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28 lines
1.0 KiB
Go
28 lines
1.0 KiB
Go
package server
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import (
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"context"
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)
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// HandlerFunc represents a single method of a handler. It's used primarily
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// for the wrappers. What's handed to the actual method is the concrete
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// request and response types.
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type HandlerFunc func(ctx context.Context, req Request, rsp interface{}) error
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// SubscriberFunc represents a single method of a subscriber. It's used primarily
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// for the wrappers. What's handed to the actual method is the concrete
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// publication message.
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type SubscriberFunc func(ctx context.Context, msg Message) error
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// HandlerWrapper wraps the HandlerFunc and returns the equivalent.
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type HandlerWrapper func(HandlerFunc) HandlerFunc
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// SubscriberWrapper wraps the SubscriberFunc and returns the equivalent.
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type SubscriberWrapper func(SubscriberFunc) SubscriberFunc
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// StreamWrapper wraps a Stream interface and returns the equivalent.
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// Because streams exist for the lifetime of a method invocation this
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// is a convenient way to wrap a Stream as its in use for trace, monitoring,
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// metrics, etc.
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type StreamWrapper func(Stream) Stream
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