Bash script to print each job's duration for a given CircleCI workflow

calculate.sh

# NOTE: This script requires:
# - curl
# - jq
# - your CircleCI API token (to be set via the $CIRCLE_TOKEN environment variable)

# Usage: sh ./calculate.sh <workflow ID>

get_job_numbers_in_workflow () { 
    echo "For Workflow ID ${1}:"
    curl -s -H "Circle-Token: $CIRCLE_TOKEN" \
      "https://circleci.com/api/v2/workflow/${1}/job" | jq '.items| map(select(.started_at != null)) | map({ p: .project_slug, j: .job_number|tostring}) | map(.|join("/job/"))' > "${1}.json"
}

print_duration_in_workflow () {
    ms=0;
    for path in $(jq -r ".[]" "${1}.json")
    do
      d=$(curl -s -H "Circle-Token: $CIRCLE_TOKEN" "https://circleci.com/api/v2/project/${path}" | jq -r ".duration")
      echo "\tjob ${path} took ${d} ms."
    done

    rm "${1}.json"
}

for w in "$@" 
do
    get_job_numbers_in_workflow $w
    print_duration_in_workflow $w
done