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feat(monitoring): add version and build timestamp display to Grafana
- Add /version endpoint to Flask backend that reads VERSION and BUILD_TS files - Add version banner panel to Self-monitoring dashboard using Infinity datasource - Display format: "PostgresAI v<version> (built: <build_ts>)"
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Lines changed: 132 additions & 31 deletions

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‎config/grafana/dashboards/Self_Monitoring_Dashboard.json‎

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@@ -34,6 +34,84 @@
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"title": "Overview",
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"type": "row"
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},
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{
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"datasource": {
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"type": "yesoreyeram-infinity-datasource",
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"uid": "aerffb0z8rjlsc"
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},
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"fieldConfig": {
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"defaults": {
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"color": {
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"mode": "thresholds"
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},
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"mappings": [],
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"thresholds": {
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"mode": "absolute",
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"steps": [
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{
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"color": "blue"
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}
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]
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}
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},
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"overrides": []
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},
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"gridPos": {
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},
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"id": 200,
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"options": {
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"colorMode": "background",
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"graphMode": "none",
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"justifyMode": "center",
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"orientation": "horizontal",
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"percentChangeColorMode": "standard",
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"reduceOptions": {
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"calcs": [
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"lastNotNull"
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],
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"fields": "/^display$/",
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"values": false
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},
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"showPercentChange": false,
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"textMode": "value",
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"wideLayout": true
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},
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"pluginVersion": "12.0.2",
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"targets": [
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{
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"columns": [],
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"datasource": {
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"type": "yesoreyeram-infinity-datasource",
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"uid": "aerffb0z8rjlsc"
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},
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"filters": [],
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"format": "table",
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"global_query_id": "",
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"parser": "backend",
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"refId": "A",
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"root_selector": "",
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"source": "url",
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"type": "json",
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"url": "http://monitoring-flask-backend:5000/version",
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"url_options": {
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"method": "GET"
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},
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"computed_columns": [
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{
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"selector": "concat('PostgresAI v', version, ' (built: ', build_ts, ')')",
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"text": "display"
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}
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]
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}
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],
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"title": "",
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"transparent": true,
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"type": "stat"
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},
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{
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"datasource": {
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"type": "prometheus",
@@ -65,7 +143,7 @@
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"id": 33,
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"options": {

‎monitoring_flask_backend/app.py‎

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@@ -37,6 +37,29 @@ def get_prometheus_client():
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logger.error(f"Failed to connect to Prometheus: {e}")
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raise
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def read_version_file(filepath, default='unknown'):
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"""Read version information from file"""
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try:
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with open(filepath, 'r') as f:
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return f.read().strip()
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except FileNotFoundError:
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return default
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# Read version info at startup
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APP_VERSION = read_version_file('/VERSION')
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APP_BUILD_TS = read_version_file('/BUILD_TS')
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@app.route('/version', methods=['GET'])
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def version():
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"""Return application version and build timestamp"""
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return jsonify({
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"version": APP_VERSION,
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"build_ts": APP_BUILD_TS
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})
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@app.route('/health', methods=['GET'])
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def health():
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"""Health check endpoint"""

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