hgforest.sh revision 1045:b84fc0b1efc2
1#!/bin/sh 2# 3# Copyright (c) 2009, 2014, Oracle and/or its affiliates. All rights reserved. 4# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5# 6# This code is free software; you can redistribute it and/or modify it 7# under the terms of the GNU General Public License version 2 only, as 8# published by the Free Software Foundation. 9# 10# This code is distributed in the hope that it will be useful, but WITHOUT 11# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13# version 2 for more details (a copy is included in the LICENSE file that 14# accompanied this code). 15# 16# You should have received a copy of the GNU General Public License version 17# 2 along with this work; if not, write to the Free Software Foundation, 18# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19# 20# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21# or visit www.oracle.com if you need additional information or have any 22# questions. 23# 24 25# Shell script for a fast parallel forest/trees command 26 27usage() { 28 echo "usage: $0 [-h|--help] [-q|--quiet] [-v|--verbose] [-s|--sequential] [--] <command> [commands...]" > ${status_output} 29 echo "Environment variables which modify behaviour:" 30 echo " HGFOREST_QUIET : (boolean) If 'true' then standard output is redirected to /dev/null" 31 echo " HGFOREST_VERBOSE : (boolean) If 'true' then Mercurial asked to produce verbose output" 32 echo " HGFOREST_SEQUENTIAL : (boolean) If 'true' then repos are processed sequentially. Disables concurrency" 33 echo " HGFOREST_GLOBALOPTS : (string, must begin with space) Additional Mercurial global options" 34 echo " HGFOREST_REDIRECT : (file path) Redirect standard output to specified file" 35 echo " HGFOREST_FIFOS : (boolean) Default behaviour for FIFO detection. Does not override FIFOs disabled" 36 echo " HGFOREST_CONCURRENCY: (positive integer) Number of repos to process concurrently" 37 echo " HGFOREST_DEBUG : (boolean) If 'true' then temp files are retained" 38 exit 1 39} 40 41global_opts="${HGFOREST_GLOBALOPTS:-}" 42status_output="${HGFOREST_REDIRECT:-/dev/stdout}" 43qflag="${HGFOREST_QUIET:-false}" 44vflag="${HGFOREST_VERBOSE:-false}" 45sflag="${HGFOREST_SEQUENTIAL:-false}" 46while [ $# -gt 0 ] 47do 48 case $1 in 49 -h | --help ) 50 usage 51 ;; 52 53 -q | --quiet ) 54 qflag="true" 55 ;; 56 57 -v | --verbose ) 58 vflag="true" 59 ;; 60 61 -s | --sequential ) 62 sflag="true" 63 ;; 64 65 '--' ) # no more options 66 shift; break 67 ;; 68 69 -*) # bad option 70 usage 71 ;; 72 73 * ) # non option 74 break 75 ;; 76 esac 77 shift 78done 79 80# silence standard output? 81if [ ${qflag} = "true" ] ; then 82 global_opts="${global_opts} -q" 83 status_output="/dev/null" 84fi 85 86# verbose output? 87if [ ${vflag} = "true" ] ; then 88 global_opts="${global_opts} -v" 89fi 90 91# Make sure we have a command. 92if [ $# -lt 1 -o -z "${1:-}" ] ; then 93 echo "ERROR: No command to hg supplied!" 94 usage 95fi 96 97command="$1"; shift 98command_args="${@:-}" 99 100# Clean out the temporary directory that stores the pid files. 101tmp=/tmp/forest.