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| -rw-r--r-- | docs/development/actors/overview.rst | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/docs/development/actors/overview.rst b/docs/development/actors/overview.rst index b9c24cec..f1ca0d68 100644 --- a/docs/development/actors/overview.rst +++ b/docs/development/actors/overview.rst @@ -63,6 +63,11 @@ Actor are loaded first. If a later actor has the same name as one that has already been loaded, a warning will be generated and the later actor discarded. This makes it possible for an organization to override an actor implementation +- An implementation for a specific Actor will typically be derived from + *HttpActor* or *BidirectionalTopicActor*, depending whether it is HTTP/REST-based + or DMaaP-topic-based. These super classes provide most of the functionality needed + to configure the operators, extracting operator-specific properties and adding + default, actor-level properties Operator ******** @@ -84,8 +89,13 @@ Operation and then continue; the invoker need not deal with the dependency - Subclasses will typically derive from *HttpOperation* or *BidirectionalTopicOperation*, though if neither of those suffice, then they can extend *OperationPartial*, or - even just implement a raw *Operation* -- Operation subclasses should be written in a way so-as to avoid any blocking I/O + even just implement a raw *Operation*. *OperationPartial* is the super class of + *HttpOperation* and *BidirectionalTopicOperation* and provides most of the methods + used by the Operation subclasses, including a number of utility methods (e.g., + cancellable *allOf*) +- Operation subclasses should be written in a way so-as to avoid any blocking I/O. If + this proves too difficult, then the implementation should override *doOperation()* + instead of *startOperationAsync()* - Operations return a "future" when *start()* is invoked. Typically, if the "future" is canceled, then any outstanding operation should be canceled. For instance, HTTP connections should be closed without waiting for a response |