docs: review documentation updates for ada697198

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Documentation Update Review

Triggered by commit: ada697198
Generated: 2026-04-06 14:05 UTC
Compare: fec120f0e747aa46b33e27b0c18471e05982808e...ada697198

Affected Documents

Document	Files Changed	Status
Multi-Node Deployment Guide	2 files	✅ Reviewed
Installation Guide	2 files	✅ Reviewed

All Changed Files in This Commit

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CODE_CLEANUP_REPORT.md
DOCUMENTATION_REVIEW.md
IMPLEMENTATION_SUMMARY.md
OBSERVABILITY_GETTING_STARTED.md
PREFERENCES_PANE_FIXES.md
PROMETHEUS_ANALYSIS.md
PROMETHEUS_EVENTS_GUIDE.md
PROMETHEUS_IMPLEMENTATION.md
PROMETHEUS_PLUGIN.md
docs/observability.md
docs/prometheus_initialization.md
ops/grafana/dashboards/pychron-device-health.json
ops/grafana/dashboards/pychron-overview.json
ops/preferences/prometheus.ini
ops/prometheus/prometheus.yml
pychron/canvas/canvas2D/extraction_line_canvas2D.py
pychron/envisage/initialization/utilities.py
pychron/envisage/pychron_run.py
pychron/experiment/executor_watchdog_integration.py
pychron/experiment/instrumentation.py
pychron/experiment/telemetry/device_io.py
pychron/experiment/tests/test_device_io_metrics.py
pychron/experiment/tests/test_executor_metrics.py
pychron/extraction_line/extraction_line_manager.py
pychron/extraction_line/tests/network_state_test.py
pychron/observability/__init__.py
pychron/observability/config.py
pychron/observability/event_capture.py
pychron/observability/event_exporter.py
pychron/observability/exporter.py
pychron/observability/metrics.py
pychron/observability/registry.py
pychron/observability/tasks/__init__.py
pychron/observability/tasks/event.py
pychron/observability/tasks/model.py
pychron/observability/tasks/panes/__init__.py
pychron/observability/tasks/panes/event_pane.py
pychron/observability/tasks/panes/status_pane.py
pychron/observability/tasks/plugin.py
pychron/observability/tasks/preferences_pane.py
pychron/observability/tasks/task.py
pyproject.toml
test/observability/__init__.py
test/observability/test_event_capture.py
test/observability/test_event_exporter.py
test/observability/test_event_pane.py
test/observability/test_exporter.py
test/observability/test_integration_live_events.py
test/observability/test_metrics.py
test/observability/test_panes_integration.py
test/observability/test_plugin_integration.py
test/observability/test_prometheus_initialization.py
test/observability/test_status_pane.py
test/observability/test_task_model.py
test/observability/test_valve_events.py
uv.lock

---

Multi-Node Deployment Guide {#multi-node-deployment}

Doc file: docs/multi_node_deployment_guide.md
Matched prefixes: pychron/extraction_line/

Changed Files

• pychron/extraction_line/extraction_line_manager.py
• pychron/extraction_line/tests/network_state_test.py

AI Review

Code Change Summary

The code changes introduce Prometheus observability logging for valve operations in the extraction line manager and add comprehensive testing for canvas network state propagation with closed valves. The Prometheus integration adds a new optional dependency and monitoring capability for valve state changes, while the test improvements validate canvas connector color propagation behavior when valves are closed.

Documentation Updates Required

• Section/Topic: Prerequisites/Dependencies
  Issue: The new Prometheus observability integration introduces an optional dependency that isn't documented
  Suggested update: Add information about the optional pychron.observability module for Prometheus monitoring, including installation requirements and configuration for multi-node deployments that want valve operation metrics

• Section/Topic: Startup Tests/Validation
  Issue: The enhanced network state testing capabilities, particularly for closed valve scenarios and canvas color propagation, are not covered in the startup test procedures
  Suggested update: Include validation steps for testing closed valve connector behavior and canvas state propagation across nodes, especially for pyValve nodes that manage extraction line components

• Section/Topic: Monitoring/Observability
  Issue: The new Prometheus valve operation logging feature is not documented as an available monitoring option
  Suggested update: Add a section describing how valve operations can be monitored via Prometheus metrics in multi-node setups, including the valve_{action} counter metrics with valve name labels, and how this integrates with distributed valve management across pyValve nodes

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Installation Guide {#installation-guide}

Doc file: docs/installation_guide.md
Matched prefixes: pyproject.toml, app_utils/, uv.lock

Changed Files

• pyproject.toml
• uv.lock

AI Review

Code Change Summary

The code changes add prometheus-client as a new core dependency to Pychron, with a version constraint of >=0.21.0,<1. This dependency has been added to the main dependencies list in pyproject.toml and the lock file has been updated to reflect the inclusion of prometheus-client version 0.24.1. Since this is a new required dependency, the Installation Guide needs to be updated to reflect this change.

Documentation Updates Required

• Section/Topic: Dependencies section or requirements listing
  Issue: The Installation Guide likely contains a list of core dependencies or system requirements that would now be incomplete without mentioning prometheus-client
  Suggested update: Add prometheus-client (>=0.21.0,<1) to any comprehensive dependency lists or mention that prometheus-client is now included as a core dependency for metrics collection functionality

• Section/Topic: Installation troubleshooting or known issues section (if it exists)
  Issue: Missing potential troubleshooting information for the new prometheus-client dependency
  Suggested update: If there's a troubleshooting section, consider adding a note about prometheus-client installation issues if they're known to occur on specific platforms, or note that prometheus-client is automatically installed with the standard installation process

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