From 056328e1d40a73bef98c5a6c9001215e3b44127e Mon Sep 17 00:00:00 2001
From: Peter Wu <peter@lekensteyn.nl>
Date: Mon, 7 Jul 2014 16:21:19 +0200
Subject: sync-build.sh: remote compilation after editing

This script helps me in syncing sources with a remote build machine and
building changes once I have made a local change. It also syncs back
generated binaries.
---
 sync-build.sh | 109 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 109 insertions(+)
 create mode 100755 sync-build.sh

(limited to 'sync-build.sh')

diff --git a/sync-build.sh b/sync-build.sh
new file mode 100755
index 0000000..109e6a5
--- /dev/null
+++ b/sync-build.sh
@@ -0,0 +1,109 @@
+#!/bin/bash
+# Detect a local change, sync to build machine and retrieve result when done. A
+# notification is also send when the build is complete.
+#
+# Author: Peter Wu <peter@lekensteyn.nl>
+#
+# Recommendations:
+# - ssh-agent (add keys before with ssh-add)
+# - 2 GiB remote storage (builddir is 900 MiB, git tree is 486 MiB)
+# - Gigabit link between working machine and build machine
+# - Matching local + remote OS environments to avoid library mismatches.
+#   In my case I run schroot to enter a chroot with matching libs (see
+#   $remotecmd below).
+# - libnotify for notifications when ready.
+
+# LOCAL source dir (on non-volatile storage for reliability)
+localsrcdir=$HOME/projects/wireshark/
+
+# REMOTE
+# REMOTE host, is a ssh alias that can be defined in ~/.ssh/config, e.g.:
+# Host wireshark-builder
+#    User foo
+#    Hostname 10.42.0.1
+remotehost=wireshark-builder
+# Remote source dir, it can be volatile (tmpfs) since it is just a copy. On the
+# local side, it is recommended to create a symlink to the localsrcdir for
+# debugging purposes
+remotesrcdir=/tmp/wireshark/
+# Remote directory to generate objects, it must also be accessible locally for
+# easier debugging (rpath)
+builddir=/tmp/wsbuild/
+
+# LOCAL & REMOTE program dir (Available since 1.11.x and 1.12.0)
+rundir="$builddir/run/"
+
+# PATH is needed for /usr/bin/core_perl/pod2man (PCAP)
+remotecmd="schroot -c chroot:arch -- sh -c '
+PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/bin/core_perl;
+if [ ! -d $builddir ]; then
+    mkdir $builddir && cd $builddir &&
+    time cmake \
+        -DCMAKE_INSTALL_PREFIX=/tmp/wsroot \
+        -DENABLE_GTK3=0 \
+        -DENABLE_PORTAUDIO=0 \
+        -DENABLE_QT5=0 \
+        -DENABLE_GEOIP=0 \
+        -DENABLE_KERBEROS=0 \
+        -DENABLE_SMI=0 \
+        -DCMAKE_BUILD_TYPE=Debug \
+        $remotesrcdir \
+        -DCMAKE_C_FLAGS=-fsanitize=address \
+        -DCMAKE_CXX_FLAGS=-fsanitize=address \
+        -DCMAKE_EXPORT_COMPILE_COMMANDS=1
+fi &&
+time make -C $builddir -j16
+'"
+
+
+# Touch this file to trigger a build.
+sync=$(mktemp --tmpdir 'sync-build-XXXXXXXX')
+monpid=
+cleanup() {
+    rm -f "$sync"
+    [ -z "$monpid" ] || kill $monpid
+}
+trap cleanup EXIT
+
+round=0
+monitor_changes() {
+    # Wait for changes, but ignore .git/ and vim swap files
+    # NOTE: you cannot add multiple --exclude options, they must be combined
+    inotifywait -r -m -e close_write \
+        --exclude='/\.[^/]+\.swp?.$|~$|\/.git/' \
+        "$localsrcdir/" |
+    while read x; do
+        printf '\e[36m%s\e[m\n' "Trigger $((++round)): $x" >&2
+        touch "$sync"
+    done
+}
+
+
+### MAIN ###
+
+# For gdb
+if [ ! -e "$remotesrcdir" ]; then
+    ln -sv "$localsrcdir" "$remotesrcdir"
+fi
+
+monitor_changes & monpid=$!
+
+echo Waiting...
+while inotifywait -qq -e close_write "$sync"; do
+    echo Woke up...
+    # Wait for a second in case I save something and want to do a ninja edit.
+    sleep 1
+
+    rsync -av --delete --exclude='.*.sw?' \
+        "$localsrcdir/" "$remotehost:$remotesrcdir/" &&
+    ssh -t "$remotehost" "$remotecmd"
+    retval=$?
+    if [ $retval -ne 0 ]; then
+        notify-send -- "$(tty) - $(date -R)" "Build broke with $retval"
+        sleep 3
+    else
+        rsync -av --delete --exclude='.*.sw?' "$remotehost:$rundir" "$rundir"
+        notify-send -- "$(tty) - $(date -R)" "READY"
+    fi
+    echo Another satisfied customer. NEXT
+done
-- 
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