Compose every machine both ways and show the two agree (issue 1384, ADR 0453 clause 3)
TestEveryMachineComposesAlikeBothWays reads the facts snapshot MESH_FACTS names (the live one in every check and try), else testdata/facts-equal.json, else the snapshot of a mesh of its own; raises it into throwaway stores as the merge gate does; and compares, machine by machine: (a) Foreseeing on the fresh store (error or none, the validator's problems, LeftOut and its reasons, Withheld, Unbound, Unplaced, HandedOnly, the own secrets named foreseen, and the ports mesh-sdk names foreseen against the ones the controller's send allocates); (b) the send, on two stores, the controller's Allocating composition and the adapter's compose, perform and compose again (ports, pair credentials and own secrets made, by key); (c) after the send, Reading both ways on one store, byte for byte. A difference names the machine, the comparison and the first resource and field. The comparison itself is tested without a store, and failed first when the body was not read. The test is deleted with the controller's composition (issue 1389).
This commit is contained in:
@@ -0,0 +1,245 @@
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//go:build integration
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package main
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import (
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"context"
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"fmt"
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"os"
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"sort"
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"strings"
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"testing"
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"git.novox.be/novox/mesh-sdk/go/compose"
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snapshot "github.com/novox/mesh-controller/internal/facts"
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)
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// 1384: nothing shows the controller's composition and mesh-sdk's compose every node alike on the live facts. This test is
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// that proof (novox/hq ADR 0453 clause 3): it reads the facts snapshot MESH_FACTS names (the live one in every check and
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// every try, the build seat gives it), else one captured in testdata/facts-equal.json (taken with `facts show` and
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// scrubbed as the snapshot is), else the snapshot of a small mesh of its own; raises it into throwaway stores as the merge
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// gate does; and composes every machine both ways.
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//
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// (a) Foreseeing on the fresh store: the same error or none, the same validator problems, LeftOut and its reasons, Withheld,
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// Unbound, Unplaced, HandedOnly and the own secrets named foreseen; and the ports mesh-sdk names foreseen are the ones the
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// controller allocates when it sends.
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// (b) the send: on two stores raised from the same snapshot, the controller's Allocating composition of every machine, and the
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// adapter's compose, perform and compose again; the same ports, pair credentials and own secrets were made, by key.
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// (c) after (b), Reading on one store, both ways: the declaration byte for byte.
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//
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// It sends nothing and opens no store but the throwaway ones. A difference names the machine, the comparison and the first
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// field that differs; a machine both paths refuse alike is said, not failed. The test is deleted with the controller's
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// composition (issue 1389).
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func TestEveryMachineComposesAlikeBothWays(t *testing.T) {
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ctx := t.Context()
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admin := os.Getenv("MESH_TEST_POSTGRES")
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if admin == "" {
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t.Skip("no throwaway PostgreSQL (MESH_TEST_POSTGRES) to raise the mesh in")
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}
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f, source := equalityFacts(t)
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t.Logf("the facts of %s (%s): %d machine(s)", f.Taken.Format("2006-01-02 15:04:05"), source, len(f.Machines))
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shelf, err := shelfOfFacts(f)
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if err != nil {
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t.Fatal(err)
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}
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sources := sourcesOfFacts(f)
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var failures []string
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// (a) on the fresh store. mesh-sdk's composition first: it writes nothing, where the controller's makes every pair
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// credential on the way.
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fresh, dropFresh, err := throwawayStores(ctx, admin)
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if err != nil {
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t.Fatal(err)
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}
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if _, err := raiseFromFacts(ctx, fresh, f, shelf, sources); err != nil {
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dropFresh()
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t.Fatal(err)
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}
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sdkForeseen := map[string]composedBoth{}
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foreseenPorts := map[string][]string{}
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for _, m := range f.Machines {
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in, err := readComposeInput(ctx, fresh)
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if err != nil {
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dropFresh()
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t.Fatalf("%s: the adapter cannot read the mesh: %v", m.Name, err)
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}
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d, problems, cerr := compose.ComposeIn(in.Input, m.Name, compose.Foreseeing)
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if cerr == nil {
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foreseenPorts[m.Name] = append([]string(nil), d.ForeseenPorts...)
