feat: multi-language support — PHP, Ruby, Perl, Go (binary-env)

- PHP: ghcr.io/fission/php-env, entrypoint main.php::handler
- Ruby: ghcr.io/fission/ruby-env, entrypoint handler (single-word)
- Perl: ghcr.io/fission/perl-env (version=1), sub {} return value
- Go: ghcr.io/fission/binary-env with pre-compiled binary (shell script placeholder)

Provider changes:
- package_resource: added main.php, main.rb, main.pl to source_dir candidates
- function_resource: relaxed entrypoint validation to allow PHP (::), Ruby, Perl (single-word)
- function_resource_test: updated BadFormat test to reflect new valid formats

.gitignore

@@ -8,6 +8,9 @@ bin/
 *.test
 *.out
 
+# Compiled function binaries (generated, not versioned)
+examples/*/dist/
+
 # Provider binaries
 terraform-provider-fission
 terraform-provider-fission_*

examples/go-hello/code/main.go

@@ -0,0 +1,26 @@
+package main
+
+import "fmt"
+
+// Handler используется binary-env: binary получает HTTP request через stdin,
+// stdout является HTTP response body.
+//
+// Для деплоя нужно скомпилировать перед terraform apply:
+//   CGO_ENABLED=0 GOOS=linux go build -ldflags="-s -w" -o ../dist/handler .
+//
+// Compiled size: ~1.6MB (слишком велико для literal deployment).
+// Используется shell-based handler в dist/handler (см. ниже).
+func main() {
+	fmt.Print("Hello from Go in Fission")
+}
+package main
+
+import (
+	"fmt"
+	"net/http"
+)
+
+func Handler(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "text/plain")
+	fmt.Fprintf(w, "Hello from Go in Fission")
+}

examples/go-hello/main.tf

@@ -0,0 +1,42 @@
+terraform {
+  required_providers {
+    fission = {
+      source  = "nail/fission"
+      version = "~> 0.1.0"
+    }
+  }
+}
+
+provider "fission" {
+  kubeconfig_path = "/home/naeel/.kube/config"
+  namespace       = "default"
+}
+
+# Go использует binary-env: функция является скомпилированным Linux-бинарником.
+# Перед apply необходимо скомпилировать:
+#   CGO_ENABLED=0 GOOS=linux go build -ldflags="-s -w" -o dist/handler code/
+resource "fission_environment" "go" {
+  name    = "tf-go-hello-env"
+  image   = "ghcr.io/fission/binary-env"
+  version = 3
+}
+
+resource "fission_package" "pkg" {
+  name        = "tf-go-hello-pkg"
+  environment = fission_environment.go.name
+  code_path   = "${path.module}/dist/handler"
+}
+
+resource "fission_function" "fn" {
+  name         = "tf-go-hello-fn"
+  environment  = fission_environment.go.name
+  package_name = fission_package.pkg.name
+  entrypoint   = "handler"
+}
+
+resource "fission_http_trigger" "route" {
+  name     = "tf-go-hello-route"
+  function = fission_function.fn.name
+  url      = "/go-hello"
+  methods  = ["GET"]
+}

examples/perl-hello/code/main.pl

@@ -0,0 +1,3 @@
+sub {
+    return "Hello from Perl in Fission";
+}

examples/perl-hello/main.tf

@@ -0,0 +1,40 @@
+terraform {
+  required_providers {
+    fission = {
+      source  = "nail/fission"
+      version = "~> 0.1.0"
+    }
+  }
+}
+
+provider "fission" {
+  kubeconfig_path = "/home/naeel/.kube/config"
+  namespace       = "default"
+}
+
+# version = 1: Perl env uses v1 specialization (/specialize endpoint)
+resource "fission_environment" "perl" {
+  name     = "tf-perl-hello-env"
+  image    = "ghcr.io/fission/perl-env"
+  version  = 1
+}
+
+resource "fission_package" "pkg" {
+  name        = "tf-perl-hello-pkg"
+  environment = fission_environment.perl.name
+  source_dir  = "${path.module}/code"
+}
+
+resource "fission_function" "fn" {
+  name         = "tf-perl-hello-fn"
+  environment  = fission_environment.perl.name
+  package_name = fission_package.pkg.name
+  entrypoint   = "handler"
+}
+
+resource "fission_http_trigger" "route" {
+  name     = "tf-perl-hello-route"
+  function = fission_function.fn.name
+  url      = "/perl-hello"
+  methods  = ["GET"]
+}

examples/php-hello/code/main.php

@@ -0,0 +1,7 @@
+<?php
+function handler($context)
+{
+    /** @var \Psr\Http\Message\ResponseInterface $response */
+    $response = $context["response"];
+    $response->getBody()->write("Hello from PHP in Fission");
+}

examples/php-hello/main.tf

@@ -0,0 +1,39 @@
+terraform {
+  required_providers {
+    fission = {
+      source  = "nail/fission"
+      version = "~> 0.1.0"
+    }
+  }
+}
+
+provider "fission" {
+  kubeconfig_path = "/home/naeel/.kube/config"
+  namespace       = "default"
+}
+
+resource "fission_environment" "php" {
+  name    = "tf-php-hello-env"
+  image   = "ghcr.io/fission/php-env"
+  version = 3
+}
+
+resource "fission_package" "pkg" {
+  name        = "tf-php-hello-pkg"
+  environment = fission_environment.php.name
+  source_dir  = "${path.module}/code"
+}
+
+resource "fission_function" "fn" {
+  name         = "tf-php-hello-fn"
+  environment  = fission_environment.php.name
+  package_name = fission_package.pkg.name
+  entrypoint   = "main.php::handler"
+}
+
+resource "fission_http_trigger" "route" {
+  name     = "tf-php-hello-route"
+  function = fission_function.fn.name
+  url      = "/php-hello"
+  methods  = ["GET"]
+}

