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https://github.com/rookie-ninja/rk-grpc

Start gRPC microservice from YAML, plugin of rk-boot
https://github.com/rookie-ninja/rk-grpc

bootstrapper golang grpc interceptor opentracing rk swagger

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Start gRPC microservice from YAML, plugin of rk-boot

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rk-grpc



Inject middlewares & server configuration of gRPC and grpc-gateway from YAML file.



This belongs to rk-boot family. We suggest use this lib with rk-boot.











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## Architecture
![image](docs/img/grpc-arch.png)

## Quick Start
In the bellow example, we will start microservice with bellow functionality and middlewares enabled via YAML.

- [gRPC](https://grpc.io/docs/languages/go/) and [grpc-gateway](https://github.com/grpc-ecosystem/grpc-gateway) server
- [gRPC](https://grpc.io/docs/languages/go/) server reflection
- Swagger UI
- CommonService
- Docs
- Prometheus Metrics (middleware)
- Logging (middleware)
- Meta (middleware)

Please refer example at [example/boot/simple](example/boot/simple).

### Installation

```shell
go get github.com/rookie-ninja/rk-grpc/v2
```

### 1.Prepare .proto files

show

- api/v1/greeter.proto

```protobuf
syntax = "proto3";

package api.v1;

option go_package = "api/v1/greeter";

service Greeter {
rpc Greeter (GreeterRequest) returns (GreeterResponse) {}
}

message GreeterRequest {
bytes msg = 1;
}

message GreeterResponse {}
```

- api/v1/gw_mapping.yaml

```yaml
type: google.api.Service
config_version: 3

# Please refer google.api.Http in https://github.com/googleapis/googleapis/blob/master/google/api/http.proto file for details.
http:
rules:
- selector: api.v1.Greeter.Greeter
get: /v1/greeter
```

- buf.yaml

```yaml
version: v1beta1
name: github.com/rk-dev/rk-boot
build:
roots:
- api
```

- buf.gen.yaml

```yaml
version: v1beta1
plugins:
# protoc-gen-go needs to be installed, generate go files based on proto files
- name: go
out: api/gen
opt:
- paths=source_relative
# protoc-gen-go-grpc needs to be installed, generate grpc go files based on proto files
- name: go-grpc
out: api/gen
opt:
- paths=source_relative
- require_unimplemented_servers=false
# protoc-gen-grpc-gateway needs to be installed, generate grpc-gateway go files based on proto files
- name: grpc-gateway
out: api/gen
opt:
- paths=source_relative
- grpc_api_configuration=api/v1/gw_mapping.yaml
# protoc-gen-openapiv2 needs to be installed, generate swagger config files based on proto files
- name: openapiv2
out: api/gen
opt:
- grpc_api_configuration=api/v1/gw_mapping.yaml
```

### 2.Generate .pb.go files with [buf](https://docs.buf.build/introduction)

show

```
$ buf generate --path api/v1
```

```
.
├── api
│ ├── gen
│ │ └── v1
│ │ ├── greeter.pb.go
│ │ ├── greeter.pb.gw.go
│ │ ├── greeter.swagger.json
│ │ └── greeter_grpc.pb.go
│ └── v1
│ ├── greeter.proto
│ └── gw_mapping.yaml
├── boot.yaml
├── buf.gen.yaml
├── buf.yaml
├── go.mod
├── go.sum
└── main.go
```

### 3.Create boot.yaml

show

```yaml
---
grpc:
- name: greeter # Required
port: 8080 # Required
enabled: true # Required
enableReflection: true # Optional, default: false
enableRkGwOption: true # Optional, default: false
commonService:
enabled: true # Optional, default: false
docs:
enabled: true # Optional, default: false
sw:
enabled: true # Optional, default: false
prom:
enabled: true # Optional, default: false
middleware:
logging:
enabled: true # Optional, default: false
prom:
enabled: true # Optional, default: false
meta:
enabled: true # Optional, default: false
```

