From cc61abbeccd16df74f95352160360282dd0b271b Mon Sep 17 00:00:00 2001
From: Jimmy Monin <jimmy@monin.net>
Date: Sun, 12 Mar 2017 12:40:26 +0100
Subject: [PATCH] Refactoring and cleaning, levels 4 & 5 validation

---
 check_process                      |  6 ++-
 conf/influxdb-grafana-deps.control | 12 -----
 manifest.json                      |  1 +
 scripts/_common.sh                 | 82 ++++++++++++++++++++++++++++++
 scripts/install                    | 44 ++--------------
 scripts/remove                     |  8 ++-
 scripts/restore                    | 34 ++-----------
 scripts/upgrade                    |  2 +-
 8 files changed, 101 insertions(+), 88 deletions(-)
 delete mode 100644 conf/influxdb-grafana-deps.control

diff --git a/check_process b/check_process
index a6ef101..05e8dc1 100644
--- a/check_process
+++ b/check_process
@@ -26,8 +26,10 @@
 	Level 1=auto
 	Level 2=auto
 	Level 3=auto
-	Level 4=0
-  Level 5=0
+# https://github.com/YunoHost-Apps/grafana_ynh/issues/4
+	Level 4=1
+# https://github.com/YunoHost-Apps/grafana_ynh/issues/5
+  Level 5=1
 	Level 6=auto
 	Level 7=auto
 	Level 8=0
diff --git a/conf/influxdb-grafana-deps.control b/conf/influxdb-grafana-deps.control
deleted file mode 100644
index da708a6..0000000
--- a/conf/influxdb-grafana-deps.control
+++ /dev/null
@@ -1,12 +0,0 @@
-Section: misc
-Priority: optional
-Homepage: http://grafana.org/
-Standards-Version: 3.9.2
-
-Package: influxdb-grafana-deps
-Version: 4.1.1-1
-Depends: influxdb, grafana
-Architecture: all
-Description: meta package for InfluxDB/Grafana dependencies
- .
- This meta-package is only responsible of installing dependencies.
diff --git a/manifest.json b/manifest.json
index c03762d..b402678 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,6 +6,7 @@
         "en": "Beautiful metric & analytic dashboards for monitoring",
         "fr": "Tableaux de bords de supervision"
     },
+    "version": "1.0.0",
     "license": "Apache-2.0",
     "url": "http://grafana.org/",
     "maintainer": {
diff --git a/scripts/_common.sh b/scripts/_common.sh
index fe51eea..a7f8ad0 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -20,4 +20,86 @@ fix_path() {
          path="${path:0:${#path}-1}"
   fi
   echo "$path"
+}
+# Install needed repositories and install dependencies
+# usage: install_dependencies
+install_dependencies() {
+  # Install needed dependency for HTTPS apt access
+  # (that dependency could be handled upstream in YunoHost)
+  ynh_package_install apt-transport-https
+
+  # Test repositories existence, in case of failed installation
+  influxdb_repository_present=""
+  grafana_repository_present=""
+  [[ -f $INFLUXDB_REPOSITORY ]] && influxdb_repository_present="true"
+  [[ -f $GRAFANA_REPOSITORY ]] && grafana_repository_present="true"
+
+  # Install needed apt repository for InfluxDB
+  curl -sL https://repos.influxdata.com/influxdb.key | sudo apt-key add -
+  source /etc/os-release
+  test $VERSION_ID = "8" && echo "deb https://repos.influxdata.com/debian jessie stable" | sudo tee $INFLUXDB_REPOSITORY
+
+  # Install needed apt repository for Grafana
+  machine=$(uname -m)
+  # Add the repos depending on processor architecture
+   if [[ "$machine" =~ "x86" ]]; then 
+    # x86 processor --> we use the official repository
+    curl -s https://packagecloud.io/install/repositories/grafana/stable/script.deb.sh | sudo bash
+  elif [[ "$machine" =~ "armv6" ]] ; then
+    # For ARM, use fg2it repository
+    # https://github.com/fg2it/grafana-on-raspberry
+    curl https://bintray.com/user/downloadSubjectPublicKey?username=bintray | sudo apt-key add -
+    echo "deb http://dl.bintray.com/fg2it/deb-rpi-1b jessie main" | sudo tee $GRAFANA_REPOSITORY
+  elif [[ "$machine" =~ "armv7" ]] ; then
+    curl https://bintray.com/user/downloadSubjectPublicKey?username=bintray | sudo apt-key add -
+    echo "deb http://dl.bintray.com/fg2it/deb jessie main" | sudo tee $GRAFANA_REPOSITORY
+  fi
+
+  # Install packages
+  # We install them as dependencies as they may already be installed and used for other purposes
+  ynh_app_dependencies influxdb, grafana \
+  || {
+    # Remove apt repositories if they were added
+    [[ -n "$influxdb_repository_present" ]] && sudo rm $INFLUXDB_REPOSITORY
+    [[ -n "$grafana_repository_present" ]] && sudo rm $GRAFANA_REPOSITORY
+    ynh_die "Unable to install Debian packages"
+  }
+}
+
+
+# ======== Future YunoHost helpers ========
+# Install dependencies with a equivs control file
+#
+# usage: ynh_app_dependencies dep [dep [...]]
+# | arg: dep - the package name to install in dependence
+ynh_app_dependencies () {
+    dependencies=$@
+    manifest_path="../manifest.json"
+    if [ ! -e "$manifest_path" ]; then
+    	manifest_path="../settings/manifest.json"	# Into the restore script, the manifest is not at the same place
+    fi
+    version=$(sudo python3 -c "import sys, json;print(json.load(open(\"$manifest_path\"))['version'])")	# Retrieve the version number in the manifest file.
+    dep_app=${app//_/-}	# Replace all '_' by '-'
+    cat > ./${dep_app}-ynh-deps.control << EOF	# Make a control file for equivs-build
+Section: misc
+Priority: optional
+Package: ${dep_app}-ynh-deps
+Version: ${version}
+Depends: ${dependencies// /, }
+Architecture: all
+Description: Fake package for ${app} (YunoHost app) dependencies
+ This meta-package is only responsible of installing its dependencies.
+EOF
+    ynh_package_install_from_equivs ./${dep_app}-ynh-deps.control \
+        || ynh_die "Unable to install dependencies"	# Install the fake package and its dependencies
+}
+
+# Remove fake package and its dependencies
+#
+# Dependencies will removed only if no other package need them.
+#
+# usage: ynh_remove_app_dependencies
+ynh_remove_app_dependencies () {
+    dep_app=${app//_/-}	# Replace all '_' by '-'
+    ynh_package_autoremove ${dep_app}-ynh-deps	# Remove the fake package and its dependencies if they not still used.
 }
\ No newline at end of file
diff --git a/scripts/install b/scripts/install
index 49a1e01..aaa569d 100644
--- a/scripts/install
+++ b/scripts/install
@@ -30,46 +30,9 @@ sudo yunohost app checkurl "${domain}${path}" -a "$app" \
 ynh_app_setting_set "$app" admin "$admin"
 ynh_app_setting_set "$app" is_public "$is_public"
 
