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HyperLeger Fabric SDK development (5)-- event 1, introduction to event 1, introduction to event

The event package supports access to channel events on the Fabric network. The event client can receive block events, filter block events, chain code events and transaction status events.

Official documents:

Https://godoc.org/github.com/hyperledger/fabric-sdk-go/pkg/client/event

2. The basic process of using event

The basic process for using event is as follows:

A. prepare the channel client context

B. Create an event client

C, registration event

D, handling events (or timeouts)

E, logout event

Examples of use:

Ec, err: = New (mockChannelProvider ("mychannel") if err! = nil {fmt.Println ("failed to create client")} registration, notifier, err: = ec.RegisterChaincodeEvent ("examplecc", "event123") if err! = nil {fmt.Println ("failed to register chaincode event")} defer ec.Unregister (registration) select {case ccEvent: =

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