### 4.Create main.go

show

```go
// Copyright (c) 2021 rookie-ninja
//
// Use of this source code is governed by an Apache-style
// license that can be found in the LICENSE file.
package main

import (
"context"
"embed"
_ "embed"
"github.com/rookie-ninja/rk-entry/v2/entry"
"github.com/rookie-ninja/rk-grpc/v2/boot"
proto "github.com/rookie-ninja/rk-grpc/v2/example/boot/simple/api/gen/v1"
"google.golang.org/grpc"
)

//go:embed boot.yaml
var boot []byte

//go:embed api/gen/v1
var docsFS embed.FS

//go:embed api/gen/v1
var staticFS embed.FS

func init() {
rkentry.GlobalAppCtx.AddEmbedFS(rkentry.DocsEntryType, "greeter", &docsFS)
rkentry.GlobalAppCtx.AddEmbedFS(rkentry.SWEntryType, "greeter", &docsFS)
rkentry.GlobalAppCtx.AddEmbedFS(rkentry.StaticFileHandlerEntryType, "greeter", &staticFS)
}

func main() {
// Bootstrap basic entries from boot config.
rkentry.BootstrapPreloadEntryYAML(boot)

// Bootstrap grpc entry from boot config
res := rkgrpc.RegisterGrpcEntryYAML(boot)

// Get GrpcEntry
grpcEntry := res["greeter"].(*rkgrpc.GrpcEntry)
// Register gRPC server
grpcEntry.AddRegFuncGrpc(func(server *grpc.Server) {
proto.RegisterGreeterServer(server, &GreeterServer{})
})
// Register grpc-gateway func
grpcEntry.AddRegFuncGw(proto.RegisterGreeterHandlerFromEndpoint)

// Bootstrap grpc entry
grpcEntry.Bootstrap(context.Background())

// Wait for shutdown signal
rkentry.GlobalAppCtx.WaitForShutdownSig()

// Interrupt gin entry
grpcEntry.Interrupt(context.Background())
}

// GreeterServer Implementation of GreeterServer.
type GreeterServer struct{}

// Greeter Handle Greeter method.
func (server *GreeterServer) Greeter(context.Context, *proto.GreeterRequest) (*proto.GreeterResponse, error) {
return &proto.GreeterResponse{}, nil
}
```

### 5.Start server
```
$ go run main.go
```

### 6.Validation

show

#### 6.1 gRPC & grpc-gateway server
Try to test [gRPC](https://grpc.io/docs/languages/go/) & [grpc-gateway](https://github.com/grpc-ecosystem/grpc-gateway) Service with [curl](https://curl.se/) & [grpcurl](https://github.com/fullstorydev/grpcurl)

```shell script
# Curl to common service
$ curl localhost:8080/rk/v1/ready
{"ready":true}
```

#### 6.2 Swagger UI
Please refer **sw** section at [Full YAML](#full-yaml).

By default, we could access swagger UI at [http://localhost:8080/sw](http://localhost:8080/sw)

![sw](docs/img/simple-sw.png)

#### 6.3 Docs UI
Please refer **docs** section at [Full YAML](#full-yaml).

By default, we could access docs UI at [http://localhost:8080/docs](http://localhost:8080/docs)

![docs](docs/img/simple-docs.png)

#### 6.4 Prometheus Metrics
Please refer **middleware.prom** section at [Full YAML](#full-yaml).

By default, we could access prometheus client at [http://localhost:8080/metrics](http://localhost:8080/metrics)

![prom](docs/img/simple-prom.png)

#### 6.5 Logging
Please refer **middleware.logging** section at [Full YAML](#full-yaml).

By default, we enable zap logger and event logger with encoding type of [console]. Encoding type of [json] and [flatten] is also supported.

```shell script
2021-12-28T05:36:21.561+0800 INFO boot/grpc_entry.go:1515 Bootstrap grpcEntry {"eventId": "db2c977c-e0ff-4b21-bc0d-5966f1cad093", "entryName": "greeter"}
------------------------------------------------------------------------
endTime=2021-12-28T05:36:21.563575+08:00
startTime=2021-12-28T05:36:21.561362+08:00
elapsedNano=2213846
timezone=CST
ids={"eventId":"db2c977c-e0ff-4b21-bc0d-5966f1cad093"}
app={"appName":"rk","appVersion":"","entryName":"greeter","entryType":"GrpcEntry"}
env={"arch":"amd64","az":"*","domain":"*","hostname":"lark.local","localIP":"10.8.0.2","os":"darwin","realm":"*","region":"*"}
payloads={"commonServiceEnabled":true,"commonServicePathPrefix":"/rk/v1/","grpcPort":8080,"gwPort":8080,"promEnabled":true,"promPath":"/metrics","promPort":8080,"swEnabled":true,"swPath":"/sw/","tvEnabled":true,"tvPath":"/rk/v1/tv/"}
error={}
counters={}
pairs={}
timing={}
remoteAddr=localhost
operation=Bootstrap
resCode=OK
eventStatus=Ended
EOE
```

