Bolty.Policy (Bolty v0.3.0)

Resolved driver behaviour for a single connection.

Resolved from the negotiated Bolt version (and optionally the HELLO response metadata) at connection time, then stashed on the connection state and threaded into every pack/unpack/message call. Code pattern-matches on policy fields and never reads a Bolt or server version directly.

Policy is an internal distillation of negotiated facts, not a user-facing configuration surface. Users influence policy by passing connection options (e.g. constraining :versions at negotiation).

Summary

Types

datetime()

DateTime encoding dialect. Bolty only ever negotiates Bolt 5.0+, which always uses the evolved struct tags (0x49/0x69) — :evolved is the only value.

notifications_field()

HELLO wire field name for disabled notification categories/classifications.

t()

Types

datetime()

@type datetime() :: :evolved

DateTime encoding dialect. Bolty only ever negotiates Bolt 5.0+, which always uses the evolved struct tags (0x49/0x69) — :evolved is the only value.

notifications_field()

@type notifications_field() ::
  :notifications_disabled_categories | :notifications_disabled_classifications

HELLO wire field name for disabled notification categories/classifications.

:notifications_disabled_categories — Bolt ≤ 5.5
:notifications_disabled_classifications — Bolt 5.6+ (spec rename)

t()

@type t() :: %Bolty.Policy{
  cypher_25: boolean(),
  cypher_5: boolean(),
  datetime: datetime(),
  dynamic_labels: boolean(),
  gql_errors: boolean(),
  notifications_field: notifications_field(),
  vectors: boolean()
}