Environment Variables

Environment variables are set by Terraform Terraform
HashiCorp Terraform — provisions all platform infrastructure through five modules in `terraform/`. modules at deploy time. Override behavior via Terraform variables or reprocess job parameters where noted.

Ingest_Sync_Lambda

Variable	Source	Description
LOOKBACK_HOURS	lookback_hours (default 1)	UTC rolling window for sync (1–168)
DATA_LAKE_BUCKET	ingest module	Private data lake data lake Private S3 bucket holding raw RINEX under `raw/rinexhourly/` and processed TEC output under `processed/tec/`. bucket name
SOURCE_BUCKET	source_bucket (default 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 bucket
SOURCE_PREFIX	source_prefix (default gnss/rinexhourly/)	Source prefix in public bucket

Processor Lambda (container)

Variable	Default	Description
PROCESSOR_MODE	lambda	Execution mode
SOURCE_BUCKET	data lake bucket	Bucket for raw RINEX RINEX Receiver Independent Exchange Format — standard GNSS observation file format synced from GeoNet and calibrated by the processor. input
SOURCE_PREFIX	raw/rinexhourly/	Raw input prefix
DESTINATION_BUCKET	data lake bucket	Bucket for processed output
DESTINATION_PREFIX	processed/tec/	Processed output prefix
NAV_DAY_OFFSET	1	Default nav file day offset (overridable per reprocess message)
NUMBA_CACHE_DIR	/tmp/numba-cache	Numba JIT cache directory
SAVE_PARQUET	true	Write Parquet Parquet Columnar file format — primary processed output for efficient Query API range scans; JSON is a fallback when `pyarrow` is unavailable. output
SAVE_CSV	true	Write CSV output
SAVE_JSON	true	Write JSON output
SAVE_STATIC_PLOTS	false	Generate PNG plots
SAVE_INTERACTIVE_PLOTS	false	Generate HTML plots
JOBS_TABLE_NAME	DynamoDB table name	Jobs table Jobs table DynamoDB table keyed by `job_id` — stores reprocess job metadata, parameters, status, and output references. for reprocess status updates

Per-job overrides (NAV_DAY_OFFSET, SAVE_*) are passed via reprocess SQS SQS
Amazon Simple Queue Service — buffers ingest and reprocess messages between S3/API and the processor Lambda. messages. See SQS Message Schemas.

Query_API Lambda

Variable	Default	Description
DATA_LAKE_BUCKET	data lake bucket	Bucket for processed output reads
QUERY_MAX_ROWS	2000	Row cap before response serialization
QUERY_READ_WORKERS	8	Parallel S3 read workers per request
CORS_ALLOW_ORIGIN	Amplify hostname	Browser CORS origin (set via amplify_domain)

Reprocess_API Lambda

Variable	Description
REPROCESS_QUEUE_URL	Reprocess_Queue Reprocess_Queue SQS standard queue — buffers reprocessing job messages from the Reprocess API with lower concurrency than ingest. URL
JOBS_TABLE_NAME	DynamoDB Jobs table name
DATA_LAKE_BUCKET	Data lake bucket for raw key lookup
CORS_ALLOW_ORIGIN	Browser CORS origin

Terraform variables mapping

Processor concurrency, timeouts, and alarm thresholds are Terraform variables — not Lambda environment variables:

Terraform variable	Default	Effect
processor_maximum_concurrency	15	Ingest queue ESM concurrency
reprocess_maximum_concurrency	2	Reprocess queue ESM concurrency
processor_timeout_seconds	900	Lambda Lambda AWS Lambda — serverless compute for ingest-sync, query-api, reprocess-api, and the processor container image. timeout
processor_memory_mb	2048	Lambda memory

See Terraform Variables.