Update documentation

Dockerfile

@@ -22,6 +22,6 @@ ENV BACKUP_KEEP_DAYS ''
 ADD src/run.sh run.sh
 ADD src/env.sh env.sh
 ADD src/backup.sh backup.sh
-# ADD src/restore.sh restore.sh  -- not ready yet
+ADD src/restore.sh restore.sh
 
 CMD ["sh", "run.sh"]

README.md

@@ -42,22 +42,19 @@ services:
 
 ### Restore
 
-> [!NOTE]
-> The restore command is yet to be ported from the original restore script from [`eeshugerman/postgres-backup-s3`](https://github.com/eeshugerman/postgres-backup-s3). Contributions are welcome :)
-
 > [!CAUTION]
-> DATA LOSS! All folder content will be dropped and re-created.
+> All existing files will be replaced by the backup content!
 
-#### ... from latest backup
+#### From latest backup
 
 ```sh
 docker exec <container_name> sh restore.sh
 ```
 
 > [!NOTE]
-> If your bucket has more than a 1000 files, the latest may not be restored -- only one S3 `ls` command is used
+> If your bucket has over 1000 files, the latest may not be restored – the S3 `ls` command is issued only once.
 
-#### ... from specific backup
+#### From specific backup
 
 ```sh
 docker exec <container_name> sh restore.sh <timestamp>
@@ -65,7 +62,8 @@ docker exec <container_name> sh restore.sh <timestamp>
 
 ## Development
 
-### Run a simple test environment with Docker Compose
+You can use the Docker Compose file in the root with your own S3 bucket for development and testing.
+
 ```sh
 cp .env.example .env
 # fill out your secrets/params in .env

src/backup.sh

@@ -9,7 +9,7 @@ echo "Creating backup..."
 tar -czf dump.tar.gz /data
 
 timestamp=$(date +"%Y-%m-%dT%H:%M:%S")
-s3_uri_base="s3://${S3_BUCKET}/${S3_PREFIX}/${BACKUP_NAME}_${timestamp}.dump"
+s3_uri_base="s3://${S3_BUCKET}/${S3_PREFIX}/${BACKUP_NAME}_${timestamp}.tar.gz"
 
 if [ -n "$PASSPHRASE" ]; then
   echo "Encrypting backup..."

src/restore.sh

@@ -8,18 +8,18 @@ source ./env.sh
 s3_uri_base="s3://${S3_BUCKET}/${S3_PREFIX}"
 
 if [ -z "$PASSPHRASE" ]; then
-  file_type=".dump"
+  file_type=".tar.gz"
 else
-  file_type=".dump.gpg"
+  file_type=".tar.gz.gpg"
 fi
 
 if [ $# -eq 1 ]; then
   timestamp="$1"
-  key_suffix="${POSTGRES_DATABASE}_${timestamp}${file_type}"
+  key_suffix="${BACKUP_NAME}_${timestamp}${file_type}"
 else
   echo "Finding latest backup..."
   key_suffix=$(
-    aws $aws_args s3 ls "${s3_uri_base}/${POSTGRES_DATABASE}" \
+    aws $aws_args s3 ls "${s3_uri_base}/${BACKUP_NAME}" \
       | sort \
       | tail -n 1 \
       | awk '{ print $4 }'
@@ -27,18 +27,16 @@ else
 fi
 
 echo "Fetching backup from S3..."
-aws $aws_args s3 cp "${s3_uri_base}/${key_suffix}" "db${file_type}"
+aws $aws_args s3 cp "${s3_uri_base}/${key_suffix}" "dump${file_type}"
 
 if [ -n "$PASSPHRASE" ]; then
   echo "Decrypting backup..."
-  gpg --decrypt --batch --passphrase "$PASSPHRASE" db.dump.gpg > db.dump
-  rm db.dump.gpg
+  gpg --decrypt --batch --passphrase "$PASSPHRASE" dump.tar.gz.gpg > dump.tar.gz
+  rm dump.tar.gz.gpg
 fi
 
-conn_opts="-h $POSTGRES_HOST -p $POSTGRES_PORT -U $POSTGRES_USER -d $POSTGRES_DATABASE"
-
 echo "Restoring from backup..."
-pg_restore $conn_opts --clean --if-exists db.dump
-rm db.dump
+tar -xzf dump.tar.gz -C /data --strip-components 1
+rm dump.tar.gz
 
 echo "Restore complete."