80 lines
2.4 KiB
Bash
Executable File
80 lines
2.4 KiB
Bash
Executable File
#!/bin/bash
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set -e
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SCRIPT=$(basename "$0")
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VERSION="1.0.0"
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# Display Help
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Help() {
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echo
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echo "$SCRIPT"
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echo
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echo "Description: Duplicate database in Postgres Docker container."
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echo "Syntax: $SCRIPT [-c|-s|-t|-r|-u|-V|help]"
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echo "Example: $SCRIPT -c postgres01 -s keycloak-main -t keycloak-int -r -u"
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echo "options:"
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echo " -c Docker container."
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echo " -s Source database name."
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echo " -t Target database name."
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echo " -r Replace existing database."
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echo " -V Show $SCRIPT version."
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echo " help Show $SCRIPT manual."
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echo
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}
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# Show help and exit
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if [[ "$1" == "help" ]]; then
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Help
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exit
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fi
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# Initialise option flag with a false value
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REPLACE='false'
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# Process params
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while getopts ":c: :s: :t: :r :V" opt; do
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case $opt in
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c) CONTAINER="$OPTARG";;
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s) SOURCE_DATABASE="$OPTARG";;
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t) TARGET_DATABASE="$OPTARG";;
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r) REPLACE='true';;
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V) echo "$SCRIPT version $VERSION"
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exit 0
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;;
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\?) echo "Invalid option -$OPTARG" >&2
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Help
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exit;;
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esac
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done
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# Verify variables
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[[ -z "$CONTAINER" ]] && { echo "Parameter -c|container is empty" ; exit 1; }
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[[ -z "$SOURCE_DATABASE" ]] && { echo "Parameter -s|source is empty" ; exit 1; }
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[[ -z "$TARGET_DATABASE" ]] && { echo "Parameter -t|target is empty" ; exit 1; }
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[[ "$TARGET_DATABASE" == "$SOURCE_DATABASE" ]] && { echo "Parameter -s|source and -t|target cannot be the same" ; exit 1; }
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# Switch container name with id
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CONTAINER_ID=$(docker ps -f "name=${CONTAINER}$" -q | tail -n1)
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[[ -z "$CONTAINER_ID" ]] && { echo "Container id for $CONTAINER not found." ; exit 1; }
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# Set alias
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docker_exec_bash="docker exec $CONTAINER_ID /bin/bash -c"
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docker_exec_root_bash="docker exec --user root $CONTAINER_ID /bin/bash -c"
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# Clear database
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if $REPLACE; then
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docker-postgres-drop -c "$CONTAINER" -d "$TARGET_DATABASE"
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fi
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# Kill datbase connections
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echo "Kill database connections on $SOURCE_DATABASE."
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QUERY="SELECT pg_terminate_backend(pid) FROM pg_stat_activity WHERE datname = '$SOURCE_DATABASE';"
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$docker_exec_bash "psql postgres://\$POSTGRES_USER:\$POSTGRES_PASSWORD@\$HOSTNAME:5432/postgres -c \"$QUERY\""
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# Duplicate database
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echo "Duplicate database from $SOURCE_DATABASE to $TARGET_DATABASE."
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$docker_exec_bash "createdb -U \$POSTGRES_USER -T $SOURCE_DATABASE $TARGET_DATABASE"
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# Notify if backup has finished
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echo "The duplication for Postgres database $TARGET_DATABASE has finished."
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