HEPTAconnect is focused on modularity. Different packages can be bundled together to adapt it to your needs. That is why a single adapter to an external system is organized in a dedicated package. These packages are called portals. A portal consists of three main components to comply with the HEPTAconnect ecosystem: Explorers, emitters and receivers.
Those three component types are explained in more detail on their respective documentation pages. Here is a brief explanation of the flow of data through HEPTAconnect:
All of these components connect to their respective portal's data source. The explorer publishes every object to HEPTAconnect (creating a mapping for each of them). In the next step HEPTAconnect will pass these mappings to an emitter for it to read the entire object and construct a data set entity. This object is then passed to the receiver of another portal where it is then written to the data source.
A portals job is to register its components and to provide services that are unique for it. Those services e.g. can be a custom API client or a service that can access data inside a static file. You can create a portal by implementing PortalContract and referencing your portal class in the extra section of your packages composer.json like this:
It is required for your package's composer.json to include the keyword
heptaconnect-portal. This is the way to let HEPTAconnect know it should take a look at the extra section of your package.
HEPTAconnect is split into different packages to provide great modularity. As a result your portal package only needs a single composer dependency to be functional:
heptacom/heptaconnect-portal-base. This package provides you with all the contracts, structs and services that are relevant for portals while maintaining full system agnosticism.