Files
mesh-catalog/checks/noplacement/main.go
T
jschoubben 0bfc72d230 Make the controller checks strict: nothing names the placed-nowhere controller
controllerdeps refuses any manifest naming the controller's seat, states or
buckets, the lease and the entries once kept to its write among them, and
any module file naming one of its buckets (ADR 0590 §5). The words check
refuses a controller address in any text a module shows. The handacts check
and noplacement's list of assignments readers are folded into it (issue 1126 B10).

Claude-Session: https://claude.ai/code/session_01NcbgfJ9Gum47zkFKWRaovL
2026-11-02 12:29:56 +01:00

104 lines
3.2 KiB
Go

// Command noplacement refuses what the repository path of placement left behind (novox/hq ADR 0567 §10, §12).
//
// Placement, which module runs on which node, is bus state held by the seat mesh-placement; no file of the
// catalogue says it, and no manifest reads it from the delivery indexer, which no longer keeps it. It refuses:
//
// 1. a `placement` directory (or file) at the root of the catalogue;
//
// 2. a `particulars` file at the root (the mesh's node names come from the checker's run, §16);
//
// 3. a manifest naming a state, stream, event or bucket of the indexer's placement (`mesh-delivery-indexer.placement…`
// or `mesh-delivery-indexer_placement…`) in any string value, such as `reads`;
//
// The controller's assignments, which item 4 once listed readers of, are refused with every other name of the
// controller by checks/controllerdeps (novox/hq ADR 0590 §5).
//
// go run . <catalogue root>
//
// Exits 1 on a finding.
package main
import (
"encoding/json"
"fmt"
"os"
"path/filepath"
"sort"
"strings"
)
// Prefixes are the names of the indexer's placement parts; a manifest string starting with one names them.
var Prefixes = []string{"mesh-delivery-indexer.placement", "mesh-delivery-indexer_placement"}
// Findings is every refusal in the catalogue at root, sorted.
func Findings(root string) ([]string, error) {
var out []string
if _, err := os.Lstat(filepath.Join(root, "placement")); err == nil {
out = append(out, "placement: the repository holds no placement; it is bus state of the seat mesh-placement (novox/hq ADR 0567 §10)")
}
if _, err := os.Lstat(filepath.Join(root, "particulars")); err == nil {
out = append(out, "particulars: the repository lists no node names; the checker hands them to the check (novox/hq ADR 0567 §16)")
}
manifests, err := filepath.Glob(filepath.Join(root, "modules", "*", "module.json"))
if err != nil {
return nil, err
}
sort.Strings(manifests)
for _, file := range manifests {
raw, err := os.ReadFile(file)
if err != nil {
return nil, err
}
var doc any
if err := json.Unmarshal(raw, &doc); err != nil {
return nil, fmt.Errorf("%s: %w", file, err)
}
module := filepath.Base(filepath.Dir(file))
for _, s := range named(doc, nil) {
out = append(out, fmt.Sprintf("%s: names %q, which the indexer no longer keeps; placement is the seat mesh-placement's (novox/hq ADR 0567 §12)", module, s))
}
}
sort.Strings(out)
return out, nil
}
// named collects the strings of a decoded manifest that start with one of the Prefixes.
func named(v any, into []string) []string {
switch v := v.(type) {
case string:
for _, p := range Prefixes {
if strings.HasPrefix(v, p) {
return append(into, v)
}
}
case []any:
for _, e := range v {
into = named(e, into)
}
case map[string]any:
for _, e := range v {
into = named(e, into)
}
}
return into
}
func main() {
if len(os.Args) != 2 {
fmt.Fprintln(os.Stderr, "usage: noplacement <catalogue root>")
os.Exit(2)
}
found, err := Findings(os.Args[1])
if err != nil {
fmt.Println(err)
os.Exit(1)
}
for _, f := range found {
fmt.Println(f)
}
if len(found) > 0 {
os.Exit(1)
}
fmt.Println("no placement directory, and no manifest reads the indexer's placement")
}