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sort.Strings(foreseenPorts[m.Name])
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}
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sdkForeseen[m.Name] = capturedFrom(sendableOf(d), problems, cerr)
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}
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oldForeseen := map[string]composedBoth{}
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gens, gensErr := generators(ctx, fresh)
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for _, m := range f.Machines {
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if gensErr != nil {
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oldForeseen[m.Name] = composedBoth{Err: gensErr.Error()}
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continue
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}
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d, problems, err := composedAndValidated(ctx, fresh, m.Name, gens, Foreseeing)
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oldForeseen[m.Name] = capturedFrom(d, problems, err)
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}
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dropFresh()
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for _, m := range f.Machines {
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failures = append(failures, bothWaysDiffer(m.Name, "(a) Foreseeing", oldForeseen[m.Name], sdkForeseen[m.Name], false)...)
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}
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// (b) and (c): the controller's send of every machine, then both ways of reading, on one store.
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oldStore, dropOld, err := throwawayStores(ctx, admin)
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if err != nil {
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t.Fatal(err)
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}
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if _, err := raiseFromFacts(ctx, oldStore, f, shelf, sources); err != nil {
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dropOld()
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t.Fatal(err)
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}
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oldGens, oldGensErr := generators(ctx, oldStore)
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for _, m := range f.Machines {
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if oldGensErr != nil {
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break
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}
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_, _, _ = composedAndValidated(ctx, oldStore, m.Name, oldGens, Allocating)
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}
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oldMade, err := madeIn(ctx, oldStore)
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if err != nil {
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dropOld()
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t.Fatal(err)
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}
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readOld, readSDK := map[string]composedBoth{}, map[string]composedBoth{}
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for _, m := range f.Machines {
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if oldGensErr != nil {
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readOld[m.Name] = composedBoth{Err: oldGensErr.Error()}
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} else {
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d, problems, err := composedAndValidated(ctx, oldStore, m.Name, oldGens, Reading)
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readOld[m.Name] = capturedFrom(d, problems, err)
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}
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d, problems, err := composeQuestion(ctx, oldStore, m.Name, compose.Reading, true)
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readSDK[m.Name] = capturedFrom(d, problems, err)
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}
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dropOld()
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for _, m := range f.Machines {
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failures = append(failures, bothWaysDiffer(m.Name, "(c) Reading after the send", readOld[m.Name], readSDK[m.Name], true)...)
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}
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sdkStore, dropSDK, err := throwawayStores(ctx, admin)
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if err != nil {
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t.Fatal(err)
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}
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if _, err := raiseFromFacts(ctx, sdkStore, f, shelf, sources); err != nil {
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dropSDK()
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t.Fatal(err)
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}
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sendRefused := map[string]string{}
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for _, m := range f.Machines {
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if _, err := composeSend(ctx, sdkStore, m.Name); err != nil {
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sendRefused[m.Name] = err.Error()
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}
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}
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sdkMade, err := madeIn(ctx, sdkStore)
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dropSDK()
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if err != nil {
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t.Fatal(err)
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}
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failures = append(failures, madeDiffer("(b) the send", oldMade, sdkMade)...)
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// (a)'s ports: those mesh-sdk names foreseen, for each machine, are the ones the controller's send allocated to it.
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for _, m := range f.Machines {
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var allocated []string
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for _, p := range oldMade.Ports {
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if node, rest, ok := strings.Cut(p, " "); ok && node == m.Name {
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module, port, _ := strings.Cut(strings.SplitN(rest, "->", 2)[0], ":")
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allocated = append(allocated, module+":"+port)
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}
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}
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sort.Strings(allocated)
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// A port the snapshot already holds is not allocated by a send, and one a module is given is not allocated either: the
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// ones mesh-sdk names must all be among those the send allocated.
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for _, want := range foreseenPorts[m.Name] {
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found := false
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for _, got := range allocated {
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found = found || got == want
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}
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if !found {
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failures = append(failures, fmt.Sprintf("%s, (a) Foreseeing: mesh-sdk names the port %s foreseen and the "+
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"controller's send allocates none for it (it allocates %v)", m.Name, want, allocated))
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}
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}
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}
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for machine, why := range sendRefused {
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t.Logf("%s: mesh-sdk's send of it is refused: %s", machine, why)
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}
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for machine, c := range oldForeseen {
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if c.Err != "" {
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t.Logf("%s: the controller refuses it, and mesh-sdk alike: %s", machine, oneLine(c.Err))
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}
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}
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if len(failures) > 0 {
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t.Fatalf("the two compositions differ on %d point(s):\n %s", len(failures), strings.Join(failures, "\n "))
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}
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t.Logf("%d machine(s) compose alike both ways", len(f.Machines))
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}
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// equalityFacts is the snapshot the comparison composes: MESH_FACTS, else the one captured in testdata, else the facts of a
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// mesh of its own (the same shape, small). Source says which.