#### 6.6 Meta
Please refer **meta** section at [Full YAML](#full-yaml).

By default, we will send back some metadata to client with headers.

```shell script
$ curl -vs localhost:8080/rk/v1/ready
...
< HTTP/1.1 200 OK
< Content-Type: application/json
< X-Request-Id: 7e4f5ac5-3369-485f-89f7-55551cc4a9a1
< X-Rk-App-Name: rk
< X-Rk-App-Unix-Time: 2021-12-28T05:39:50.508328+08:00
< X-Rk-App-Version:
< X-Rk-Received-Time: 2021-12-28T05:39:50.508328+08:00
< Date: Mon, 27 Dec 2021 21:39:50 GMT
...
```

#### 6.7 Send request
We registered /v1/greeter API in [grpc-gateway](https://github.com/grpc-ecosystem/grpc-gateway) server and let's validate it!

```shell script
$ curl -vs localhost:8080/v1/greeter
* Trying ::1...
* TCP_NODELAY set
* Connection failed
* connect to ::1 port 8080 failed: Connection refused
* Trying 127.0.0.1...
* TCP_NODELAY set
* Connected to localhost (127.0.0.1) port 8080 (#0)
> GET /v1/greeter HTTP/1.1
> Host: localhost:8080
> User-Agent: curl/7.64.1
> Accept: */*
>
< HTTP/1.1 200 OK
< Content-Type: application/json
< X-Request-Id: 07b0fbf6-cebf-40ac-84a2-533bbd4b8958
< X-Rk-App-Name: rk
< X-Rk-App-Unix-Time: 2021-12-28T05:41:04.653652+08:00
< X-Rk-App-Version:
< X-Rk-Received-Time: 2021-12-28T05:41:04.653652+08:00
< Date: Mon, 27 Dec 2021 21:41:04 GMT
< Content-Length: 2
<
* Connection #0 to host localhost left intact
{}
```

We registered api.v1.Greeter.Greeter API in [gRPC](https://grpc.io/docs/languages/go/) server and let's validate it!

```shell script
$ grpcurl -plaintext localhost:8080 api.v1.Greeter.Greeter
{}
```

#### 6.8 RPC logs
Bellow logs would be printed in stdout.

The first block of log is from [grpc-gateway](https://github.com/grpc-ecosystem/grpc-gateway) request.

The second block of log is from [gRPC](https://grpc.io/docs/languages/go/) request.

```
------------------------------------------------------------------------
endTime=2021-12-28T05:45:52.986041+08:00
startTime=2021-12-28T05:45:52.985956+08:00
elapsedNano=85065
timezone=CST
ids={"eventId":"88362f69-7eda-4f03-bdbe-7ef667d06bac","requestId":"88362f69-7eda-4f03-bdbe-7ef667d06bac"}
app={"appName":"rk","appVersion":"","entryName":"greeter","entryType":"GrpcEntry"}
env={"arch":"amd64","az":"*","domain":"*","hostname":"lark.local","localIP":"10.8.0.2","os":"darwin","realm":"*","region":"*"}
payloads={"grpcMethod":"Greeter","grpcService":"api.v1.Greeter","grpcType":"unaryServer","gwMethod":"GET","gwPath":"/v1/greeter","gwScheme":"http","gwUserAgent":"curl/7.64.1"}
error={}
counters={}
pairs={}
timing={}
remoteAddr=127.0.0.1:61520
operation=/api.v1.Greeter/Greeter
resCode=OK
eventStatus=Ended
EOE
------------------------------------------------------------------------
endTime=2021-12-28T05:44:45.686734+08:00
startTime=2021-12-28T05:44:45.686592+08:00
elapsedNano=141716
timezone=CST
ids={"eventId":"7765862c-9e83-443a-a6e5-bb28f17f8ea0","requestId":"7765862c-9e83-443a-a6e5-bb28f17f8ea0"}
app={"appName":"rk","appVersion":"","entryName":"greeter","entryType":"GrpcEntry"}
env={"arch":"amd64","az":"*","domain":"*","hostname":"lark.local","localIP":"10.8.0.2","os":"darwin","realm":"*","region":"*"}
payloads={"grpcMethod":"Greeter","grpcService":"api.v1.Greeter","grpcType":"unaryServer","gwMethod":"","gwPath":"","gwScheme":"","gwUserAgent":""}
error={}
counters={}
pairs={}
timing={}
remoteAddr=127.0.0.1:57149
operation=/api.v1.Greeter/Greeter
resCode=OK
eventStatus=Ended
EOE
```

