Part of twisted.protocols.pcp View Source View In Hierarchy
Known subclasses: twisted.protocols.pcp.ProducerConsumerProxy
Implements interfaces: twisted.internet.interfaces.IConsumer, twisted.internet.interfaces.IProducer
| Instance Variable | producer | the Producer I subscribe to. (type: IProducer) |
| Instance Variable | consumer | the Consumer I publish to. (type: IConsumer) |
| Instance Variable | paused | As a Producer, am I paused? (type: bool) |
| Method | __init__ | Undocumented |
| Method | pauseProducing | Undocumented |
| Method | resumeProducing | Undocumented |
| Method | stopProducing | Stop producing data. |
| Method | write | The producer will write data by calling this method. |
| Method | finish | Undocumented |
| Method | registerProducer | Register to receive data from a producer. |
| Method | unregisterProducer | Stop consuming data from a producer, without disconnecting. |
| Method | __repr__ | Undocumented |
This tells a producer that its consumer has died, so it must stop producing data for good.
The implementation must be non-blocking and perform whatever buffering
is necessary. If the producer has provided enough data for now and it is a
IPushProducer,
the consumer may call its pauseProducing method.
This sets self to be a consumer for a producer. When this object runs out of data (as when a send(2) call on a socket succeeds in moving the last data from a userspace buffer into a kernelspace buffer), it will ask the producer to resumeProducing().
For IPullProducer
providers, resumeProducing will be called once each time data
is required.
For IPushProducer
providers, pauseProducing will be called whenever the write
buffer fills up and resumeProducing will only be called when
it empties.
| Parameters | streaming | True if producer provides IPushProducer,
False if producer provides IPullProducer. (type: bool) |
| Returns | None | |
| Raises | RuntimeError | If a producer is already registered. |