From 215949badad551ab6f521320e64a95d678c5c154 Mon Sep 17 00:00:00 2001
From: Tom Wiesing <tkw01536@gmail.com>
Date: Wed, 30 Mar 2022 11:50:04 +0200
Subject: [PATCH] Add backup_instance.sh script

---
 distillery/backup_instance.sh | 108 ++++++++++++++++++++++++++++++++++
 1 file changed, 108 insertions(+)
 create mode 100644 distillery/backup_instance.sh

diff --git a/distillery/backup_instance.sh b/distillery/backup_instance.sh
new file mode 100644
index 0000000..17ed91c
--- /dev/null
+++ b/distillery/backup_instance.sh
@@ -0,0 +1,108 @@
+#!/bin/bash
+set -e
+
+# read the lib/shared.sh and read the slug argument. 
+DISABLE_LOG=1
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+cd "$DIR"
+source "$DIR/lib/lib.sh"
+unset DISABLE_LOG
+require_slug_argument
+
+# if the site doesn't exist, I can't open a shell. 
+if ! sql_bookkeep_exists "$SLUG"; then
+    log_error "=> Site '$SLUG' does not exist in bookeeping table. "
+    echo "I can't open a shell there. "
+    exit 1
+fi;
+
+# Read everything from the database
+read -r INSTANCE_BASE_DIR MYSQL_DATABASE MYSQL_USER GRAPHDB_REPO GRAPHDB_USER <<< "$(sql_bookkeep_load "${SLUG}" "filesystem_base,sql_database,sql_user,graphdb_repository,graphdb_user" | tail -n +2)"
+
+# prepare the backup
+log_info " => Preparing Backup Configuration"
+
+BACKUP_SLUG="$SLUG-$(date +%Y%m%dT%H%M%S)-$(randompw)"
+BACKUP_INSTANCE_DIR="$DEPLOY_BACKUP_INPROGRESS_DIR/$BACKUP_SLUG"
+
+BACKUP_LOG_FILE="$BACKUP_INSTANCE_DIR/backup.log"
+BACKUP_INFO_FILE="$BACKUP_INSTANCE_DIR/info.txt"
+BACKUP_SQL_FILE="$BACKUP_INSTANCE_DIR/$MYSQL_DATABASE.sql"
+BACKUP_NQ_FILE="$BACKUP_INSTANCE_DIR/$GRAPHDB_REPO.nq"
+BACKUP_FS_DIR="$BACKUP_INSTANCE_DIR/$SLUG"
+mkdir -p "$BACKUP_FS_DIR"
+
+BACKUP_FINAL_FILE="$2"
+if [ -z "$BACKUP_FINAL_FILE" ]; then
+    BACKUP_FINAL_FILE="$DEPLOY_BACKUP_FINAL_DIR/$BACKUP_SLUG.tar.gz"
+fi
+
+echo "Destination: $BACKUP_FINAL_FILE"
+if [ -z "$KEEPALIVE" ]; then
+    echo "Keepalive: false (set KEEPALIVE variable for a consistent state)"
+else
+    echo "Keepalive: true (unset the KEEPALIVE variable for a consistent state)"
+fi
+
+BACKUP_START="$(date +%s)"
+
+function do_the_backup() {
+    # cd into the right directory
+    cd "$INSTANCE_BASE_DIR"
+
+    # stop
+    if [ -z "$KEEPALIVE" ]; then
+      log_info " => Shutting down running system"
+      docker-compose down
+    fi
+
+    # system info
+    log_info " => Backup up system information"
+    /bin/bash "$DIR/info.sh" "$SLUG" > "$BACKUP_INFO_FILE"
+
+    # database
+    log_info " => Backing up MySQL database '$MYSQL_DATABASE'"
+    dockerized_mysqldump --databases "$MYSQL_DATABASE" > "$BACKUP_SQL_FILE" || echo "Failed, continuing anyways ..."
+
+    # triplestore
+    log_info " => Backing up GraphDB repository '$GRAPHDB_REPO'"
+    curl -X GET -H "Accept:application/n-quads" $GRAPHDB_AUTH_FLAGS "http://127.0.0.1:7200/repositories/${GRAPHDB_REPO}/statements?infer=false" > "$BACKUP_NQ_FILE" || echo "Failed, contiuing anyways ..."
+
+    # filesystem
+    log_info " => Backing up filesystem from '$INSTANCE_BASE_DIR'"
+    cp -rpT "$INSTANCE_BASE_DIR" "$BACKUP_FS_DIR" || echo "Failed, continuing anyways ..."
+
+    # restart
+    if [ -z "$KEEPALIVE" ]; then
+      log_info " => Starting up sytem"
+      docker-compose up -d
+    fi
+}
+
+# do the actual backup, writing it to a file
+do_the_backup 2>&1 | tee "$BACKUP_LOG_FILE.log"
+
+# list before packaging
+log_info " => All backup files have been collected"
+ls -alh "$BACKUP_INSTANCE_DIR"
+du -hs "$BACKUP_INSTANCE_DIR"
+
+# package up the backup
+log_info " => Packaging \"$BACKUP_FINAL_FILE\" "
+pushd "$BACKUP_INSTANCE_DIR" > /dev/null
+tar --totals --checkpoint=10000 -zcf "$BACKUP_FINAL_FILE" .
+popd > /dev/null
+
+# delete the temporary directory
+log_info " => Deleting temporary directories"
+rm -r "$BACKUP_INSTANCE_DIR"
+
+# and finish!
+log_info " => Finished making backup"
+
+DURATION=$[ $(date +%s) - ${BACKUP_START} ]
+SIZE=$(wc -c < "$BACKUP_FINAL_FILE")
+
+echo "Output file: '$BACKUP_FINAL_FILE'"
+echo "Size:        $SIZE bytes"
+echo "Duration:    $DURATION seconds"
\ No newline at end of file