Function: Basic Bucket Ops

Enterprise Edition

Goal: Perform the basic bucket operations where Eventing interacts with the Data service.

This function basicBucketOps merely demonstrates basic Evening BucketOps.
Requires a metadata bucket, a source bucket, and a bucket called "destination".
Needs a Binding of type Bucket Alias (as documented in the Scriptlet).
Will operate on any mutation where doc.type === "basic_bkt_ops".
The final document is deleted, as such the output is the Application log file.
For more detail refer to Bucket Accessors

basicBucketOps
Input Data/Mutation
Output Data/Logged

// To run need a Binding in this Function's Settings as follows:
// 1. Bucket Alias
// 2. dst_bkt
// 3. destination
// 4. read+write
function OnUpdate(doc, meta) {
  // filter out non-interesting docs
  if (doc.type !== "basic_bkt_ops") return;
  // Assuming 'dst_bkt' is a bucket alias binding in this case to a non source bucket
  log("OnUpdate got mutation for id",meta.id,"doc",doc);

  // make a key based on the meta.id of the input mutation
  var dst_key = "dst_" + meta.id;
  // make a document to write, include the input mutation's doc
  var doc_to_wr = {"status":3, "mutation": doc};

  // this is a bucket SET operation.
  dst_bkt[dst_key] = doc_to_wr;
  log("wrote DOC to dst_bkt with id",dst_key,doc_to_wr);

  // this is a bucket GET operation.
  var doc_read = dst_bkt[dst_key];
  log("read DOC from dst_bkt with id",dst_key,doc_read);

  // this is a bucket DEL operation.
  delete dst_bkt[dst_key];
  log("deleted "+dst_key+" from dst_bkt");
}

INPUT: KEY basic_bkt_ops::1

{
  "type": "basic_bkt_ops",
  "id": 1,
  "test": true
}

2020-08-06T17:16:50.429-07:00 [INFO] "deleted dst_basic_bkt_ops::1 from dst_bkt"

2020-08-06T17:16:50.428-07:00 [INFO] "read DOC from dst_bkt with id" "dst_basic_bkt_ops::1" {"status":3,"mutation":{"type":"basic_bkt_ops","id":1,"test":true}}

2020-08-06T17:16:50.427-07:00 [INFO] "wrote DOC to dst_bkt with id" "dst_basic_bkt_ops::1" {"status":3,"mutation":{"type":"basic_bkt_ops","id":1,"test":true}}