jochen
b3ebdd5edd
Every tool's schema in one $SRV.INFO reply outgrew max_payload on machines serving 137-206 tools, and the refused reply was dropped silently, so search and a machine's view went empty. Module tools now announce without schema; describe and tools/list ask the module for it. An answer still too large has its descriptions cut to a line, and a failed reply is logged.
55 lines
2.4 KiB
Go
55 lines
2.4 KiB
Go
package announce
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import (
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"encoding/json"
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"fmt"
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"strings"
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"testing"
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)
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// What a machine serves fits the bus's largest message (1 MiB) with room to spare at several hundred
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// tools: a module's tool is announced without its schema, which made a machine with ~200 tools outgrow it
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// and vanish from discovery (2026-10-04). A seat's verb keeps its schema.
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func TestAMachinesAnnouncementFitsTheBusAtSeveralHundredTools(t *testing.T) {
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schema := json.RawMessage(`{"type":"object","properties":{` + strings.Repeat(`"field_with_a_long_name":{"type":"string","description":"a description of what this argument means, long enough to matter"},`, 12) + `"last":{"type":"string"}}}`)
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description := strings.Repeat("A tool that does something useful, described at the length the catalogue's tools are. ", 3)
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var endpoints []Endpoint
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for i := 0; i < 400; i++ {
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for _, subject := range []string{fmt.Sprintf("mesh.mod.m%d.tool.t", i), fmt.Sprintf("mesh.mod.m%d.tool.t.laptop", i)} {
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endpoints = append(endpoints, Endpoint{Kind: KindTool, Module: fmt.Sprintf("m%d", i), Tool: "t", Node: "laptop",
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Description: description, Schema: schema, Subject: subject})
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}
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}
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endpoints = append(endpoints, Endpoint{Kind: KindSeat, Module: "m0", Tool: "verb", Seat: "a-seat", Scope: "mesh",
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Description: "a verb", Schema: schema, Subject: "mesh.seat.a-seat.tool.verb"})
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body, err := json.Marshal(Info(Service{Name: "node-tools", ID: "laptop"}, endpoints))
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if err != nil {
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t.Fatal(err)
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}
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if len(body) > 1<<20 {
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t.Fatalf("400 tools announce %d bytes, beyond the bus's 1 MiB", len(body))
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}
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t.Logf("400 tools on two subjects each announce %d bytes", len(body))
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back := Endpoints(Info(Service{Name: "node-tools", ID: "laptop"}, endpoints))
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if len(back[0].Schema) != 0 {
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t.Fatalf("a module's tool still carries its schema: %s", back[0].Schema)
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}
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if seat := back[len(back)-1]; !strings.Contains(string(seat.Schema), "field_with_a_long_name") {
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t.Fatalf("a seat's verb lost its schema: %s", seat.Schema)
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}
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withSchemas := 0
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for range endpoints {
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withSchemas += len(schema) * 2 // escaped inside a string
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}
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t.Logf("with every schema it would have been over %d bytes", len(body)+withSchemas)
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}
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func TestFirstLineShortensADescription(t *testing.T) {
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if got := firstLine("One thing. And more after it."); got != "One thing." {
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t.Fatalf("%q", got)
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}
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if got := firstLine(strings.Repeat("x", 300)); len(got) != 160 {
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t.Fatalf("%d", len(got))
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}
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}
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