@leapfrogtechnology/sync-db
v2.1.1
Published
Command line utility to synchronize and version control relational database objects across databases
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sync-db
Command line utility to synchronize and version control relational database objects across databases.
Installation
Using npm:
$ npm install @leapfrogtechnology/sync-db
You can install it globally as well.
$ npm install -g @leapfrogtechnology/sync-db
Drivers Installation
You'll need to install the database driver specific to your project separately.
For instance - if your project uses MSSQL, you will need to do:
$ yarn add mssql
This utility uses Knex under the hood so these are the supported drivers.
Usage
You can use sync-db
both as a CLI utility and programmatically.
$ npm install -g @leapfrogtechnology/sync-db
$ sync-db COMMAND
running command...
$ sync-db (-v|--version|version)
@leapfrogtechnology/sync-db/2.1.1 linux-x64 node-v20.12.2
$ sync-db --help [COMMAND]
USAGE
$ sync-db COMMAND
...
Commands
When installed globally, you can invoke the CLI directly.
The CLI exposes a single command sync-db
that runs synchronize operation based on your configuration.
sync-db
sync-db help [COMMAND]
sync-db make NAME
sync-db make-publish
sync-db migrate-latest
sync-db migrate-list
sync-db migrate-rollback
sync-db prune
sync-db synchronize
sync-db
USAGE
$ sync-db
See code: src/commands/index.ts
sync-db help [COMMAND]
display help for sync-db
USAGE
$ sync-db help [COMMAND]
ARGUMENTS
COMMAND command to show help for
OPTIONS
--all see all commands in CLI
See code: @oclif/plugin-help
sync-db make NAME
Make migration files from the template.
USAGE
$ sync-db make NAME
ARGUMENTS
NAME Object or filename to generate.
OPTIONS
-c, --config=config Custom configuration file.
-t, --type=TYPE [default: migration] Type of file to generate.
--create Generate create table stub.
--object-name=object-name Name of table/view/routine to migrate.
See code: src/commands/make.ts
sync-db make-publish
Publish migration templates files.
USAGE
$ sync-db make-publish
OPTIONS
-c, --config=config Custom configuration file.
See code: src/commands/make-publish.ts
sync-db migrate-latest
Run the migrations up to the latest changes.
USAGE
$ sync-db migrate-latest
OPTIONS
-c, --config=config Custom configuration file.
--connection-resolver=PATH Path to the connection resolver.
--dry-run Dry run migration.
--only=CONNECTION_ID(s) Filter provided connection(s). Comma separated ids eg: id1,id2
See code: src/commands/migrate-latest.ts
sync-db migrate-list
List all the migrations.
USAGE
$ sync-db migrate-list
OPTIONS
-c, --config=config Custom configuration file.
--connection-resolver=PATH Path to the connection resolver.
--only=CONNECTION_ID(s) Filter provided connection(s). Comma separated ids eg: id1,id2
See code: src/commands/migrate-list.ts
sync-db migrate-rollback
Rollback migrations up to the last run batch.
USAGE
$ sync-db migrate-rollback
OPTIONS
-c, --config=config Custom configuration file.
--connection-resolver=PATH Path to the connection resolver.
--dry-run Dry run rollback.
--only=CONNECTION_ID(s) Filter provided connection(s). Comma separated ids eg: id1,id2
See code: src/commands/migrate-rollback.ts
sync-db prune
Drop all the synchronized db objects except the ones created via migrations.
USAGE
$ sync-db prune
OPTIONS
-c, --config=config Custom configuration file.
--connection-resolver=PATH Path to the connection resolver.
--dry-run Dry run prune.
--only=CONNECTION_ID(s) Filter provided connection(s). Comma separated ids eg: id1,id2
See code: src/commands/prune.ts
sync-db synchronize
Synchronize all the configured database connections.
USAGE
$ sync-db synchronize
OPTIONS
-c, --config=config Custom configuration file.
-f, --force Force synchronization.
--connection-resolver=PATH Path to the connection resolver.