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func equalityFacts(t *testing.T) (snapshot.Facts, string) {
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t.Helper()
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ctx := t.Context()
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if path := os.Getenv("MESH_FACTS"); path != "" {
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f, err := readFacts(ctx, path)
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if err != nil {
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t.Fatalf("MESH_FACTS names %s and it is not a snapshot: %v", path, err)
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}
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return f, "MESH_FACTS " + path
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}
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if _, err := os.Stat("testdata/facts-equal.json"); err == nil {
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f, err := readFacts(ctx, "testdata/facts-equal.json")
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if err != nil {
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t.Fatal(err)
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}
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return f, "captured in testdata/facts-equal.json"
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}
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open, _ := aMeshWithSecrets(t)
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f, err := gatherFacts(ctx, open, "2.11.17")
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if err != nil {
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t.Fatal(err)
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}
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return f, "gathered from a mesh of the test's own"
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}
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// madeIn is what a store holds that a send makes, by key and never by value.
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func madeIn(ctx context.Context, open *stores) (made, error) {
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var out made
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inv := open.inventory
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nodes, err := inv.Nodes(ctx)
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if err != nil {
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return out, err
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}
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for _, n := range nodes {
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ports, err := inv.PortsFor(ctx, n.Name)
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if err != nil {
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return out, err
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}
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for _, p := range ports {
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out.Ports = append(out.Ports, fmt.Sprintf("%s %s:%d->%d", n.Name, p.Module, p.Wanted, p.Machine))
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}
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rows, err := inv.SecretsFrom(ctx, n.Name)
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if err != nil {
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return out, err
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}
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for _, s := range rows {
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out.Pairs = append(out.Pairs, fmt.Sprintf("%s %s on %s from %s local=%s", s.Name, s.ConsumerModule, s.Consumer, n.Name, s.Local))
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}
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}
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own, err := inv.OwnSecretRows(ctx)
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if err != nil {
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return out, err
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}
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for _, r := range own {
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out.OwnSecrets = append(out.OwnSecrets, fmt.Sprintf("%s %s/%s (%s)", r.Node, r.Module, r.Name, r.Origin))
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}
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sort.Strings(out.Ports)
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sort.Strings(out.Pairs)
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sort.Strings(out.OwnSecrets)
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return out, nil
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}
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@@ -0,0 +1,246 @@
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package main
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"reflect"
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"sort"
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"strings"
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"testing"
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)
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// The comparison of the controller's composition and mesh-sdk's (novox/hq ADR 0453 clause 3, design 47 R4b, issue 1384),
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// the part of it that needs no store. The test that raises a mesh and composes every machine both ways is
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// compose_equal_integration_test.go; both are deleted with the controller's own composition (issue 1389).
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// composedBoth is what one composition of a machine said, in the terms the two paths are compared in.
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type composedBoth struct {
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Err string
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Problems []string
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LeftOut map[string]string
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Withheld []string
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Unbound []string
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Unplaced []string
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Handed []string
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// Foreseen are the own secrets the composition names foreseen, as `module/name`.
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Foreseen []string
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Body []byte
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}
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// capturedFrom is a sendable, its validator problems and the error that came with it, as compared.
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func capturedFrom(d sendable, problems []string, err error) composedBoth {
|
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if err != nil {
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return composedBoth{Err: err.Error()}
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}
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c := composedBoth{Problems: append([]string(nil), problems...), LeftOut: d.leftOutWhy,
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Unplaced: append([]string(nil), d.unplaced...), Handed: append([]string(nil), d.handedOnly...),
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Foreseen: append([]string(nil), d.foreseen...)}
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||||
for _, o := range d.withheld {
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c.Withheld = append(c.Withheld, o.String())
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||||
}
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||||
for _, u := range d.unbound {
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||||
c.Unbound = append(c.Unbound, u.String())
|
||||
}
|
||||
sort.Strings(c.Problems)
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||||
sort.Strings(c.Withheld)
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||||
sort.Strings(c.Unbound)
|
||||
sort.Strings(c.Unplaced)
|
||||
sort.Strings(c.Handed)
|
||||
sort.Strings(c.Foreseen)
|
||||
c.Body, _ = d.Body()
|
||||
return c
|
||||
}
|
||||
|
||||
// bothWaysDiffer says how two compositions of one machine differ, one line for each field that does, naming the machine and
|
||||
// the comparison. A machine both refuse alike is no difference. withBody compares the declaration byte for byte and names
|
||||
// the first resource that differs.