#### 6.9 RPC prometheus metrics
Prometheus client will automatically register into [grpc-gateway](https://github.com/grpc-ecosystem/grpc-gateway) instance at /metrics.

Access [http://localhost:8080/metrics](http://localhost:8080/metrics)

![image](docs/img/prom-inter.png)

## Supported features
**User can enable anyone of those as needed! No mandatory binding!**

| Instance | Description |
|------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------|
| [gRPC](https://grpc.io/docs/languages/go/) | [gRPC](https://grpc.io/docs/languages/go/) defined with protocol buffer. |
| [gRPC](https://grpc.io/docs/languages/go/) proxy | Proxy gRPC request to another gRPC server. |
| [grpc-gateway](https://github.com/grpc-ecosystem/grpc-gateway) | [grpc-gateway](https://github.com/grpc-ecosystem/grpc-gateway) service with same port. |
| [grpc-gateway](https://github.com/grpc-ecosystem/grpc-gateway) options | Well defined [grpc-gateway](https://github.com/grpc-ecosystem/grpc-gateway) options. |
| Config | Configure [spf13/viper](https://github.com/spf13/viper) as config instance and reference it from YAML |
| Logger | Configure [uber-go/zap](https://github.com/uber-go/zap) logger configuration and reference it from YAML |
| Event | Configure logging of RPC with [rk-query](https://github.com/rookie-ninja/rk-query) and reference it from YAML |
| Cert | Fetch TLS/SSL certificates from remote datastore like ETCD and start microservice. |
| Prometheus | Start prometheus client at client side and push metrics to [pushgateway](https://github.com/prometheus/pushgateway) as needed. |
| Swagger | Builtin swagger UI handler. |
| Docs | Builtin [RapiDoc](https://github.com/mrin9/RapiDoc) instance which can be used to replace swagger and RK TV. |
| CommonService | List of common APIs. |
| StaticFileHandler | A Web UI shows files could be downloaded from server, currently support source of local and embed.FS. |
| PProf | PProf web UI. |
| gRPC Web | gRPC Web |

## Supported middlewares
All middlewares could be configured via YAML or Code.

**User can enable anyone of those as needed! No mandatory binding!**

| Middleware | Description |
|------------|-------------------------------------------------------------------------------------------------------------------------------------------------------|
| Metrics | Collect RPC metrics and export to [prometheus](https://github.com/prometheus/client_golang) client. |
| Log | Log every RPC requests as event with [rk-query](https://github.com/rookie-ninja/rk-query). |
| Trace | Collect RPC trace and export it to stdout, file or jaeger with [open-telemetry/opentelemetry-go](https://github.com/open-telemetry/opentelemetry-go). |
| Panic | Recover from panic for RPC requests and log it. |
| Meta | Send micsroservice metadata as header to client. |
| Auth | Support [Basic Auth] and [API Key] authorization types. |
| RateLimit | Limiting RPC rate globally or per path. |
| Timeout | Timing out request by configuration. |
| CORS | Server side CORS validation. |
| JWT | Server side JWT validation. |
| Secure | Server side secure validation. |
| CSRF | Server side csrf validation. |

## YAML options
User can start multiple [gRPC](https://grpc.io/docs/languages/go/) and [grpc-gateway](https://github.com/grpc-ecosystem/grpc-gateway) instances at the same time. Please make sure use different port and name.

