How to create a conditional node with JMESPath

Question

With JMESPath based on the following:

• If the input is

  { "app": { "usertype": "power" } }
  

  I would like to create

  { "output": { "aslist": true } }
  

• If the input is

  { "app": { "usertype": "simple" } }
  

  I would like to create:

  { "output": { "aslist": false } }
  

I can create the output but not the conditional part. Seems like a simple if then else but I can't find any documentation on that.

Any suggestions?

Answer 1

You can simply use the evaluation of a condition in JMESPath as a value for your resulting JSON.

Given the query:

{output: {aslist: app.usertype == 'power'}}

• On your example JSON:

  { 
    "app": { 
      "usertype": "power" 
    } 
  }
  

  This would give

  {
    "output": {
      "aslist": true
    }
  }
  

• On your example JSON:

  { 
    "app": { 
      "usertype": "simple" 
    } 
  }
  

  This would give

  {
    "output": {
      "aslist": false
    }
  }
  

But, of course, since it is a simple evaluation of a condition based on your simplified example it would also give you a false for anything that is not of usertype being power.