/
client.go
156 lines (138 loc) · 4.26 KB
/
client.go
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// Copyright (c) Mainflux
// SPDX-License-Identifier: Apache-2.0
// Adapted for Orb project, modifications licensed under MPL v. 2.0:
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
package grpc
import (
"context"
"github.com/go-kit/kit/endpoint"
kitot "github.com/go-kit/kit/tracing/opentracing"
kitgrpc "github.com/go-kit/kit/transport/grpc"
"github.com/opentracing/opentracing-go"
"github.com/orb-community/orb/sinks/pb"
"go.uber.org/zap"
"google.golang.org/grpc"
"time"
)
var _ pb.SinkServiceClient = (*grpcClient)(nil)
type grpcClient struct {
logger *zap.Logger
timeout time.Duration
retrieveSink endpoint.Endpoint
retrieveSinks endpoint.Endpoint
}
func (client grpcClient) RetrieveSinks(ctx context.Context, in *pb.SinksFilterReq, _ ...grpc.CallOption) (*pb.SinksRes, error) {
ctx, cancel := context.WithTimeout(ctx, client.timeout)
defer cancel()
sinksFilter := sinksFilter{
isOtel: in.OtelEnabled,
}
res, err := client.retrieveSinks(ctx, sinksFilter)
if err != nil {
client.logger.Error("error during retrieve sinks", zap.Error(err))
return nil, err
}
ir := res.(sinksRes)
sinkList := make([]*pb.SinkRes, len(ir.sinks))
for i, sinkResponse := range ir.sinks {
sinkList[i] = &pb.SinkRes{
Id: sinkResponse.id,
OwnerID: sinkResponse.mfOwnerId,
Name: sinkResponse.name,
Description: sinkResponse.description,
Tags: sinkResponse.tags,
State: sinkResponse.state,
Error: sinkResponse.error,
Backend: sinkResponse.backend,
Config: sinkResponse.config,
}
}
return &pb.SinksRes{Sinks: sinkList}, nil
}
func (client grpcClient) RetrieveSink(ctx context.Context, in *pb.SinkByIDReq, _ ...grpc.CallOption) (*pb.SinkRes, error) {
ctx, cancel := context.WithTimeout(ctx, client.timeout)
defer cancel()
ar := accessByIDReq{
SinkID: in.SinkID,
OwnerID: in.OwnerID,
}
res, err := client.retrieveSink(ctx, ar)
if err != nil {
return nil, err
}
ir := res.(sinkRes)
return &pb.SinkRes{
Id: ir.id,
Name: ir.name,
Description: ir.description,
Tags: ir.tags,
State: ir.state,
Error: ir.error,
Backend: ir.backend,
Config: ir.config,
}, nil
}
func NewClient(tracer opentracing.Tracer, conn *grpc.ClientConn, timeout time.Duration, logger *zap.Logger) pb.SinkServiceClient {
svcName := "sinks.SinkService"
return &grpcClient{
logger: logger,
timeout: timeout,
retrieveSink: kitot.TraceClient(tracer, "retrieve_sink")(kitgrpc.NewClient(
conn,
svcName,
"RetrieveSink",
encodeRetrieveSinkRequest,
decodeSinkResponse,
pb.SinkRes{},
).Endpoint()),
retrieveSinks: kitot.TraceClient(tracer, "retrieve_sinks_internal")(kitgrpc.NewClient(
conn,
svcName,
"RetrieveSinks",
encodeRetrieveSinksRequest,
decodeSinksResponse,
pb.SinksRes{},
).Endpoint()),
}
}
func encodeRetrieveSinksRequest(_ context.Context, grpcReq interface{}) (interface{}, error) {
req := grpcReq.(sinksFilter)
return &pb.SinksFilterReq{OtelEnabled: req.isOtel}, nil
}
func decodeSinksResponse(_ context.Context, grpcRes interface{}) (interface{}, error) {
res := grpcRes.(*pb.SinksRes)
sinkList := make([]sinkRes, len(res.Sinks))
for i, sink := range res.Sinks {
sinkList[i] = sinkRes{
id: sink.Id,
mfOwnerId: sink.OwnerID,
name: sink.Name,
description: sink.Description,
tags: sink.Tags,
state: sink.State,
error: sink.Error,
backend: sink.Backend,
config: sink.Config,
}
}
return sinksRes{sinks: sinkList}, nil
}
func encodeRetrieveSinkRequest(_ context.Context, grpcReq interface{}) (interface{}, error) {
req := grpcReq.(accessByIDReq)
return &pb.SinkByIDReq{SinkID: req.SinkID, OwnerID: req.OwnerID}, nil
}
func decodeSinkResponse(_ context.Context, grpcRes interface{}) (interface{}, error) {
res := grpcRes.(*pb.SinkRes)
return sinkRes{
id: res.GetId(),
name: res.GetName(),
description: res.GetDescription(),
tags: res.GetTags(),
state: res.GetState(),
error: res.GetError(),
backend: res.GetBackend(),
config: res.GetConfig(),
}, nil
}