Take a module's condition on the operator channel's one subject (issue 1217)

modules/messenger/cmd/messenger/asks.go

@@ -450,6 +450,15 @@ const ConditionOwner = "mesh-controller"
 // grants that module alone. An error is returned only when the ask could not be recorded, so the queue
 // offers it again; a refusal is said to the asker and the work is taken.
 func (h *Holder) TakeAsk(verb, asker string, body json.RawMessage) error {
+	if verb == ConditionVerb {
+		// Before the work lock: Condition takes it, and decides as for the controller's conditions.
+		if !asks.UsableID(strings.ReplaceAll(asker, "-", "_")) {
+			h.Logf("[messenger] a condition from %q was taken and dropped: not a module's name", asker)
+			return nil
+		}
+		h.takeCondition(asker, body)
+		return nil
+	}
 	h.warmRootFree(true) // fresh, before the work: an ask refused for no channel stays refused with its asker
 	h.work.Lock()
 	defer h.work.Unlock()

modules/messenger/cmd/messenger/condition.go

@@ -38,6 +38,8 @@ import (
 	"fmt"
 	"strings"
 	"time"
+
+	"git.novox.be/novox/mesh-sdk/go/asks"
 )
 
 // The events, by their local names under the controller's seat.
@@ -341,3 +343,33 @@ func DecodeOpen(raw json.RawMessage) ([]Condition, error) {
 	}
 	return nil, fmt.Errorf("the conditions answer lists no conditions")
 }
+
+// ConditionVerb is the verb a module says a condition with: `mesh.seat.operator-channel.accept.condition.<publisher>`
+// (novox/hq ADR 0437 §9).
+const ConditionVerb = "condition"
+
+// takeCondition takes one condition a module said on the seat's one subject. It is decided exactly as the
+// controller's conditions are, by Condition: there is no second path. The publisher is the subject's last
+// token, which the bus grants that module alone, so it is not compared with the condition's key. A body that is
+// not a condition in the SDK's layout is logged by publisher, taken and dropped.
+func (h *Holder) takeCondition(publisher string, body []byte) {
+	sc, err := asks.DecodeCondition(body)
+	if err != nil {
+		h.Logf("[messenger] a condition from %s was taken and dropped: %v", publisher, err)
+		return
+	}
+	c := Condition{Key: sc.Key, Scope: sc.Subject.Scope, ID: sc.Subject.ID, Machine: sc.Subject.Machine,
+		Severity: sc.Severity, Summary: sc.Summary, Headline: sc.Headline, Explanation: sc.Explanation,
+		Resolved: sc.Resolved, Needs: sc.Needs, Source: publisher}
+	if i := strings.LastIndex(sc.Key, "."); i >= 0 {
+		c.Kind = sc.Key[i+1:]
+	}
+	for _, a := range sc.Actions {
+		c.Actions = append(c.Actions, Action{Label: a.Label, Verb: a.Verb, Machine: a.Machine, Arguments: a.Arguments})
+	}
+	if sc.State == asks.StateCleared {
+		h.Condition(EventCleared, c)
+		return
+	}
+	h.Condition(EventRaised, c)
+}

