mirror of
https://github.com/TheAnachronism/docspell.git
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132 lines
3.7 KiB
Bash
Executable File
132 lines
3.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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#
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# Create and restore dumps from h2 databases.
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#
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# H2 dumps should be created using the same (or compatible) version of
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# h2 that is used to run the db.
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#
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# Docspell 0.38.0 and earlier uses H2 1.4.x. From Docspell 0.39.0
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# onwards it's 2.1.x.
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#
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# Set the H2 version via an environment variable 'H2_VERSION'.
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# Additionally a user and password are required, set these via env
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# variables H2_USER and H2_PASSWORD. (or modify this script)
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#
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# Creating/restoring a dump requires to specify the database file. H2
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# appends suffixes like '.mv.db' and '.trace.db', but here the base
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# file is required. So if you see a file 'mydb.mv.db', specify here
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# 'mydb' only or a complete JDBC url.
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#
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# The target file or target db must not exist.
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#
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# The dump file contains (H2 specific) SQL that recreates the
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# database. It can be modified if necessary. This SQL script can then
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# be used to restore the database even to a newer version of H2.
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set -e
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h2_user=${H2_USER:-"sa"}
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h2_password=${H2_PASSWORD:-""}
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h2_version=${H2_VERSION:-"1.4.200"}
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#h2_version="2.1.214"
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h2_jar_url="https://search.maven.org/remotecontent?filepath=com/h2database/h2/$h2_version/h2-$h2_version.jar"
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h2_jdbc_opts=";MODE=PostgreSQL;DATABASE_TO_LOWER=TRUE"
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tempdir=$(mktemp -d "h2-util.XXXXX")
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trap "rm -rf $tempdir" EXIT
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prepare() {
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echo "Prepare for h2 version: $h2_version"
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curl -sSL -o $tempdir/h2.jar "$h2_jar_url"
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}
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create_dump() {
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src_db_file="$1"
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target_file="$2"
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jdbc_url=""
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if [[ "$src_db_file" =~ jdbc:h2:.* ]]; then
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jdbc_url="$src_db_file"
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elif [ -r "$src_db_file.mv.db" ]; then
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jdbc_url="jdbc:h2://$(realpath "$src_db_file")$h2_jdbc_opts"
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else
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echo "Invalid database. Either specify the file or a full JDBC url."
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echo "Usage: $0 dump <db-file|jdbc_url> <target-file>"
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exit 1
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fi
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if [ -z "$target_file" ]; then
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echo "No target file given"
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echo "Usage: $0 dump <db-file|jdbc_url> <target-file>"
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exit 1
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fi
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if [ -r "$target_file" ]; then
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echo "The target file '$target_file' already exists!"
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echo "Usage: $0 dump <db-file|jdbc_url> <target-file>"
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exit 1
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fi
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echo "Creating a dump: $jdbc_url -> $target_file"
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prepare
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java -cp "$tempdir/h2.jar" org.h2.tools.Script \
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-url "$jdbc_url" \
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-user "$h2_user" \
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-password "$h2_password" \
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-script "$target_file"
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}
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restore_dump() {
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backup_file="$1"
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target_db_file="$2"
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jdbc_url=""
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if [[ "$target_db_file" =~ jdbc:h2:.* ]]; then
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jdbc_url="$target_db_file"
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elif ! [ -r "$target_db_file.mv.db" ]; then
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jdbc_url="jdbc:h2://$(realpath "$target_db_file")$h2_jdbc_opts"
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else
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echo "Invalid database or it does already exist. Either specify the file or a full JDBC url."
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echo "Usage: $0 restore <dump-file> <db-file|jdbc_url>"
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exit 1
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fi
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if [ -z "$backup_file" ]; then
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echo "No dump file given"
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echo "Usage: $0 restore <dump-file> <db-file|jdbc_url>"
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exit 1
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fi
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if ! [ -r "$backup_file" ]; then
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echo "The dump file '$backup_file' doesn't exists!"
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echo "Usage: $0 dump <db-file|jdbc_url> <target-file>"
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exit 1
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fi
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echo "Restore a dump: $backup_file -> $jdbc_url"
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prepare
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java -cp "$tempdir/h2.jar" org.h2.tools.RunScript \
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-url "$jdbc_url" \
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-user "$h2_user" \
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-password "$h2_password" \
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-script "$backup_file" \
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-options FROM_1X
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}
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case "$1" in
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dump)
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shift
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create_dump "$@"
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;;
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restore)
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echo "Restoring from a file"
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shift
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restore_dump "$@"
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;;
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*)
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echo "Invalid command. One of: dump, restore"
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exit 1
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esac
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