feat(telemetry): add request-driven metric export for Agent Engine - #6510
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On the Vertex AI Agent Runtime CPU is throttled the instant a request finishes, so a background periodic metric exporter is starved between requests and drops data. This adds a request-driven metric reader (and the span processor + middleware that drive it) that collects and exports metrics on the request path, where CPU is guaranteed, without adding latency to any request. The default GCP metric exporter is also switched to a raw OTLP push exporter over telemetry.googleapis.com. Co-authored-by: Max Ind <maxind@google.com> PiperOrigin-RevId: 955921308
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feat(telemetry): add request-driven metric export for Agent Engine
On the Vertex AI Agent Runtime CPU is throttled the instant a request
finishes, so a background periodic metric exporter is starved between
requests and drops data. This adds a request-driven metric
reader (and the span processor + middleware that drive it) that
collects and exports metrics on the request path, where CPU is
guaranteed, without adding latency to any request.
The default GCP metric exporter is also switched to a raw OTLP push exporter
over telemetry.googleapis.com.
Co-authored-by: Max Ind maxind@google.com