Documentation
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Overview ¶
Package responseassembler assembles responses that are queued for sending in outgoing messages
The response assembler's Transaction method allows a caller to specify response actions that will go into a single libp2p2 message. The response assembler will also deduplicate blocks that have already been sent over the network in a previous message
Index ¶
Constants ¶
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Variables ¶
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Functions ¶
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Types ¶
type PeerMessageHandler ¶
type PeerMessageHandler interface {
AllocateAndBuildMessage(p peer.ID, blkSize uint64, buildResponseFn func(*messagequeue.Builder))
}
PeerMessageHandler is an interface that can queue a response for a given peer to go out over the network If blkSize > 0, message building may block until enough memory has been freed from the queues to allocate the message.
type ResponseAssembler ¶
type ResponseAssembler struct {
*peermanager.PeerManager
// contains filtered or unexported fields
}
ResponseAssembler manages assembling responses to go out over the network in libp2p messages
func New ¶
func New(ctx context.Context, peerHandler PeerMessageHandler) *ResponseAssembler
New generates a new ResponseAssembler for sending responses
func (*ResponseAssembler) NewStream ¶
func (ra *ResponseAssembler) NewStream(ctx context.Context, p peer.ID, requestID graphsync.RequestID, subscriber notifications.Subscriber) ResponseStream
type ResponseBuilder ¶
type ResponseBuilder interface {
// SendResponse adds a response to this transaction.
SendResponse(
link ipld.Link,
data []byte,
) graphsync.BlockData
// SendExtensionData adds extension data to the transaction.
SendExtensionData(graphsync.ExtensionData)
// SendUpdates sets up a PartialResponse with just the extension data provided
SendUpdates([]graphsync.ExtensionData)
// FinishRequest completes the response to a request.
FinishRequest() graphsync.ResponseStatusCode
// FinishWithError end the response due to an error
FinishWithError(status graphsync.ResponseStatusCode)
// PauseRequest temporarily halts responding to the request
PauseRequest()
// Context returns the execution context for this transaction
Context() context.Context
}
ResponseBuilder is a limited interface for assembling responses inside a transaction, so that they are included in the same message on the protocol
type ResponseStream ¶
type ResponseStream interface {
Transaction(transaction Transaction) error
DedupKey(key string)
IgnoreBlocks(links []ipld.Link)
SkipFirstBlocks(skipFirstBlocks int64)
// ClearRequest removes all tracking for this request.
ClearRequest()
}
type Transaction ¶
type Transaction func(ResponseBuilder) error
Transaction is a series of operations that should be send together in a single response
Source Files