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部署到 AWS S3 + CloudFront ​

在 AWS 上托管 BentoPDF,获得最大的控制力和可扩展性。

架构 ​

User → CloudFront (CDN) → S3 (Static Files)

第 1 步:创建 S3 存储桶 ​

bash
# Create bucket
aws s3 mb s3://your-bentopdf-bucket --region us-east-1

# Enable static website hosting
aws s3 website s3://your-bentopdf-bucket \
  --index-document index.html \
  --error-document index.html

第 2 步:构建并上传 ​

bash
# Build the project (optionally with custom branding)
# VITE_BRAND_NAME="AcmePDF" VITE_BRAND_LOGO="images/acme-logo.svg" npm run build
npm run build

# Sync to S3
aws s3 sync dist/ s3://your-bentopdf-bucket \
  --delete \
  --cache-control "max-age=31536000"

# Set correct MIME types for WASM
aws s3 cp s3://your-bentopdf-bucket/ s3://your-bentopdf-bucket/ \
  --recursive \
  --exclude "*" \
  --include "*.wasm" \
  --content-type "application/wasm" \
  --metadata-directive REPLACE

# Set correct MIME type for ES module files (.mjs)
# S3 defaults .mjs to application/octet-stream, which browsers refuse to
# execute as ES modules. The bundled PDF viewer (Sign PDF, Form Filler)
# ships ES modules with .mjs extensions and will fail without this step.
aws s3 cp s3://your-bentopdf-bucket/ s3://your-bentopdf-bucket/ \
  --recursive \
  --exclude "*" \
  --include "*.mjs" \
  --content-type "application/javascript" \
  --metadata-directive REPLACE

第 3 步:创建 CloudFront 分配 ​

bash
aws cloudfront create-distribution \
  --origin-domain-name your-bentopdf-bucket.s3.amazonaws.com \
  --default-root-object index.html

或者使用 AWS 控制台:

  1. 前往 CloudFront → Create distribution
  2. Origin domain:选择您的 S3 存储桶
  3. 启用 "Origin Access Control"
  4. Default root object:index.html
  5. 创建分配

第 3b 步:响应头策略(LibreOffice WASM 必需) ​

基于 LibreOffice 的转换(Word、Excel、PowerPoint 转 PDF)需要 SharedArrayBuffer,而这需要特定的响应头。请创建一个 CloudFront 响应头策略(Response Headers Policy):

  1. 前往 CloudFront → Policies → Response headers
  2. 创建包含以下响应头的自定义策略:
响应头值
Cross-Origin-Embedder-Policyrequire-corp
Cross-Origin-Opener-Policysame-origin
Cross-Origin-Resource-Policycross-origin
  1. 将该策略附加到分配的默认缓存行为

或者通过 CLI:

bash
aws cloudfront create-response-headers-policy \
  --response-headers-policy-config '{
    "Name": "BentoPDF-COEP-COOP",
    "CustomHeadersConfig": {
      "Quantity": 3,
      "Items": [
        {"Header": "Cross-Origin-Embedder-Policy", "Value": "require-corp", "Override": true},
        {"Header": "Cross-Origin-Opener-Policy", "Value": "same-origin", "Override": true},
        {"Header": "Cross-Origin-Resource-Policy", "Value": "cross-origin", "Override": true}
      ]
    }
  }'

第 3c 步:预压缩 WASM 文件的 S3 元数据 ​

LibreOffice WASM 文件是预压缩的(.wasm.gz、.data.gz)。请设置正确的 Content-Type 和 Content-Encoding,让浏览器能够正确解压:

bash
# Set correct headers for soffice.wasm.gz
aws s3 cp s3://your-bentopdf-bucket/libreoffice-wasm/soffice.wasm.gz \
  s3://your-bentopdf-bucket/libreoffice-wasm/soffice.wasm.gz \
  --content-type "application/wasm" \
  --content-encoding "gzip" \
  --metadata-directive REPLACE

# Set correct headers for soffice.data.gz
aws s3 cp s3://your-bentopdf-bucket/libreoffice-wasm/soffice.data.gz \
  s3://your-bentopdf-bucket/libreoffice-wasm/soffice.data.gz \
  --content-type "application/octet-stream" \
  --content-encoding "gzip" \
  --metadata-directive REPLACE

重要

如果没有响应头策略,SharedArrayBuffer 将不可用,LibreOffice WASM 转换会卡在约 55%。如果 .gz 文件没有正确的 Content-Encoding,浏览器会收到原始的 gzip 字节,WASM 编译将失败。

第 4 步:S3 存储桶策略 ​

允许 CloudFront 访问存储桶:

json
{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "AllowCloudFrontAccess",
      "Effect": "Allow",
      "Principal": {
        "Service": "cloudfront.amazonaws.com"
      },
      "Action": "s3:GetObject",
      "Resource": "arn:aws:s3:::your-bentopdf-bucket/*",
      "Condition": {
        "StringEquals": {
          "AWS:SourceArn": "arn:aws:cloudfront::ACCOUNT_ID:distribution/DISTRIBUTION_ID"
        }
      }
    }
  ]
}

第 5 步:自定义错误页面 ​

将 404 配置为返回 index.html,以支持 SPA 路由:

  1. CloudFront → Error pages
  2. 创建自定义错误响应:
    • HTTP error code:404
    • Response page path:/index.html
    • HTTP response code:200

成本估算 ​

资源预估成本
S3 存储(约 500MB)约 $0.01/月
CloudFront(1TB 流量)约 $85/月
CloudFront(10GB 流量)约 $0.85/月

TIP

对于不常访问的文件,可使用 S3 Intelligent Tiering 来优化成本。

使用 Terraform 自动化 ​

hcl
# main.tf
resource "aws_s3_bucket" "bentopdf" {
  bucket = "your-bentopdf-bucket"
}

resource "aws_cloudfront_distribution" "bentopdf" {
  origin {
    domain_name = aws_s3_bucket.bentopdf.bucket_regional_domain_name
    origin_id   = "S3Origin"
  }

  enabled             = true
  default_root_object = "index.html"

  default_cache_behavior {
    allowed_methods  = ["GET", "HEAD"]
    cached_methods   = ["GET", "HEAD"]
    target_origin_id = "S3Origin"

    viewer_protocol_policy = "redirect-to-https"
  }
}

采用 AGPL-3.0 与商业许可双重授权。