Add tongyi-langchain solution with PAI-EAS and Qwen model

solution/tech-solution/tongyi-langchain/README.md

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+## Introduction
+
+<!-- DOCS_DESCRIPTION_CN -->
+本示例用于实现解决方案[通义千问和 LangChain 搭建对话服务](https://www.aliyun.com/solution/tech-solution/tongyi-langchain), 涉及到PAI-EAS实例（PAI-EAS）、专有网络（VPC）、交换机（VSwitch）、文件存储（NAS）等资源的创建。
+<!-- DOCS_DESCRIPTION_CN -->
+
+<!-- DOCS_DESCRIPTION_EN -->
+This example is used to implement solution [Building a conversation service with Qwen and LangChain](https://www.aliyun.com/solution/tech-solution/tongyi-langchain), which involves the creation and deployment of resources such as PAI-EAS,Virtual Private Cloud (VPC), VSwitch, File Storage NAS(NAS).
+<!-- DOCS_DESCRIPTION_EN -->
+## Providers
+
+| Name | Version |
+|------|---------|
+| <a name="provider_alicloud"></a> [alicloud](#provider\_alicloud) | n/a |
+| <a name="provider_random"></a> [random](#provider\_random) | n/a |
+
+## Modules
+
+No modules.
+
+## Resources
+
+| Name | Type |
+|------|------|
+| [alicloud_nas_access_group.nas_access_group](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/resources/nas_access_group) | resource |
+| [alicloud_nas_access_rule.nas_access_rule](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/resources/nas_access_rule) | resource |
+| [alicloud_nas_file_system.nas_file_system](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/resources/nas_file_system) | resource |
+| [alicloud_nas_mount_target.nas_mount_target](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/resources/nas_mount_target) | resource |
+| [alicloud_pai_service.pai_eas](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/resources/pai_service) | resource |
+| [alicloud_security_group.security_group](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/resources/security_group) | resource |
+| [alicloud_security_group_rule.allow_http](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/resources/security_group_rule) | resource |
+| [alicloud_security_group_rule.allow_https](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/resources/security_group_rule) | resource |
+| [alicloud_security_group_rule.allow_rdp](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/resources/security_group_rule) | resource |
+| [alicloud_vpc.vpc](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/resources/vpc) | resource |
+| [alicloud_vswitch.vswitch](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/resources/vswitch) | resource |
+| [random_string.random_string](https://registry.terraform.io/providers/hashicorp/random/latest/docs/resources/string) | resource |
+| [alicloud_regions.current](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/data-sources/regions) | data source |
+
+## Inputs
+
+| Name | Description | Type | Default | Required |
+|------|-------------|------|---------|:--------:|
+| <a name="input_instance_type"></a> [instance\_type](#input\_instance\_type) | PAI-EAS实例规格 | `string` | `"ml.gu7i.c8m30.1-gu30"` | no |
+| <a name="input_region"></a> [region](#input\_region) | 地域，例如：cn-hangzhou。所有地域及可用区请参见文档：https://help.aliyun.com/document_detail/40654.html#09f1dc16b0uke | `string` | `"cn-hangzhou"` | no |
+| <a name="input_zone_id"></a> [zone\_id](#input\_zone\_id) | 可用区ID | `string` | `"cn-hangzhou-f"` | no |
+<!-- END_TF_DOCS -->

