Jon Chery
031887ec56
Contract surface redesign: - New top-level fields: id (3-6 char acronym → stack.name), name (full → stack.title), infrastructure (map keyed by module name, replaces module:) - Drop uses: field (dead reference; version pin lives in CI workflow uses: line) - Drop top-level module/inputs (now nested under infrastructure map) - Per-module optional version (defaults to latest published from registry) - Multi-module contracts: one file deploys N modules in one pipeline run, resource IDs namespaced with module name to avoid collisions - stack.schema.json: add optional title field for display name Rename: - pipelines/deploy.yaml → pipelines/contract.yml (declarative spec, not a pipeline) - pipelines/ci.yaml → pipelines/ci.yml - All 44 .yaml files → .yml repo-wide (contracts, module examples, kyverno policies) - .acdl/contract.yaml → .acdl/contract.yml Resolver (core/contract_resolver.py): - Rewrite resolve() to loop infrastructure map, default version to latest, merge module fragments into one stack with namespaced resource IDs - _latest_version() picks highest non-deprecated from registry - _namespace_resources() prefixes IDs + rewrites ref: expressions for multi-module - Single-module path: unprefixed IDs (backward compatible) Verification: - 494 tests pass (0 contract-shape failures) - Local E2E passes (contract → resolver → adapter → local ECS HTTP 200 → outbox) ---ci--- project: acdl phase: 57 milestone: v1.10.2 status: execute ---/ci---
118 lines
3.7 KiB
Markdown
118 lines
3.7 KiB
Markdown
# alb — Application Load Balancer (load balancer + target group + listener)
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> **Module kind:** primitive | **Version:** 1.0.0
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An Application Load Balancer with a target group and a listener. This is
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a multi-resource module: it creates a load balancer, a target group, and
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a listener that forwards traffic to the target group. The target group
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is what `ecs-service` registers its tasks with.
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## Resources
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| Resource | Type | Purpose |
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|----------|------|---------|
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| load_balancer | `aws_lb` | Application load balancer in the VPC subnets |
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| target_group | `aws_lb_target_group` | Target group for the ECS service tasks |
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| listener | `aws_lb_listener` | Listener forwarding the LB port to the target group |
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## Inputs
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| Name | Type | Required | Default | Description |
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|------|------|----------|---------|-------------|
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| `name` | string | yes | — | Name tag for the load balancer and child resources |
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| `subnets` | string | yes | — | Comma-separated subnet ids (from `vpc`) |
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| `security_group` | string | yes | — | Security group id for the load balancer |
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| `port` | number | no | 80 | Listener port |
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| `protocol` | string | no | `HTTP` | Listener protocol |
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| `region` | string | yes | — | AWS region the load balancer is created in |
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## Outputs
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| Name | Type | Description |
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|------|------|-------------|
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| `lb_arn` | arn | The load balancer ARN |
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| `listener_arn` | arn | The listener ARN |
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| `target_group_arn` | arn | The target group ARN |
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## Usage
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```json
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{
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"id": "alb",
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"type": "aws:elbv2:loadbalancer",
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"module": "alb@1.0.0",
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"inputs": {
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"name": "acdl-microservice",
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"subnets": "ref:vpc.subnet_ids",
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"security_group": "ref:roles.role_arn",
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"port": 8080,
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"protocol": "HTTP",
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"region": "us-east-1"
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}
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}
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```
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The `target_group_arn` output is referenced by `ecs-service` as its
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`lb_target_group_arn` input to wire the service to the ALB.
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## Compliance extension points
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- **TLS / HTTPS listener** — add `aws_acm_certificate` + `ssl_policy` + `certificate_arn` for encryption in transit (SOC2 CC6.1, PCI-DSS 4.1, GDPR Art.32).
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- **Access logs** — add `access_logs { bucket = ..., prefix = ... }` to the load balancer (SOX, SOC2 CC7.2, DORA ICT audit trail).
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- **Security group rules** — add ingress/egress rules restricting traffic to known sources (SOC2 CC6.6, PCI-DSS 1.2).
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- **Health check** — add a `health_check` block to the target group (SOC2 CC7.3 monitoring, DORA operational resilience).
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- **WAF** — add `aws_wafv2_web_acl_association` for application-layer protection (SOC2 CC7.6, PCI-DSS 6.5, DORA ICT risk).
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- **Deregistration delay** — add `deregistration_delay` for graceful draining (SOC2 CC9.1 resilience).
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## Examples
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Validated example contracts are in [`examples/`](examples/). The platform-test
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pipeline validates them against `schemas/contract.schema.json`.
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### Simple
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A minimal deployment:
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[`examples/simple.yml`](examples/simple.yml)
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```yaml
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environment: dev
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id: alb
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infrastructure:
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alb:
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inputs:
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name: my-alb
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port: 80
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protocol: HTTP
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region: us-east-1
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security_group: sg-xxx
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subnets: subnet-aaa,subnet-bbb
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version: 1.0.0
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name: alb-loadbalancer
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```
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### Complex
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A production deployment with optional inputs:
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[`examples/complex.yml`](examples/complex.yml)
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```yaml
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environment: dev
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id: alb
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infrastructure:
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alb:
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inputs:
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name: my-production-alb
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port: 443
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protocol: HTTPS
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region: us-east-1
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security_group: sg-xxx
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subnets: subnet-aaa,subnet-bbb
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version: 1.0.0
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name: alb-loadbalancer
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```
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## Versioning
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`1.0.0` — interface MAJOR, behavior MINOR, lifecycle PATCH. MAJOR bumps
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require a new registry entry (immutable publication); old entries enter
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a 12-month deprecation window. |