Pipelines are composed of tasks arranged in a DAG (directed acyclic graph). Pipelines are expressed in DOT syntax.
Each node in the graph is a task with a user-specified ID and a set of configuration parameters and attributes:
my_fetch_task [type="http" method=GET url="https://chain.link/eth_usd"]
The edges between tasks define how data flows from one task to the next. Some tasks can have multiple inputs, such as
median. Other tasks are limited to 0 (
http) or 1 (
data_source_1 [type="http" method=GET url="https://chain.link/eth_usd"] data_source_2 [type="http" method=GET url="https://coingecko.com/eth_usd"] medianize_data [type="median"] submit_to_ea [type="bridge" name="my_bridge"] data_source_1 -> medianize_data data_source_2 -> medianize_data medianize_data -> submit_to_ea