|
||||
func bothWaysDiffer(machine, comparison string, old, sdk composedBoth, withBody bool) []string {
|
||||
var out []string
|
||||
say := func(field string, a, b any) {
|
||||
out = append(out, fmt.Sprintf("%s, %s: %s differs: the controller's %v, mesh-sdk's %v", machine, comparison, field, a, b))
|
||||
}
|
||||
if old.Err != sdk.Err {
|
||||
say("the refusal", quoted(old.Err), quoted(sdk.Err))
|
||||
return out
|
||||
}
|
||||
if old.Err != "" {
|
||||
return nil
|
||||
}
|
||||
for _, f := range []struct {
|
||||
name string
|
||||
old, sdk []string
|
||||
}{
|
||||
{"the validator's problems", old.Problems, sdk.Problems},
|
||||
{"Withheld", old.Withheld, sdk.Withheld},
|
||||
{"Unbound", old.Unbound, sdk.Unbound},
|
||||
{"Unplaced", old.Unplaced, sdk.Unplaced},
|
||||
{"HandedOnly", old.Handed, sdk.Handed},
|
||||
{"the own secrets named foreseen", old.Foreseen, sdk.Foreseen},
|
||||
} {
|
||||
if !sameStrings(f.old, f.sdk) {
|
||||
say(f.name, f.old, f.sdk)
|
||||
}
|
||||
}
|
||||
if !sameLeftOut(old.LeftOut, sdk.LeftOut) {
|
||||
say("LeftOut and its reasons", old.LeftOut, sdk.LeftOut)
|
||||
}
|
||||
if withBody && !bytes.Equal(old.Body, sdk.Body) {
|
||||
out = append(out, fmt.Sprintf("%s, %s: the declaration differs byte for byte; %s", machine, comparison,
|
||||
firstDifferingResource(old.Body, sdk.Body)))
|
||||
}
|
||||
return out
|
||||
}
|
||||
|
||||
func quoted(s string) string {
|
||||
if s == "" {
|
||||
return "none"
|
||||
}
|
||||
return fmt.Sprintf("%q", s)
|
||||
}
|
||||
|
||||
func sameStrings(a, b []string) bool {
|
||||
if len(a) == 0 && len(b) == 0 {
|
||||
return true
|
||||
}
|
||||
return reflect.DeepEqual(a, b)
|
||||
}
|
||||
|
||||
func sameLeftOut(a, b map[string]string) bool {
|
||||
if len(a) == 0 && len(b) == 0 {
|
||||
return true
|
||||
}
|
||||
return reflect.DeepEqual(a, b)
|
||||
}
|
||||
|
||||
// firstDifferingResource names the first resource of two declaration bodies that is not the same, and the first field of it.
|
||||
func firstDifferingResource(a, b []byte) string {
|
||||
var x, y struct {
|
||||
Resources []map[string]any `json:"resources"`
|
||||
}
|
||||
if json.Unmarshal(a, &x) != nil || json.Unmarshal(b, &y) != nil {
|
||||
return "a body is not a declaration"
|
||||
}
|
||||
byID := func(rs []map[string]any) map[string]map[string]any {
|
||||
out := map[string]map[string]any{}
|
||||
for _, r := range rs {
|
||||
out[fmt.Sprint(r["id"])] = r
|
||||
}
|
||||
return out
|
||||
}
|
||||
ids := map[string]bool{}
|
||||
left, right := byID(x.Resources), byID(y.Resources)
|
||||
for id := range left {
|
||||
ids[id] = true
|
||||
}
|
||||
for id := range right {
|
||||
ids[id] = true
|
||||
}
|
||||
var order []string
|
||||
for id := range ids {
|
||||
order = append(order, id)
|
||||
}
|
||||
sort.Strings(order)
|
||||
for _, id := range order {
|
||||
l, inLeft := left[id]
|
||||
r, inRight := right[id]
|
||||
switch {
|
||||
case !inRight:
|
||||
return fmt.Sprintf("resource %s is only in the controller's", id)
|
||||
case !inLeft:
|
||||
return fmt.Sprintf("resource %s is only in mesh-sdk's", id)
|
||||
}
|
||||
var fields []string
|
||||
for k := range l {
|
||||
fields = append(fields, k)
|
||||
}
|
||||
for k := range r {
|
||||
if _, have := l[k]; !have {
|
||||
fields = append(fields, k)
|
||||
}
|
||||
}
|
||||
sort.Strings(fields)
|
||||
for _, k := range fields {
|
||||
if !reflect.DeepEqual(l[k], r[k]) {
|
||||
return fmt.Sprintf("resource %s, field %s: the controller's %v, mesh-sdk's %v", id, k, l[k], r[k])
|
||||
}
|
||||
}
|
||||
}
|
||||
if !reflect.DeepEqual(left, right) {
|
||||
return "the envelopes differ"
|
||||
}
|
||||
return "the resources are the same; the envelope differs"
|
||||
}
|
||||
|
||||
// made is what a send made in a store, by key and never by value: the machine ports given, the pair credentials and the
|
||||
// own secrets.
