forked from TrueCloudLab/frostfs-node
48 lines
1.2 KiB
Go
48 lines
1.2 KiB
Go
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package object
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import (
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"context"
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)
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type (
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// requestPostProcessor is an interface of RPC call outcome handler.
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requestPostProcessor interface {
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// Performs actions based on the outcome of request processing.
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postProcess(context.Context, serviceRequest, error)
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}
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// complexPostProcessor is an implementation of requestPostProcessor interface.
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complexPostProcessor struct {
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// Sequence of requestPostProcessor instances.
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list []requestPostProcessor
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}
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)
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var _ requestPostProcessor = (*complexPostProcessor)(nil)
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// requestPostProcessor method implementation.
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//
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// Panics with pmEmptyServiceRequest on nil request argument.
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//
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// Passes request through the sequence of requestPostProcessor instances.
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//
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// Warn: adding instance to list itself provoke endless recursion.
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func (s *complexPostProcessor) postProcess(ctx context.Context, req serviceRequest, e error) {
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if req == nil {
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panic(pmEmptyServiceRequest)
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}
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for i := range s.list {
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s.list[i].postProcess(ctx, req, e)
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}
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}
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// Creates requestPostProcessor based on Params.
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//
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// Uses complexPostProcessor instance as a result implementation.
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func newPostProcessor() requestPostProcessor {
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return &complexPostProcessor{
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list: []requestPostProcessor{},
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}
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}
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