modules/messenger/cmd/messenger/condition_intake_test.go

@@ -0,0 +1,134 @@
+package main
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"strings"
+	"testing"
+
+	"git.novox.be/novox/mesh-sdk/go/asks"
+)
+
+// sdkCondition is a raised warning in mesh-sdk's layout, as a module says it on the operator channel's one subject.
+func sdkCondition(needs string) asks.Condition {
+	verdict := asks.NothingToDo
+	if needs != "" {
+		verdict = asks.NeedsYou + needs
+	}
+	return asks.Condition{Key: "merge.d-7.stalled", Severity: asks.SeverityWarning,
+		Subject: asks.Scope{Scope: "merge", ID: "d-7"}, State: asks.StateRaised, Summary: "the merge waits on a check",
+		Headline: "A merge waits on a check", Needs: needs, Explanation: verdict + " It waits on a check."}
+}
+
+func conditionBody(t *testing.T, c asks.Condition) json.RawMessage {
+	t.Helper()
+	b, err := asks.EncodeCondition(c)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return b
+}
+
+func TestARaisedConditionSaidOnTheOneSubjectIsToldAsTheControllersIs(t *testing.T) { // 1217/AC1
+	h, tg, dt, c, _ := newHolder(t)
+	if err := h.TakeAsk("condition", "mesh-delivery-teller", conditionBody(t, sdkCondition("look at it."))); err != nil {
+		t.Fatalf("not acknowledged: %v", err) // 1217/AC1: an error would offer the work again
+	}
+	open := h.Open()
+	if len(open) != 1 || open[0].Key != "merge.d-7.stalled" || open[0].Subject != "merge d-7" || open[0].Origin != "condition" {
+		t.Fatalf("open: %+v", open)
+	}
+	settle(h, c)
+	if len(dt.sends) != 1 || len(tg.sends) != 0 {
+		t.Fatalf("a warning goes to the desk when a session answers: desktop %d telegram %d", len(dt.sends), len(tg.sends))
+	}
+	dt.fail = errors.New("the account is not logged in")
+	c.pass(DesktopWarningEvery)
+	k := sdkCondition("look at it.")
+	k.Key, k.Subject.ID = "merge.d-8.stalled", "d-8"
+	if err := h.TakeAsk("condition", "mesh-delivery-teller", conditionBody(t, k)); err != nil {
+		t.Fatal(err)
+	}
+	settle(h, c) // the desktop fails: handed to Telegram
+	h.Flush()
+	if len(tg.sends) != 1 {
+		t.Fatalf("no session: telegram %d", len(tg.sends))
+	}
+}
+
+func TestTheSameConditionTakenTwiceIsSaidOnce(t *testing.T) { // 1217/AC2
+	h, tg, dt, c, _ := newHolder(t)
+	body := conditionBody(t, sdkCondition("look at it."))
+	for range 2 {
+		if err := h.TakeAsk("condition", "mesh-delivery-teller", body); err != nil {
+			t.Fatal(err)
+		}
+	}
+	settle(h, c)
+	if len(dt.sends)+len(tg.sends) != 1 {
+		t.Fatalf("said %d times, want once", len(dt.sends)+len(tg.sends))
+	}
+	if open := h.Open(); len(open) != 1 {
+		t.Fatalf("open: %+v", open)
+	}
+}
+
+func TestAClearedConditionIsClearedAsTheControllersIs(t *testing.T) { // 1217/AC3
+	h, _, _, c, _ := newHolder(t)
+	if err := h.TakeAsk("condition", "mesh-delivery-teller", conditionBody(t, sdkCondition("look at it."))); err != nil {
+		t.Fatal(err)
+	}
+	settle(h, c)
+	cleared := asks.Condition{Key: "merge.d-7.stalled", Subject: asks.Scope{Scope: "merge", ID: "d-7"}, State: asks.StateCleared}
+	if err := h.TakeAsk("condition", "mesh-delivery-teller", conditionBody(t, cleared)); err != nil {
+		t.Fatal(err)
+	}
+	if open := h.Open(); len(open) != 0 {
+		t.Fatalf("still open: %+v", open)
+	}
+	// The same as the controller's clearing of the same key.
+	h2, _, _, c2, _ := newHolder(t)
+	h2.Condition(EventRaised, cond("merge.d-7.stalled", Warning, "the merge waits on a check"))
+	settle(h2, c2)
+	h2.Condition(EventCleared, Condition{Key: "merge.d-7.stalled"})
+	if len(h2.Open()) != 0 {
+		t.Fatal("the controller's clearing leaves it open")
+	}
+}
+
+func TestAWarningThatNeedsNothingIsKeptQuiet(t *testing.T) { // 1217/AC4
+	h, tg, dt, c, _ := newHolder(t)
+	if err := h.TakeAsk("condition", "mesh-delivery-teller", conditionBody(t, sdkCondition(""))); err != nil {
+		t.Fatal(err)
+	}
+	settle(h, c)
+	if len(dt.sends)+len(tg.sends) != 0 {
+		t.Fatalf("a quiet warning was told: desktop %d telegram %d", len(dt.sends), len(tg.sends))
+	}
+	if len(h.Open()) != 1 {
+		t.Fatalf("it is still recorded: %+v", h.Open())
+	}
+}
+
+func TestABodyThatIsNotAConditionIsDroppedAndTheLogNamesThePublisher(t *testing.T) { // 1217/AC5
+	for name, body := range map[string]string{
+		"bad JSON":        `{"v":1,`,
+		"unknown version": `{"v":9,"key":"merge.d-7.stalled","subject":{"scope":"merge","id":"d-7"},"state":"cleared"}`,
+		"no version":      `{"key":"merge.d-7.stalled","subject":{"scope":"merge","id":"d-7"},"state":"cleared"}`,
+	} {
+		h, tg, dt, c, _ := newHolder(t)
+		var logged []string
+		h.Logf = func(f string, a ...any) { logged = append(logged, strings.TrimSpace(fmt.Sprintf(f, a...))) }
+		if err := h.TakeAsk("condition", "mesh-delivery-teller", json.RawMessage(body)); err != nil {
+			t.Fatalf("%s: the work is taken and dropped, got %v", name, err)
+		}
+		settle(h, c)
+		if len(h.Open()) != 0 || len(dt.sends)+len(tg.sends) != 0 {
+			t.Fatalf("%s: something was recorded or told", name)
+		}
+		if !strings.Contains(strings.Join(logged, "\n"), "mesh-delivery-teller") {
+			t.Fatalf("%s: the log does not name the publisher: %q", name, logged)
+		}
+	}
+}

