diff options
Diffstat (limited to '')
| -rw-r--r-- | pkg/docker/Dockerfile.tmpl | 4 | ||||
| -rwxr-xr-x | pkg/docker/docker-entrypoint.sh | 71 |
2 files changed, 75 insertions, 0 deletions
diff --git a/pkg/docker/Dockerfile.tmpl b/pkg/docker/Dockerfile.tmpl index 18d6d34e..c721931b 100644 --- a/pkg/docker/Dockerfile.tmpl +++ b/pkg/docker/Dockerfile.tmpl @@ -86,4 +86,8 @@ RUN ln -sf /dev/stdout /var/log/unit.log STOPSIGNAL SIGTERM +COPY docker-entrypoint.sh /usr/local/bin/ +RUN mkdir /docker-entrypoint.d/ +ENTRYPOINT ["/usr/local/bin/docker-entrypoint.sh"] + CMD ["unitd", "--no-daemon", "--control", "unix:/var/run/control.unit.sock"] diff --git a/pkg/docker/docker-entrypoint.sh b/pkg/docker/docker-entrypoint.sh new file mode 100755 index 00000000..4ad7cb9a --- /dev/null +++ b/pkg/docker/docker-entrypoint.sh @@ -0,0 +1,71 @@ +#!/usr/bin/env bash + +set -e + +curl_put() +{ + RET=`/usr/bin/curl -s -w '%{http_code}' -X PUT --data-binary @$1 --unix-socket /var/run/control.unit.sock http://localhost/$2` + RET_BODY=${RET::-3} + RET_STATUS=$(echo $RET | /usr/bin/tail -c 4) + if [ "$RET_STATUS" -ne "200" ]; then + echo "$0: Error: HTTP response status code is '$RET_STATUS'" + echo "$RET_BODY" + return 1 + else + echo "$0: OK: HTTP response status code is '$RET_STATUS'" + echo "$RET_BODY" + fi + return 0 +} + +if [ "$1" = "unitd" ]; then + if /usr/bin/find "/var/lib/unit/" -mindepth 1 -print -quit 2>/dev/null | /bin/grep -q .; then + echo "$0: /var/lib/unit/ is not empty, skipping initial configuration..." + else + if /usr/bin/find "/docker-entrypoint.d/" -mindepth 1 -print -quit 2>/dev/null | /bin/grep -q .; then + echo "$0: /docker-entrypoint.d/ is not empty, launching Unit daemon to perform initial configuration..." + /usr/sbin/unitd --control unix:/var/run/control.unit.sock + + while [ ! -S /var/run/control.unit.sock ]; do echo "$0: Waiting for control socket to be created..."; /bin/sleep 0.1; done + # even when the control socket exists, it does not mean unit has finished initialisation + # this curl call will get a reply once unit is fully launched + /usr/bin/curl -s -X GET --unix-socket /var/run/control.unit.sock http://localhost/ + + echo "$0: Looking for certificate bundles in /docker-entrypoint.d/..." + for f in $(/usr/bin/find /docker-entrypoint.d/ -type f -name "*.pem"); do + echo "$0: Uploading certificates bundle: $f" + curl_put $f "certificates/$(basename $f .pem)" + done + + echo "$0: Looking for configuration snippets in /docker-entrypoint.d/..." + for f in $(/usr/bin/find /docker-entrypoint.d/ -type f -name "*.json"); do + echo "$0: Applying configuration $f"; + curl_put $f "config" + done + + echo "$0: Looking for shell scripts in /docker-entrypoint.d/..." + for f in $(/usr/bin/find /docker-entrypoint.d/ -type f -name "*.sh"); do + echo "$0: Launching $f"; + "$f" + done + + # warn on filetypes we don't know what to do with + for f in $(/usr/bin/find /docker-entrypoint.d/ -type f -not -name "*.sh" -not -name "*.json" -not -name "*.pem"); do + echo "$0: Ignoring $f"; + done + + echo "$0: Stopping Unit daemon after initial configuration..." + kill -TERM `/bin/cat /var/run/unit.pid` + + while [ -S /var/run/control.unit.sock ]; do echo "$0: Waiting for control socket to be removed..."; /bin/sleep 0.1; done + + echo + echo "$0: Unit initial configuration complete; ready for start up..." + echo + else + echo "$0: /docker-entrypoint.d/ is empty, skipping initial configuration..." + fi + fi +fi + +exec "$@" |