trigger.sh

#!/bin/bash -e

CIRCLE_TOKEN=PRIVATE

API_ROOT=https://circleci.com/api/v1
_project=PRIVATE
_branch=circle-ci-test

URL=${API_ROOT}/project/${_project}/tree/${_branch}?circle-token=${CIRCLE_TOKEN}

echo ${CIRCLE_TOKEN}

function check_busy {
  set +e
  curl -sH'Accept: application/json' \
    ${API_ROOT}/recent-builds\?circle-token\=${CIRCLE_TOKEN} | \
    jq ".[]|.status" | \
    grep -q running
  CIRCLE_NOT_RUNNING=${?}
  set -e

  if [[ "${CIRCLE_NOT_RUNNING}" -eq 0 ]]; then
    echo "Circle is busy."
    exit 0
  fi
}

function trigger_build {
  echo "Triggering build."

  curl -s \
    --header "Accept: application/json" \
    --header "Content-Type: application/json" \
    --data "${post_data}" \
    --request POST ${URL} > /dev/null
}

function check_last_build {
  STATUS=$(curl -s \
    --header "Accept: application/json" \
    --header "Content-Type: application/json" \
    --request GET ${URL}\&filter=completed | jq -r ".[0].status")

  # Use tags
  echo "circle_ci_test.${STATUS}:1|c" | \
    nc -w 1 -u 127.0.0.1 8125

}

function main {
  check_busy
  trigger_build
  check_last_build
}

main