@@ -0,0 +1,114 @@
#! /usr/bin/env bash
set -o xtrace -o errexit -o pipefail -o nounset
# #######################################################################################
# CircleCI's current recommendation for roughly serializing a subset
# of build commands for a given branch
#
# circle discussion thread - https://discuss.circleci.com/t/serializing-deployments/153
# Code from - https://github.com/bellkev/circle-lock-test
# #######################################################################################
# sets $branch, $job_name, $tag, $rest
parse_args () {
while [[ $# -gt 0 ]]; do
case $1 in
-b|--branch) branch=" $2 "
-j|--job-name) job_name=" $2 "
-t|--tag) tag=" $2 "
* ) break ;;
esac
shift 2
done
rest=(" $@ "
}
# reads $branch, $tag, $commit_message
should_skip () {
if [[ " $branch " && " $CIRCLE_BRANCH " != " $branch " ; then
echo " Not on branch $branch . Skipping..."
return 0
fi
if [[ " $job_name " && " $CIRCLE_JOB " != " $job_name " ; then
echo " Not running $job_name . Skipping..."
return 0
fi
if [[ " $tag " && " $commit_message " != * \[ $tag \] * ]]; then
echo " No [$tag ] commit tag found. Skipping..."
return 0
fi
return 1
}
# reads $branch, $job_name, $tag
# sets $jq_prog
make_jq_prog () {
local jq_filters=" "
if [[ $branch ]]; then
jq_filters+=" and .branch == \" $branch \" "
fi
if [[ $job_name ]]; then
jq_filters+=" and .workflows?.job_name? == \" $job_name \" "
fi
if [[ $tag ]]; then
jq_filters+=" and (.subject | contains(\" [$tag ]\" ))"
fi
jq_prog=" .[] | select(.build_num < $CIRCLE_BUILD_NUM and (.status | test(\" running|pending|queued\" )) $jq_filters ) | .build_num"
jq_later_builds_prog=" .[] | select(.build_num > $CIRCLE_BUILD_NUM and (.status | test(\" running|pending|queued\" )) $jq_filters ) | .build_num"
}
if [[ " $0 " != * bats* ]]; then
set -e
set -u
set -o pipefail
branch=" "
tag=" "
job_name=" "
rest=()
api_url=" https://circleci.com/api/v1/project/$CIRCLE_PROJECT_USERNAME /$CIRCLE_PROJECT_REPONAME ?circle-token=$CIRCLE_TOKEN &limit=100"
if [[ $branch ]]; then
api_url=" https://circleci.com/api/v1/project/$CIRCLE_PROJECT_USERNAME /$CIRCLE_PROJECT_REPONAME /tree/$branch ?circle-token=$CIRCLE_TOKEN &limit=100"
fi
parse_args " $@ "
commit_message=$( git log -1 --pretty=%B)
if should_skip; then exit 0; fi
make_jq_prog
echo " Checking for running builds..."
while true ; do
builds=$( curl -s -H " Accept: application/json" " $api_url " | jq " $jq_prog " )
later_builds=$( curl -s -H " Accept: application/json" " $api_url " | jq " $jq_later_builds_prog " )
if [[ $later_builds ]]; then
echo " Later builds detected, bailing"
echo " $later_builds "
exit 0
fi
if [[ $builds ]]; then
echo " Waiting on builds:"
echo " $builds "
else
break
fi
echo " Retrying in 10 seconds..."
sleep 10
done
echo " Acquired lock"
if [[ " ${# rest[@]} " -ne 0 ]]; then
" ${rest[@]} "
fi
fi
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