Add attaches tasks to the Runner. A task is a function that takes an int ID.

Get retreives an item identified by the passed id from the registry

writeStdout is used to write a system message directly to stdout.

NewTask initializes a new task based on a given work function.

Fetch returns a Fetcher for Items from domain.

STOPSUBSCRIPTION OMIT STARTSUBSCRIBE OMIT Subscribe returns a new Subscription that uses fetcher to fetch Items.

添加一个新的订阅者，订阅过滤器筛选后的主题

CatchPanic is used to catch any Panic and log exceptions to Stdout. It will also write the stack trace.

createTask returns an example task that sleeps for the specified number of seconds based on the id.

The second stage, sq, receives integers from a channel and returns a channel that emits the square of each received integer. After the inbound channel

New constructs a new Deadline with the given timeout.

Notify publishes new events to listeners. The method is not absolutely necessary, as each implementation could define this itself without losing funct

发布一个主题

The first stage, gen, is a function that converts a list of integers to a channel that emits the integers in the list. The gen function starts a gorou

makeRobotsSayHi is used for making robots say hi

The second stage, sq, receives integers from a channel and returns a channel that emits the square of each received integer. After the inbound channel

Acquire retrieves a resource from the pool. This method returns a resource from the pool if one is available, or creates a new one for the call.

ActiveRoutines will return the number of routines performing work.

error for timeout if need

关闭发布者对象，同时关闭所有的订阅者管道。