add JudgeServer client for go

client/go/README.md

@@ -0,0 +1,19 @@
+# JudgeServer client for Golang
+
+# Installation
+
+Install:
+
+```shell
+go get -d github.com/QingdaoU/JudgeServer/client/go
+```
+
+Import:
+
+```go
+import "github.com/QingdaoU/JudgeServer/client/go"
+```
+
+# Examples
+
+[examples](https://github.com/QingdaoU/JudgeServer/tree/master/client/go/examples)

client/go/client.go

@@ -0,0 +1,120 @@
+package judge
+
+import (
+	"net/http"
+	"io/ioutil"
+	"io"
+	"crypto/sha256"
+	"encoding/hex"
+	"encoding/json"
+	"time"
+	"bytes"
+	"fmt"
+)
+
+type Resp struct {
+	RespData interface{} `json:"data"`
+	RespErr  string      `json:"err"`
+	err      error       `json:"-"`
+}
+
+func (resp *Resp) Data() interface{} {
+	if resp == nil {
+		return nil
+	}
+	return resp.RespData
+}
+
+func (resp *Resp) Err() error {
+	if resp == nil {
+		return nil
+	}
+	return resp.err
+}
+
+func parseResp(body []byte) (*Resp, error) {
+	resp := &Resp{}
+	err := json.Unmarshal(body, resp)
+	if err != nil {
+		return nil, err
+	}
+	// 有错误的响应了
+	if resp.RespErr != "" {
+		resp.err = fmt.Errorf("err: %s, data: %s", resp.RespErr, resp.RespData)
+	}
+
+	return resp, nil
+}
+
+type Client struct {
+	opts        *options
+	sha256Token string
+	httpClient  *http.Client
+}
+
+func (c *Client) request(method, path string, body io.Reader) (resp *Resp, err error) {
+	req, err := http.NewRequest("POST", c.opts.EndpointURL+"/"+path, body)
+	if err != nil {
+		return
+	}
+	req.Header.Set("X-Judge-Server-Token", c.sha256Token)
+	req.Header.Set("Content-Type", "application/json")
+
+	httpResp, err := c.httpClient.Do(req)
+	if err != nil {
+		return
+	}
+	b, err := ioutil.ReadAll(httpResp.Body)
+	if err != nil {
+		return
+	}
+	httpResp.Body.Close()
+	return parseResp(b)
+}
+
+func (c *Client) post(path string, body io.Reader) (resp *Resp, err error) {
+	return c.request("POST", path, body)
+}
+
+// Ping Judge server
+func (c *Client) Ping() (resp *Resp, err error) {
+	resp, err = c.post("ping", nil)
+	return
+}
+
+func (c *Client) CompileSpj(src, spjVersion string, spjCompileConfig *CompileConfig) (resp *Resp, err error) {
+	data := map[string]interface{}{
+		"src":                src,
+		"spj_version":        spjVersion,
+		"spj_compile_config": spjCompileConfig,
+	}
+	b, err := json.Marshal(data)
+	if err != nil {
+		return
+	}
+	resp, err = c.post("compile_spj", bytes.NewReader(b))
+	return
+}
+
+func New(endpointURL, token string, timeout time.Duration) *Client {
+	return NewClient(
+		WithEndpointURL(endpointURL),
+		WithToken(token),
+		WithTimeout(timeout),
+	)
+}
+
+func NewClient(options ...Option) *Client {
+	opts := DefaultOptions
+	for _, o := range options {
+		o(opts)
+	}
+	sha256Token := sha256.Sum256([]byte(opts.Token))
+	return &Client{
+		opts:        opts,
+		sha256Token: hex.EncodeToString(sha256Token[:]),
+		httpClient: &http.Client{
+			Timeout: opts.Timeout,
+		},
+	}
+}