solution/tech-solution/tongyi-langchain/main.tf

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+provider "alicloud" {
+  region = var.region
+}
+
+# 生成随机字符串
+resource "random_string" "random_string" {
+  length  = 8
+  special = false
+  upper   = false
+  numeric = true
+  lower   = true
+}
+
+# VPC
+resource "alicloud_vpc" "vpc" {
+  cidr_block = "192.168.0.0/16"
+  vpc_name   = "vpc_qwen_demo"
+}
+
+# VSwitch
+resource "alicloud_vswitch" "vswitch" {
+  zone_id      = var.zone_id
+  vpc_id       = alicloud_vpc.vpc.id
+  cidr_block   = "192.168.0.0/24"
+  vswitch_name = "vswitch_qwen_demo"
+}
+
+# 安全组
+resource "alicloud_security_group" "security_group" {
+  vpc_id              = alicloud_vpc.vpc.id
+  security_group_name = "sg_qwen_demo"
+  security_group_type = "normal"
+}
+
+# 安全组入站规则 - 80端口
+resource "alicloud_security_group_rule" "allow_http" {
+  type              = "ingress"
+  ip_protocol       = "tcp"
+  nic_type          = "intranet"
+  policy            = "accept"
+  port_range        = "80/80"
+  priority          = 1
+  security_group_id = alicloud_security_group.security_group.id
+  cidr_ip           = "0.0.0.0/0"
+}
+
+# 安全组入站规则 - 443端口
+resource "alicloud_security_group_rule" "allow_https" {
+  type              = "ingress"
+  ip_protocol       = "tcp"
+  nic_type          = "intranet"
+  policy            = "accept"
+  port_range        = "443/443"
+  priority          = 1
+  security_group_id = alicloud_security_group.security_group.id
+  cidr_ip           = "0.0.0.0/0"
+}
+
+# 安全组入站规则 - 3389端口
+resource "alicloud_security_group_rule" "allow_rdp" {
+  type              = "ingress"
+  ip_protocol       = "tcp"
+  nic_type          = "intranet"
+  policy            = "accept"
+  port_range        = "3389/3389"
+  priority          = 1
+  security_group_id = alicloud_security_group.security_group.id
+  cidr_ip           = "0.0.0.0/0"
+}
+
+# NAS文件系统
+resource "alicloud_nas_file_system" "nas_file_system" {
+  protocol_type    = "NFS"
+  file_system_type = "standard"
+  storage_type     = "Performance"
+  zone_id          = var.zone_id
+  description      = "NAS文件系统用于Qwen和LangChain对话模型"
+}
+
+# NAS访问组
+resource "alicloud_nas_access_group" "nas_access_group" {
+  access_group_type = "Vpc"
+  access_group_name = "nas-access-group-qwen-demo"
+}
+
+# NAS挂载点
+resource "alicloud_nas_mount_target" "nas_mount_target" {
+  vpc_id            = alicloud_vpc.vpc.id
+  vswitch_id        = alicloud_vswitch.vswitch.id
+  network_type      = "Vpc"
+  access_group_name = alicloud_nas_access_group.nas_access_group.access_group_name
+  file_system_id    = alicloud_nas_file_system.nas_file_system.id
+
+  depends_on = [alicloud_nas_access_rule.nas_access_rule]
+}
+
+# NAS访问规则
+resource "alicloud_nas_access_rule" "nas_access_rule" {
+  source_cidr_ip    = "0.0.0.0/0"
+  access_group_name = alicloud_nas_access_group.nas_access_group.access_group_name
+}
+
+# PAI-EAS服务
+resource "alicloud_pai_service" "pai_eas" {
+  service_config = jsonencode({
+    metadata = {
+      name              = "qwen_demo_${random_string.random_string.result}"
+      instance          = 1
+      enable_webservice = "true"
+      cpu               = 8
+      gpu               = 1
+      memory            = 30000
+    }
+    cloud = {
+      computing = {
+        instance_type = var.instance_type
+      }
+    }
+    containers = [
+      {
+        image  = "eas-registry-vpc.${data.alicloud_regions.current.regions.0.id}.cr.aliyuncs.com/pai-eas/chat-llm-webui:2.1"
+        script = "python webui/webui_server.py --port=8000 --model-path=Qwen/Qwen-7B-Chat"
+        port   = 8000
+      }
+    ]
+  })
+
+  timeouts {
+    create = "20m"
+  }
+}
+
+# 获取当前区域信息
+data "alicloud_regions" "current" {
+  current = true
+} 

solution/tech-solution/tongyi-langchain/outputs.tf

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+output "vpc_id" {
+  description = "VPC ID"
+  value       = alicloud_vpc.vpc.id
+}
+
+output "vswitch_id" {
+  description = "VSwitch ID"
+  value       = alicloud_vswitch.vswitch.id
+}
+
+output "security_group_id" {
+  description = "安全组ID"
+  value       = alicloud_security_group.security_group.id
+}
+
+output "nas_file_system_id" {
+  description = "NAS文件系统ID"
+  value       = alicloud_nas_file_system.nas_file_system.id
+}
+
+output "nas_mount_target_domain" {
+  description = "NAS挂载点域名"
+  value       = alicloud_nas_mount_target.nas_mount_target.mount_target_domain
+}
+
+output "pai_service_id" {
+  description = "PAI-EAS服务ID"
+  value       = alicloud_pai_service.pai_eas.id
+}
+
+output "service_name" {
+  description = "PAI-EAS服务名称"
+  value       = "qwen_demo_${random_string.random_string.result}"
+}
+
+output "service_status" {
+  description = "PAI-EAS服务状态"
+  value       = alicloud_pai_service.pai_eas.status
+}
+
+output "create_time" {
+  description = "PAI-EAS服务创建时间"
+  value       = alicloud_pai_service.pai_eas.create_time
+}
+
+output "region_id" {
+  description = "部署区域ID"
+  value       = data.alicloud_regions.current.regions.0.id
+} 

solution/tech-solution/tongyi-langchain/variables.tf

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+variable "region" {
+  type        = string
+  default     = "cn-hangzhou"
+  description = "地域，例如：cn-hangzhou。所有地域及可用区请参见文档：https://help.aliyun.com/document_detail/40654.html#09f1dc16b0uke"
+}
+
+variable "zone_id" {
+  type        = string
+  description = "可用区ID"
+  default     = "cn-hangzhou-f"
+}
+
+variable "instance_type" {
+  type        = string
+  description = "PAI-EAS实例规格"
+  default     = "ml.gu7i.c8m30.1-gu30"
+
+  validation {
+    condition = contains([
+      "ml.gu7i.c8m30.1-gu30",
+      "ecs.gn6e-c12g1.3xlarge",
+      "ecs.gn7i-c8g1.2xlarge",
+      "ecs.gn6i-c16g1.4xlarge",
+      "ecs.gn7i-c16g1.4xlarge",
+      "ecs.gn6i-c8g1.2xlarge",
+      "ecs.gn6i-c4g1.xlarge"
+    ], var.instance_type)
+    error_message = "实例类型必须是以下之一：ml.gu7i.c8m30.1-gu30, ecs.gn6e-c12g1.3xlarge, ecs.gn7i-c8g1.2xlarge, ecs.gn6i-c16g1.4xlarge, ecs.gn6i-c8g1.2xlarge, ecs.gn6i-c4g1.xlarge"
+  }
+}