X-Git-Url: https://gerrit.automotivelinux.org/gerrit/gitweb?a=blobdiff_plain;f=old-docs%2Fafb-daemon-vocabulary.md;fp=old-docs%2Fafb-daemon-vocabulary.md;h=c3b7c1ea5585de3ed82aca6437e597d5fd4e2452;hb=f6bc48698587758fb764bae66302002fe148e978;hp=0000000000000000000000000000000000000000;hpb=279ac0a77b8689c71812af2e5e67ee9b6e4994ff;p=src%2Fapp-framework-binder.git diff --git a/old-docs/afb-daemon-vocabulary.md b/old-docs/afb-daemon-vocabulary.md new file mode 100644 index 00000000..c3b7c1ea --- /dev/null +++ b/old-docs/afb-daemon-vocabulary.md @@ -0,0 +1,98 @@ + +Vocabulary for AFB-DAEMON +========================= + +## Binding + +A shared library object intended to add a functionality to an afb-daemon +instance. It implements an API and may provide a service. + +Binding made for services can have specific entry point called after +initialisation and before serving. + +## Event + +Message with data propagated from the services to the client and not expecting +any reply. + +The current implementation allows to widely broadcast events to all clients. + +## Level of assurance (LOA) + +This level that can be from 0 to 3 represent the level of +assurance that the services can expect from the session. + +The exact definition of the meaning of these levels and how to use it remains to +be achieved. + +## Plugin + +Old name for binding, see binding. + +## Request + +A request is an invocation by a client to a binding method using a message +transferred through some protocol: HTTP, WebSocket, DBUS... and served by +***afb-daemon*** + +## Reply/Response + +This is a message sent to client as the result of the request. + +## Service + +Service are made of bindings running by their side on their binder. +It can serve many client. Each one attached to one session. + +The framework establishes connection between the services and +the clients. Using DBus currently but other protocols are considered. + +## Session + +A session is meant to be the unique instance context of a client, +which identify that instance across requests. + +Each session has an identifier. Session identifier generated by afb-daemon are +UUIDs. + +Internally, afb-daemon offers a mechanism to attach data to sessions. +When the session is closed or disappears, the data attached to that session +are freed. + +## Token + +The token is an identifier that the client must give to be authenticated. + +At start, afb-daemon get an initial token. This initial token must be presented +by incoming client to be authenticated. + +A token is valid only for a period. + +The token must be renewed periodically. When the token is renewed, afb-daemon +sends the new token to the client. + +Tokens generated by afb-daemon are UUIDs. + +## UUID + +It stand for Universal Unique IDentifier. + +It is designed to create identifier in a way that avoid has much as possible +conflicts. It means that if two different instances create an UUID, the +probability that they create the same UUID is very low, near to zero. + +## x-afb-reqid + +Argument name that can be used with HTTP request. When this argument is given, +it is automatically added to the "request" object of the answer. + +## x-afb-token + +Argument name meant to give the token without ambiguity. +You can also use the name **token** but it may conflicts with others arguments. + +## x-afb-uuid + +Argument name for giving explicitly the session identifier without ambiguity. +You can also use the name **uuid** but it may conflicts with others arguments. +