modules/messenger/cmd/messenger/manifest_test.go

@@ -60,12 +60,12 @@ func readManifest(t *testing.T) (manifest, string) {
 	return m, string(raw)
 }
 
-func TestItDeclaresTheSeatsOfAnAskAndHoldsTheOperatorChannel(t *testing.T) {
+func TestItDeclaresTheSeatsOfAnAskAndHoldsTheOperatorChannel(t *testing.T) { // 1217/AC6: condition beside ask and cancel
 	m, _ := readManifest(t)
 	verbs := []string{"open", "history", "notify", "tell", "asks"}
 	want := []seat{
-		{Name: asks.Seat, Scope: "mesh", Serves: verbs, Accepts: []string{"ask", "cancel"}, Emits: []string{"decided"},
-			ByCaller: []string{"ask", "cancel", "decided"}, Records: []string{"asks"}},
+		{Name: asks.Seat, Scope: "mesh", Serves: verbs, Accepts: []string{"ask", "cancel", "condition"}, Emits: []string{"decided"},
+			ByCaller: []string{"ask", "cancel", "condition", "decided"}, Records: []string{"asks"}},
 		{Name: asks.ChannelSeat, Scope: "mesh", Kinded: true, Accepts: []string{asks.Show, asks.Edit, asks.Send}},
 		{Name: asks.IntakeSeat, Scope: "mesh", Kinded: true,
 			Emits: []string{asks.Chosen, asks.Link, asks.FailedWhat, asks.StandingWhat}, Proofs: []string{asks.CodeProof}},

modules/messenger/go.mod

@@ -1,22 +1,22 @@
 module messenger
 
-go 1.25.0
+go 1.26.0
 
 require (
-	git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261013182924-5933eb757d44
+	git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261019091011-aa68b67389c9
 	github.com/nats-io/nats-server/v2 v2.11.17
-	github.com/nats-io/nats.go v1.51.0
+	github.com/nats-io/nats.go v1.54.0
 )
 