show

```yaml
---
#app:
# name: my-app # Optional, default: "rk-app"
# version: "v1.0.0" # Optional, default: "v0.0.0"
# description: "this is description" # Optional, default: ""
# keywords: ["rk", "golang"] # Optional, default: []
# homeUrl: "http://example.com" # Optional, default: ""
# docsUrl: ["http://example.com"] # Optional, default: []
# maintainers: ["rk-dev"] # Optional, default: []
#logger:
# - name: my-logger # Required
# description: "Description of entry" # Optional
# domain: "*" # Optional, default: "*"
# default: false # Optional, default: false, use as default logger entry
# zap: # Optional
# level: info # Optional, default: info
# development: true # Optional, default: true
# disableCaller: false # Optional, default: false
# disableStacktrace: true # Optional, default: true
# encoding: console # Optional, default: console
# outputPaths: ["stdout"] # Optional, default: [stdout]
# errorOutputPaths: ["stderr"] # Optional, default: [stderr]
# encoderConfig: # Optional
# timeKey: "ts" # Optional, default: ts
# levelKey: "level" # Optional, default: level
# nameKey: "logger" # Optional, default: logger
# callerKey: "caller" # Optional, default: caller
# messageKey: "msg" # Optional, default: msg
# stacktraceKey: "stacktrace" # Optional, default: stacktrace
# skipLineEnding: false # Optional, default: false
# lineEnding: "\n" # Optional, default: \n
# consoleSeparator: "\t" # Optional, default: \t
# sampling: # Optional, default: nil
# initial: 0 # Optional, default: 0
# thereafter: 0 # Optional, default: 0
# initialFields: # Optional, default: empty map
# key: value
# lumberjack: # Optional, default: nil
# filename:
# maxsize: 1024 # Optional, suggested: 1024 (MB)
# maxage: 7 # Optional, suggested: 7 (day)
# maxbackups: 3 # Optional, suggested: 3 (day)
# localtime: true # Optional, suggested: true
# compress: true # Optional, suggested: true
# loki:
# enabled: true # Optional, default: false
# addr: localhost:3100 # Optional, default: localhost:3100
# path: /loki/api/v1/push # Optional, default: /loki/api/v1/push
# username: "" # Optional, default: ""
# password: "" # Optional, default: ""
# maxBatchWaitMs: 3000 # Optional, default: 3000
# maxBatchSize: 1000 # Optional, default: 1000
# insecureSkipVerify: false # Optional, default: false
# labels: # Optional, default: empty map
# my_label_key: my_label_value
#event:
# - name: my-event # Required
# description: "Description of entry" # Optional
# domain: "*" # Optional, default: "*"
# encoding: console # Optional, default: console
# default: false # Optional, default: false, use as default event entry
# outputPaths: ["stdout"] # Optional, default: [stdout]
# lumberjack: # Optional, default: nil
# filename:
# maxsize: 1024 # Optional, suggested: 1024 (MB)
# maxage: 7 # Optional, suggested: 7 (day)
# maxbackups: 3 # Optional, suggested: 3 (day)
# localtime: true # Optional, suggested: true
# compress: true # Optional, suggested: true
# loki:
# enabled: true # Optional, default: false
# addr: localhost:3100 # Optional, default: localhost:3100
# path: /loki/api/v1/push # Optional, default: /loki/api/v1/push
# username: "" # Optional, default: ""
# password: "" # Optional, default: ""
# maxBatchWaitMs: 3000 # Optional, default: 3000
# maxBatchSize: 1000 # Optional, default: 1000
# insecureSkipVerify: false # Optional, default: false
# labels: # Optional, default: empty map
# my_label_key: my_label_value
#cert:
# - name: my-cert # Required
# description: "Description of entry" # Optional, default: ""
# domain: "*" # Optional, default: "*"
# caPath: "certs/ca.pem" # Optional, default: ""
# certPemPath: "certs/server-cert.pem" # Optional, default: ""
# keyPemPath: "certs/server-key.pem" # Optional, default: ""
#config:
# - name: my-config # Required
# description: "Description of entry" # Optional, default: ""
# domain: "*" # Optional, default: "*"
## path: "config/config.yaml" # Optional
# envPrefix: "" # Optional, default: ""
# content: # Optional, defualt: empty map
# key: value
grpc:
- name: greeter # Required
enabled: true # Required
port: 8080 # Required
# gwPort: 8081 # Optional, default: gateway port will be the same as grpc port if not provided
# description: "greeter server" # Optional, default: ""
# enableReflection: true # Optional, default: false
# enableRkGwOption: true # Optional, default: false
# grpcWeb:
# enabled: true
# cors:
# allowOrigins: [] # Optional, default: [*]
# websocket:
# enabled: true # Optional, default: disable websocket
# pingIntervalMs: 10 # Optional, default: disable ping
# messageReadLimitBytes: 32769 # Optional, default: 32769
# gwOption: # Optional, default: nil
# marshal: # Optional, default: nil
# multiline: false # Optional, default: false
# emitUnpopulated: false # Optional, default: false
# indent: "" # Optional, default: false
# allowPartial: false # Optional, default: false
# useProtoNames: false # Optional, default: false
# useEnumNumbers: false # Optional, default: false
# unmarshal: # Optional, default: nil
# allowPartial: false # Optional, default: false
# discardUnknown: false # Optional, default: false
# noRecvMsgSizeLimit: true # Optional, default: false
# certEntry: my-cert # Optional, default: "", reference of cert entry declared above
# loggerEntry: my-logger # Optional, default: "", reference of cert entry declared above, STDOUT will be used if missing
# eventEntry: my-event # Optional, default: "", reference of cert entry declared above, STDOUT will be used if missing
# sw:
# enabled: true # Optional, default: false
# path: "sw" # Optional, default: "sw"
# jsonPath: [""] # Optional
# headers: ["sw:rk"] # Optional, default: []
# docs:
# enabled: true # Optional, default: false
# path: "docs" # Optional, default: "docs"
# specPath: "" # Optional
# headers: ["sw:rk"] # Optional, default: []
# style: # Optional
# theme: "light" # Optional, default: "light"
# debug: false # Optional, default: false
# commonService:
# enabled: true # Optional, default: false
# static:
# enabled: true # Optional, default: false
# path: "/static" # Optional, default: /static
# sourceType: local # Required, options: pkger, local
# sourcePath: "." # Required, full path of source directory
# pprof:
# enabled: true # Optional, default: false
# path: "/pprof" # Optional, default: /pprof
# prom:
# enabled: true # Optional, default: false
# path: "" # Optional, default: "metrics"
# pusher:
# enabled: false # Optional, default: false
# jobName: "greeter-pusher" # Required
# remoteAddress: "localhost:9091" # Required
# basicAuth: "user:pass" # Optional, default: ""
# intervalMs: 10000 # Optional, default: 1000
# certEntry: my-cert # Optional, default: "", reference of cert entry declared above
# middleware:
# ignore: [""] # Optional, default: []
# errorModel: google # Optional, default: google, [amazon, google] are supported options
# logging:
# enabled: true # Optional, default: false
# ignore: [""] # Optional, default: []
# loggerEncoding: "console" # Optional, default: "console"
# loggerOutputPaths: ["logs/app.log"] # Optional, default: ["stdout"]
# eventEncoding: "console" # Optional, default: "console"
# eventOutputPaths: ["logs/event.log"] # Optional, default: ["stdout"]
# prom:
# enabled: true # Optional, default: false
# ignore: [""] # Optional, default: []
# auth:
# enabled: true # Optional, default: false
# ignore: [""] # Optional, default: []
# basic:
# - "user:pass" # Optional, default: []
# apiKey:
# - "keys" # Optional, default: []
# meta:
# enabled: true # Optional, default: false
# ignore: [""] # Optional, default: []
# prefix: "rk" # Optional, default: "rk"
# trace:
# enabled: true # Optional, default: false
# ignore: [""] # Optional, default: []
# exporter: # Optional, default will create a stdout exporter
# file:
# enabled: true # Optional, default: false
# outputPath: "logs/trace.log" # Optional, default: stdout
# jaeger:
# agent:
# enabled: false # Optional, default: false
