PowerShell 技能连载 - OpenAPI 集成技巧

在 PowerShell 中集成 OpenAPI 是一项重要任务，本文将介绍一些实用的 OpenAPI 集成技巧。

首先，让我们看看基本的 OpenAPI 操作：

# 创建 OpenAPI 客户端生成函数
function New-OpenAPIClient {
    param(
        [string]$OpenAPISpec,
        [string]$OutputPath,
        [string]$ClientName,
        [string]$Namespace
    )
    
    try {
        $swagger = Get-Content $OpenAPISpec -Raw | ConvertFrom-Json
        
        $clientCode = @"
using System;
using System.Net.Http;
using System.Threading.Tasks;
using System.Text.Json;

namespace $Namespace {
    public class $ClientName {
        private readonly HttpClient _client;
        private readonly string _baseUrl;
        
        public $ClientName(string baseUrl) {
            _baseUrl = baseUrl;
            _client = new HttpClient();
        }
        
        // API 方法将在这里生成
    }
}
"@
        
        $clientCode | Out-File -FilePath "$OutputPath\$ClientName.cs" -Encoding UTF8
        Write-Host "OpenAPI 客户端生成成功：$OutputPath\$ClientName.cs"
    }
    catch {
        Write-Host "OpenAPI 客户端生成失败：$_"
    }
}

OpenAPI 验证：

# 创建 OpenAPI 规范验证函数
function Test-OpenAPISpec {
    param(
        [string]$OpenAPISpec,
        [string[]]$ValidationRules
    )
    
    try {
        $swagger = Get-Content $OpenAPISpec -Raw | ConvertFrom-Json
        $results = @()
        
        foreach ($rule in $ValidationRules) {
            switch ($rule) {
                'Version' {
                    if (-not $swagger.openapi) {
                        $results += "OpenAPI 版本未指定"
                    }
                }
                'Paths' {
                    if (-not $swagger.paths) {
                        $results += "未定义任何 API 路径"
                    }
                }
                'Schemas' {
                    if (-not $swagger.components.schemas) {
                        $results += "未定义任何数据模型"
                    }
                }
                'Security' {
                    if (-not $swagger.security) {
                        $results += "未定义安全要求"
                    }
                }
            }
        }
        
        return [PSCustomObject]@{
            SpecFile = $OpenAPISpec
            ValidationResults = $results
            IsValid = $results.Count -eq 0
        }
    }
    catch {
        Write-Host "OpenAPI 规范验证失败：$_"
    }
}

OpenAPI 文档生成：

# 创建 OpenAPI 文档生成函数
function New-OpenAPIDoc {
    param(
        [string]$OpenAPISpec,
        [string]$OutputPath,
        [ValidateSet('HTML', 'Markdown', 'PDF')]
        [string]$Format
    )
    
    try {
        $swagger = Get-Content $OpenAPISpec -Raw | ConvertFrom-Json
        
        switch ($Format) {
            'HTML' {
                $template = Get-Content ".\templates\openapi-html.html" -Raw
                $doc = $template.Replace("{{spec}}", $swagger)
                $doc | Out-File -FilePath "$OutputPath\api-doc.html" -Encoding UTF8
            }
            'Markdown' {
                $doc = "# API 文档`n`n"
                foreach ($path in $swagger.paths.PSObject.Properties) {
                    $doc += "## $($path.Name)`n`n"
                    foreach ($method in $path.Value.PSObject.Properties) {
                        $doc += "### $($method.Name)`n`n"
                        $doc += "**描述：** $($method.Value.summary)`n`n"
                        $doc += "**参数：**`n`n"
                        foreach ($param in $method.Value.parameters) {
                            $doc += "- $($param.name) ($($param.in)): $($param.description)`n"
                        }
                        $doc += "`n"
                    }
                }
                $doc | Out-File -FilePath "$OutputPath\api-doc.md" -Encoding UTF8
            }
            'PDF' {
                # 使用 Markdown 生成 PDF
                $markdown = New-OpenAPIDoc -OpenAPISpec $OpenAPISpec -OutputPath $OutputPath -Format Markdown
                pandoc "$OutputPath\api-doc.md" -o "$OutputPath\api-doc.pdf"
            }
        }
        
