Enforce private-file authorization for Astro

Summary

Private file access for an Astro app on Ample. Verified on Astro: a role-to-document access model with negative tests (401, 403) and an authorized private-bucket round-trip (private=ok). Build and start: astro build with the @astrojs/node standalone adapter then node ./dist/server/entry.mjs on the node-22 template.

Representative Queries

• Enforce private-file authorization for Astro
• Where can I host Enforce private-file authorization built with Astro?
• I need application identity integration, per-file access rules and negative authorization tests.

Resource Requirements

• primitive:compute
• primitive:postgres
• primitive:s3-compatible-object-storage

Infrastructure Requirements

• Compute: Apps run in isolated x86_64 Firecracker microVMs that auto-pause when idle and wake on request; sizes are the priced VM sizes.
• Postgres: Managed PostgreSQL 16 runs in its own microVM and is auto-provisioned when an app needs a database and no DATABASE_URL is supplied.
• S3-compatible object storage: Buckets are S3-compatible with issued credentials; PutObject and GetObject are verified by canary. Other S3 operations are not verified.

Prerequisites

• A Astro project (astro build with the @astrojs/node standalone adapter then node ./dist/server/entry.mjs on the node-22 template)
• A PostgreSQL driver reading DATABASE_URL at runtime
• A bucket from ample bucket create with credentials passed as encrypted S3_* environment variables
• An Ample account token with servers:write, databases:read, buckets:read

Workflow Steps

1. Build and start
   • astro build with the @astrojs/node standalone adapter then node ./dist/server/entry.mjs on the node-22 template; the server must bind 0.0.0.0 on PORT.
2. Create the bucket and pass its credentials
   • Create it once with ample bucket create, then pass endpoint, region, bucket and keys with --env; use path-style addressing.
   • Command: ample deploy . --name --public --env S3_ENDPOINT=... --env S3_REGION=... --env S3_BUCKET=... --env S3_ACCESS_KEY_ID=... --env S3_SECRET_ACCESS_KEY=...
3. Authorize before touching storage
   • Return 401 for unauthenticated requests and 403 for the wrong role; keep the bucket unpublished and stream objects through the app.
4. Verify
   • Fetch the live URL and /p/private-document-library on the example; on failure read the build and runtime logs.
   • Command: ample logs --kind build

Success Checks

• App responds on its public URL: expect":"ample canary astro patterns
• Private-document-library check from the example: expect":"see the pattern fixture checks

Limitations

• Verified on the node-22 template at s-1vcpu-1gb; other sizes and Astro major versions are not verified.
• Region, compliance attestations and request-duration limits are unknown and not claimed.
• Managed PostgreSQL 16 only; extensions, connection limits and backup or restore procedures are not verified.
• PutObject and GetObject with path-style addressing are verified; other S3 operations are not.

Cost Estimate

• Currency: USD
• Monthly Amount: 10.0
• Components:
  • app server: 1.0 @ 5.0 USD/month
  • managed PostgreSQL database: 1.0 @ 5.0 USD/month
• Note: Always-on monthly price of the tested sizes; apps auto-pause when idle. Buckets are allocation-priced per quota and not included.

Evidence Summary

• Verified private file access on Astro. Summary: A role-to-document access model with negative tests (401, 403) and an authorized private-bucket round-trip (private=ok).

Last Verified At

2026-09-20T03:31:44Z

Formats

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