--dry-run Dry run synchronization.
--only=CONNECTION_ID(s) Filter provided connection(s). Comma separated ids eg: id1,id2
--skip-migration Skip running migrations.
See code: src/commands/synchronize.ts
Refer to the examples section below for full example with CLI usage.
Programmatic Usage
You may use programmatic API as shown below in case you need better flexibility based on your needs.
import { synchronize, loadConfig, resolveConnections } from '@leapfrogtechnology/sync-db';
(async () => {
const config = await loadConfig(); // Load sync-db.yml
const connections = await resolveConnections(); // Load connections.sync-db.json
// Invoke the command.
await synchronize(config, connections);
})();
You can also pass your own database connection (eg: Knex connection) instead of resolving connections.sync-db.json
file.
import { knex } from 'knex';
import { synchronize, loadConfig } from '@leapfrogtechnology/sync-db';
(async () => {
const config = await loadConfig(); // Load sync-db.yml
const connection = knex({
// Your Knex connection instance.
client: 'mssql',
connection: {
host: 'host',
user: 'userName',
password: 'password',
database: 'dbName'
}
});
const options = { force: false };
// Invoke the command.
await synchronize(config, connection, options);
})();
Configuration
1. Sync Configuration
sync-db expects the configuration file sync-db.yml
to be present in your working directory. This holds all your configurations.
sync-db.yml
# Base path for the SQL source files.
basePath: /path/to/sql
sql:
- schema/<schema_name>.sql
- function/<schema_name>/<function_name>.sql.drop # While synchronizing this will only be dropped, not synced.
- procedure/<schema_name>/<procedure_name>.sql
Configuration Options
basePath
(string)
- Base directory to hold all your SQL & migrations codebase (default: "src").sql
(array)
- A series of SQL file paths that are to be run in ordered sequence (top to bottom), based on dependency. It should be noted that the source files needs to follow this convention of directory hierarchy. File paths listed here are relative to${basePath}/sql
value.migration
(array)
- Migrations specific configurations.sourceType
(string)
- Type of migration file. Valuedefaults
to sql. - example: javascript, typescript.tableName
(string)
- Custom name for table to store migrations meta data.
connectionResolver
(string
) - Connection resolver file name optional if connections are resolved usingconnections.sync-db.json
.
2. Database Connections
Database connections are configured in connections.sync-db.json
file in your project root directory as shown below.
Since it contains all your database credentials, it is recommended that you DO NOT COMMIT it to VCS.
connections.sync-db.json
{
"connections": [
{
"id": "db1",
"host": "localhost",
"port": 1433,
"user": "db1user",
"database": "db1",
"password": "password",
"client": "mssql"
}
]
}
Note: The connections
key expects an array, so you can also provide multiple databases and sync-db
ensures your configured db objects are synced across all these databases.
Connection using connection-resolver.js
File consists a resolve
function which returns an array of connections to the databases. Add the resolver file name to connectionResolver
field in sync-db.yml.
Caveat
Setup and Teardown steps aren't always run within a single transaction. You need to pass the transaction instance object explicitly to make sure this happens.
await db.transaction(async trx => {
// Rollback and create all db objects using config.
await synchronize(config, trx);
});
Examples
- Node MSSQL JavaScript Sample
- Node MSSQL TypeScript Sample
- Node MSSQL Programmatic Usage Sample
- Node PostgreSQL JavaScript Sample
- Node PostgreSQL TypeScript Sample
Changelog
Check the CHANGELOG for release history.
Contributing
Feel free to send pull requests.
Development
Setting up
# Clone the repository.
$ git clone https://github.com/leapfrogtechnology/sync-db.git
# Go to the project directory.
$ cd sync-db
# Install dependencies. (Notice that we use yarn for this.)
$ yarn
Building / Testing
# Generate build.
$ yarn build
# Run tests
$ yarn test
# Invoke the CLI locally (development mode).
$ bin/run-dev.sh
Release
Publish a new version.
Create a PR updating version in package.json to master.
License
Licensed under The MIT License.