## Host Admin Dashboard with Spring Boot: Public Profile Assets

### Summary
Deploy an admin dashboard built with Spring Boot on Ample using the public image delivery pattern. Compute runs the app in an isolated microVM behind a public HTTPS URL, a managed PostgreSQL 16 database is auto-provisioned and injected as DATABASE_URL, a private S3-compatible bucket holds objects with credentials delivered as encrypted environment variables, and a published bucket serves public assets from the CDN host. Verified on Spring Boot: public objects in a published bucket served from the CDN URL, kept separate from private objects in an unpublished bucket that require authorization (private=ok only for the allowed role). Not separately tested: your image processing and profile-media rules; treat the admin dashboard-specific behavior as your application code.

### Representative Queries
- Host admin dashboard with Spring Boot: public profile assets
- Where can I host Admin dashboard built with Spring Boot?
- I need separate public profile media from private data, with CDN cache rules.

### Resource Requirements
- primitive:compute
- primitive:postgres
- primitive:s3-compatible-object-storage
- primitive:cdn

### Infrastructure Requirements
1. **Compute**  
   Apps run in isolated x86_64 Firecracker microVMs that auto-pause when idle and wake on request; sizes are the priced VM sizes.

2. **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.

3. **S3-Compatible Object Storage**  
   Buckets are S3-compatible with issued credentials; PutObject and GetObject are verified by canary. Other S3 operations are not verified.

4. **CDN**  
   The CDN host serves objects from published buckets. It does not front app compute and is not a cache or key-value store.

### Prerequisites
- A Spring Boot project that builds and starts with the documented commands (./mvnw -q -DskipTests package (or the Gradle wrapper) producing one application jar, then java -jar on the jvm-21 template (Temurin JDK 21) with server.port read from PORT).
- A PostgreSQL driver reading DATABASE_URL at runtime (auto-provisioned when omitted, or supplied with --env).
- A bucket from `ample bucket create` with its credentials passed as encrypted S3_* environment variables and a second, published bucket for public assets (CDN_*).
- An Ample account token with servers:write, databases:read, buckets:read.

### Workflow Steps
1. **Build and Start**  
   `./mvnw -q -DskipTests package` (or the Gradle wrapper) producing one application jar, then `java -jar` on the jvm-21 template (Temurin JDK 21) with server.port read from PORT. The server must bind 0.0.0.0 on PORT.

2. **Implement the Pattern on PostgreSQL**  
   The fixture's module implements public image delivery: public objects in a published bucket served from the CDN URL, kept separate from private objects in an unpublished bucket that require authorization (private=ok only for the allowed role). Copy the approach into your schema; keep migrations idempotent and run them with --release-command.

3. **Wire Object Storage**  
   Create the bucket(s), then pass endpoint, region, bucket and keys as --env values. Use path-style addressing. Keep private data in an unpublished bucket. Publish only the bucket that serves public assets and reference its CDN URL.

4. **Deploy**  
   Run the synchronous deploy once and read the result (exit 0 live, 1 failed, 2 blocked). Re-running with no change is a no-op.
   ```
   ample deploy . --name  --public --env S3_ENDPOINT=... --env S3_REGION=... --env S3_BUCKET=... --env S3_ACCESS_KEY_ID=... --env S3_SECRET_ACCESS_KEY=... --env CDN_PUBLIC_URL=...
   ```

5. **Verify**  
   Fetch the live URL and the pattern self-test route(s) (/p/public-media-library, /p/private-document-library) from the example; then run your own checks. On failure read `ample logs --kind build` then `--kind runtime`.
   ```
   ample logs --kind build
   ```

### Examples
- **Spring Boot Pattern Fixture**  
  Multi-pattern Spring Boot app whose public image delivery module was checked live; the module is under tests/deploy-canaries/_pattern-modules.
  - **Source Reference**: tests/deploy-canaries/spring-boot-patterns

### Success Checks
1. App responds on its public URL  
   - Kind: `http_get`, Path: `/`, Expect: `ample canary spring boot patterns`

2. Public-media-library self-test  
   - Kind: `http_get`, Path: `/p/public-media-library`, Expect: `a CDN URL whose content is served publicly`

3. Private-document-library self-test  
   - Kind: `http_get`, Path: `/p/private-document-library`, Expect: `private=ok (with ?role=owner; 401 without, 403 for viewer)`