client/go/client_test.go

@@ -0,0 +1,56 @@
+package judge
+
+import (
+	"testing"
+)
+
+var client *Client
+
+func TestMain(m *testing.M) {
+	// 创建一个client。 这句代码等价于  New("http://127.0.0.1:12358", "YOUR_TOKEN_HERE", 0)
+	client = NewClient(
+		WithEndpointURL("http://127.0.0.1:12358"),
+		WithToken("YOUR_TOKEN_HERE"),
+		WithTimeout(0),
+	)
+	m.Run()
+}
+
+func TestClient_Ping(t *testing.T) {
+	resp, err := client.Ping()
+	if err != nil {
+		t.Errorf("unexpected error. error: %+v", err)
+		return
+	}
+	if resp.Err() != nil {
+		t.Errorf("unexpected error. error: %+v", resp.Err())
+		return
+	}
+
+	if resp.RespData == nil {
+		t.Error("resp.RespData unexpected nil")
+		return
+	}
+}
+
+func TestClient_CompileSpj(t *testing.T) {
+	cSpjSrc := `
+#include <stdio.h>
+int main(){
+    return 1;
+}
+`
+	resp, err := client.CompileSpj(cSpjSrc, "2", CLangSPJCompile)
+	if err != nil {
+		t.Errorf("unexpected error. error: %+v", err)
+		return
+	}
+	if resp.Err() != nil {
+		t.Errorf("unexpected error. error: %+v", resp.Err())
+		return
+	}
+	if resp.RespData == nil {
+		t.Error("resp.RespData unexpected nil")
+		return
+	}
+}

client/go/examples/example.go

@@ -0,0 +1,138 @@
+package main
+
+import (
+	"github.com/QingdaoU/JudgeServer/client/go"
+	"fmt"
+)
+
+var (
+	cSrc = `
+#include <stdio.h>
+int main(){
+	int a, b;
+	scanf("%d%d", &a, &b);
+	printf("%d\n", a+b);
+	return 0;
+}
+`
+	cSPJSrc = `
+#include <stdio.h>
+int main(){
+	return 1;
+}
+`
+	cppSrc = `
+#include <iostream>
+
+using namespace std;
+
+int main()
+{
+	int a,b;
+	cin >> a >> b;
+	cout << a+b << endl;
+	return 0;
+}
+`
+	javaSrc = `
+import java.util.Scanner;
+public class Main{
+	public static void main(String[] args){
+		Scanner in=new Scanner(System.in);
+		int a=in.nextInt();
+		int b=in.nextInt();
+		System.out.println(a + b);
+	}
+}
+`
+	py2Src = `
+s = raw_input()
+s1 = s.split(" ")
+print int(s1[0]) + int(s1[1])
+`
+	py3Src = `
+s = input()
+s1 = s.split(" ")
+print(int(s1[0]) + int(s1[1]))
+`
+)
+
+func main() {
+	// 创建一个client。 这句代码等价于  judge.New("http://127.0.0.1:12358", "YOUR_TOKEN_HERE", 0)
+	client := judge.NewClient(
+		judge.WithEndpointURL("http://127.0.0.1:12358"),
+		judge.WithToken("YOUR_TOKEN_HERE"),
+		judge.WithTimeout(0),
+	)
+
+	fmt.Println("ping:")
+	resp, err := client.Ping()
+	if err != nil {
+		// 这个 err 是发生在 client 这边的错误。 例如json编码失败
+		fmt.Printf("ping client error. error is: %v.\n", err)
+	} else if resp.Err() != nil {
+		// 这个 resp.Err() 是 JudgeServer 响应的错误。 例如token错误 TokenVerificationFailed
+		fmt.Printf("ping server error. error is: %v.\n", resp.Err().Error())
+	} else {
+		fmt.Println(resp.Data())
+	}
+	fmt.Println()
+
+	fmt.Println("cpp_judge")
+	resp, err = client.JudgeWithRequest(&judge.JudgeRequest{
+		Src:            cppSrc,
+		LanguageConfig: judge.CPPLangConfig,
+		MaxCpuTime:     1000,
+		MaxMemory:      128 * 1024 * 1024,
+		TestCaseId:     "normal",
+	})
+	fmt.Println(resp, err)
+	fmt.Println()
+
+	fmt.Println("java_judge")
+	resp, err = client.JudgeWithRequest(&judge.JudgeRequest{
+		Src:            javaSrc,
+		LanguageConfig: judge.JavaLangConfig,
+		MaxCpuTime:     1000,
+		MaxMemory:      256 * 1024 * 1024,
+		TestCaseId:     "normal",
+	})
+	fmt.Println(resp, err)
+	fmt.Println()
+
+	fmt.Println("c_spj_judge")
+	resp, err = client.JudgeWithRequest(&judge.JudgeRequest{
+		Src:              cSrc,
+		LanguageConfig:   judge.CLangConfig,
+		MaxCpuTime:       1000,
+		MaxMemory:        128 * 1024 * 1024,
+		TestCaseId:       "spj",
+		SPJVersion:       "3",
+		SPJConfig:        judge.CLangSPJConfig,
+		SPJCompileConfig: judge.CLangSPJCompile,
+		SPJSrc:           cSPJSrc,
+	})
+	fmt.Println(resp, err)
+	fmt.Println()
+
+	fmt.Println("py2_judge")
+	resp, err = client.JudgeWithRequest(&judge.JudgeRequest{
+		Src:            py2Src,
+		LanguageConfig: judge.PY2LangConfig,
+		MaxCpuTime:     1000,
+		MaxMemory:      128 * 1024 * 1024,
+		TestCaseId:     "normal",
+	})
+	fmt.Println(resp, err)
+	fmt.Println()
+
+	fmt.Println("py3_judge")
+	resp, err = client.JudgeWithRequest(&judge.JudgeRequest{
+		Src:            py3Src,
+		LanguageConfig: judge.PY3LangConfig,
+		MaxCpuTime:     1000,
+		MaxMemory:      128 * 1024 * 1024,
+		TestCaseId:     "normal",
+	})
+	fmt.Println(resp, err)
+}

