page:guides:quarkus:private file access

Enforce private-file authorization for Quarkus

Summary

Private file access for a Quarkus app on Ample. Verified on Quarkus: a role-to-document access model with negative tests (401, 403) and an authorized private-bucket round-trip (private=ok). Build and start: ./mvnw -q -DskipTests package producing one uber-jar (quarkus.package.jar.type=uber-jar), then java -jar on the jvm-21 template (Temurin JDK 21) with quarkus.http.port read from PORT.

Workflow Steps

Build and start

./mvnw -q -DskipTests package producing one uber-jar (quarkus.package.jar.type=uber-jar), then java -jar on the jvm-21 template (Temurin JDK 21) with quarkus.http.port read from PORT; the server must bind 0.0.0.0 on PORT.

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.
ample deploy . --name --public --env S3_ENDPOINT=... --env S3_REGION=... --env S3_BUCKET=... --env S3_ACCESS_KEY_ID=... --env S3_SECRET_ACCESS_KEY=...

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Return 401 for unauthenticated requests and 403 for the wrong role; keep the bucket unpublished and stream objects through the app.

Verify

Fetch the live URL and /p/private-document-library on the example; on failure read the build and runtime logs.
ample logs --kind build

Prerequisites

A Quarkus project (./mvnw -q -DskipTests package producing one uber-jar (quarkus.package.jar.type=uber-jar), then java -jar on the jvm-21 template (Temurin JDK 21) with quarkus.http.port read from PORT)
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

Examples

Quarkus pattern fixture

Description: Verified private file access on Quarkus.
Source Reference: tests/deploy-canaries/quarkus-patterns

Success Checks

Description: App responds on its public URL
Kind: http_get
Path: /
Expect: ample canary quarkus patterns
Description: Private-document-library check from the example
Kind: http_get
Path: /p/private-document-library
Expect: see the pattern fixture checks

Limitations

Verified on the jvm-21 template at s-1vcpu-2gb; other sizes and Quarkus 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
Basis: size prices from pricing.toml (loaded by the API) at build revision 1ac5595375130d45290090e82ed0f554ccd45405-dirty
Components:
- Name: app server
  Size: s-1vcpu-1gb
  Quantity: 1.0
  Monthly Amount: 5.0
- Name: managed PostgreSQL database
  Size: s-1vcpu-1gb
  Quantity: 1.0
  Monthly Amount: 5.0
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

Kind: canary_run
Summary: Quarkus pattern fixture deployed on Ample (./mvnw -q -DskipTests package producing one uber-jar (quarkus.package.jar.type=uber-jar), then java -jar on the jvm-21 template (Temurin JDK 21) with quarkus.http.port read from PORT); for this guide: a role-to-document access model with negative tests (401, 403) and an authorized private-bucket round-trip (private=ok).
Observed At: 2026-09-21T00:35:31Z
Implementation Revision: c6c81daa9272c95c5ce381005ba7347a341e578f-dirty (CLI 0.1.21)
Expires At: 2027-03-20T00:35:31Z
Scope:
- Checks: [/p/private-document-library]
- Template: jvm-21

MCP Binding

Registry Reference: mcp:ample_deploy
Tool Name: ample_deploy
Schema Hash: 876465fce906da0c224d62961d3343064108ebe30af80cf1b87094974e948853
Observed At: 2026-09-21T03:19:59.461917+00:00
Implementation Revision: 49962bcade4f
Required Scopes: [servers:write, databases:read, buckets:read]
Binding State: current

Unknowns

Region availability is unknown until a verified region fact is recorded
Compliance attestations are unknown; none are claimed

Formats

HTML: https://ample.computer/guides/quarkus/private-file-access
Markdown: https://ample.computer/guides/quarkus/private-file-access.md
JSON: https://api.ample.computer/v1/catalog/recipes/page%3Aguides%3Aquarkus%3Aprivate-file-access