mirror of https://github.com/poanetwork/quorum.git
27 lines
849 B
Go
27 lines
849 B
Go
|
// Contains the external API side message filter for watching, pooling and polling
|
||
|
// matched whisper messages.
|
||
|
|
||
|
package xeth
|
||
|
|
||
|
import "time"
|
||
|
|
||
|
// whisperFilter is the message cache matching a specific filter, accumulating
|
||
|
// inbound messages until the are requested by the client.
|
||
|
type whisperFilter struct {
|
||
|
id int // Filter identifier
|
||
|
cache []WhisperMessage // Cache of messages not yet polled
|
||
|
timeout time.Time // Time when the last message batch was queries
|
||
|
}
|
||
|
|
||
|
// insert injects a new batch of messages into the filter cache.
|
||
|
func (w *whisperFilter) insert(msgs ...WhisperMessage) {
|
||
|
w.cache = append(w.cache, msgs...)
|
||
|
}
|
||
|
|
||
|
// retrieve fetches all the cached messages from the filter.
|
||
|
func (w *whisperFilter) retrieve() (messages []WhisperMessage) {
|
||
|
messages, w.cache = w.cache, nil
|
||
|
w.timeout = time.Now()
|
||
|
return
|
||
|
}
|