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main.go
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main.go
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package main
import (
"context"
"encoding/json"
"fmt"
"os"
"sort"
"sync"
"github.com/terakoya76/modd/datadog"
"github.com/terakoya76/modd/evaluator"
)
type monitorStatus struct {
Name string
Unmonitored []string
}
func main() {
ctx := datadog.GetDatadogContext()
ddClient := datadog.GetDatadogClient()
metadata, err := datadog.GetMetadata(ctx, ddClient)
if err != nil {
fmt.Fprintf(os.Stderr, "faield to get monitor metadata: %v\n", err)
os.Exit(1)
}
monitors, err := datadog.ListMonitors(ctx, ddClient, metadata)
if err != nil {
fmt.Fprintf(os.Stderr, "faield to list monitors: %v\n", err)
os.Exit(1)
}
ddMonitorTagsMapping, err := datadog.GetMonitorTagsMapping(monitors)
if err != nil {
fmt.Fprintf(os.Stderr, "failed to get monitor/tags mapping: %v\n", err)
os.Exit(1)
}
ddMonitorScopesMapping, err := datadog.GetMonitorScopesMapping(monitors)
if err != nil {
fmt.Fprintf(os.Stderr, "failed to get monitor/scopes mapping: %v\n", err)
os.Exit(1)
}
monitorStatuses, unsupported, err := checkUnmonitored(ctx, ddMonitorScopesMapping, ddMonitorTagsMapping)
if err != nil {
fmt.Fprintf(os.Stderr, "failed to check monitor status: %v\n", err)
os.Exit(1)
}
result := make(map[string]interface{})
result["Monitors"] = monitorStatuses
result["Unsupported"] = unsupported
j, _ := json.Marshal(result)
fmt.Fprintf(os.Stdout, "%s", j)
}
func checkUnmonitored(
ctx context.Context,
monitorScopesMapping datadog.MonitorScopesMapping,
monitorTagsMapping datadog.MonitorTagsMapping,
) ([]monitorStatus, []string, error) {
var wg sync.WaitGroup
var mu sync.Mutex
unsupported := make([]string, 0)
monitorStatuses := make([]monitorStatus, 0)
for metric, scopes := range monitorScopesMapping {
ddTags := monitorTagsMapping[metric]
it := datadog.MetricToIntegrationTarget(metric)
if it == datadog.UnknownIntegration {
unsupported = append(unsupported, metric)
continue
}
e, err := evaluator.BuildEvaluator(it)
if err != nil {
return nil, nil, fmt.Errorf("failed to get Evaluator object: %v", err)
}
wg.Add(1)
go func(metric string, scopes []datadog.Scope) {
defer wg.Done()
unmonitored, err := e.Evaluate(ctx, scopes, ddTags)
if err != nil {
fmt.Fprintf(os.Stderr, "failed to filter monitors: %v\n", err)
return
}
mu.Lock()
defer mu.Unlock()
ms := monitorStatus{
Name: metric,
Unmonitored: unmonitored,
}
monitorStatuses = append(monitorStatuses, ms)
}(metric, scopes)
}
wg.Wait()
sort.Slice(monitorStatuses, func(i, j int) bool {
return monitorStatuses[i].Name < monitorStatuses[j].Name
})
for i := 0; i < len(monitorStatuses); i++ {
sort.Strings(monitorStatuses[i].Unmonitored)
}
sort.Strings(unsupported)
return monitorStatuses, unsupported, nil
}