Feat/tamarin eval api (#38)

cmd/risor-api/main.go

@@ -0,0 +1,83 @@
+package main
+
+import (
+	"context"
+	"encoding/json"
+	"flag"
+	"log"
+	"net/http"
+	"time"
+
+	"github.com/go-chi/chi/v5"
+	"github.com/go-chi/chi/v5/middleware"
+	"github.com/risor-io/risor"
+	"github.com/risor-io/risor/modules/all"
+	"github.com/risor-io/risor/parser"
+)
+
+type Request struct {
+	Content string `json:"content"`
+}
+
+type Response struct {
+	Result string `json:"result"`
+	Time   float64 `json:"time"`
+}
+
+func main() {
+	var port string
+	flag.StringVar(&port, "port", "3000", "Define port for the server to listen on")
+	flag.Parse()
+
+	r := chi.NewRouter()
+	r.Use(middleware.Logger)
+	r.Post("/execute", func(w http.ResponseWriter, r *http.Request) {
+		executeHandler(w, r)
+	})
+
+	log.Println("Server started on http://localhost:" + port)
+	log.Fatal(http.ListenAndServe(":" + port, r))
+}
+
+func executeHandler(w http.ResponseWriter, r *http.Request) {
+	var req Request
+	var res Response
+	json.NewDecoder(r.Body).Decode(&req)
+
+	input := req.Content
+	if input == "" {
+		http.Error(w, "Please provide a code snippet", http.StatusBadRequest)
+		return
+	}
+
+	ctx := context.Background()
+	start := time.Now()
+
+	result, err := risor.Eval(ctx, string(input),
+		risor.WithBuiltins(all.Builtins()),
+		risor.WithDefaultBuiltins(),
+		risor.WithDefaultModules())
+	if err != nil {
+		parserErr, ok := err.(parser.ParserError)
+		if ok {
+			http.Error(w, parserErr.FriendlyMessage(), http.StatusInternalServerError)
+		} else {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+		}
+		return
+	}
+
+	res.Result = result.Inspect()
+
+	res.Time = time.Since(start).Seconds()
+
+	response, err := json.Marshal(res)
+	if err != nil {
+		http.Error(w, "Internal Server Error", http.StatusInternalServerError)
+		return
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(http.StatusCreated)
+	w.Write(response)
+}

cmd/risor-api/main_test.go

@@ -0,0 +1,43 @@
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+)
+
+func TestExecuteHandler(t *testing.T) {
+	payload := Request{
+		Content: "['welcome', 'to', 'risor', '👋'] | strings.join(' ')",
+	}
+	payloadBytes, _ := json.Marshal(payload)
+
+	req, err := http.NewRequest("POST", "/execute", bytes.NewBuffer(payloadBytes))
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	rr := httptest.NewRecorder()
+
+	executeHandler(rr, req)
+
+	if status := rr.Code; status != http.StatusCreated {
+		t.Errorf("handler returned wrong status code: got %v want %v", status, http.StatusCreated)
+	}
+
+	var response Response
+	if err := json.Unmarshal(rr.Body.Bytes(), &response); err != nil {
+		t.Fatal(err)
+	}
+
+	expectedResult :=  "\"welcome to risor 👋\""
+	if response.Result != expectedResult {
+		t.Errorf("handler returned unexpected result: got %s want %s", response.Result, expectedResult)
+	}
+
+	if response.Time <= 0 {
+		t.Errorf("handler returned invalid response time: %f", response.Time)
+	}
+}

go.mod

@@ -60,6 +60,7 @@ require (
 	github.com/aws/smithy-go v1.13.5 // indirect
 	github.com/containerd/console v1.0.3 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/go-chi/chi/v5 v5.0.8
 	github.com/hashicorp/errwrap v1.0.0 // indirect
 	github.com/jackc/pgpassfile v1.0.0 // indirect
 	github.com/jackc/pgservicefile v0.0.0-20221227161230-091c0ba34f0a // indirect

go.sum

@@ -113,6 +113,8 @@ github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSs
 github.com/fatih/color v1.15.0 h1:kOqh6YHBtK8aywxGerMG2Eq3H6Qgoqeo13Bk2Mv/nBs=
 github.com/fatih/color v1.15.0/go.mod h1:0h5ZqXfHYED7Bhv2ZJamyIOUej9KtShiJESRwBDUSsw=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
+github.com/go-chi/chi/v5 v5.0.8 h1:lD+NLqFcAi1ovnVZpsnObHGW4xb4J8lNmoYVfECH1Y0=
+github.com/go-chi/chi/v5 v5.0.8/go.mod h1:DslCQbL2OYiznFReuXYUmQ2hGd1aDpCnlMNITLSKoi8=
 github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
 github.com/gofrs/uuid v4.4.0+incompatible h1:3qXRTX8/NbyulANqlc0lchS1gqAVxRgsuW1YrTJupqA=
 github.com/gofrs/uuid v4.4.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRxnplIgP/c0N/04lM=