Terraform Variables

All variables are defined in terraform/variables.tf. Pass overrides with -var="name=value" from the demo repo demo repo
event-driven-serverless-platform-demo — source repository for Terraform, Lambda services, portal, and scripts. Commands run from its root with `terraform -chdir=terraform` unless stated otherwise. root.

Layer enable flags

Variable	Default	Description
enable_ingest	true	Deploy ingest layer ( S3 S3 Amazon Simple Storage Service — data lake bucket for raw ingest and processed TEC output; S3 events trigger processing. , ingest-sync Lambda)
enable_processing	true	Deploy processing layer (requires enable_ingest)
enable_presentation	true	Deploy presentation layer (requires enable_processing)

Region and ingest

Variable	Default	Description
region	ap-southeast-2	AWS AWS Amazon Web Services — cloud platform for ingest, processing, storage, API, and portal hosting in this walkthrough. region for all resources
source_bucket	geonet-open-data	GeoNet GeoNet GeoNet open data — public S3 bucket `geonet-open-data` with GNSS RINEX hourly files under `gnss/rinexhourly/`. Not owned by this stack; no push notification when new files arrive. public source bucket
source_prefix	gnss/rinexhourly/	Source prefix in public bucket
lookback_hours	1	Ingest lookback Ingest lookback Ingest configuration — UTC rolling window (default 1 hour) defining how far back ingest-sync scans for new RINEX files. window (UTC hours, 1–168)
schedule_expression	rate(1 hour)	EventBridge Scheduler EventBridge Scheduler AWS EventBridge Scheduler — triggers ingest-sync Lambda on a recurring UTC schedule (default: hourly). cadence

Processing

Variable	Default	Description
processor_source_prefix	raw/rinexhourly/	Raw RINEX RINEX Receiver Independent Exchange Format — standard GNSS observation file format synced from GeoNet and calibrated by the processor. prefix in data lake
destination_prefix	processed/tec/	Processor output prefix
processor_image_uri	""	Override ECR ECR Amazon Elastic Container Registry — stores the mirrored processor Lambda container image at deploy time. URI (empty = use repo + tag)
processor_image_tag	latest	Tag mirrored from GHCR
processor_maximum_concurrency	15	Max concurrent ingest queue invocations
reprocess_maximum_concurrency	2	Max concurrent reprocess queue invocations
processor_memory_mb	2048	Processor Lambda Processor Lambda Processor Lambda container — runs PyTECGg calibration per SQS message; adopted when a Batch on Fargate parallel-execution quota increase was rejected. Image from `ghcr.io/platformfuzz/tec-processor-image` mirrored to ECR. memory (128–2048 MiB)
processor_timeout_seconds	900	Processor Lambda timeout

Observability thresholds

Variable	Default	Description
dlq_visible_threshold	1	DLQ DLQ Dead-letter queue — SQS queue receiving messages that exceeded maxReceiveCount (5). CloudWatch alarms fire when visible count ≥ 1. visible-message alarm threshold
queue_stale_age_seconds_threshold	1800	Stale message age alarm threshold
process_queue_visible_threshold	100	Process queue depth alarm threshold

Presentation and portal

Variable	Default	Description
deploy_amplify_on_apply	true	Build and zip-deploy portal portal AWS Amplify — hosts the Vite portal SPA. This walkthrough deploys via manual zip upload (no Git connection required). on apply
web_source_dir	../web	Path to portal source directory
amplify_domain	*	Amplify hostname for CORS (auto-derive when *)

Tags

Variable	Default	Description
tags	Project/ManagedBy map	Tags applied to all resources

Example overrides

# Different region
terraform -chdir=terraform apply -var="region=us-east-1"

# Skip Amplify on apply
terraform -chdir=terraform apply -var='deploy_amplify_on_apply=false'

# Different processor image tag
terraform -chdir=terraform apply -var="processor_image_tag=v1.2.3"

# Lock CORS to Amplify hostname
terraform -chdir=terraform apply \
  -var="amplify_domain=$(terraform -chdir=terraform output -raw cors_domain)"

See Terraform Outputs for values emitted after apply.