SchemaSynchronization‐Fetch

Fetch

The fetch is the process show differences between sources and schema but not apply changes.The pull process is done by the command lambdaorm fetch.

CLI

The fetch command allows you to obtain the mapping of the database tables.
Using the -o argument you can specify the output format, in this case yaml.
The mapping.yaml file will contain the mapping of the database tables. \

Ejecución del comando fetch

lambdaorm fetch -o yaml  > mapping.yaml

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Node

The fetch command allows you to obtain the mapping of the database tables.
Using the -o argument you can specify the output format, in this case yaml.
The mapping.yaml file will contain the mapping of the database tables. \

import { Orm } from 'lambdaorm'
(async () => {
	const workspace = process.cwd()
	const orm = new Orm(workspace)
	try{		
		const originalSchema = orm.helper.yaml.load(await orm.helper.fs.read(workspace + '/lambdaOrm.yaml'))
		await orm.init(originalSchema)	
		const mappings = await orm.stage.fetch()
		await orm.helper.fs.write( workspace + '/mappings.yaml', orm.helper.yaml.dump(mappings))
	}catch(e){
		console.log(e)
	} finally {
		orm.end()
	}	
})()

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