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cmd/geth: allow branching metric patterns

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This commit is contained in:
Péter Szilágyi 2015-06-24 17:12:38 +03:00
parent bf99d5b33c
commit 302187ae39
1 changed files with 24 additions and 17 deletions
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29
cmd/geth/monitorcmd.go
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@ -149,30 +149,37 @@ func resolveMetrics(metrics map[string]interface{}, patterns []string) []string
// resolveMetrics takes a single of input metric pattern, and resolves it to one // resolveMetrics takes a single of input metric pattern, and resolves it to one
// or more canonical metric names. // or more canonical metric names.
func resolveMetric(metrics map[string]interface{}, pattern string, path string) []string { func resolveMetric(metrics map[string]interface{}, pattern string, path string) []string {
var ok bool results := []string{}
// Build up the canonical metric path // If a nested metric was requested, recurse optionally branching (via comma)
parts := strings.Split(pattern, "/") parts := strings.SplitN(pattern, "/", 2)
for len(parts) > 1 { if len(parts) > 1 {
if metrics, ok = metrics[parts[0]].(map[string]interface{}); !ok { for _, variation := range strings.Split(parts[0], ",") {
utils.Fatalf("Failed to retrieve system metrics: %s", path+parts[0]) if submetrics, ok := metrics[variation].(map[string]interface{}); !ok {
utils.Fatalf("Failed to retrieve system metrics: %s", path+variation)
return nil
} else {
results = append(results, resolveMetric(submetrics, parts[1], path+variation+"/")...)
} }
path += parts[0] + "/" }
parts = parts[1:] return results
} }
// Depending what the last link is, return or expand // Depending what the last link is, return or expand
switch metric := metrics[parts[0]].(type) { for _, variation := range strings.Split(pattern, ",") {
switch metric := metrics[variation].(type) {
case float64: case float64:
// Final metric value found, return as singleton // Final metric value found, return as singleton
return []string{path + parts[0]} results = append(results, path+variation)
case map[string]interface{}: case map[string]interface{}:
return expandMetrics(metric, path+parts[0]+"/") results = append(results, expandMetrics(metric, path+variation+"/")...)
default: default:
utils.Fatalf("Metric pattern resolved to unexpected type: %v", reflect.TypeOf(metric)) utils.Fatalf("Metric pattern resolved to unexpected type: %v", reflect.TypeOf(metric))
return nil return nil
} }
}
return results
} }
// expandMetrics expands the entire tree of metrics into a flat list of paths. // expandMetrics expands the entire tree of metrics into a flat list of paths.