{"catalogRevision":"cat_f13ab9a494120b5e","recipeId":"page:recipes:ai-chat-application:spring-boot:artifact-storage","recipeRevision":"r1","canonicalPath":"/recipes/ai-chat-application/spring-boot/artifact-storage","label":"Host ai chat application with Spring Boot: stored input and output artifacts","family":"Workload recipe","summary":"Deploy a ai chat application built with Spring Boot on Ample using the generated downloads 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. Verified on Spring Boot: an export query rendered to a CSV artifact stored with metadata in a private bucket and returned only to an authorized caller (401 without token, export=ok rows=3). Not separately tested: your export formats, retention policy and entitlement model; treat the ai chat application-specific behavior as your application code.","representativeQueries":["Host ai chat application with Spring Boot: stored input and output artifacts","Where can I host AI chat application built with Spring Boot?","I need an input/output artifact contract, object metadata and access boundaries."],"breadcrumbIds":["discovery","workload","workload:agents-and-backends","workload:ai-chat-application","page:recipes:ai-chat-application:spring-boot:artifact-storage"],"breadcrumbs":[{"id":"discovery","label":"Agent hosting discovery","canonicalPath":"/discover/discovery","kind":"root"},{"id":"workload","label":"Applications and workloads","canonicalPath":"/discover/workload","kind":"facet"},{"id":"workload:agents-and-backends","label":"Agents and backends","canonicalPath":"/discover/workload/agents-and-backends","kind":"group"},{"id":"workload:ai-chat-application","label":"AI chat application","canonicalPath":"/discover/workload/ai-chat-application","kind":"atom"},{"id":"page:recipes:ai-chat-application:spring-boot:artifact-storage","label":"Host ai chat application with Spring Boot: stored input and output artifacts","canonicalPath":"/recipes/ai-chat-application/spring-boot/artifact-storage","kind":"recipe"}],"parentIds":["workload:ai-chat-application","stack:framework-spring-boot","pattern:generated-downloads","intent:deploy-ai-app"],"parents":[{"id":"workload:ai-chat-application","label":"AI chat application","canonicalPath":"/discover/workload/ai-chat-application","kind":"atom"},{"id":"stack:framework-spring-boot","label":"Spring Boot","canonicalPath":"/discover/stack/framework-spring-boot","kind":"atom"},{"id":"pattern:generated-downloads","label":"Generated downloads","canonicalPath":"/discover/pattern/generated-downloads","kind":"atom"},{"id":"intent:deploy-ai-app","label":"Deploy AI app","canonicalPath":"/discover/intent/deploy-ai-app","kind":"atom"}],"resourceRequirements":["primitive:compute","primitive:postgres","primitive:s3-compatible-object-storage"],"infrastructureRequirements":[{"primitiveId":"primitive:compute","label":"Compute","canonicalPath":"/discover/primitive/compute","status":"verified","summary":"Apps run in isolated x86_64 Firecracker microVMs that auto-pause when idle and wake on request; sizes are the priced VM sizes."},{"primitiveId":"primitive:postgres","label":"Postgres","canonicalPath":"/discover/primitive/postgres","status":"verified","summary":"Managed PostgreSQL 16 runs in its own microVM and is auto-provisioned when an app needs a database and no DATABASE_URL is supplied."},{"primitiveId":"primitive:s3-compatible-object-storage","label":"S3-compatible object storage","canonicalPath":"/discover/primitive/s3-compatible-object-storage","status":"verified","summary":"Buckets are S3-compatible with issued credentials; PutObject and GetObject are verified by canary. Other S3 operations are not verified."}],"framework":"Spring Boot","workload":"AI chat application","releaseStatus":"published","supportStatus":"verified","executionStatus":"ready","docsOnly":false,"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","An Ample account token with servers:write, databases:read, buckets:read"],"testedConfiguration":{"template":"jvm-21","runtime":"java","size":"s-1vcpu-2gb","build":"./mvnw -q -DskipTests package","start":"java -jar $(ls target/*.jar | grep -v -- '-plain' | head -n 1)"},"inputSchema":{"additionalProperties":false,"properties":{"env":{"description":"Encrypted environment variables (bucket credentials, secrets)","items":{"pattern":"^[A-Z][A-Z0-9_]*=.*$","type":"string"},"maxItems":50,"type":"array"},"name":{"description":"App name","maxLength":63,"minLength":1,"pattern":"^[a-z0-9-]+$","type":"string"},"path":{"description":"Project directory or ample.toml service","maxLength":512,"minLength":1,"type":"string"},"release_command":{"description":"Migration command run before activation","maxLength":512,"type":"string"}},"required":["env","name","path"],"type":"object"},"outputSchema":null,"workflowSteps":[{"title":"Build and start","body":"./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."},{"title":"Implement the pattern on PostgreSQL","body":"The fixture's module implements generated downloads: an export query rendered to a CSV artifact stored with metadata in a private bucket and returned only to an authorized caller (401 without token, export=ok rows=3). Copy the approach into your schema; keep migrations idempotent and run them with --release-command."},{"title":"Wire object storage","body":"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."},{"title":"Deploy","body":"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.","command":"ample deploy . --name <app-name> --public --env S3_ENDPOINT=... --env S3_REGION=... --env S3_BUCKET=... --env S3_ACCESS_KEY_ID=... --env S3_SECRET_ACCESS_KEY=..."