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new HTTPClient interface for subscriptions

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This commit is contained in:
Anton Kaliaev
2019-02-07 18:53:59 +04:00
parent 0cddfdc81d
commit 3966988bcc
4 changed files with 100 additions and 83 deletions
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17
rpc/client/interface.go
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@ -21,6 +21,8 @@ implementation.
*/
import (
"context"
cmn "github.com/tendermint/tendermint/libs/common"
ctypes "github.com/tendermint/tendermint/rpc/core/types"
"github.com/tendermint/tendermint/types"
@ -88,10 +90,23 @@ type NetworkClient interface {
Health() (*ctypes.ResultHealth, error)
}
// EventCallback is used by Subscribe to deliver events.
type EventCallback func(event *ctypes.ResultEvent, err error)
// EventsClient is reactive, you can subscribe to any message, given the proper
// string. see tendermint/types/events.go
type EventsClient interface {
types.EventBusSubscriber
// Subscribe subscribes given subscriber to query. When a matching event is
// published, callback is called (err is nil). When/if subscription is
// terminated, callback is called again with non-nil error.
//
// ctx cannot be used to unsubscribe. To unsubscribe, use either Unsubscribe
// or UnsubscribeAll.
Subscribe(ctx context.Context, subscriber, query string, callback EventCallback) error
// Unsubscribe unsubscribes given subscriber from query.
Unsubscribe(ctx context.Context, subscriber, query string) error
// UnsubscribeAll unsubscribes given subscriber from all the queries.
UnsubscribeAll(ctx context.Context, subscriber string) error
}
// MempoolClient shows us data about current mempool state.