Building Microservices with Go

Filtering

When we looked at RESTful APIs we discussed the concept of using the query string to perform filtering actions such as:

• Paging
• Filtering
• Sorting

Obviously, if we are writing an RPC API, we do not have the luxury of a query string; however, implementing these concepts is incredibly useful. As long as we are consistent there is no reason at all that we cannot define a parameter on our request object for the filter condition:

{ "jsonrpc": "2.0",  "method": "Users.v1.GetUserLog", "params": {   "name": "Nic Jackson",    "id": 12335432434,   "filter": {      "page_start": 1,  //optional      "page_size" : 10,  //optional      "sort": "name DESC" //optional    }, "id": 1}

This is just an example and you will probably choose to implement something specific ...