client/go/judge.go

@@ -0,0 +1,46 @@
+package judge
+
+import (
+	"time"
+	"bytes"
+	"encoding/json"
+)
+
+type JudgeRequest struct {
+	Src              string         `json:"src"`
+	LanguageConfig   *LangConfig    `json:"language_config"`
+	MaxCpuTime       int64          `json:"max_cpu_time"`
+	MaxMemory        int64          `json:"max_memory"`
+	TestCaseId       string         `json:"test_case_id"`
+	SPJVersion       string         `json:"spj_version"`
+	SPJConfig        *SPJConfig     `json:"spj_config"`
+	SPJCompileConfig *CompileConfig `json:"spj_compile_config"`
+	SPJSrc           string         `json:"spj_src"`
+	Output           bool           `json:"output"`
+}
+
+// 这个方法为了模仿 php 和 python client 不推荐使用
+func (c *Client) Judge(src string, languageConfig *LangConfig, maxCpuTime time.Duration, maxMemory int64, testCaseId,
+spjVersion string, spjConfig *SPJConfig, spjCompileConfig *CompileConfig, spjSrc string, output bool) (resp *Resp, err error) {
+	return c.JudgeWithRequest(&JudgeRequest{
+		Src:              src,
+		LanguageConfig:   languageConfig,
+		MaxCpuTime:       int64(maxCpuTime),
+		MaxMemory:        maxMemory,
+		TestCaseId:       testCaseId,
+		SPJVersion:       spjVersion,
+		SPJConfig:        spjConfig,
+		SPJCompileConfig: spjCompileConfig,
+		SPJSrc:           spjSrc,
+		Output:           output,
+	})
+}
+
+func (c *Client) JudgeWithRequest(req *JudgeRequest) (resp *Resp, err error) {
+	b, err := json.Marshal(req)
+	if err != nil {
+		return
+	}
+	resp, err = c.post("judge", bytes.NewReader(b))
+	return
+}

