Library: lib-nats-client

NodeJS base class providing a NATS.io interface

The intention is to derive a class from this library, which provides specific message handling logic as part of a NATS.io microservices mesh. This is the documentation for the support of NATS v2, which is a significant departure from the original v1. This lists the changes from v1

Logging Logging is now a dependency of this library, which must be injected by the deriving module. This keeps this client clean and single-purpose

Configuration The following configuration item replacements have been made:

• NATS_SERVER & NATS_CLUSTER have been replaced by NATS_SERVERS (plural)
• NATS_SERVERS is a comma-separated list of :,:,
• NATS_PORT has been removed
• NATS_PASSWORD have been replaced by NATS_SEED
• NATS_SEED is an NKey Seed for the service/user account
• NATS_USER has been removed. If NATS_JWT is not specified, then NATS_SEED is used to get the User NKey.
• NATS_JWT is for "hardcoded" clients (only used for STS services currently).
• STS_ENDPOINT is a NEW variable that provides the URI for the Security Token Service, used to exchange NKeys for JWTs
• NATS_NAMESPACE is a NEW variable, required by the STS to segment identities