Google Weather Oracle

You can use Chainlink to digest weather information using Google Cloud Public Datasets. We have a sample brownie repo showing how to interact with the contracts available in our gcp-weather brownie repo. More information on this oracle can be found in the following Google Cloud article.

Parameters and External Adapters Details

These jobs are using a custom external adapter. Please see the Google weather external adapter to see information about parameters that can be used with these jobs.

Chainlink Network Details

You will need to use the following LINK token address, oracle address, and JobSpec IDs in order to create the Chainlink request to this oracle.

Mainnet

Steps For Using This Oracle

• Write and deploy your contract using the network details above.
• Fund it with LINK
• Call your request method

Create your Chainlinked contract

Import ChainlinkClient.sol into your contract so you can inherit the ChainlinkClient behavior. Below is a sample that can call the hail, rain, and average temperature jobs to fetch weather data from Bergen, Norway.

Jobs

Rain (Bergen, Norway)

Tasks

1. gcp-weather: Makes a call to the google weather dataset
   1. Parameters:

{
  "geoJson": {
    "type": "FeatureCollection",
    "features": [
      {
        "type": "Feature",
        "geometry": {
          "type": "Point",
          "coordinates": [5.325622558593749, 60.3887552979679]
        },
        "properties": {}
      }
    ]
  }
}

2. multiply: Multiples the output - set to 1000000000000000000
3. ethuint256: Turns the result into a uint256
4. ethTx: Sends the TX to the blockchain

Hail (Bergen, Norway)

Tasks

1. gcp-weather: Makes a call to the google weather dataset
   1. Parameters

{
  "geoJson": {
    "type": "FeatureCollection",
    "features": [
      {
        "type": "Feature",
        "geometry": {
          "type": "Polygon",
          "coordinates": [
            {
              "0": [5.2796173095703125, 60.40673218057448],
              "1": [5.164947509765625, 60.383665698324926],
              "2": [5.17730712890625, 60.211509994185604],
              "3": [5.401153564453124, 60.27694067255946],
              "4": [5.6188201904296875, 60.436558668419984],
              "5": [5.526123046875, 60.42842688461354],
              "6": [5.3002166748046875, 60.5387098888639],
              "7": [5.238418579101562, 60.4951151199491],
              "8": [5.2796173095703125, 60.40673218057448]
            }
          ]
        },
        "properties": {}
      }
    ]
  }
}

2. ethuint256: Turns the result into a uint256
3. ethTx: Sends the TX to the blockchain

Average Temperature (Bergen, Norway)

Tasks

1. gcp-weather: Makes a call to the google weather dataset
   1. Parameters:

{
  "geoJson": {
    "type": "FeatureCollection",
    "features": [
      {
        "type": "Feature",
        "geometry": {
          "type": "Polygon",
          "coordinates": [
            {
              "0": [5.2796173095703125, 60.40673218057448],
              "1": [5.164947509765625, 60.383665698324926],
              "2": [5.17730712890625, 60.211509994185604],
              "3": [5.401153564453124, 60.27694067255946],
              "4": [5.6188201904296875, 60.436558668419984],
              "5": [5.526123046875, 60.42842688461354],
              "6": [5.3002166748046875, 60.5387098888639],
              "7": [5.238418579101562, 60.4951151199491],
              "8": [5.2796173095703125, 60.40673218057448]
            }
          ]
        },
        "properties": {}
      }
    ]
  }
}

2. multiply: Multiples the output - set to 1000000000000000000
3. ethuint256: Turns the result into a uint256
4. ethTx: Sends the TX to the blockchain

Generic (Any Location)

Tasks

1. gcp-weather: Makes a call to the google weather dataset
2. multiply: Multiples the output
3. ethuint256: Turns the result into a uint256
4. ethTx: Sends the TX to the blockchain

Input Parameters

Please see the Google weather external adapter to see information about parameters that can be used with these jobs.