Batch delegator rewards

[faboweb]

Summary

As a developer
I want to query for the rewards of a delegators delegations per validator in one request
So I don't DDOS my app

Problem Definition

GET /distribution/delegators/{delegatorAddr}/rewards currently serves all rewards for my delegator.
It would be nice if this would show the rewards of that delegator by validator.

AC1

Proposed return struct:

{
  "total": 10.50,
  "rewards": [
    {
      "validator_address": "val_0_address",
      "rewards": "2.0",
    },
    {
      "validator_address": "val_1_address",
      "rewards": "2.0",
    },
    {
      "validator_address": "val_2_address",
      "rewards": "6.50",
    }
  ]
}

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For Admin Use

• Not duplicate issue
• Appropriate labels applied
• Appropriate contributors tagged
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@fedekunze

[alessio]

@faboweb

Response alternative counterproposal:

{
  "total": 10.50,
  "rewards": [
    {
      "validator": "val_0_address",
      "rewards": "2.0",
    },
    {
      "validator": "val_1_address",
      "rewards": "2.0",
    },
    {
      "validator": "val_2_address",
      "rewards": "6.50",
    }
  ]
}

[faboweb]

Looks good 👍