Merge pull request #246 from jankatins/add-main-systemd-unit

Add systemd unit to enable both timer and changes based syncs

README.md

@@ -90,15 +90,18 @@ Prepare a Google Drive folder in your $HOME directory with `grive -a`.
 
 ```bash
 # 'google-drive' is the name of your Google Drive folder in your $HOME directory
-systemctl --user enable grive-timer@$(systemd-escape google-drive).timer
+systemctl --user enable grive@$(systemd-escape google-drive).service
-systemctl --user start grive-timer@$(systemd-escape google-drive).timer
+systemctl --user start grive@$(systemd-escape google-drive).service
-systemctl --user enable grive-changes@$(systemd-escape google-drive).service
-systemctl --user start grive-changes@$(systemd-escape google-drive).service
 ```
 
-You can enable and start these two units for multiple folders in your `$HOME`
+You can enable and start this unit for multiple folders in your `$HOME`
 directory if you need to sync with multiple google accounts.
 
+You can also only enable the time based syncing or the changes based syncing
+by only directly enabling and starting the corresponding unit:
+`grive-changes@$(systemd-escape google-drive).service` or 
+`grive-timer@$(systemd-escape google-drive).timer`.
+
 ### Shared files
 
 Files and folders which are shared with you don't automatically show up in

systemd/CMakeLists.txt

@@ -1,10 +1,11 @@
-SET(GRIVE_SYNC_SH_BINARY "${CMAKE_INSTALL_PREFIX}/lib/grive/grive-sync.sh")
+SET(GRIVE_SYNC_SH_BINARY "${CMAKE_INSTALL_FULL_LIBEXECDIR}/grive/grive-sync.sh")
 
 CONFIGURE_FILE(grive-changes@.service.in grive-changes@.service @ONLY)
 CONFIGURE_FILE(grive-timer@.service.in grive-timer@.service @ONLY)
 
 install(
   FILES
+    grive@.service
     ${CMAKE_BINARY_DIR}/systemd/grive-changes@.service
     ${CMAKE_BINARY_DIR}/systemd/grive-timer@.service
   DESTINATION
@@ -22,5 +23,5 @@ install(
   PROGRAMS
     grive-sync.sh
   DESTINATION
-    lib/grive
+    ${CMAKE_INSTALL_FULL_LIBDIR}/grive
-)
+)

systemd/grive-sync.sh

@@ -62,22 +62,24 @@ unlock()            { _lock u; }   # drop a lock
 
 sync_directory() {
 	_directory="${1}"
+
+	reset_timer_and_exit() { echo "Retriggered google drive sync ('${_directory}')" && touch -m $LOCKFILE && exit; }
+
+	exlock_now || reset_timer_and_exit
+
 	if ping -c1 -W1 -q accounts.google.com >/dev/null 2>&1; then
 	    true
 	    # pass
 	else
-	    echo "Google drive server not reachable..."
+	    echo "Google drive server not reachable, NOT syncing..."
+		unlock
 	    exit 0
 	fi
 
-	reset_timer_and_exit() { echo "Retriggered google drive sync" && touch -m "$LOCKFILE" && exit; }
-
-	exlock_now || reset_timer_and_exit
-
 	TIME_AT_START=0
 	TIME_AT_END=1
 	while [[ "${TIME_AT_START}" -lt "${TIME_AT_END}" ]]; do
-	    echo "Syncing "${_directory}"..." 
+	    echo "Syncing '${_directory}'..." 
 	    TIME_AT_START="$(stat -c %Y "$LOCKFILE")"
 	    # exclude symlinks from sync
 	    cat "${_directory}"/.griveignore 2>/dev/null | sed '/#LINKS-EDIT_BEFORE_THIS$/,$d' > /tmp/.griveignore.base
@@ -87,14 +89,15 @@ sync_directory() {
 	    ( cd "${_directory}" && find . -type l | sed 's/^.\///g'; ) >> "${_directory}"/.griveignore
 	    grive -p "${_directory}" 2>&1 | grep -v -E "^Reading local directories$|^Reading remote server file list$|^Synchronizing files$|^Finished!$"
 	    TIME_AT_END="$(stat -c %Y "$LOCKFILE")"
-	    echo "Sync of "${_directory}" done." 
+	    echo "Sync of '${_directory}' done." 
 	done
 
 	# always exit ok, so that we never go into a wrong systemd state
+	unlock
 	exit 0
 }
 
-### LISTEN TO DIRECTORY CHANGES ###
+### LISTEN TO CHANGES IN DIRECTORY ###
 
 
 listen_directory() {
@@ -102,7 +105,7 @@ listen_directory() {
 
 	type inotifywait >/dev/null 2>&1 || { echo >&2 "I require inotifywait but it's not installed. Aborting."; exit 1; }
 
-	echo "Listening for changes in ~/"${_directory}""
+	echo "Listening for changes in '${_directory}'"
 
 	while true #run indefinitely
 	do 

systemd/grive-timer@.service.in

@@ -1,5 +1,5 @@
 [Unit]
-Description=Google drive sync 
+Description=Google drive sync (executed by timer unit)
 After=network-online.target
 
 [Service]

systemd/grive@.service

@@ -0,0 +1,13 @@
+[Unit]
+Description=Google drive sync (main)
+Requires=grive-timer@%i.timer grive-changes@%i.service
+
+# dummy service
+[Service]
+Type=oneshot
+ExecStart=/bin/true
+# This service shall be considered active after start
+RemainAfterExit=yes
+
+[Install]
+WantedBy=default.target