This document provides instructions for copying data between databases in 5 minutes using Apps Script. It describes opening a Google Sheet using the database abstraction library, getting all the data, opening a MongoDB database on MongoLab, writing the sheet data to the MongoDB database, and verifying the data was copied correctly. The document then suggests copying the data to a Google Drive file as homework using the driver sheet and driver drive libraries instead of MongoLab.

1. do something useful with
Apps Script in 5 minutes
8. Copy between databases
Bruce McPherson
www.mcpher.com

2. Snippet objectives
● Open a database using dbabstraction
● Copy to another couple of formats
Libraries used
● database abstraction
● driver sheet
● driver mongoLab
● driver drive

3. Add libraries to script
● get the id of the sheet you want to copy
● create a script
● open resources
● add references to libraries
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MPAHw_-cHNDxsYAg263J7Fai_d-phDA33

4. create mongolab account
● If you havent already got a mongolab
account, sign up to a free plan https:
//mongolab.com
● Create a new free deployment

5. create mongolab api key
● Click on your username
● get an API key and enable data access

6. write mongo key to properties
● Write and execute one off script to store
mongolab restapikey to properties service
function oneTimeSet () {
PropertiesService.getUserProperties()
.setProperty("mongoLabKeys", JSON.stringify({
"restAPIKey":"h3xxxxxxcz"
}));
}

7. layout what you are going to do
function copyTheSheet () {
// open the sheet to be copied
// get all the data
// open the database to copy it to
// write it
// check it
}

8. My test data looks like this
Sheet name is 'customers'

9. open the sheet to be copied
● use the ID and Sheet name to open.
// open the sheet to be copied
var sheetHandler = cDbAbstraction.DbAbstraction(cDriverSheet, {
dbid:"1EhgZ1-q9tP1u9BSEQPIQiSGozdfjsHn3zB1JfQGbftw",
siloid:"customers"
});
if (!sheetHandler.isHappy()) throw 'could not open sheet';

10. Get the data on the sheet
● a query with no arguments gets all the data
// get all the data
var result = sheetHandler.query();
if (result.handleCode < 0) throw JSON.stringify(result);

11. Get handle for mongolab database
● will use a collection called 'customers' in the
database 'dosomethinginfive'
var dbHandler = cDbAbstraction.DbAbstraction(cDriverMongoLab, {
dbid:"dosomethinginfive",
siloid:"customers",
driverob:JSON.parse(PropertiesService.getUserProperties()
.getProperty("mongoLabKeys"))
});
if (!dbHandler.isHappy()) throw 'could not open database';

12. delete any existing data
● delete all the current data in the db table
// delete any data already there
var dbResult = dbHandler.remove();
if (dbResult.handleCode < 0) throw JSON.stringify(dbResult);

13. copy the data from the sheet
● copy the data from the sheet
// write it all
var dbResult = dbHandler.save (result.data);
if (dbResult.handleCode < 0) throw JSON.stringify(dbResult);

14. check all was written
● do a count query on what was written
// check that it was all written
var dbResult = dbHandler.count ();
if (dbResult.data[0].count !== result.data.length)
throw 'data counts dont match';

15. look at data on mongolab

16. Homework
Do the same thing, but copy to a Drive file
instead of MongoLab.
Hints.
● You'll need cDriverDrive (Ma__4vH--nQ_FPsuNF1BFuyz3TLx7pV4j)
● There is only one line different from the mongolab version (specify the folder and file name)
// open the database to copy it to
var dbHandler = cDbAbstraction.DbAbstraction(cDriverDrive, {
dbid:"/datahandler/driverdrive/tasks",
siloid:"customers.json"
});

17. Follow up materials
Take a copy of these slides
Join me on G+, or the G+ community
More on desktop liberation
More on database abstraction
More 5 minute things