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46 lines
1.8 KiB
Bash
Executable File
46 lines
1.8 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Copyright (c) 2016-2018 Timescale, Inc. All Rights Reserved.
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#
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# This file is licensed under the Apache License, see LICENSE-APACHE
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# at the top level directory of the timescaledb distribution.
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# This script is used for backing up a single hypertable into an easy-to-restore
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# tarball. The tarball contains two files: (1) a .sql file for recreating the
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# hypertable and its indices and (2) a .csv file containing the data as CSV.
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#
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# Because pg_dump/pg_restore dump all of TimescaleDB's internal tables when
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# used, this script is useful if you want a backup that can be restored
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# regardless of TimescaleDB version running, or as part of a process where you
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# do not want to always backup all your hypertables at once.
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if [[ -z "$1" || -z "$2" ]]; then
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echo "Usage: $0 hypertable output_name [pg_dump CONNECTION OPTIONS]"
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echo " hypertable - Hypertable to backup"
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echo " output_name - Output files will be stored in an archive named [output_name].tar.gz"
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echo " "
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echo "Any connection options for pg_dump/psql (e.g. -d database, -U username) should be listed at the end"
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exit 1
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fi
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HYPERTABLE=$1
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PREFIX=$2
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shift 2
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set -e
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echo "Backing up schema as $PREFIX-schema.sql..."
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pg_dump $@ --schema-only -t $HYPERTABLE -f $PREFIX-schema.sql
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echo "--" >> $PREFIX-schema.sql
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echo "-- Restore to hypertable" >> $PREFIX-schema.sql
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echo "--" >> $PREFIX-schema.sql
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psql $@ -qAtX -c "SELECT _timescaledb_internal.get_create_command('$HYPERTABLE');" >> $PREFIX-schema.sql
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echo "Backing up data as $PREFIX-data.csv..."
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psql $@ -c "\COPY (SELECT * FROM $HYPERTABLE) TO $PREFIX-data.csv DELIMITER ',' CSV"
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echo "Archiving and removing previous files..."
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tar -czvf $PREFIX.tar.gz $PREFIX-data.csv $PREFIX-schema.sql
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rm $PREFIX-data.csv
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rm $PREFIX-schema.sql
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