '{print $1}')
    WAIT_END=$(grep -m 1 "Current runner version" "$LOG_FILE" | awk '{print $1}')

    WAIT_START_TIMESTAMP=$(gdate -d "$WAIT_START" +%s%3N) # in milliseconds
    WAIT_END_TIMESTAMP=$(gdate -d "$WAIT_END" +%s%3N) # in milliseconds
    WAIT_DIFF=$((WAIT_END_TIMESTAMP - WAIT_START_TIMESTAMP))
    TOTAL_WAIT_DIFF=$((TOTAL_WAIT_DIFF + WAIT_DIFF))
    if [ "$WAIT_DIFF" -gt "$MAX_DIFF" ]; then
        MAX_DIFF=$WAIT_DIFF
    fi
done

AVG_WAIT_DIFF=$((TOTAL_WAIT_DIFF / ${#FILES_TO_ANALYZE[@]}))

printf "Results:\n"
printf "AVG WAIT DIFF (s): %s.%s\n" $((AVG_WAIT_DIFF / 1000)) $((AVG_WAIT_DIFF % 1000))
printf "MAX WAIT DIFF (s): %s.%s\n" $((MAX_DIFF / 1000)) $((MAX_DIFF % 1000))