https://github.com/cloudspannerecosystem/spanner-dump

Command line tool for exporting a Cloud Spanner database in text format
https://github.com/cloudspannerecosystem/spanner-dump

Last synced: 29 days ago
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Command line tool for exporting a Cloud Spanner database in text format

• Host: GitHub
• URL: https://github.com/cloudspannerecosystem/spanner-dump
• Owner: cloudspannerecosystem
• License: apache-2.0
• Created: 2020-04-08T03:34:37.000Z (over 4 years ago)
• Default Branch: master
• Last Pushed: 2024-06-07T01:53:40.000Z (6 months ago)
• Last Synced: 2024-08-04T01:15:22.550Z (4 months ago)
• Language: Go
• Homepage:
• Size: 175 KB
• Stars: 39
• Watchers: 5
• Forks: 14
• Open Issues: 7
• Metadata Files:
  • Readme: README.md
  • Contributing: CONTRIBUTING.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-spanner - spanner-dump - A command-line tool to export Cloud Spanner databases in text format. (Tools / ORM)

README

        
spanner-dump [![run-tests](https://github.com/cloudspannerecosystem/spanner-dump/actions/workflows/run-tests.yaml/badge.svg)](https://github.com/cloudspannerecosystem/spanner-dump/actions/workflows/run-tests.yaml)

===

spanner-dump is a command line tool for exporting a Cloud Spanner database in text format.

Exported databases can be imported to Cloud Spanner with [spanner-cli](https://github.com/cloudspannerecosystem/spanner-cli).

```sh

# Export

$ spanner-dump -p ${PROJECT} -i ${INSTANCE} -d ${DATABASE} > data.sql

# Import

$ spanner-cli -p ${PROJECT} -i ${INSTANCE} -d ${DATABASE} < data.sql

```

Please feel free to report issues and send pull requests, but note that this application is not officially supported as part of the Cloud Spanner product.

## Use cases

This tool can be used for the following use cases.

- Export a database schema and/or data in text format for testing purposes

- Export a database running on [Cloud Spanner Emulator](https://cloud.google.com/spanner/docs/emulator)

For production databases, you should use an [officially-provided export](https://cloud.google.com/spanner/docs/export),

which should be stable and much faster.

## Limitations

- This tool does not ensure consistency between database schema (DDL) and data. So you should avoid making changes to the schema while you are running this tool.

- This tool does not consider data order constrained by [Foreign Keys](https://cloud.google.com/spanner/docs/foreign-keys/overview).

## Install

```

go install github.com/cloudspannerecosystem/spanner-dump@latest

```

## Usage

```

Usage:

  spanner-dump [OPTIONS]

Application Options:

  -p, --project=   (required) GCP Project ID. [$SPANNER_PROJECT_ID]

  -i, --instance=  (required) Cloud Spanner Instance ID. [$SPANNER_INSTANCE_ID]

  -d, --database=  (required) Cloud Spanner Database ID. [$SPANNER_DATABASE_ID]

      --tables=    comma-separated table names, e.g. "table1,table2"

      --no-ddl     No DDL information.

      --no-data    Do not dump data.

      --timestamp= Timestamp for database snapshot in the RFC 3339 format.

      --bulk-size= Bulk size for values in a single INSERT statement.

Help Options:

  -h, --help       Show this help message

```

This tool uses [Application Default Credentials](https://cloud.google.com/docs/authentication/production)

to connect to Cloud Spanner. Please make sure to get credentials via `gcloud auth application-default login`

before using this tool.

Also, you need to have a [roles/spanner.databaseReader](https://cloud.google.com/spanner/docs/iam#roles)

IAM role to use this tool.

## Disclaimer

This tool is still ALPHA quality. Do not use this tool for production databases.