client/go/judge_test.go

@@ -0,0 +1,76 @@
+package judge
+
+import "testing"
+
+func TestClient_JudgeWithRequest(t *testing.T) {
+	javaSrc := `
+import java.util.Scanner;
+	public class Main{
+		public static void main(String[] args){
+		Scanner in=new Scanner(System.in);
+		int a=in.nextInt();
+		int b=in.nextInt();
+		System.out.println(a + b);
+	}
+}
+`
+	cSrc := `
+#include <stdio.h>
+int main(){
+	int a, b;
+	scanf("%d%d", &a, &b);
+	printf("%d\n", a+b);
+	return 0;
+}
+`
+	cSPJSrc := `
+#include <stdio.h>
+int main(){
+	return 1;
+}
+`
+	var tests = []struct {
+		JudgeRequest *JudgeRequest
+	}{
+		{
+			JudgeRequest: &JudgeRequest{
+				Src:            javaSrc,
+				LanguageConfig: JavaLangConfig,
+				MaxCpuTime:     1000,
+				MaxMemory:      256 * 1024 * 1024,
+				TestCaseId:     "normal",
+			},
+		},
+		{
+			JudgeRequest: &JudgeRequest{
+				Src:              cSrc,
+				LanguageConfig:   CLangConfig,
+				MaxCpuTime:       1000,
+				MaxMemory:        128 * 1024 * 1024,
+				TestCaseId:       "spj",
+				SPJVersion:       "3",
+				SPJConfig:        CLangSPJConfig,
+				SPJCompileConfig: CLangSPJCompile,
+				SPJSrc:           cSPJSrc,
+			},
+		},
+	}
+
+	for _, test := range tests {
+		resp, err := client.JudgeWithRequest(test.JudgeRequest)
+		if err != nil {
+			t.Errorf("unexpected error. error: %+v", err)
+			return
+		}
+		if resp.Err() != nil {
+			t.Errorf("unexpected error. error: %+v", resp.Err())
+			return
+		}
+		if resp.RespData == nil {
+			t.Error("resp.RespData unexpected nil")
+			return
+		}
+
+	}
+
+}

