feat: resourceType rename + queued time + ip dim + gauge fill

CHANGELOG.md

@@ -1,5 +1,40 @@
 # Changelog
 
+## Unreleased — resourceType rename + queued time + ip dim + gauge fill
+
+### Breaking
+
+- Renamed the `resource` dimension to `resourceType` across the
+  events, gauges, and events-daily tables. All Metric column
+  constants, schema definitions, indexes, projections
+  (`p_by_resource*` → `p_by_resourceType*`), materialized-view
+  dimension list, and the `Metric::getResource()` getter (now
+  `Metric::getResourceType()`) follow the new name. Callers must
+  rename the `resource` tag key on writes and any queries that
+  filter/group by the old name. A one-time ClickHouse column rename
+  plus data backfill is required for existing deployments; that
+  migration lives in the cloud repo, not in this library.
+
+### Added
+
+- `Accumulator::collect()` accepts an optional `\DateTime $time`
+  argument. When provided, the row is written at that moment; when
+  omitted the ClickHouse adapter still stamps `now()`. Events with
+  the same (tenant, metric, tags) fold into the earliest supplied
+  time; gauges follow last-write-wins on both value and time.
+- `Usage::addBatch()` payloads may carry a `time` field per row
+  (`DateTime|string`) — the ClickHouse adapter threads it through
+  `formatDateTime()`.
+- New event-only `ip` dimension in `Metric::EVENT_COLUMNS` and
+  `Metric::getEventSchema()`. Stored as
+  `LowCardinality(Nullable(String))` in ClickHouse, indexed with a
+  `bloom_filter`, size 45 chars (IPv6 max). Gauges are unchanged.
+  `Metric::getIp()` is a typed accessor. The base-table primary key
+  is intentionally not extended with `ip`.
+- Gauge time-series reads now carry the last observed value forward
+  across empty buckets inside the window (LOCF) instead of collapsing
+  to zero. Events keep zero-fill. Return shape is unchanged.
+
 ## 0.4.0 — Per-dimension ClickHouse projections and auto-routing
 
 This release accelerates grouped reads against the events and gauges

README.md

@@ -119,7 +119,7 @@ $accumulator->collect('project_123', 'bandwidth', 5000, Usage::TYPE_EVENT, [
     'method' => 'POST',
     'status' => '201',
     'service' => 'storage',
-    'resource' => 'bucket',
+    'resourceType' => 'bucket',
     'resourceId' => 'abc123',
     'resourceInternalId' => '42',
     'teamId' => 'team_x',

src/Usage/Accumulator.php

@@ -16,12 +16,7 @@ class Accumulator
     private Usage $usage;
 
     /**
-     * In-memory buffer for metrics.
-     * Keyed by "{tenant}:{metric}:{type}:{tagsHash}" — events are summed, gauges
-     * use last-write-wins. Tenant is part of the key so metrics for different
-     * tenants never collapse into one entry.
-     *
-     * @var array<string, array{tenant: string, metric: string, value: int, type: string, tags: array<string, mixed>}>
+     * @var array<string, array{tenant: string, metric: string, value: int, type: string, tags: array<string, mixed>, time?: \DateTime}>
      */
     private array $buffer = [];
 
@@ -40,18 +35,12 @@ public function __construct(Usage $usage)
     /**
      * Collect a metric into the in-memory buffer for deferred flushing.
      *
-     * For event type: multiple collect() calls for the same metric are summed.
-     * For gauge type: last-write-wins semantics.
-     * No period fan-out — raw timestamps are used.
+     * Events fold additively; earliest non-null time wins on merge.
+     * Gauges use last-write-wins.
      *
-     * @param string $tenant Tenant scope (shared-tables mode)
-     * @param string $metric Metric name
-     * @param int $value Value
-     * @param string $type Metric type: 'event' or 'gauge'
-     * @param array<string,mixed> $tags Optional tags
-     * @return self
+     * @param array<string,mixed> $tags
      */
-    public function collect(string $tenant, string $metric, int $value, string $type, array $tags = []): self
+    public function collect(string $tenant, string $metric, int $value, string $type, array $tags = [], ?\DateTime $time = null): self
     {
         // Compare against '' rather than empty(): the string "0" is a valid
         // tenant/metric id but empty("0") is true in PHP.
@@ -77,17 +66,23 @@ public function collect(string $tenant, string $metric, int $value, string $type
         $key = md5(json_encode([$tenant, $metric, $type, $canonicalTags], JSON_THROW_ON_ERROR));
 
         if ($type === Usage::TYPE_EVENT && isset($this->buffer[$key])) {
-            // Additive: sum values for the same tenant + metric + tags combination
+            // earliest time wins on merge
             $this->buffer[$key]['value'] += $value;
+            if ($time !== null && (!isset($this->buffer[$key]['time']) || $time < $this->buffer[$key]['time'])) {
+                $this->buffer[$key]['time'] = $time;
+            }
         } else {
-            // New event entry, or gauge (last-write-wins)
-            $this->buffer[$key] = [
+            $entry = [
                 'tenant' => $tenant,
                 'metric' => $metric,
                 'value' => $value,
                 'type' => $type,
                 'tags' => $tags,
             ];
+            if ($time !== null) {
+                $entry['time'] = $time;
+            }
+            $this->buffer[$key] = $entry;
         }
 
         return $this;

src/Usage/Adapter.php

@@ -141,7 +141,7 @@ abstract public function sum(string $tenant, array $queries = [], string $attrib
      * the daily events table — gauges are never pre-aggregated.
      *
      * @param string $tenant Tenant scope (shared-tables mode)
-     * @param array<\Utopia\Query\Query> $queries  Filters (metric, time range, resource, etc.)
+     * @param array<\Utopia\Query\Query> $queries  Filters (metric, time range, resourceType, etc.)
      * @return array<Metric>
      */
     abstract public function findDaily(string $tenant, array $queries = []): array;