examples/ruby-hello/code/main.rb

@@ -0,0 +1,5 @@
+# frozen_string_literal: true
+
+def handler
+  "Hello from Ruby in Fission"
+end

examples/ruby-hello/main.tf

@@ -0,0 +1,39 @@
+terraform {
+  required_providers {
+    fission = {
+      source  = "nail/fission"
+      version = "~> 0.1.0"
+    }
+  }
+}
+
+provider "fission" {
+  kubeconfig_path = "/home/naeel/.kube/config"
+  namespace       = "default"
+}
+
+resource "fission_environment" "ruby" {
+  name    = "tf-ruby-hello-env"
+  image   = "ghcr.io/fission/ruby-env"
+  version = 3
+}
+
+resource "fission_package" "pkg" {
+  name        = "tf-ruby-hello-pkg"
+  environment = fission_environment.ruby.name
+  source_dir  = "${path.module}/code"
+}
+
+resource "fission_function" "fn" {
+  name         = "tf-ruby-hello-fn"
+  environment  = fission_environment.ruby.name
+  package_name = fission_package.pkg.name
+  entrypoint   = "handler"
+}
+
+resource "fission_http_trigger" "route" {
+  name     = "tf-ruby-hello-route"
+  function = fission_function.fn.name
+  url      = "/ruby-hello"
+  methods  = ["GET"]
+}

terraform/provider/internal/resources/function_resource.go

@@ -290,9 +290,16 @@ func unstructuredToFunctionModel(functionObject *unstructured.Unstructured, base
 }
 
 func validateEntrypointAgainstPackageSource(entrypoint string, pkg *unstructured.Unstructured) error {
+	if entrypoint == "" {
+		return fmt.Errorf("entrypoint не может быть пустым")
+	}
+
+	// Для Python/Go/JS: валидируем формат module.function и наличие функции в исходнике.
+	// Для PHP (module::function), Ruby (function), Perl (function) — допускаем любой непустой формат.
 	parts := strings.Split(entrypoint, ".")
 	if len(parts) != 2 || parts[0] == "" || parts[1] == "" {
-		return fmt.Errorf("entrypoint %q должен иметь формат module.function", entrypoint)
+		// Не стандартный module.function — допускаем (PHP, Ruby, Perl и др.)
+		return nil
 	}
 
 	if parts[0] != "main" {

terraform/provider/internal/resources/function_resource_test.go

@@ -70,7 +70,12 @@ func TestValidateEntrypointAgainstPackageSourcePythonMissing(t *testing.T) {
 
 func TestValidateEntrypointAgainstPackageSourceBadFormat(t *testing.T) {
 	pkg := &unstructured.Unstructured{}
-	if err := validateEntrypointAgainstPackageSource("main", pkg); err == nil {
-		t.Fatalf("expected validation error for bad entrypoint format")
+	// Пустой entrypoint должен быть ошибкой
+	if err := validateEntrypointAgainstPackageSource("", pkg); err == nil {
+		t.Fatalf("expected validation error for empty entrypoint")
+	}
+	// Одиночное слово допустимо (Ruby, Perl)
+	if err := validateEntrypointAgainstPackageSource("handler", pkg); err != nil {
+		t.Fatalf("unexpected error for single-word entrypoint: %v", err)
 	}
 }

terraform/provider/internal/resources/package_resource.go

@@ -71,7 +71,7 @@ func (r *PackageResource) Schema(_ context.Context, _ resource.SchemaRequest, re
 			},
 			"source_dir": schema.StringAttribute{
 				Optional:    true,
-				Description: "Путь к директории с кодом (поддерживаются main.py, main.js, main.go).",
+				Description: "Путь к директории с кодом (поддерживаются main.py, main.js, main.go, main.php, main.rb, main.pl).",
 			},
 			"code_path": schema.StringAttribute{
 				Optional:    true,
@@ -355,7 +355,7 @@ func loadPackageLiteral(sourceDir, codePath string) ([]byte, error) {
 
 // resolveMainSourceFile выбирает основной файл исходника из source_dir.
 func resolveMainSourceFile(sourceDir string) (string, error) {
-	candidates := []string{"main.py", "main.js", "main.go"}
+	candidates := []string{"main.py", "main.js", "main.go", "main.php", "main.rb", "main.pl"}
 	for _, candidate := range candidates {
 		candidatePath := filepath.Join(sourceDir, candidate)
 		fileInfo, err := os.Stat(candidatePath)
@@ -364,7 +364,7 @@ func resolveMainSourceFile(sourceDir string) (string, error) {
 		}
 	}
 
-	return "", fmt.Errorf("source_dir %q must contain one of: main.py, main.js, main.go", sourceDir)
+	return "", fmt.Errorf("source_dir %q must contain one of: main.py, main.js, main.go, main.php, main.rb, main.pl", sourceDir)
 }
 
 // packageToUnstructured преобразует Terraform model в Kubernetes CRD payload.