MeshRank slots previously took packets only. The broker tolerates status and
neighbors (and its maintainer intends to look at using the neighbors data), so
those now publish under meshrank/uplink/{token}/{device}/{type}, using the same
type suffixes as the MeshCore layout. Raw stays excluded: it is the
highest-volume topic and the broker does not consume it, so `set mqtt.raw on`
has no effect on a MeshRank slot.
All MeshRank gating funnels through the topic router, so relaxing that single
guard was sufficient - publishStatusToSlot, publishStatus, publishRaw,
publishNeighbors, and eligiblePacketSlots already skip slots that cannot form a
topic. A per-slot token is still required. Because eligiblePacketSlots resolves
topic support before serialising, raw JSON is never built for a MeshRank slot
rather than built and discarded.
observer-firmware sends raw to MeshRank; this supersedes that decision, so raw
must stay excluded when the branches merge. MeshRankTakesEveryTypeExceptRaw
fails if a merge re-enables it.
92 lines
3.3 KiB
C
92 lines
3.3 KiB
C
#pragma once
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#include <stddef.h>
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#include <stdio.h>
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#include <string.h>
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#include "MQTTObserverValidation.h"
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#include "MQTTTopicTemplate.h"
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// Pure MQTT publication-topic policy shared by MQTTBridge and the native tests.
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// Keep these values aligned with MQTTBridge::MQTTMessageType; the bridge passes
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// its enum value as an int so this helper stays independent of ESP/Arduino types.
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enum MQTTPublicationType {
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MQTT_PUBLICATION_STATUS = 0,
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MQTT_PUBLICATION_PACKETS = 1,
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MQTT_PUBLICATION_RAW = 2,
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MQTT_PUBLICATION_NEIGHBORS = 3,
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};
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enum MQTTTopicRouteStyle {
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MQTT_ROUTE_MESHCORE,
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MQTT_ROUTE_MESHRANK,
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MQTT_ROUTE_CUSTOM,
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};
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static inline bool mqttTopicSlotIndexValid(int index, size_t slot_count) {
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return index >= 0 && (size_t)index < slot_count;
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}
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static inline const char* mqttPublicationTypeName(int type) {
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switch (type) {
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case MQTT_PUBLICATION_STATUS: return "status";
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case MQTT_PUBLICATION_PACKETS: return "packets";
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case MQTT_PUBLICATION_RAW: return "raw";
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case MQTT_PUBLICATION_NEIGHBORS: return "neighbors";
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default: return NULL;
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}
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}
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static inline bool mqttWriteTopic(char* buf, size_t buf_size, const char* format,
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const char* first, const char* second,
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const char* third) {
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if (!buf || buf_size == 0 || !format || !first || !second || !third) return false;
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buf[0] = '\0';
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int written = snprintf(buf, buf_size, format, first, second, third);
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return written > 0 && (size_t)written < buf_size;
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}
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// Build the complete topic for one publication. MeshRank takes status, packets,
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// and neighbors under meshrank/uplink/{token}/{device}/, using the same type
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// suffixes as the MeshCore layout, and requires a per-slot token rather than an
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// IATA. MeshCore routes require a configured IATA and device id. Custom
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// templates may omit either placeholder, so their individual values are allowed
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// to be empty.
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static inline bool mqttBuildPublicationTopic(MQTTTopicRouteStyle style, int type,
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const char* custom_template,
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const char* iata, const char* device,
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const char* token,
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char* buf, size_t buf_size) {
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if (!buf || buf_size == 0) return false;
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buf[0] = '\0';
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const char* type_name = mqttPublicationTypeName(type);
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if (!type_name) return false;
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switch (style) {
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case MQTT_ROUTE_MESHCORE:
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if (!mqttIataValid(iata) || strcmp(iata, "XXX") == 0 || !device || device[0] == '\0') {
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return false;
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}
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return mqttWriteTopic(buf, buf_size, "meshcore/%s/%s/%s", iata, device, type_name);
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case MQTT_ROUTE_MESHRANK:
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// Raw is deliberately withheld: highest-volume topic, and the broker does
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// not consume it. observer-firmware still sends it — keep this on merge.
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if (type == MQTT_PUBLICATION_RAW || !token || token[0] == '\0' ||
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!device || device[0] == '\0') {
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return false;
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}
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return mqttWriteTopic(buf, buf_size, "meshrank/uplink/%s/%s/%s",
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token, device, type_name);
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case MQTT_ROUTE_CUSTOM:
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return mqttSubstituteTopic(custom_template, iata, device, token, type_name,
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buf, buf_size);
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default:
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return false;
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}
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}
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