NewRuleSet creates a new RuleSet with the given ordered list of Rules.

Accept indicates that the message should be processed.

Forward indicates that the rule could not determine the correct course of action.

Reject indicates that the message should not be processed.

AcceptRule always returns Accept as a result for Apply.

EmptyRejectRule rejects empty messages.

NoopCommitter does nothing on commit and is not isolated.

RuleSet is used to apply a collection of rules.

Committer is returned by postfiltering and should be invoked once the message has been written to the blockchain.

Rule defines a filter function which accepts, rejects, or forwards (to the next rule) an Envelope.

Action is used to express the output of a rule.