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lib/idempotency_key/README.md
# IdempotencyKey
## Description
Provides functionality for idempotent controllers. Extract, verify format of idempotency keys.
## Usage
Most like you want to add it your contoller. An example of usage:
```elixir
def create(conn, params) do
with {:ok, idempotency_key} <- IdempotencyKey.get(conn),
{:ok, schema} <- validate_params_and_add_idempotency_key(params, idempotency_key),
{:ok, entity} <- create_entity(schema) do
else
{:error, :wrong_format_idempotency_key} -> bad_input(conn, "Idempotency key should be UUID")
error -> error
end
```
Or handle `{:error, :wrong_format_idempotency_key}` in your `FallbackController`