80 lines
2.1 KiB
Go
80 lines
2.1 KiB
Go
/*
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Copyright 2023 The Dapr Authors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package kitex
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import (
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"context"
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"sync"
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"github.com/dapr/components-contrib/bindings"
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"github.com/dapr/kit/logger"
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)
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type kitexOutputBinding struct {
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ctxCache map[string]*kitexContext
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cacheLock sync.RWMutex
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logger logger.Logger
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}
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func NewKitexOutput(logger logger.Logger) bindings.OutputBinding {
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return &kitexOutputBinding{
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ctxCache: make(map[string]*kitexContext),
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logger: logger,
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}
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}
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func (out *kitexOutputBinding) Init(_ context.Context, _ bindings.Metadata) error {
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return nil
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}
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func (out *kitexOutputBinding) Invoke(ctx context.Context, req *bindings.InvokeRequest) (*bindings.InvokeResponse, error) {
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var (
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kitexContextCache *kitexContext
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ok bool
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finalResult = &bindings.InvokeResponse{}
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)
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kitexCtx := newKitexContext(req.Metadata)
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kitexCtxKey := kitexCtx.String()
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out.cacheLock.RLock()
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if kitexContextCache, ok = out.ctxCache[kitexCtxKey]; !ok {
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out.cacheLock.RUnlock()
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out.cacheLock.Lock()
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if kitexContextCache, ok = out.ctxCache[kitexCtxKey]; !ok {
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if err := kitexCtx.Init(req.Metadata); err != nil {
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out.cacheLock.Unlock()
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return finalResult, err
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}
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out.ctxCache[kitexCtxKey] = kitexCtx
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kitexContextCache = kitexCtx
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}
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out.cacheLock.Unlock()
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} else {
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out.cacheLock.RUnlock()
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}
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rsp, err := kitexContextCache.Invoke(ctx, req.Data)
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if data, ok := rsp.([]byte); ok {
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finalResult.Data = data
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}
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return finalResult, err
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}
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func (out *kitexOutputBinding) Operations() []bindings.OperationKind {
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return []bindings.OperationKind{bindings.GetOperation}
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}
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