},{"title":"Verify","body":"Fetch the live URL and the pattern self-test route(s) (/p/generated-downloads) from the example; then run your own checks. On failure read `ample logs <deployment_id> --kind build` then `--kind runtime`.","command":"ample logs <deployment_id> --kind build"}],"examples":[{"title":"Spring Boot pattern fixture","description":"Multi-pattern Spring Boot app whose generated downloads module was checked live; the module is under tests/deploy-canaries/_pattern-modules.","sourceRef":"tests/deploy-canaries/spring-boot-patterns"}],"successChecks":[{"description":"app responds on its public URL","kind":"http_get","path":"/","expect":"ample canary spring boot patterns"},{"description":"generated-downloads self-test","kind":"http_get","path":"/p/generated-downloads","expect":"export=ok rows=3 (with ?token=...; 401 without)"}],"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 ai chat application itself (your export formats, retention policy and entitlement model) 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."],"costEstimate":{"currency":"USD","monthlyAmount":10.0,"authoritative":true,"basis":"size prices from pricing.toml (loaded by the API) at build revision 752d2a7584688a5d233b2c53d38307d289b04d3e","components":[{"name":"app server","size":"s-1vcpu-1gb","quantity":1.0,"monthlyAmount":5.0},{"name":"managed PostgreSQL database","size":"s-1vcpu-1gb","quantity":1.0,"monthlyAmount":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."},"evidenceSummary":[{"kind":"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 generated-downloads and configuration-secrets. Pattern proof: an export query rendered to a CSV artifact stored with metadata in a private bucket and returned only to an authorized caller (401 without token, export=ok rows=3).","observedAt":"2026-09-21T02:34:39Z","implementationRevision":"1d28ae0 (CLI 0.1.21)","expiresAt":"2027-03-20T02:34:39Z","scope":{"checks":["/p/generated-downloads"],"pattern":"pattern:generated-downloads","template":"jvm-21"}},{"kind":"canary_run","summary":"The same Spring Boot app deployed with a --release-command migration; the marker it created was readable after activation.","observedAt":"2026-09-20T22:49:19Z","implementationRevision":"af6f45adea26 (CLI af6f45a)","expiresAt":"2027-03-19T22:49:19Z","scope":{"pattern":"pattern:generated-downloads"}}],"lastVerifiedAt":"2026-09-21T02:34:39Z","mcpBinding":{"registryRef":"mcp:ample_deploy","toolName":"ample_deploy","schemaHash":"876465fce906da0c224d62961d3343064108ebe30af80cf1b87094974e948853","observedAt":"2026-09-22T00:31:22.774679+00:00","implementationRevision":"e6446ceea69b","requiredScopes":["servers:write","databases:read","buckets:read"],"bindingState":"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/recipes/ai-chat-application/spring-boot/artifact-storage","markdown":"https://ample.computer/recipes/ai-chat-application/spring-boot/artifact-storage.md","json":"https://api.ample.computer/v1/catalog/recipes/page%3Arecipes%3Aai-chat-application%3Aspring-boot%3Aartifact-storage"},"nextActions":[{"actionId":"browse-catalog","label":"Browse the catalog index","operationId":"catalog_index","method":"GET","relativePath":"/v1/catalog","origin":"api","parameters":{},"requiresAuthentication":false,"requiresApproval":false},{"actionId":"search-recipes","label":"Search published recipes by intent, stack and constraints","operationId":"search_recipes","method":"POST","relativePath":"/v1/catalog/search","origin":"api","parameters":{"body":{"limit":5,"query":"Host ai chat application with Spring Boot: stored input and output artifacts"}},"requiresAuthentication":false,"requiresApproval":false},{"actionId":"plan:page:recipes:ai-chat-application:spring-boot:artifact-storage","label":"Prepare a side-effect-free deployment plan for an authorized project","operationId":"plan_deployment","method":"POST","relativePath":"/v1/catalog/plan","origin":"api","parameters":{"body":{"inputs":{},"projectId":"<workspace or server id you own>","recipeId":"page:recipes:ai-chat-application:spring-boot:artifact-storage","recipeRevision":"r1"}},"requiresAuthentication":true,"requiresApproval":false},{"actionId":"auth-setup","label":"Read the existing agent authentication setup","operationId":"existing_auth_setup","method":"GET","relativePath":"/mcp/setup","origin":"api","parameters":{},"requiresAuthentication":false,"requiresApproval":false},{"actionId":"browse:workload:ai-chat-application","label":"Browse AI chat application","operationId":"browse_node","method":"GET","relativePath":"/v1/catalog/nodes/workload%3Aai-chat-application","origin":"api","parameters":{"nodeId":"workload:ai-chat-application"},"requiresAuthentication":false,"requiresApproval":false},{"actionId":"browse:stack:framework-spring-boot","label":"Browse Spring Boot","operationId":"browse_node","method":"GET","relativePath":"/v1/catalog/nodes/stack%3Aframework-spring-boot","origin":"api","parameters":{"nodeId":"stack:framework-spring-boot"},"requiresAuthentication":false,"requiresApproval":false},{"actionId":"browse:pattern:generated-downloads","label":"Browse Generated downloads","operationId":"browse_node","method":"GET","relativePath":"/v1/catalog/nodes/pattern%3Agenerated-downloads","origin":"api","parameters":{"nodeId":"pattern:generated-downloads"},"requiresAuthentication":false,"requiresApproval":false},{"actionId":"browse:intent:deploy-ai-app","label":"Browse Deploy AI app","operationId":"browse_node","method":"GET","relativePath":"/v1/catalog/nodes/intent%3Adeploy-ai-app","origin":"api","parameters":{"nodeId":"intent:deploy-ai-app"},"requiresAuthentication":false,"requiresApproval":false}]}