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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,155 @@ | ||
| #!/bin/bash | ||
| # | ||
| # java util functions. | ||
| # | ||
| ################################################################################ | ||
| # api functions: | ||
| # | ||
| # - java operation functions: | ||
| # - jvu::get_java_version | ||
| # - jvu::java_cmd | ||
| ################################################################################ | ||
| # | ||
| #_ source guard begin _# | ||
| [ -z "${__source_guard_ED79675F_4289_4394_A843_03D06DB48AFA:+has_value}" ] || return 0 | ||
| __source_guard_ED79675F_4289_4394_A843_03D06DB48AFA="$(dirname "$(readlink -f "${BASH_SOURCE[0]}")")" | ||
| readonly __source_guard_ED79675F_4289_4394_A843_03D06DB48AFA | ||
| #_ source guard end _# | ||
|
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| set -eEuo pipefail | ||
|
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| # shellcheck source=common_utils.sh | ||
| source "$__source_guard_ED79675F_4289_4394_A843_03D06DB48AFA/common_utils.sh" | ||
|
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| ################################################################################# | ||
| # java info functions | ||
| ################################################################################# | ||
|
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| # output the java version extracted from `java -version` | ||
| jvu::get_java_version() { | ||
| (($# <= 1)) || cu::die "${FUNCNAME[0]} requires at most 1 argument! But provided $#: $*" | ||
|
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| local java_home_path="${1:-$JAVA_HOME}" | ||
| "$java_home_path/bin/java" -version 2>&1 | awk -F\" '/ version "/{print $2}' | ||
| } | ||
|
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||
| ################################################################################# | ||
| # java operation functions | ||
| ################################################################################# | ||
|
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| jvu::_validate_java_home() { | ||
| _jvu_VALIDATE_JAVA_HOME_ERR_MSG= | ||
|
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| local -r java_home="$1" | ||
| if cu::is_blank_string "$java_home"; then | ||
| _jvu_VALIDATE_JAVA_HOME_ERR_MSG="java home($java_home) is BLANK" | ||
| return 1 | ||
| fi | ||
|
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| if [ ! -e "$java_home" ]; then | ||
| _jvu_VALIDATE_JAVA_HOME_ERR_MSG="java home($java_home) is NOT existed" | ||
| return 1 | ||
| fi | ||
| if [ ! -d "$java_home" ]; then | ||
| _jvu_VALIDATE_JAVA_HOME_ERR_MSG="java home($java_home) is NOT directory" | ||
| return 1 | ||
| fi | ||
|
|
||
| local java_path="$java_home/bin/java" | ||
| if [ ! -f "$java_path" ]; then | ||
| _jvu_VALIDATE_JAVA_HOME_ERR_MSG="\$java_home/bin/java($java_path) is NOT existed" | ||
| return 1 | ||
| fi | ||
| if [ ! -x "$java_path" ]; then | ||
| _jvu_VALIDATE_JAVA_HOME_ERR_MSG="\$java_home/bin/java($java_path) is NOT executable" | ||
| return 1 | ||
| fi | ||
| } | ||
|
|
||
| # switch JAVA_HOME to target | ||
| # | ||
| # available switch target: | ||
| # - version pattern, e.g. 11, 17 | ||
| # determinate JAVA_HOME by env var JAVAx_HOME | ||
| # - /path/to/java/home | ||
| # | ||
| # usage: | ||
| # jvu::switch_to_jdk 17 | ||
| # jvu::switch_to_jdk /path/to/java/home | ||
| # | ||
| jvu::switch_to_jdk() { | ||
| [ $# == 1 ] || cu::die "${FUNCNAME[0]} requires exact 1 argument! But provided $#: $*" | ||
|
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| local -r switch_target="$1" | ||
| cu::is_blank_string "$switch_target" && cu::die "switch target($switch_target) is BLANK!" | ||
|
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||
| # 1. first check env var JAVAx_HOME(e.g. JAVA11_HOME) | ||
| # | ||
| # aka. set by java version, e.g. | ||
| # jvu::switch_to_jdk 11 | ||
| if cu::is_number_string "$switch_target"; then | ||
| local jdk_home_var_name="JAVA${switch_target}_HOME" | ||
| # check env var JAVAx_HOME is defined or not | ||
| if [ -z "${!jdk_home_var_name+defined}" ]; then | ||
| cu::die "use \$$jdk_home_var_name as switch target, but \$$jdk_home_var_name is NOT defined!" >&2 | ||
| fi | ||
| local jdk_home="${!jdk_home_var_name:-}" | ||
| if ! jvu::_validate_java_home "$jdk_home"; then | ||
| cu::die "found \$$jdk_home_var_name($jdk_home) for switch target $switch_target, but $_jvu_VALIDATE_JAVA_HOME_ERR_MSG!" >&2 | ||
| fi | ||
|
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| export JAVA_HOME="$jdk_home" | ||
| return | ||
| fi | ||
|
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| # 2. then switch as a directory | ||
| # | ||
| # aka. set by path of java installation, e.g. | ||
| # jvu::switch_to_jdk /path/to/java/home | ||
| local jdk_home="$switch_target" | ||
| if ! jvu::_validate_java_home "$jdk_home"; then | ||
| cu:die "use $switch_target directory as switch target, but $_jvu_VALIDATE_JAVA_HOME_ERR_MSG!" >&2 | ||
| fi | ||
| export JAVA_HOME="$jdk_home" | ||
| } | ||
|
|
||
| # FIXME hard code memery settings | ||
| # shellcheck disable=SC2034 | ||
| readonly JVU_DEFAULT_JAVA_OPTS=( | ||
| -Xmx256m -Xms256m | ||
| -server -ea | ||
| -Duser.language=en -Duser.country=US | ||
| ) | ||
|
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| readonly JVU_JAVA_OPT_DEFAULT_DEBUG_PORT=5050 | ||
|
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| # set env variable ENABLE_JAVA_RUN_DEBUG to enable java debug mode | ||
| jvu::java_cmd() { | ||
| (($# > 0)) || cu::die "${FUNCNAME[0]} requires arguments! But no provided" | ||
|
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| local debug_opts="-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=${JVU_JAVA_OPT_DEBUG_PORT}" | ||
|
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| cu::log_then_run "$JAVA_HOME/bin/java" \ | ||
| "${JVU_JAVA_OPTS[@]}" \ | ||
| ${JVU_ENABLE_JAVA_RUN_VERBOSE_CLASS+-verbose:class} \ | ||
| ${JVU_ENABLE_JAVA_RUN_DEBUG+$debug_opts} \ | ||
| "$@" | ||
| } | ||
|
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| ################################################################################ | ||
| # auto run logic when source | ||
| ################################################################################ | ||
|
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| jvu::__auto_run_when_source() { | ||
| # set VAR if absent | ||
|
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| if [ -z "${JVU_JAVA_OPT_DEBUG_PORT:-}" ]; then | ||
| JVU_JAVA_OPT_DEBUG_PORT="$JVU_JAVA_OPT_DEFAULT_DEBUG_PORT" | ||
| fi | ||
|
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| if [ -z "${JVU_JAVA_OPTS[*]:-}" ]; then | ||
| JVU_JAVA_OPTS=("${JVU_DEFAULT_JAVA_OPTS[@]}") | ||
| fi | ||
| } | ||
|
|
||
| jvu::__auto_run_when_source |
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