druid/web-console/script/druid

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#!/bin/bash -x
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
set -eu
set -o pipefail
# Private methods:
function _log() {
local msg="$1"
echo "[$(date)] -- ${msg}"
}
function _error() {
local msg="$1"
1>&2 _log "ERROR: $msg"
exit 1
}
function _get_code_root() {
git rev-parse --show-toplevel
}
function _get_maven_property_value() {
local property="$1";
(
cd "$(_get_code_root)" \
&& mvn org.apache.maven.plugins:maven-help-plugin:3.2.0:evaluate -Dexpression="${property}" -q -DforceStdout \
| sed 's/%$//'
)
}
function _get_druid_version() {
_get_maven_property_value "project.version"
}
function _build_distribution() {
_log "Building druid distribution"
(
# Add HEAD as an allowed HTTP method since this is how we check when the Druid service is ready.
cd "$(_get_code_root)" \
&& mvn -Pdist,skip-static-checks,skip-tests -Dmaven.javadoc.skip=true -q -T1C install \
&& cd distribution/target \
&& tar xzf "apache-druid-$(_get_druid_version)-bin.tar.gz" \
&& echo -e "\n\ndruid.server.http.allowedHttpMethods=[\"HEAD\"]" >> apache-druid-$(_get_druid_version)/conf/druid/single-server/micro-quickstart/_common/common.runtime.properties
)
}
function _wait_for_200_response() {
local url="$1"
local delay="$2"
local tries="$3"
local counter=0
_log "Waiting for 200 response from ${url}"
until curl --output /dev/null --silent --head --fail "${url}"; do
if [ "${counter}" -eq "${tries}" ];then
_error "Max of ${tries} tries exceeded"
fi
printf '.'
counter=$((counter+1))
sleep "$delay"
done
_log "${url} is ready"
}
DRUID_PID_FILE=".druid.pid"
# Public methods:
function build() {
_log "Building druid"
_build_distribution
_log "Done building druid"
}
function start() {
_log "Starting druid"
if [ -f "${DRUID_PID_FILE}" ]; then
_error "${DRUID_PID_FILE} exists with pid '$(<${DRUID_PID_FILE})'. Either shutdown druid or delete this file."
fi
"$(_get_code_root)/distribution/target/apache-druid-$(_get_druid_version)/bin/start-micro-quickstart" > /dev/null &
local pid="$!"
echo "$pid" > "$DRUID_PID_FILE"
_log "Druid started with pid ${pid}"
_wait_for_200_response "http://localhost:8888/unified-console.html" 3 20
}
function stop() {
_log "Stopping druid"
if [ -f "${DRUID_PID_FILE}" ]; then
local pid
pid="$(<${DRUID_PID_FILE})"
kill "$pid"
rm "${DRUID_PID_FILE}"
_log "Stopped pid ${pid}"
else
_log "${DRUID_PID_FILE} file does not exist"
fi
}
# Execute public method (passed as script argument)
"$@"