 require (
 	github.com/antithesishq/antithesis-sdk-go v0.7.0-default-no-op // indirect
 	github.com/google/go-tpm v0.9.8 // indirect
-	github.com/klauspost/compress v1.18.5 // indirect
+	github.com/klauspost/compress v1.20.0 // indirect
 	github.com/minio/highwayhash v1.0.4 // indirect
 	github.com/nats-io/jwt/v2 v2.8.1 // indirect
-	github.com/nats-io/nkeys v0.4.15 // indirect
+	github.com/nats-io/nkeys v0.4.16 // indirect
 	github.com/nats-io/nuid v1.0.1 // indirect
-	golang.org/x/crypto v0.50.0 // indirect
-	golang.org/x/sys v0.43.0 // indirect
+	golang.org/x/crypto v0.57.0 // indirect
+	golang.org/x/sys v0.48.0 // indirect
 	golang.org/x/time v0.15.0 // indirect
 )

modules/messenger/go.sum

@@ -1,27 +1,27 @@
-git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261013182924-5933eb757d44 h1:r5xIo5qWOXQdCSMxvqJy8kV4U+P/QWXFK6971Ha6wU8=
-git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261013182924-5933eb757d44/go.mod h1:GFuZUElBZ9A++mxgIKo97aXXo+kV0uJ/UkbhQPPIbrY=
+git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261019091011-aa68b67389c9 h1:qHpN/fpTDqijfMVoepxUT6mPkfcydb4LiPKsIokv6iM=
+git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261019091011-aa68b67389c9/go.mod h1:ouERNpZizzwZ0HLEtAypsY9FR20FyUgUYRni6J7kVCY=
 github.com/antithesishq/antithesis-sdk-go v0.7.0-default-no-op h1:Z/MZK75wC/NSrkgqeNIa7jexam9uWzhLmFTSCPI/kn0=
 github.com/antithesishq/antithesis-sdk-go v0.7.0-default-no-op/go.mod h1:FQyySiasQQM8735Ddel3MRojmy4dA1IqCeyJ5jmPMbI=
 github.com/google/go-tpm v0.9.8 h1:slArAR9Ft+1ybZu0lBwpSmpwhRXaa85hWtMinMyRAWo=
 github.com/google/go-tpm v0.9.8/go.mod h1:h9jEsEECg7gtLis0upRBQU+GhYVH6jMjrFxI8u6bVUY=
-github.com/klauspost/compress v1.18.5 h1:/h1gH5Ce+VWNLSWqPzOVn6XBO+vJbCNGvjoaGBFW2IE=
-github.com/klauspost/compress v1.18.5/go.mod h1:cwPg85FWrGar70rWktvGQj8/hthj3wpl0PGDogxkrSQ=
+github.com/klauspost/compress v1.20.0 h1:a3C1ke2ohxFymNlb2HWAHjDeKCI90scRskErZkR0ezA=
+github.com/klauspost/compress v1.20.0/go.mod h1:LUdAzn7YLVvxLpc7y3V1m40wESHTgc1422pwwBSKYuI=
 github.com/minio/highwayhash v1.0.4 h1:asJizugGgchQod2ja9NJlGOWq4s7KsAWr5XUc9Clgl4=
 github.com/minio/highwayhash v1.0.4/go.mod h1:GGYsuwP/fPD6Y9hMiXuapVvlIUEhFhMTh0rxU3ik1LQ=
 github.com/nats-io/jwt/v2 v2.8.1 h1:V0xpGuD/N8Mi+fQNDynXohVvp7ZztevW5io8CUWlPmU=