### Limitations
- Verified on the jvm-21 template at s-1vcpu-2gb with the example fixture; other sizes, templates and Spring Boot major versions are not verified.
- The admin dashboard itself (your image processing and profile-media rules) is application code and was not separately tested; the pattern checks are what was verified.
- Region, compliance attestations and request-duration limits are unknown and not claimed.
- Apps auto-pause when idle and wake on the next request; always-on is an operator setting, not a plan feature.
- Managed PostgreSQL 16 only; extensions, connection limits and backup or restore procedures are not verified; apps and their databases are placed together.
- PutObject and GetObject with path-style addressing are verified; multipart upload, listing, presigned URLs and lifecycle rules are not.
- The CDN serves published-bucket objects only; cache rules, purge and TTL control are not verified (the fixture sets Cache-Control on upload and versions keys).

### Cost Estimate
- **Currency**: USD
- **Monthly Amount**: 10.0
- **Authoritative**: true
- **Basis**: size prices from pricing.toml (loaded by the API) at build revision 1ac5595375130d45290090e82ed0f554ccd45405-dirty
- **Components**:
  1. **App Server**  
     - Size: s-1vcpu-1gb
     - Quantity: 1.0
     - Monthly Amount: 5.0
  2. **Managed PostgreSQL Database**  
     - Size: s-1vcpu-1gb
     - Quantity: 1.0
     - Monthly Amount: 5.0
- **Note**: Always-on monthly price of the tested sizes; apps and databases auto-pause when idle. Buckets are allocation-priced per quota and not included.

### Evidence Summary
1. **Canary Run**  
   - Summary: Spring Boot pattern fixture deployed on Ample (./mvnw -q -DskipTests package (or the Gradle wrapper) producing one application jar, then java -jar on the jvm-21 template (Temurin JDK 21) with server.port read from PORT); checks passed for public-media-library, private-document-library and configuration-secrets. Pattern proof: public objects in a published bucket served from the CDN URL, kept separate from private objects in an unpublished bucket that require authorization (private=ok only for the allowed role).
   - Observed At: 2026-09-21T02:34:39Z
   - Implementation Revision: 1d28ae0-dirty (CLI 0.1.21)
   - Expires At: 2027-03-20T02:34:39Z

2. **Canary Run**  
   - Summary: The same Spring Boot app deployed with a --release-command migration; the marker it created was readable after activation.
   - Observed At: 2026-09-20T22:49:19Z
   - Implementation Revision: af6f45adea26-dirty (CLI af6f45a)
   - Expires At: 2027-03-19T22:49:19Z

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

### Formats
- **HTML**: [HTML Documentation](/content/recipes/admin-dashboard/spring-boot/public-profiles/index.html)
- **Markdown**: [Markdown Documentation](/content/recipes/admin-dashboard/spring-boot/public-profiles.md)
- **JSON**: [JSON API](https://api.ample.computer/v1/catalog/recipes/page%3Arecipes%3Aadmin-dashboard%3Aspring-boot%3Apublic-profiles)

### Next Actions
1. **Browse the Catalog Index**  
   - Method: GET
   - Relative Path: /v1/catalog

2. **Search Published Recipes**  
   - Method: POST
   - Relative Path: /v1/catalog/search
   - Parameters: {"body":{"limit":5,"query":"Host admin dashboard with Spring Boot: public profile assets"}}

3. **Prepare a Deployment Plan**  
   - Method: POST
   - Relative Path: /v1/catalog/plan
   - Parameters: {"body":{"inputs":{},"projectId":"","recipeId":"page:recipes:admin-dashboard:spring-boot:public-profiles","recipeRevision":"r1"}}

4. **Read Existing Auth Setup**  
   - Method: GET
   - Relative Path: /mcp/setup

5. **Browse Admin Dashboard**  
   - Method: GET
   - Relative Path: /v1/catalog/nodes/workload%3Aadmin-dashboard

6. **Browse Spring Boot**  
   - Method: GET
   - Relative Path: /v1/catalog/nodes/stack%3Aframework-spring-boot

7. **Browse Public Image Delivery**  
   - Method: GET
   - Relative Path: /v1/catalog/nodes/pattern%3Apublic-image-delivery

8. **Browse Deploy Web App**  
   - Method: GET
   - Relative Path: /v1/catalog/nodes/intent%3Adeploy-web-app