        Write-Host "OpenAPI 文档生成成功：$OutputPath"
    }
    catch {
        Write-Host "OpenAPI 文档生成失败：$_"
    }
}

OpenAPI 测试用例生成：

# 创建 OpenAPI 测试用例生成函数
function New-OpenAPITests {
    param(
        [string]$OpenAPISpec,
        [string]$OutputPath,
        [string]$TestFramework
    )
    
    try {
        $swagger = Get-Content $OpenAPISpec -Raw | ConvertFrom-Json
        
        switch ($TestFramework) {
            'Pester' {
                $testCode = "Describe 'API Tests' {`n"
                foreach ($path in $swagger.paths.PSObject.Properties) {
                    foreach ($method in $path.Value.PSObject.Properties) {
                        $testCode += "    It 'Should $($method.Value.summary)' {`n"
                        $testCode += "        # 测试代码将在这里生成`n"
                        $testCode += "    }`n"
                    }
                }
                $testCode += "}"
                $testCode | Out-File -FilePath "$OutputPath\api.tests.ps1" -Encoding UTF8
            }
            'xUnit' {
                $testCode = "using Xunit;`n`n"
                $testCode += "public class APITests {`n"
                foreach ($path in $swagger.paths.PSObject.Properties) {
                    foreach ($method in $path.Value.PSObject.Properties) {
                        $testCode += "    [Fact]`n"
                        $testCode += "    public void Should_$($method.Value.summary.Replace(' ', '_'))() {`n"
                        $testCode += "        // 测试代码将在这里生成`n"
                        $testCode += "    }`n"
                    }
                }
                $testCode += "}"
                $testCode | Out-File -FilePath "$OutputPath\ApiTests.cs" -Encoding UTF8
            }
        }
        
        Write-Host "OpenAPI 测试用例生成成功：$OutputPath"
    }
    catch {
        Write-Host "OpenAPI 测试用例生成失败：$_"
    }
}

OpenAPI 监控：

# 创建 OpenAPI 监控函数
function Monitor-OpenAPIEndpoints {
    param(
        [string]$OpenAPISpec,
        [string]$BaseUrl,
        [int]$Interval = 300,
        [int]$Duration = 3600
    )
    
    try {
        $swagger = Get-Content $OpenAPISpec -Raw | ConvertFrom-Json
        $endTime = Get-Date
        $startTime = $endTime.AddSeconds(-$Duration)
        $results = @()
        
        while ($startTime -lt $endTime) {
            foreach ($path in $swagger.paths.PSObject.Properties) {
                foreach ($method in $path.Value.PSObject.Properties) {
                    $url = "$BaseUrl$($path.Name)"
                    $response = Invoke-RestMethod -Uri $url -Method $method.Name
                    
                    $results += [PSCustomObject]@{
                        Time = Get-Date
                        Endpoint = $url
                        Method = $method.Name
                        StatusCode = $response.StatusCode
                        ResponseTime = $response.Time
                    }
                }
            }
            
            $startTime = $startTime.AddSeconds($Interval)
            Start-Sleep -Seconds $Interval
        }
        
        return [PSCustomObject]@{
            BaseUrl = $BaseUrl
            Duration = $Duration
            Interval = $Interval
            Results = $results
        }
    }
    catch {
        Write-Host "OpenAPI 监控失败：$_"
    }
}

这些技巧将帮助您更有效地集成 OpenAPI。记住，在处理 OpenAPI 时，始终要注意版本兼容性和安全性。同时，建议使用适当的错误处理和日志记录机制来跟踪所有操作。