$$ 102rm -f -r ${tmp} 103mkdir -p ${tmp} 104 105 106if [ "${HGFOREST_DEBUG:-false}" = "true" ] ; then 107 echo "DEBUG: temp files are in: ${tmp}" 108fi 109 110# Check if we can use fifos for monitoring sub-process completion. 111echo "1" > ${tmp}/read 112while_subshell=1 113while read line; do 114 while_subshell=0 115 break; 116done < ${tmp}/read 117rm ${tmp}/read 118 119on_windows=`uname -s | egrep -ic -e 'cygwin|msys'` 120 121if [ ${while_subshell} = "1" -o ${on_windows} = "1" ]; then 122 # cygwin has (2014-04-18) broken (single writer only) FIFOs 123 # msys has (2014-04-18) no FIFOs. 124 # older shells create a sub-shell for redirect to while 125 have_fifos="false" 126else 127 have_fifos="${HGFOREST_FIFOS:-true}" 128fi 129 130safe_interrupt () { 131 if [ -d ${tmp} ]; then 132 if [ "`ls ${tmp}/*.pid`" != "" ]; then 133 echo "Waiting for processes ( `cat ${tmp}/.*.pid ${tmp}/*.pid 2> /dev/null | tr '\n' ' '`) to terminate nicely!" > ${status_output} 134 sleep 1 135 # Pipe stderr to dev/null to silence kill, that complains when trying to kill 136 # a subprocess that has already exited. 137 kill -TERM `cat ${tmp}/*.pid | tr '\n' ' '` 2> /dev/null 138 wait 139 echo "Interrupt complete!" > ${status_output} 140 fi 141 rm -f -r ${tmp} 142 fi 143 exit 130 144} 145 146nice_exit () { 147 if [ -d ${tmp} ]; then 148 if [ "`ls -A ${tmp} 2> /dev/null`" != "" ]; then 149 wait 150 fi 151 if [ "${HGFOREST_DEBUG:-false}" != "true" ] ; then 152 rm -f -r ${tmp} 153 fi 154 fi 155} 156 157trap 'safe_interrupt' INT QUIT 158trap 'nice_exit' EXIT 159 160subrepos="corba jaxp jaxws langtools jdk hotspot nashorn" 161subrepos_extra="closed jdk/src/closed jdk/make/closed jdk/test/closed hotspot/make/closed hotspot/src/closed hotspot/test/closed deploy install sponsors pubs" 162 163# Only look in specific locations for possible forests (avoids long searches) 164pull_default="" 165repos="" 166repos_extra="" 167if [ "${command}" = "clone" -o "${command}" = "fclone" -o "${command}" = "tclone" ] ; then 168 # we must be a clone 169 if [ ! -f .hg/hgrc ] ; then 170 echo "ERROR: Need initial repository to use this script" > ${status_output} 171 exit 1 172 fi 173 174 # the clone must know where it came from (have a default pull path). 175 pull_default=`hg paths default` 176 if [ "${pull_default}" = "" ] ; then 177 echo "ERROR: Need initial clone with 'hg paths default' defined" > ${status_output} 178 exit 1 179 fi 180 181 # determine which sub repos need to be cloned. 182 for i in ${subrepos} ; do 183 if [ ! -f ${i}/.hg/hgrc ] ; then 184 repos="${repos} ${i}" 185 fi 186 done 187 188 pull_default_tail=`echo ${pull_default} | sed -e 's@^.*://[^/]*/\(.*\)@\1@'` 189 190 if [ -n "${command_args}" ] ; then 191 # if there is an "extra sources" path then reparent "extra" repos to that path 192 if [ "x${pull_default}" = "x${pull_default_tail}" ] ; then 193 echo "ERROR: Need initial clone from non-local source" > ${status_output} 194 exit 1 195 fi 196 pull_extra="${command_args}/${pull_default_tail}" 197 198 # determine which extra subrepos need to be cloned. 