tegwick
55363905bc
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Completes FLUID-WP-0007. The seven minimal-conformance requirements and the mechanically checkable architectural invariants are asserted as tests rather than claimed in a README, because a conformance claim nobody re-checks is one that quietly stops being true. Only the checkable subset of the invariants is asserted; pretending a test can settle the rest would be worse than leaving them to review. TestFirstVerticalSlice runs all eleven steps of Blueprint 50 with no human steps: two revisions, explicit routing, telemetry, a cohort dimension, detected pressure, a hypothesis, a candidate, a 90/10 experiment, fitness comparison, promotion, and a complete audit trail. Requests per completed task fall from 5.65 to 1.00 against a 1.20 target. A companion test runs the loop twice and requires the same verdict, since a loop whose conclusion depended on run order would be measuring the harness rather than the interface. The failure-containment matrix covers Blueprint 34 directly: the data plane keeps serving with the evidence store closed, with telemetry wedged against a sink that never returns, after a failed build, after an experiment rollback, and with the adaptive concurrency limit saturated. Fixes a real bug the suite exposed. Drain closed the emitter outright, so every request after the first flush emitted into a dead emitter and was silently lost -- the kind of fault that makes a later measurement quietly wrong rather than loudly broken. Emitter.Flush now waits for delivery without stopping it. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014KmVxhJ35tCo7rE7UnLwWu Assistant: claude-code Assistant-Model: opus Assistant-Process: 1116572@bnt-lap001 Assistant-Session: 8ba9bb93-a72a-4883-b189-2499cce5c400
67 lines
2.1 KiB
Go
67 lines
2.1 KiB
Go
// Package echo provides the conformance fixture adapters.
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//
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// Two revisions over the same data: R-1 exposes only a collection, R-2 adds the
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// convenience resource. Both are ordinary deterministic HTTP handlers, which is
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// the point — an adapter is a normal service, and fluid-core sits in front of
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// it without asking anything of it.
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package echo
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import (
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"encoding/json"
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"net/http"
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"sort"
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"time"
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)
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// Entry is one record the fixture serves.
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type Entry struct {
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ID string `json:"id"`
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Title string `json:"title"`
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CreatedAt time.Time `json:"created_at"`
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}
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// Data returns a deterministic set of entries.
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//
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// Fixed timestamps rather than time.Now: a conformance suite whose fixture
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// changes between runs cannot distinguish a regression from the clock.
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func Data() []Entry {
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base := time.Date(2026, 9, 1, 12, 0, 0, 0, time.UTC)
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return []Entry{
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{ID: "e-1", Title: "the river reached the forge", CreatedAt: base},
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{ID: "e-2", Title: "nine doors stayed honest", CreatedAt: base.Add(24 * time.Hour)},
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{ID: "e-3", Title: "the reviewing side", CreatedAt: base.Add(48 * time.Hour)},
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}
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}
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// NewR1 returns the collection-only adapter.
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//
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// A consumer wanting the newest entry must fetch the whole collection, sort it
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// and discard the rest. That is the interface pressure the fixture generates.
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func NewR1() http.Handler {
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mux := http.NewServeMux()
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mux.HandleFunc("/v1/entries", func(w http.ResponseWriter, r *http.Request) {
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writeJSON(w, Data())
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})
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return mux
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}
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// NewR2 returns the adapter with the convenience resource added.
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func NewR2() http.Handler {
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mux := http.NewServeMux()
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mux.HandleFunc("/v1/entries", func(w http.ResponseWriter, r *http.Request) {
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writeJSON(w, Data())
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})
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mux.HandleFunc("/v1/entries/latest", func(w http.ResponseWriter, r *http.Request) {
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entries := Data()
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sort.Slice(entries, func(i, j int) bool {
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return entries[i].CreatedAt.After(entries[j].CreatedAt)
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})
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writeJSON(w, entries[0])
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})
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return mux
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}
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func writeJSON(w http.ResponseWriter, v any) {
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w.Header().Set("Content-Type", "application/json")
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_ = json.NewEncoder(w).Encode(v)
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}
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