client/go/languages.go

@@ -0,0 +1,126 @@
+package judge
+
+type CompileConfig struct {
+	SrcName        string `json:"src_name"`
+	ExeName        string `json:"exe_name"`
+	MaxCpuTime     int64  `json:"max_cpu_time"`
+	MaxRealTime    int64  `json:"max_real_time"`
+	MaxMemory      int64  `json:"max_memory"`
+	CompileCommand string `json:"compile_command"`
+}
+
+var DefaultEnv = []string{"LANG=en_US.UTF-8", "LANGUAGE=en_US:en", "LC_ALL=en_US.UTF-8"}
+
+type RunConfig struct {
+	Command              string   `json:"command"`
+	SeccompRule          string   `json:"seccomp_rule"`
+	Env                  []string `json:"env"`
+	MemoryLimitCheckOnly int      `json:"memory_limit_check_only"`
+}
+
+type LangConfig struct {
+	CompileConfig CompileConfig `json:"compile"`
+	RunConfig     RunConfig     `json:"run"`
+}
+
+type SPJConfig struct {
+	ExeName     string `json:"exe_name"`
+	Command     string `json:"command"`
+	SeccompRule string `json:"seccomp_rule"`
+}
+
+var CLangConfig = &LangConfig{
+	CompileConfig: CompileConfig{
+		SrcName:        "main.c",
+		ExeName:        "main",
+		MaxCpuTime:     3000,
+		MaxRealTime:    5000,
+		MaxMemory:      128 * 1024 * 1024,
+		CompileCommand: "/usr/bin/gcc -DONLINE_JUDGE -O2 -w -fmax-errors=3 -std=c99 {src_path} -lm -o {exe_path}",
+	},
+	RunConfig: RunConfig{
+		Command:     "{exe_path}",
+		SeccompRule: "c_cpp",
+		Env:         DefaultEnv,
+	},
+}
+
+var CLangSPJCompile = &CompileConfig{
+	SrcName:        "spj-{spj_version}.c",
+	ExeName:        "spj-{spj_version}",
+	MaxCpuTime:     3000,
+	MaxRealTime:    5000,
+	MaxMemory:      1024 * 1024 * 1024,
+	CompileCommand: "/usr/bin/gcc -DONLINE_JUDGE -O2 -w -fmax-errors=3 -std=c99 {src_path} -lm -o {exe_path}",
+}
+
+var CLangSPJConfig = &SPJConfig{
+	ExeName:     "spj-{spj_version}",
+	Command:     "{exe_path} {in_file_path} {user_out_file_path}",
+	SeccompRule: "c_cpp",
+}
+
+var CPPLangConfig = &LangConfig{
+	CompileConfig: CompileConfig{
+		SrcName:        "main.cpp",
+		ExeName:        "main",
+		MaxCpuTime:     3000,
+		MaxRealTime:    5000,
+		MaxMemory:      128 * 1024 * 1024,
+		CompileCommand: "/usr/bin/g++ -DONLINE_JUDGE -O2 -w -fmax-errors=3 -std=c++11 {src_path} -lm -o {exe_path}",
+	},
+	RunConfig: RunConfig{
+		Command:     "{exe_path}",
+		SeccompRule: "c_cpp",
+		Env:         DefaultEnv,
+	},
+}
+
+var JavaLangConfig = &LangConfig{
+	CompileConfig: CompileConfig{
+		SrcName:        "Main.java",
+		ExeName:        "Main",
+		MaxCpuTime:     3000,
+		MaxRealTime:    5000,
+		MaxMemory:      -1,
+		CompileCommand: "/usr/bin/javac {src_path} -d {exe_dir} -encoding UTF8",
+	},
+	RunConfig: RunConfig{
+		Command:              "/usr/bin/java -cp {exe_dir} -XX:MaxRAM={max_memory}k -Djava.security.manager -Dfile.encoding=UTF-8 -Djava.security.policy==/etc/java_policy -Djava.awt.headless=true Main",
+		SeccompRule:          "",
+		Env:                  DefaultEnv,
+		MemoryLimitCheckOnly: 1,
+	},
+}
+
+var PY2LangConfig = &LangConfig{
+	CompileConfig: CompileConfig{
+		SrcName:        "solution.py",
+		ExeName:        "solution.pyc",
+		MaxCpuTime:     3000,
+		MaxRealTime:    5000,
+		MaxMemory:      128 * 1024 * 1024,
+		CompileCommand: "/usr/bin/python -m py_compile {src_path}",
+	},
+	RunConfig: RunConfig{
+		Command:     "/usr/bin/python {exe_path}",
+		SeccompRule: "general",
+		Env:         DefaultEnv,
+	},
+}
+
+var PY3LangConfig = &LangConfig{
+	CompileConfig: CompileConfig{
+		SrcName:        "solution.py",
+		ExeName:        "__pycache__/solution.cpython-35.pyc",
+		MaxCpuTime:     3000,
+		MaxRealTime:    5000,
+		MaxMemory:      128 * 1024 * 1024,
+		CompileCommand: "/usr/bin/python3 -m py_compile {src_path}",
+	},
+	RunConfig: RunConfig{
+		Command:     "/usr/bin/python3 {exe_path}",
+		SeccompRule: "general",
+		Env:         append(DefaultEnv, "PYTHONIOENCODING=UTF-8"),
+	},
+}

client/go/options.go

@@ -0,0 +1,38 @@
+package judge
+
+import "time"
+
+type options struct {
+	// scheme://host:port .
+	EndpointURL string
+	Token       string
+	// 请求超时时间
+	// 如果 Timeout 为 0，那么意味着不会超时
+	Timeout time.Duration
+}
+
+var DefaultOptions = &options{
+	EndpointURL: "http://127.0.0.1:12358",
+	Token:       "YOUR_TOKEN_HERE",
+	Timeout:     10 * time.Second,
+}
+
+type Option func(*options)
+
+func WithEndpointURL(u string) Option {
+	return func(o *options) {
+		o.EndpointURL = u
+	}
+}
+
+func WithToken(token string) Option {
+	return func(o *options) {
+		o.Token = token
+	}
+}
+
+func WithTimeout(timeout time.Duration) Option {
+	return func(o *options) {
+		o.Timeout = timeout
+	}
+}