Configuration

Configuration values below are passed through environment variables.

CHAIN_NAME [Mandatory]

An alphanumeric string to identify the chain.

Environment Variable	Sample Values
CHAIN_NAME	CHAIN_NAME=Node Template

CHAIN_ENDPOINT [Mandatory]

The Endpoint of the chain node to which the event feed should connect to. Protocols Supported: ws (WebSocket) and wss (WebSocket Secure)

Environment Variable	Sample Values
CHAIN_ENDPOINT	CHAIN_ENDPOINT=ws://localhost:9944 CHAIN_ENDPOINT=wss://localhost:9944

LOGGERS [Mandatory]

The configuration pertains to the loggers enabled for the event feed. This configuration is extensible to add multiple logging such as logging to a file, logging to console, logging to monitoring system based on different levels of logging. Winston is used under the hood.

Loggers Available:

• console

• file

Logger Levels:

• info

• warning

• error

• debug

Format: LOGGERS=type,level[,param]

Multiple loggers can be provided separated by ";"

Environment Variable	Sample Values
LOGGERS	LOGGERS=console,info;file,error,/logs/event-feed.log

EXCLUDES [Optional]

Sections or Methods of a specific section can be excluded provided through this configuration.

• A Section can be excluded as whole

• Specific methods of the section can be excluded

Format: EXCLUDES="section[=methods]"

Multiple sections to be provided separated by ";"

Multiple methods to be separated by ","

Environment Variable	Sample Values
EXCLUDES	EXCLUDES="system;balance=transfer;"

TYPES_FILE [Optional]

Location to custom types for the chain.

Environment Variable	Sample Values
TYPES_FILE	TYPES_FILE="/opt/types.json"

KAFKA_BROKERS [Mandatory]

List of Kafka brokers where the event should be posted. separated by ";"

Environment Variable	Sample Values
KAFKA_BROKERS	KAFKA_BROKERS=localhost:9091;localhost:9092

TOPICS [Mandatory]

Topics are generated using register_event_source.sh

Topic to which events from certain sections to be posted ";"

Multiple sections with topic can be provided separated by ";"

Environment Variable	Sample Values
TOPICS	TOPICS=balances=c76b7a5d-d18a-43e6-a28f-db6bb7520986

OPENWHISK_API_KEY [Mandatory]

Openwhisk authentication key.

Environment Variable	Sample Values
OPENWHISK_API_KEY	OPENWHISK_API_KEY=23bc46b1-71f6-4ed5-8c54-816aa4f8c502:123zO3xZCLrMN6v2BKK1dXYFpXlPkccOFqm12CdAsMgRU4VrNZ9lyGVCGuMDGIwP

OPENWHISK_API_HOST [Mandatory]

Openwhisk API Endpoint

Environment Variable	Sample Values
OPENWHISK_API_HOST	OPENWHISK_API_HOST=https://localhost:31001

OPENWHISK_NAMESPACE [Mandatory]

Organization space where the actions, rules, and triggers related to aurras resides.

Environment Variable	Sample Values
OPENWHISK_NAMESPACE	OPENWHISK_NAMESPACE=guest

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EVENT_RECEIVER [Mandatory]

Trigger Endpoint where the event should be posted

Environment Variable	Sample Values
EVENT_RECEIVER	EVENT_RECEIVER=event-receiver

EVENT_PROCESSOR [Mandatory]

Action which is responsible for parsing the events to generic specification.

Environment Variable	Sample Values
EVENT_PROCESSOR	EVENT_PROCESSOR=substrate-event-processor

HEALTH_API_PORT [Optional]‌

Configuration for Health API port primarily used for Kubernetes readiness and liveness probe. Default port is 80.

Environment Variable	Sample Values
HEALTH_API_PORT	HEALTH_API_PORT=8080