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External

Fetch

Name: Fetch

Type: varies

Fetch data from an external HTTP API.

The response from the API must be JSON-deserializable.

Use the generics syntax to specify the type of the returned object (see example).

use Fetch from hexagate;

struct Result {
  field1: string,
  field2: integer,
  field3: list<integer>,
};

struct Body {
  prop1: bool,
  prop2: string,
};

source result: Result = Fetch<Result> {
  url: "https://some.url.to/your/api",
  method: "PUT",
  headers: map(
    "Some-Header": "some_value",
  ),
  body: Body {
    prop1: true,
    prop2: "something"
  },
  interval: 10,
};

invariant {
  description: "Fetch only a string",
  condition: Fetch<string> {
    url: "http://this.is.a.third/url?cool=wow",
    body: 12345,
  } == "some string"
};

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Last updated 1 year ago

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Fetch