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Validated with below template changes, |
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Pull request overview
This PR updates the MetricAgent plugin so compute_metric rules can operate when the required operands are split across multiple matrices (instead of assuming a single object-keyed matrix), and adjusts/adds unit tests to cover the multi-matrix scenario.
Changes:
- Changed
MetricAgent.actionsto accept the fulldataMap(map[string]*matrix.Matrix) rather than a single*matrix.Matrix. - Updated
computeMetricsto select operand matrices per rule/operand (enabling multi-matrix support). - Updated the single-matrix test to run through
Run(), and added a new multi-matrix test case.
Reviewed changes
Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.
| File | Description |
|---|---|
| cmd/poller/plugin/metricagent/parse_rules.go | Updates action function signature to accept the full matrix map. |
| cmd/poller/plugin/metricagent/metric_agent.go | Passes dataMap through actions and updates compute logic for multi-matrix operands. |
| cmd/poller/plugin/metricagent/metric_agent_test.go | Renames/updates existing test to call Run() and adds a multi-matrix test. |
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| metricVal = a.getMetric(m, r.metricNames[i]) | ||
| if metricVal != nil { | ||
| v, _ = metricVal.GetValueFloat64(instance) | ||
| if m[i] != nil && m[i].GetInstance(iKey) != nil { |
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SG metrics seems to have an index https://github.com/NetApp/harvest/blob/main/cmd/collectors/storagegrid/storagegrid.go#L219
Would getting by name work?
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Yes, validated locally and it's able to apply the given operator on the same instance of both metrics.
mat.NewInstance(metricName + "-" + strconv.Itoa(i)); Yes, it has index in instanceKey generation, but we use that instance key as-is for all m arrays.
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Validated with this plugin changes, Logs: 
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Pull request overview
Copilot reviewed 3 out of 3 changed files in this pull request and generated no new comments.
Comments suppressed due to low confidence (1)
cmd/poller/plugin/metricagent/metric_agent.go:155
- If an operand metric isn't found, this appends
err(typically nil from the precedingAtoifailure) and breaks out without settingskipMetric, so the derived metric can be written with a partial/incorrect result and the missing-metric details are lost. Append a concrete error and markskipMetricbefore breaking.
} else {
metricNotFound = append(metricNotFound, err)
break
}
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Pull request overview
Copilot reviewed 3 out of 3 changed files in this pull request and generated no new comments.
Comments suppressed due to low confidence (1)
cmd/poller/plugin/metricagent/metric_agent.go:155
- When an operand metric is missing, this appends
errtometricNotFound, buterrhere is the strconv.Atoi parse error for the metric name (or nil) rather than a "missing metric" error. Record a concrete error tied to the missing metric so the warning at the end is actionable.
} else {
metricNotFound = append(metricNotFound, err)
break
}
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Added supporting test cases as well.