BUG: happi update functionality changed

[tangkong]

Expected Behavior

happi update should work intuitively, or at least be clear about how to use it.

Current Behavior

In the past, it was possible to pipe json into happi update. This appears to no longer be the case.

The following no longer works: cat my.json | happi update

but this works for him: happi update $(cat my.json)

Possible Solution

Two-fold:

• be smarter about parsing the json input
• Improve documentation on using this

Steps to Reproduce (for bugs)

1. Create a json file -> my.json
2. try cat my.json | happi update

Context

This was reported by @untzag (thank you!)

Some points revealed as I investigated. happi update:

• expects a list of json "dictonaries", not a single dictionary with
  • This means if you are using the json backend and simply copy an entry, this will fail
• fails on cat my.json | happi update
  • happi does not receive any json data, but you actually need to use xargs. in other words, this is expected to fail
• eats quotations if you try cat my.json | xargs happi update
  • failure comes from json expecting double quotes around field names and not finding them

Your Environment

happi 2.3.0