199 for i in ${subrepos_extra} ; do 200 if [ ! -f ${i}/.hg/hgrc ] ; then 201 repos_extra="${repos_extra} ${i}" 202 fi 203 done 204 else 205 if [ "x${pull_default}" = "x${pull_default_tail}" ] ; then 206 # local source repo. Clone the "extra" subrepos that exist there. 207 for i in ${subrepos_extra} ; do 208 if [ -f ${pull_default}/${i}/.hg/hgrc -a ! -f ${i}/.hg/hgrc ] ; then 209 # sub-repo there in source but not here 210 repos_extra="${repos_extra} ${i}" 211 fi 212 done 213 fi 214 fi 215 216 # Any repos to deal with? 217 if [ "${repos}" = "" -a "${repos_extra}" = "" ] ; then 218 echo "No repositories to process." > ${status_output} 219 exit 220 fi 221 222 # Repos to process concurrently. Clone does better with low concurrency. 223 at_a_time="${HGFOREST_CONCURRENCY:-2}" 224else 225 # Process command for all of the present repos 226 for i in . ${subrepos} ${subrepos_extra} ; do 227 if [ -d ${i}/.hg ] ; then 228 repos="${repos} ${i}" 229 fi 230 done 231 232 # Any repos to deal with? 233 if [ "${repos}" = "" ] ; then 234 echo "No repositories to process." > ${status_output} 235 exit 236 fi 237 238 # any of the repos locked? 239 locked="" 240 for i in ${repos} ; do 241 if [ -h ${i}/.hg/store/lock -o -f ${i}/.hg/store/lock ] ; then 242 locked="${i} ${locked}" 243 fi 244 done 245 if [ "${locked}" != "" ] ; then 246 echo "ERROR: These repositories are locked: ${locked}" > ${status_output} 247 exit 1 248 fi 249 250 # Repos to process concurrently. 251 at_a_time="${HGFOREST_CONCURRENCY:-8}" 252fi 253 254# Echo out what repositories we do a command on. 255echo "# Repositories: ${repos} ${repos_extra}" > ${status_output} 256 257if [ "${command}" = "serve" ] ; then 258 # "serve" is run for all the repos as one command. 259 ( 260 ( 261 cwd=`pwd` 262 serving=`basename ${cwd}` 263 ( 264 echo "[web]" 265 echo "description = ${serving}" 266 echo "allow_push = *" 267 echo "push_ssl = False" 268 269 echo "[paths]" 270 for i in ${repos} ; do 271 if [ "${i}" != "." ] ; then 272 echo "/${serving}/${i} = ${i}" 273 else 274 echo "/${serving} = ${cwd}" 275 fi 276 done 277 ) > ${tmp}/serve.web-conf 278 279 echo "serving root repo ${serving}" > ${status_output} 280 281 echo "hg${global_opts} serve" > ${status_output} 282 (PYTHONUNBUFFERED=true hg${global_opts} serve -A ${status_output} -E ${status_output} --pid-file ${tmp}/serve.pid --web-conf ${tmp}/serve.web-conf; echo "$?" > ${tmp}/serve.pid.rc ) 2>&1 & 283 ) 2>&1 | sed -e "s@^@serve: @" > ${status_output} 284 ) & 285else 286 # Run the supplied command on all repos in parallel. 287 288 # n is the number of subprocess started or which might still be running. 289 n=0 290 if [ ${have_fifos} = "true" ]; then 291 # if we have fifos use them to detect command completion. 292 mkfifo ${tmp}/fifo 293 exec 3<>${tmp}/fifo 294 fi 295 296 # iterate over all of the subrepos. 297 for i in ${repos} ${repos_extra} ; do 298 n=`expr ${n} '+' 1` 299 repopidfile=`echo ${i} | sed -e 's@./@@' -e 's@/@_@g'` 300 reponame=`echo ${i} | sed -e :a -e 's/^.