# host: "" # Optional, default: localhost
# port: 0 # Optional, default: 6831
# collector:
# enabled: true # Optional, default: false
# endpoint: "" # Optional, default: http://localhost:14268/api/traces
# username: "" # Optional, default: ""
# password: "" # Optional, default: ""
# rateLimit:
# enabled: false # Optional, default: false
# ignore: [""] # Optional, default: []
# algorithm: "leakyBucket" # Optional, default: "tokenBucket"
# reqPerSec: 100 # Optional, default: 1000000
# paths:
# - path: "/rk/v1/healthy" # Optional, default: ""
# reqPerSec: 0 # Optional, default: 1000000
# timeout:
# enabled: false # Optional, default: false
# ignore: [""] # Optional, default: []
# timeoutMs: 5000 # Optional, default: 5000
# paths:
# - path: "/rk/v1/healthy" # Optional, default: ""
# timeoutMs: 1000 # Optional, default: 5000
# jwt:
# enabled: true # Optional, default: false
# ignore: [ "" ] # Optional, default: []
# signerEntry: "" # Optional, default: ""
# skipVerify: false # Optional, default: false
# symmetric: # Optional
# algorithm: "" # Required, default: ""
# token: "" # Optional, default: ""
# tokenPath: "" # Optional, default: ""
# asymmetric: # Optional
# algorithm: "" # Required, default: ""
# privateKey: "" # Optional, default: ""
# privateKeyPath: "" # Optional, default: ""
# publicKey: "" # Optional, default: ""
# publicKeyPath: "" # Optional, default: ""
# tokenLookup: "header:" # Optional, default: "header:Authorization"
# authScheme: "Bearer" # Optional, default: "Bearer"
# secure:
# enabled: true # Optional, default: false
# ignore: [""] # Optional, default: []
# xssProtection: "" # Optional, default: "1; mode=block"
# contentTypeNosniff: "" # Optional, default: nosniff
# xFrameOptions: "" # Optional, default: SAMEORIGIN
# hstsMaxAge: 0 # Optional, default: 0
# hstsExcludeSubdomains: false # Optional, default: false
# hstsPreloadEnabled: false # Optional, default: false
# contentSecurityPolicy: "" # Optional, default: ""
# cspReportOnly: false # Optional, default: false
# referrerPolicy: "" # Optional, default: ""
# csrf:
# enabled: true # Optional, default: false
# ignore: [""] # Optional, default: []
# tokenLength: 32 # Optional, default: 32
# tokenLookup: "header:X-CSRF-Token" # Optional, default: "header:X-CSRF-Token"
# cookieName: "_csrf" # Optional, default: _csrf
# cookieDomain: "" # Optional, default: ""
# cookiePath: "" # Optional, default: ""
# cookieMaxAge: 86400 # Optional, default: 86400
# cookieHttpOnly: false # Optional, default: false
# cookieSameSite: "default" # Optional, default: "default", options: lax, strict, none, default
# gzip:
# enabled: true # Optional, default: false
# ignore: [""] # Optional, default: []
# level: bestSpeed # Optional, options: [noCompression, bestSpeed, bestCompression, defaultCompression, huffmanOnly]
# cors:
# enabled: true # Optional, default: false
# ignore: [""] # Optional, default: []
# allowOrigins: # Optional, default: []
# - "http://localhost:*" # Optional, default: *
# allowCredentials: false # Optional, default: false
# allowHeaders: [] # Optional, default: []
# allowMethods: [] # Optional, default: []
# exposeHeaders: [] # Optional, default: []
# maxAge: 0 # Optional, default: 0
```

## Development Status: Stable

## Build instruction
Simply run make all to validate your changes. Or run codes in example/ folder.

- make all

Run unit-test, golangci-lint, doctoc and gofmt.

- make buf

## Test instruction
Run unit test with **make test** command.

Github workflow will automatically run unit test and golangci-lint for testing and lint validation.

## Contributing
We encourage and support an active, healthy community of contributors;
including you! Details are in the [contribution guide](CONTRIBUTING.md) and
the [code of conduct](CODE_OF_CONDUCT.md). The rk maintainers keep an eye on
issues and pull requests, but you can also report any negative conduct to
[email protected].

Released under the [Apache 2.0 License](LICENSE).