-# Install needed dependency for HTTPS apt access
-# (that dependency could be handled upstream in YunoHost)
-ynh_package_install apt-transport-https
+# Install dependencies
+install_dependencies
 
-# Test repository existence, in case of failed installation
-influxdb_repository_present=""
-grafana_repository_present=""
-[[ -f $INFLUXDB_REPOSITORY ]] && influxdb_repository_present="true"
-[[ -f $GRAFANA_REPOSITORY ]] && grafana_repository_present="true"
-
-# Install needed apt repository for InfluxDB
-curl -sL https://repos.influxdata.com/influxdb.key | sudo apt-key add -
-source /etc/os-release
-test $VERSION_ID = "8" && echo "deb https://repos.influxdata.com/debian jessie stable" | sudo tee $INFLUXDB_REPOSITORY
-
-# Install needed apt repository for Grafana
-machine=$(uname -m)
-# Add the repos depending on processor architecture
- if [[ "$machine" =~ "x86" ]]; then 
-  # x86 processor --> we use the official repository
-  curl -s https://packagecloud.io/install/repositories/grafana/stable/script.deb.sh | sudo bash
-elif [[ "$machine" =~ "armv6" ]] ; then
-  # For ARM, use fg2it repository
-  # https://github.com/fg2it/grafana-on-raspberry
-  curl https://bintray.com/user/downloadSubjectPublicKey?username=bintray | sudo apt-key add -
-  echo "deb http://dl.bintray.com/fg2it/deb-rpi-1b jessie main" | sudo tee $GRAFANA_REPOSITORY
-elif [[ "$machine" =~ "armv7" ]] ; then
-  curl https://bintray.com/user/downloadSubjectPublicKey?username=bintray | sudo apt-key add -
-  echo "deb http://dl.bintray.com/fg2it/deb jessie main" | sudo tee $GRAFANA_REPOSITORY
-fi
-
-# Install packages
-# We install them as dependencies as they may already be installed and used for other purposes
-ynh_package_install_from_equivs ../conf/influxdb-grafana-deps.control \
-|| {
-  # Remove apt repositories if they were added
-  [[ -n "$influxdb_repository_present" ]] && rm $INFLUXDB_REPOSITORY
-  [[ -n "$grafana_repository_present" ]] && rm $GRAFANA_REPOSITORY
-  ynh_die "Unable to install Debian packages"
-}
 # If NetData is installed, configure it to feed InfluxDB
 netdata_conf="/opt/netdata/etc/netdata/netdata.conf"
 if [[ -f "$netdata_conf" ]] ; then
@@ -166,7 +129,6 @@ sudo systemctl enable grafana-server.service
 
