87 lines
2.4 KiB
Go
87 lines
2.4 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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"fmt"
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"github.com/cloudwego/kitex/client"
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"github.com/cloudwego/kitex/client/genericclient"
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"github.com/cloudwego/kitex/pkg/generic"
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)
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const (
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metadataRPCMethodName = "methodName"
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metadataRPCDestService = "destService"
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metadataRPCHostports = "hostPorts"
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metadataRPCVersion = "version"
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)
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type kitexContext struct {
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version string
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destService string
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hostPorts string
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method string
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client genericclient.Client
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}
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func newKitexContext(metadata map[string]string) *kitexContext {
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kitexMetadata := &kitexContext{
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version: metadata[metadataRPCVersion],
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destService: metadata[metadataRPCDestService],
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hostPorts: metadata[metadataRPCHostports],
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method: metadata[metadataRPCMethodName],
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}
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return kitexMetadata
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}
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func (d *kitexContext) Init(metadata map[string]string) error {
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var destService, hostPorts string
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destService, ok := metadata[metadataRPCDestService]
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if !ok {
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return fmt.Errorf("missing metadata field %s", metadataRPCDestService)
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}
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hostPorts, ok = metadata[metadataRPCHostports]
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if !ok {
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return fmt.Errorf("missing metadata field %s", metadataRPCHostports)
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}
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_, ok = metadata[metadataRPCMethodName]
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if !ok {
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return fmt.Errorf("missing metadata field %s", metadataRPCMethodName)
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}
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genericCli, err := genericclient.NewClient(destService, generic.BinaryThriftGeneric(), client.WithHostPorts(hostPorts))
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if err != nil {
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return fmt.Errorf("create a kitex generic client err %w", err)
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}
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d.client = genericCli
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return nil
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}
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func (d *kitexContext) Invoke(ctx context.Context, body []byte) (interface{}, error) {
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resp, err := d.client.GenericCall(ctx, d.method, body)
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if err != nil {
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return nil, err
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}
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return resp, nil
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}
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func (d *kitexContext) String() string {
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return d.version + "." + d.destService + "." + d.method + "." + d.hostPorts
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}
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