Class: Textus::Read::Get

Inherits:
Object
  • Object
show all
Extended by:
Contract::DSL
Defined in:
lib/textus/read/get.rb

Overview

The one read path. ‘fetch:` controls behavior:

fetch: false (default) — pure read: the on-disk envelope annotated with
  a lifecycle freshness verdict. NEVER builds the orchestrator and NEVER
  mutates. Safe for direct callers (accept/reject/publish, materializer,
  uid, validators, hooks).
fetch: true — read-through: after a stale verdict on a `refresh` policy,
  hands off to the fetch orchestrator. A read NEVER performs a
  destructive action (drop/archive) — those belong to the `tend` sweep
  (ADR 0079).

Lifecycle policy comes from the unified ‘lifecycle:` rule slot (ADR 0079).

Instance Method Summary collapse

Methods included from Contract::DSL

arg, around, cli, cli_stdin, contract, contract?, summary, surfaces, verb, view

Constructor Details

#initialize(container:, call:, orchestrator: nil, file_stat: Textus::Ports::Storage::FileStat.new) ⇒ Get

Returns a new instance of Get.



32
33
34
35
36
37
38
39
 
# File 'lib/textus/read/get.rb', line 32

def initialize(container:, call:, orchestrator: nil, file_stat: Textus::Ports::Storage::FileStat.new)
  @container  = container
  @call       = call
  @manifest   = container.manifest
  @file_store = container.file_store
  @file_stat  = file_stat
  @orchestrator = orchestrator # nil → built lazily on first fetch only
end

Instance Method Details

#call(key, fetch: false) ⇒ Object 



41
42
43
44
45
46
47
48
49
50
51
52
 
# File 'lib/textus/read/get.rb', line 41

def call(key, fetch: false)
  envelope = annotated_envelope(key)
  return envelope if envelope.nil?
  return envelope unless fetch && envelope.freshness&.stale

  policy = lifecycle_for(key)
  return envelope unless policy&.on_expire == :refresh # only refresh acts on a read

  verdict = Textus::Domain::Freshness::Verdict.stale(envelope.freshness.reason)
  outcome = orchestrator.execute(refresh_policy(policy).decide(verdict), key: key)
  resolve(outcome, envelope)
end

#get(key, fetch: false) ⇒ Object

Strict variant: raises UnknownKey when the entry is missing. Used by consumers (e.g. uid, Validator) that distinguish absence.



56
57
58
59
 
# File 'lib/textus/read/get.rb', line 56

def get(key, fetch: false)
  call(key, fetch: fetch) ||
    raise(UnknownKey.new(key, suggestions: @manifest.resolver.suggestions_for(key)))
end