 # Store useful files for backup/restore scripts
 sudo cp _common.sh /etc/grafana
-sudo cp ../conf/influxdb-grafana-deps.control /etc/grafana
 
 # Modify Nginx configuration file and copy it to Nginx conf directory
 if [[ "$path" == "/" ]] ; then
@@ -185,4 +147,4 @@ if [[ $is_public -eq 1 ]]; then
 fi
 
 # Reload services
-sudo service nginx reload
+sudo systemctl reload nginx
diff --git a/scripts/remove b/scripts/remove
index 2d2f35d..d7e69a4 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -6,6 +6,9 @@ set -u
 # See comments in install script
 app=$YNH_APP_INSTANCE_NAME
 
+# Source local helpers
+source ./_common.sh
+
 # Source YunoHost helpers
 source /usr/share/yunohost/helpers
 
@@ -17,7 +20,10 @@ sudo systemctl stop grafana-server
 sudo systemctl stop influxdb
 
 # Remove app dependencies
+ynh_remove_app_dependencies || true
+# We keep this second removal for backward compatibility
 ynh_package_autoremove "influxdb-grafana-deps" || true
+
 # If packages deinstalled (weren't installed priorly to package installation)
 # purge remaining files
 if [[ -n "$(dpkg-query --status grafana | grep -E "Status|deinstall")" ]] ; then
@@ -52,6 +58,6 @@ ynh_mysql_drop_user "$dbuser" || true
 
 
 # Reload nginx service
-sudo service nginx reload
+sudo systemctl reload nginx
 
 
diff --git a/scripts/restore b/scripts/restore
index da6739b..c9389b4 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -14,7 +14,6 @@ path=$(ynh_app_setting_get "$app" path)
 
 # Fix permissions
 sudo chmod a+rx ./conf_grafana/_common.sh
-sudo chmod a+r ./conf_grafana/influxdb-grafana-deps.control
 
 # Source local helpers
 source ./conf_grafana/_common.sh
@@ -27,35 +26,8 @@ path=$(fix_path $path)
 sudo yunohost app checkurl "${domain}${path}" -a "$app" \
     || ynh_die "Path not available: ${domain}${path}"
 
-# Install needed dependency for HTTPS apt access
-# (that dependency could be handled upstream in YunoHost)
-ynh_package_install apt-transport-https
-
-# Install needed apt repository for InfluxDB
-curl -sL https://repos.influxdata.com/influxdb.key | sudo apt-key add -
-source /etc/os-release
-test $VERSION_ID = "8" && echo "deb https://repos.influxdata.com/debian jessie stable" | sudo tee $INFLUXDB_REPOSITORY
-
-# Install needed apt repository for Grafana
-machine=$(uname -m)
-# Add the repos depending on processor architecture
- if [[ "$machine" =~ "x86" ]]; then 
-  # x86 processor --> we use the official repository
-  curl -s https://packagecloud.io/install/repositories/grafana/stable/script.deb.sh | sudo bash
-elif [[ "$machine" =~ "armv6" ]] ; then
-  # For ARM, use fg2it repository
-  # https://github.com/fg2it/grafana-on-raspberry
-  curl https://bintray.com/user/downloadSubjectPublicKey?username=bintray | sudo apt-key add -
-  echo "deb http://dl.bintray.com/fg2it/deb-rpi-1b jessie main" | sudo tee $GRAFANA_REPOSITORY
-elif [[ "$machine" =~ "armv7" ]] ; then
-  curl https://bintray.com/user/downloadSubjectPublicKey?username=bintray | sudo apt-key add -
-  echo "deb http://dl.bintray.com/fg2it/deb jessie main" | sudo tee $GRAFANA_REPOSITORY
-fi
-
-# Install packages
-# We install them as dependencies as they may already be installed and used for other purposes
-ynh_package_install_from_equivs ./conf_grafana/influxdb-grafana-deps.control \
-|| ynh_die "Unable to install Debian packages"
+# Install dependencies
+install_dependencies
 
 # Create and restore Grafana database
 dbname=$app
@@ -88,4 +60,4 @@ sudo systemctl restart netdata || true
 sudo cp -a $SRCPATH/nginx.conf "/etc/nginx/conf.d/${domain}.d/${app}.conf"
 
 # Restart webserver
-sudo service nginx reload
+sudo systemctl reload nginx
diff --git a/scripts/upgrade b/scripts/upgrade
index b4fd681..e59be3f 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -42,4 +42,4 @@ if [[ $is_public -eq 1 ]]; then
 fi
 
 # Reload nginx service
-sudo service nginx reload
\ No newline at end of file
+sudo systemctl reload nginx
\ No newline at end of file