Using the Cloudant package

The /whisk.system/cloudant package enables you to work with a Cloudant database. It includes the following actions and feeds.

Entity	Type	Parameters	Description
/whisk.system/cloudant	package	dbname, host, username, password	Work with a Cloudant database
/whisk.system/cloudant/read	action	dbname, id	Read a document from a database
/whisk.system/cloudant/write	action	dbname, overwrite, doc	Write a document to a database

Writing to a Cloudant database

You can use an action to store a document in a Cloudant database called testdb. Make sure that this database exists in your Cloudant account.

1. Store a document by using the write action in the package binding you created previously. Be sure to replace /_/myCloudant with your package name.

wsk action invoke /_/myCloudant/write --blocking --result --param dbname testdb --param doc "{\"_id\":\"heisenberg\",\"name\":\"Walter White\"}"

ok: invoked /_/myCloudant/write with id 62bf696b38464fd1bcaff216a68b8287

{
  "id": "heisenberg",
  "ok": true,
  "rev": "1-9a94fb93abc88d8863781a248f63c8c3"
}

2. Verify that the document exists by browsing for it in your Cloudant dashboard.

The dashboard URL for the testdb database looks something like the following: https://MYCLOUDANTACCOUNT.cloudant.com/dashboard.html#database/testdb/_all_docs?limit=100.

Reading from a Cloudant database

You can use an action to fetch a document from a Cloudant database called testdb. Make sure that this database exists in your Cloudant account.

• Fetch a document by using the read action in the package binding that you created previously. Be sure to replace /_/myCloudant with your package name.

  wsk action invoke /_/myCloudant/read --blocking --result --param dbname testdb --param id heisenberg
  

  {
    "_id": "heisenberg",
    "_rev": "1-9a94fb93abc88d8863781a248f63c8c3",
    "name": "Walter White"
  }