new: [opensem] add charm

opensem/hooks/log_rotate-relation-joined

@@ -0,0 +1,86 @@
+#!/bin/bash
+
+## Should be executable N time in a row with same result.
+
+. lib/common
+
+set -e
+
+LOGS=/var/log/opensem
+
+php_fpm_service=$(service:traverse "$SERVICE_NAME":php-fpm) || {
+    err "Could not find php-fpm service for $SERVICE_NAME"
+    exit 1
+}
+
+uid_gid=$(get_service_base_image_dir_uid_gid "$php_fpm_service" /var/www/html) || {
+    err "Could not determine uid:gid for $php_fpm_service of dir /var/www/html"
+    exit 1
+}
+
+gid="${uid_gid#* }"
+
+dirs=(
+    "$LOGS"
+)
+
+to_create=()
+volumes=""
+for d in "${dirs[@]}"; do
+    fdir="${SERVICE_DATASTORE}$d"
+    if [ -d "$fdir" ]; then
+        find "$fdir" \! -gid "$gid" -print0 | while read-0 f; do
+            chgrp -v "$gid" "$f" || return 1
+        done
+        find "$fdir" \! -perm -g+rwx -print0 | while read-0 f; do
+            chmod -v g+rwx "$f" || return 1
+        done
+    else
+        to_create+=("$fdir")
+    fi
+done
+
+if [ "${#to_create[@]}" -gt 0 ]; then
+    mkdir -p "${to_create[@]}" || return 1
+    chgrp -v "${gid}" "${to_create[@]}" || return 1
+    chmod g+rwx "${to_create[@]}" || return 1
+fi
+
+
+rotated_count=$(relation-get rotated-count 2>/dev/null) || true
+rotated_count=${rotated_count:-52}
+
+## XXXvlab: a lot of this intelligence should be moved away into ``logrotate`` charm
+DST="$CONFIGSTORE/$TARGET_SERVICE_NAME/etc/logrotate.d/$SERVICE_NAME"
+file_put "$DST" <<EOF
+/var/log/docker/$SERVICE_NAME/laravel.log {
+    weekly
+    missingok
+    dateext
+    dateyesterday
+    dateformat _%Y-%m-%d
+    extension .log
+    rotate $rotated_count
+    compress
+    delaycompress
+    notifempty
+    create 640 root root
+    sharedscripts
+}
+EOF
+
+opensem:config-set "LOG_CHANNEL" "single" || {
+    err "Could not set LOG_CHANNEL=single in opensem config"
+    exit 1
+}
+
+config-add "\
+services:
+  $MASTER_TARGET_SERVICE_NAME:
+    volumes:
+      - $DST:/etc/logrotate.d/docker-${SERVICE_NAME}:ro
+      - $SERVICE_DATASTORE$LOGS:/var/log/docker/$SERVICE_NAME:rw
+  $php_fpm_service:
+    volumes:
+      - $SERVICE_DATASTORE$LOGS:/opt/apps/$SERVICE_NAME/storage/logs:rw
+"