spark/spark-2.3/bin/mvn-zinc

#!/usr/bin/env bash

#
# 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.
#

# Copyed from commit 48682f6bf663e54cb63b7e95a4520d34b6fa890b in Apache Spark

# Determine the current working directory
_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
# Preserve the calling directory
_CALLING_DIR="$(pwd)"
# Options used during compilation
_COMPILE_JVM_OPTS="-Xmx2g -XX:MaxPermSize=512M -XX:ReservedCodeCacheSize=512m"

# Installs any application tarball given a URL, the expected tarball name,
# and, optionally, a checkable binary path to determine if the binary has
# already been installed
## Arg1 - URL
## Arg2 - Tarball Name
## Arg3 - Checkable Binary
install_app() {
  local remote_tarball="$1/$2"
  local local_tarball="${_DIR}/$2"
  local binary="${_DIR}/$3"
  local curl_opts="--progress-bar -L"
  local wget_opts="--progress=bar:force ${wget_opts}"

  if [ -z "$3" -o ! -f "$binary" ]; then
    # check if we already have the tarball
    # check if we have curl installed
    # download application
    [ ! -f "${local_tarball}" ] && [ $(command -v curl) ] && \
      echo "exec: curl ${curl_opts} ${remote_tarball}" 1>&2 && \
      curl ${curl_opts} "${remote_tarball}" > "${local_tarball}"
    # if the file still doesn't exist, lets try `wget` and cross our fingers
    [ ! -f "${local_tarball}" ] && [ $(command -v wget) ] && \
      echo "exec: wget ${wget_opts} ${remote_tarball}" 1>&2 && \
      wget ${wget_opts} -O "${local_tarball}" "${remote_tarball}"
    # if both were unsuccessful, exit
    [ ! -f "${local_tarball}" ] && \
      echo -n "ERROR: Cannot download $2 with cURL or wget; " && \
      echo "please install manually and try again." && \
      exit 2
    cd "${_DIR}" && tar -xzf "$2"
    rm -rf "$local_tarball"
  fi
}

# Install zinc under the bin/ folder
install_zinc() {
  local zinc_path="zinc-0.3.9/bin/zinc"
  [ ! -f "${_DIR}/${zinc_path}" ] && ZINC_INSTALL_FLAG=1
  install_app \
    "http://downloads.typesafe.com/zinc/0.3.9" \
    "zinc-0.3.9.tgz" \
    "${zinc_path}"
  ZINC_BIN="${_DIR}/${zinc_path}"
}

# Setup healthy defaults for the Zinc port if none were provided from
# the environment
ZINC_PORT=${ZINC_PORT:-"3030"}

# Install Zinc for the bin/
install_zinc

# Reset the current working directory
cd "${_CALLING_DIR}"

# Now that zinc is ensured to be installed, check its status and, if its
# not running or just installed, start it
if [ ! -f "${ZINC_BIN}" ]; then
  exit -1
fi
if [ -n "${ZINC_INSTALL_FLAG}" -o -z "`"${ZINC_BIN}" -status -port ${ZINC_PORT}`" ]; then
  export ZINC_OPTS=${ZINC_OPTS:-"$_COMPILE_JVM_OPTS"}
  "${ZINC_BIN}" -shutdown -port ${ZINC_PORT}
  "${ZINC_BIN}" -start -port ${ZINC_PORT} &>/dev/null
fi

# Set any `mvn` options if not already present
export MAVEN_OPTS=${MAVEN_OPTS:-"$_COMPILE_JVM_OPTS"}

# Last, call the `mvn` command as usual
mvn -DzincPort=${ZINC_PORT} "$@"