 github.com/nats-io/jwt/v2 v2.8.1/go.mod h1:nWnOEEiVMiKHQpnAy4eXlizVEtSfzacZ1Q43LIRavZg=
 github.com/nats-io/nats-server/v2 v2.11.17 h1:GKEghcFK6A+aFx11Yf1LjgLC3txAwvyhnYzhBIQZA8I=
 github.com/nats-io/nats-server/v2 v2.11.17/go.mod h1:B1sFVz4StNosQ903ak4N1G01Fl/9f8e06mXpFIE2K24=
-github.com/nats-io/nats.go v1.51.0 h1:ByW84XTz6W03GSSsygsZcA+xgKK8vPGaa/FCAAEHnAI=
-github.com/nats-io/nats.go v1.51.0/go.mod h1:26HypzazeOkyO3/mqd1zZd53STJN0EjCYF9Uy2ZOBno=
-github.com/nats-io/nkeys v0.4.15 h1:JACV5jRVO9V856KOapQ7x+EY8Jo3qw1vJt/9Jpwzkk4=
-github.com/nats-io/nkeys v0.4.15/go.mod h1:CpMchTXC9fxA5zrMo4KpySxNjiDVvr8ANOSZdiNfUrs=
+github.com/nats-io/nats.go v1.54.0 h1:vsXoOxjHp/GmPUN+EcI7uOf/uB+iAP+kEsAFNQN0yzA=
+github.com/nats-io/nats.go v1.54.0/go.mod h1:y+DZoD1oBOYfZTU681eTUiUjI0vbqYGixNVFHcjHJ0k=
+github.com/nats-io/nkeys v0.4.16 h1:rd5oAuLOb8mnAycB0xleuEBNS1pVVnN0fv/FF34Eypg=
+github.com/nats-io/nkeys v0.4.16/go.mod h1:llLgWoI0o4z/Q57q2R1kHfmocyhGV6VG/U18Glg1Afs=
 github.com/nats-io/nuid v1.0.1 h1:5iA8DT8V7q8WK2EScv2padNa/rTESc1KdnPw4TC2paw=
 github.com/nats-io/nuid v1.0.1/go.mod h1:19wcPz3Ph3q0Jbyiqsd0kePYG7A95tJPxeL+1OSON2c=
-golang.org/x/crypto v0.50.0 h1:zO47/JPrL6vsNkINmLoo/PH1gcxpls50DNogFvB5ZGI=
-golang.org/x/crypto v0.50.0/go.mod h1:3muZ7vA7PBCE6xgPX7nkzzjiUq87kRItoJQM1Yo8S+Q=
+golang.org/x/crypto v0.57.0 h1:3ZVCjf8Ggz7zneR/EHRVx68Ctf+2pmIMP2UFhh9cC6M=
+golang.org/x/crypto v0.57.0/go.mod h1:Fdz0i5U6CoizGwLda9DttjSk6qlZo25zYNtR+ycvuZA=
 golang.org/x/sys v0.21.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
-golang.org/x/sys v0.43.0 h1:Rlag2XtaFTxp19wS8MXlJwTvoh8ArU6ezoyFsMyCTNI=
-golang.org/x/sys v0.43.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
+golang.org/x/sys v0.48.0 h1:bbX/i/6MgT9BVLM9RT1thmxL04yeTAhbEz4SyadbXoo=
+golang.org/x/sys v0.48.0/go.mod h1:hNLxWAXmnKAxqDtdwIYC4bM9oQPEecfsnNMuSxOs3og=
 golang.org/x/time v0.15.0 h1:bbrp8t3bGUeFOx08pvsMYRTCVSMk89u4tKbNOZbp88U=
 golang.org/x/time v0.15.0/go.mod h1:Y4YMaQmXwGQZoFaVFk4YpCt4FLQMYKZe9oeV/f4MSno=

modules/messenger/module.json

@@ -16,7 +16,8 @@
       ],
       "accepts": [
         "ask",
-        "cancel"
+        "cancel",
+        "condition"
       ],
       "emits": [
         "decided"
@@ -24,6 +25,7 @@
       "by-caller": [
         "ask",
         "cancel",
+        "condition",
         "decided"
       ],
       "records": [