From 2ca3137c0b9627ceb92d74a1b7c425ecbc370d90 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E2=80=9CNaeel=E2=80=9D?= <tazet@narod.ru>
Date: Wed, 11 Mar 2026 16:37:22 +0400
Subject: [PATCH] =?UTF-8?q?feat:=20=D0=BF=D1=80=D0=B8=D0=BC=D0=B5=D1=80=20?=
 =?UTF-8?q?pg-list-python=20=E2=80=94=20=D1=81=D0=BF=D0=B8=D1=81=D0=BE?=
 =?UTF-8?q?=D0=BA=20=D0=B8=D0=B7=20PostgreSQL=20=D0=B1=D0=B5=D0=B7=20?=
 =?UTF-8?q?=D0=B4=D0=B6=D0=BE=D0=B1=D0=B0?=
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---
 examples/pg-list-python/code/catalog.py       | 47 +++++++++++++++++++
 examples/pg-list-python/code/requirements.txt |  1 +
 examples/pg-list-python/function.tf           | 29 ++++++++++++
 examples/pg-list-python/main.tf               | 17 +++++++
 examples/pg-list-python/variables.tf          | 14 ++++++
 5 files changed, 108 insertions(+)
 create mode 100644 examples/pg-list-python/code/catalog.py
 create mode 100644 examples/pg-list-python/code/requirements.txt
 create mode 100644 examples/pg-list-python/function.tf
 create mode 100644 examples/pg-list-python/main.tf
 create mode 100644 examples/pg-list-python/variables.tf

diff --git a/examples/pg-list-python/code/catalog.py b/examples/pg-list-python/code/catalog.py
new file mode 100644
index 0000000..54ef884
--- /dev/null
+++ b/examples/pg-list-python/code/catalog.py
@@ -0,0 +1,47 @@
+# 2026-03-11
+# catalog.py — читает список продуктов из PostgreSQL.
+# Таблица demo_products создаётся автоматически при первом вызове.
+# Точка входа: list_products(event)
+
+import json
+import os
+import psycopg2
+
+
+def list_products(event):
+    dsn = os.environ["PG_DSN"]
+    conn = psycopg2.connect(dsn)
+    try:
+        with conn.cursor() as cur:
+            _ensure_table(cur)
+            conn.commit()
+
+            cur.execute("SELECT id, name, price FROM demo_products ORDER BY id")
+            rows = cur.fetchall()
+    finally:
+        conn.close()
+
+    products = [{"id": row[0], "name": row[1], "price": row[2]} for row in rows]
+    return {"products": products, "count": len(products)}
+
+
+def _ensure_table(cur):
+    # Создаём таблицу и наполняем демо-данными — только один раз
+    cur.execute("""
+        CREATE TABLE IF NOT EXISTS demo_products (
+            id    SERIAL PRIMARY KEY,
+            name  TEXT NOT NULL,
+            price NUMERIC(10,2) NOT NULL
+        )
+    """)
+    cur.execute("SELECT COUNT(*) FROM demo_products")
+    if cur.fetchone()[0] == 0:
+        cur.executemany(
+            "INSERT INTO demo_products (name, price) VALUES (%s, %s)",
+            [
+                ("Ноутбук",   89999.00),
+                ("Мышь",       1299.00),
+                ("Клавиатура", 3499.00),
+                ("Монитор",   32000.00),
+            ],
+        )
diff --git a/examples/pg-list-python/code/requirements.txt b/examples/pg-list-python/code/requirements.txt
new file mode 100644
index 0000000..37ec460
--- /dev/null
+++ b/examples/pg-list-python/code/requirements.txt
@@ -0,0 +1 @@
+psycopg2-binary
diff --git a/examples/pg-list-python/function.tf b/examples/pg-list-python/function.tf
new file mode 100644
index 0000000..6638c65
--- /dev/null
+++ b/examples/pg-list-python/function.tf
@@ -0,0 +1,29 @@
+# 2026-03-11
+# function.tf — HTTP-функция: читает из PostgreSQL и возвращает список записей.
+# Нет джобов, нет инициализации — только функция + HTTP триггер.
+
+resource "sless_function" "product_catalog" {
+  name       = "product-catalog"
+  runtime    = "python3.11"
+  entrypoint = "catalog.list_products"
+  memory_mb  = 128
+  timeout_sec = 10
+
+  source_dir = "${path.module}/code"
+
+  # DSN передаётся через env — функция не знает об инфраструктуре
+  env_vars = {
+    PG_DSN = var.pg_dsn
+  }
+}
+
+resource "sless_trigger" "product_catalog_http" {
+  name     = "product-catalog-http"
+  type     = "http"
+  function = sless_function.product_catalog.name
+  enabled  = true
+}
+
+output "catalog_url" {
+  value = sless_trigger.product_catalog_http.url
+}
diff --git a/examples/pg-list-python/main.tf b/examples/pg-list-python/main.tf
new file mode 100644
index 0000000..7d3d427
--- /dev/null
+++ b/examples/pg-list-python/main.tf
@@ -0,0 +1,17 @@
+# 2026-03-11
+# main.tf — провайдер для pg-list-python примера.
+
+terraform {
+  required_providers {
+    sless = {
+      source  = "terra.k8c.ru/naeel/sless"
+      version = "~> 0.1.14"
+    }
+  }
+}
+
+provider "sless" {
+  endpoint       = "https://sless-api.kube5s.ru"
+  token          = var.token
+  nubes_endpoint = "https://deck-api.ngcloud.ru/api/v1"
+}
diff --git a/examples/pg-list-python/variables.tf b/examples/pg-list-python/variables.tf
new file mode 100644
index 0000000..ab59478
--- /dev/null
+++ b/examples/pg-list-python/variables.tf
@@ -0,0 +1,14 @@
+# 2026-03-11
+# variables.tf
+
+variable "token" {
+  description = "JWT токен облака"
+  type        = string
+  sensitive   = true
+}
+
+variable "pg_dsn" {
+  description = "DSN подключения к PostgreSQL"
+  type        = string
+  default     = "postgres://sless:sless-pg-password@postgres.sless.svc.cluster.local:5432/sless?sslmode=disable"
+}