3 #########################################################################
4 # This program is free software: you can redistribute it and/or modify #
5 # it under the terms of the version 3 of the GNU General Public License #
6 # as published by the Free Software Foundation. #
8 # This program is distributed in the hope that it will be useful, but #
9 # WITHOUT ANY WARRANTY; without even the implied warranty of #
10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU #
11 # General Public License for more details. #
13 # You should have received a copy of the GNU General Public License #
14 # along with this program. If not, see <http://www.gnu.org/licenses/>. #
16 # Written by and Copyright (C) Francois Fleuret #
17 # Contact <francois@fleuret.org> for comments & bug reports #
18 #########################################################################
23 ######################################################################
25 function check_remote_is_defined () {
26 if [[ "${REMOTE_HOST}" ]] && [[ "${REMOTE_DIR}" ]]
30 echo "@XREMOTE_HOST should come first." >&2
39 This script takes a script as argument and executes it remotely in a
40 temporary directory on a ssh-accessible server.
42 It parses the script first to find embedded arguments which defines
43 the hostname on which to run it, the files to send, the files to
44 get back when the execution is done, and commands to execute before
45 running the executable remotely.
47 These arguments can appear multiple times, except the one that
48 specifies the remote host.
52 @XREMOTE_HOST: elk.fleuret.org
53 @XREMOTE_EXEC: python3
54 @XREMOTE_SEND: main.cf
56 @XREMOTE_PRE: ln -s /home/fleuret/data/pytorch ./data
58 If no argument is provided to @XREMOTE_HOST, the environment
59 variable $XREMOTE_HOST is used instead
61 Contact <francois@fleuret.org> for comments.
67 function cleanup_remote_tmp () {
68 if [[ "${REMOTE_HOST}" ]] && [[ "${REMOTE_DIR}" ]]
70 echo "xremote: Clean up remote workdir."
71 ssh "${REMOTE_HOST}" "rm -rf \"${REMOTE_DIR}\""
75 ######################################################################
77 [[ -x "$1" ]] || (help && exit 1)
79 main="$(basename "$1")"
83 trap cleanup_remote_tmp EXIT
85 ######################################################################
90 if [[ "${line}" =~ '@XREMOTE' ]]
93 label=$(echo "${line}" | sed -e 's/^.*@XREMOTE_\([^:]*\):.*$/\1/')
94 value=$(echo "${line}" | sed -e 's/^.*@XREMOTE_[^:]*: *\(.*\)$/\1/')
99 check_remote_is_defined
100 REMOTE_EXEC="${value}"
104 check_remote_is_defined
105 ssh < /dev/null "${REMOTE_HOST}" "cd \"${REMOTE_DIR}\" && ${value}"
109 check_remote_is_defined
110 tar c ${value} | ssh "${REMOTE_HOST}" "cd \"${REMOTE_DIR}\" && tar mx"
114 [[ "${REMOTE_DIR}" ]] && (exit "Remote host already defined!" >&2 && exit 1)
115 REMOTE_HOST="${value}"
116 [[ "${REMOTE_HOST}" ]] || REMOTE_HOST="${XREMOTE_HOST}"
117 [[ "${REMOTE_HOST}" ]] || (echo "xremote: No remote host specified." >&2 && exit 1)
118 REMOTE_DIR="$(ssh </dev/null "${REMOTE_HOST}" mktemp -d /tmp/xremote.from_"$(hostname)_$(date +%Y%m%d-%H%M%S)".XXXXXX)"
125 ######################################################################
127 check_remote_is_defined
129 tar c "${main}" | ssh "${REMOTE_HOST}" "cd \"${REMOTE_DIR}\" && tar mx"
131 echo "xremote: on ${REMOTE_HOST}"
133 if [[ "${REMOTE_EXEC}" ]]
135 REMOTE_COMMAND="${REMOTE_EXEC} ${main}"
137 REMOTE_COMMAND="./${main}"
140 echo "xremote: -- stdout ---------------------------------------------------"
141 ssh </dev/null "${REMOTE_HOST}" "cd \"${REMOTE_DIR}\" && ${REMOTE_COMMAND}"
143 ######################################################################
145 # Disable globbing to keep wildcards for the remote side
147 echo "xremote: -- retrieve results -----------------------------------------"
153 if [[ "${line}" =~ '@XREMOTE' ]]
155 label=$(echo "${line}" | sed -e 's/^.*@XREMOTE_\([^:]*\):.*$/\1/')
156 value=$(echo "${line}" | sed -e 's/^.*@XREMOTE_[^:]*: *\(.*\)$/\1/')
159 check_remote_is_defined
160 ssh </dev/null "${REMOTE_HOST}" "cd \"${REMOTE_DIR}\" && tar 2>/dev/null c ${value}" | tar mxv
168 echo "xremote: -- finished -------------------------------------------------"
170 ######################################################################