\{1,20\}$/ &/;ta'` 301 pull_base="${pull_default}" 302 303 # regular repo or "extra" repo? 304 for j in ${repos_extra} ; do 305 if [ "${i}" = "${j}" ] ; then 306 # it's an "extra" 307 pull_base="${pull_extra}" 308 fi 309 done 310 311 # remove trailing slash 312 pull_base="`echo ${pull_base} | sed -e 's@[/]*$@@'`" 313 314 # execute the command on the subrepo 315 ( 316 ( 317 if [ "${command}" = "clone" -o "${command}" = "fclone" -o "${command}" = "tclone" ] ; then 318 # some form of clone 319 clone_newrepo="${pull_base}/${i}" 320 parent_path="`dirname ${i}`" 321 if [ "${parent_path}" != "." ] ; then 322 times=0 323 while [ ! -d "${parent_path}" ] ; do ## nested repo, ensure containing dir exists 324 if [ "${sflag}" = "true" ] ; then 325 # Missing parent is fatal during sequential operation. 326 echo "ERROR: Missing parent path: ${parent_path}" > ${status_output} 327 exit 1 328 fi 329 times=`expr ${times} '+' 1)` 330 if [ `expr ${times} '%' 10` -eq 0 ] ; then 331 echo "${parent_path} still not created, waiting..." > ${status_output} 332 fi 333 sleep 5 334 done 335 fi 336 # run the clone command. 337 echo "hg${global_opts} clone ${clone_newrepo} ${i}" > ${status_output} 338 (PYTHONUNBUFFERED=true hg${global_opts} clone ${clone_newrepo} ${i}; echo "$?" > ${tmp}/${repopidfile}.pid.rc ) 2>&1 & 339 else 340 # run the command. 341 echo "cd ${i} && hg${global_opts} ${command} ${command_args}" > ${status_output} 342 cd ${i} && (PYTHONUNBUFFERED=true hg${global_opts} ${command} ${command_args}; echo "$?" > ${tmp}/${repopidfile}.pid.rc ) 2>&1 & 343 fi 344 345 echo $! > ${tmp}/${repopidfile}.pid 346 ) 2>&1 | sed -e "s@^@${reponame}: @" > ${status_output} 347 # tell the fifo waiter that this subprocess is done. 348 if [ ${have_fifos} = "true" ]; then 349 echo "${i}" >&3 350 fi 351 ) & 352 353 if [ "${sflag}" = "true" ] ; then 354 # complete this task before starting another. 355 wait 356 else 357 if [ "${have_fifos}" = "true" ]; then 358 # check on count of running subprocesses and possibly wait for completion 359 if [ ${n} -ge ${at_a_time} ] ; then 360 # read will block until there are completed subprocesses 361 while read repo_done; do 362 n=`expr ${n} '-' 1` 363 if [ ${n} -lt ${at_a_time} ] ; then 364 # we should start more subprocesses 365 break; 366 fi 367 done <&3 368 fi 369 else 370 # Compare completions to starts 371 completed="`(ls -a1 ${tmp}/*.pid.rc 2> /dev/null | wc -l) || echo 0`" 372 while [ `expr ${n} '-' ${completed}` -ge ${at_a_time} ] ; do 373 # sleep a short time to give time for something to complete 374 sleep 1 375 completed="`(ls -a1 ${tmp}/*.pid.rc 2> /dev/null | wc -l) || echo 0`" 376 done 377 fi 378 fi 379 done 380fi 381 382# Wait for all subprocesses to complete 383wait 384 385# Terminate with exit 0 only if all subprocesses were successful 386ec=0 387if [ -d ${tmp} ]; then 388 rcfiles="`(ls -a ${tmp}/*.pid.rc 2> /dev/null) || echo ''`" 389 for rc in ${rcfiles} ; do 390 exit_code=`cat ${rc} | tr -d ' \n\r'` 391 if [ "${exit_code}" != "0" ] ; then 392 repo="`echo ${rc} | sed -e 's@^'${tmp}'@@' -e 's@/*\([^/]*\)\.pid\.rc$@\1@' -e 's@_@/@g'`" 393 echo "WARNING: ${repo} exited abnormally (${exit_code})" > ${status_output} 394 ec=1 395 fi 396 done 397fi 398exit ${ec} 399