|
||||
type made struct {
|
||||
Ports []string
|
||||
Pairs []string
|
||||
OwnSecrets []string
|
||||
}
|
||||
|
||||
// madeDiffer says how what two sends made differs.
|
||||
func madeDiffer(comparison string, old, sdk made) []string {
|
||||
var out []string
|
||||
for _, f := range []struct {
|
||||
name string
|
||||
old, sdk []string
|
||||
}{
|
||||
{"the ports allocated", old.Ports, sdk.Ports},
|
||||
{"the pair credentials made", old.Pairs, sdk.Pairs},
|
||||
{"the own secrets made", old.OwnSecrets, sdk.OwnSecrets},
|
||||
} {
|
||||
if !sameStrings(f.old, f.sdk) {
|
||||
out = append(out, fmt.Sprintf("%s: %s differ: the controller's %s, mesh-sdk's %s", comparison, f.name,
|
||||
strings.Join(f.old, ", "), strings.Join(f.sdk, ", ")))
|
||||
}
|
||||
}
|
||||
return out
|
||||
}
|
||||
|
||||
// 1384/AC3: the comparison itself. A composition that differs by one setting's worth is named, with its machine and the
|
||||
// resource and field that first differ; two that agree, and two that refuse alike, are not differences. It failed first,
|
||||
// before bothWaysDiffer read the body: a changed setting went unseen.
|
||||
func TestTheComparisonNamesTheMachineWhoseCompositionDiffers(t *testing.T) {
|
||||
body := func(port string) []byte {
|
||||
raw, err := json.Marshal(map[string]any{"declaration": 1, "resources": []map[string]any{
|
||||
{"id": "files.config", "type": "file", "content": "port=" + port},
|
||||
{"id": "files.dir", "type": "directory"}}})
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
return raw
|
||||
}
|
||||
same := composedBoth{Body: body("8080"), Foreseen: []string{"files/admin"}}
|
||||
if got := bothWaysDiffer("laptop", "Reading", same, same, true); len(got) != 0 {
|
||||
t.Fatalf("a composition differs from itself: %v", got)
|
||||
}
|
||||
changed := composedBoth{Body: body("8081"), Foreseen: []string{"files/admin"}}
|
||||
got := bothWaysDiffer("laptop", "Reading", same, changed, true)
|
||||
if len(got) != 1 || !strings.Contains(got[0], "laptop, Reading") ||
|
||||
!strings.Contains(got[0], "resource files.config, field content") ||
|
||||
!strings.Contains(got[0], "port=8080") || !strings.Contains(got[0], "port=8081") {
|
||||
t.Fatalf("the changed setting is not named with its machine, resource and field: %v", got)
|
||||
}
|
||||
// A field of the lists.
|
||||
other := composedBoth{Body: body("8080"), Foreseen: []string{"files/admin", "files/token"}}
|
||||
if got := bothWaysDiffer("anchor", "Foreseeing", same, other, false); len(got) != 1 ||
|
||||
!strings.Contains(got[0], "anchor, Foreseeing: the own secrets named foreseen differs") {
|
||||
t.Fatalf("a secret named foreseen on one path alone is not named: %v", got)
|
||||
}
|
||||
// Refused alike is said, not failed; refused differently is a difference.
|
||||
a, b := composedBoth{Err: "files on laptop needs a credential"}, composedBoth{Err: "files on laptop needs a credential"}
|
||||
if got := bothWaysDiffer("laptop", "Foreseeing", a, b, true); len(got) != 0 {
|
||||
t.Fatalf("two compositions that refuse a machine alike differ: %v", got)
|
||||
}
|
||||
if got := bothWaysDiffer("laptop", "Foreseeing", a, composedBoth{Body: body("1")}, true); len(got) != 1 ||
|
||||
!strings.Contains(got[0], "the refusal differs") {
|
||||
t.Fatalf("a machine one path refuses and the other composes is not named: %v", got)
|
||||
}
|
||||
// And what a send made.
|
||||
if got := madeDiffer("the send", made{Ports: []string{"anchor files:80->8080"}}, made{}); len(got) != 1 ||
|
||||
!strings.Contains(got[0], "the ports allocated differ") {
|
||||
t.Fatalf("a port allocated on one path alone is not named: %v", got)
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user