add prometheus instrumentation

internal/tasks/inventorySnapshots.go

@@ -12,6 +12,7 @@ import (
 	"time"
 	"vctp/db"
 	"vctp/db/queries"
+	"vctp/internal/metrics"
 	"vctp/internal/report"
 	"vctp/internal/utils"
 	"vctp/internal/vcenter"
@@ -168,6 +169,7 @@ func (c *CronTask) RunVcenterSnapshotHourly(ctx context.Context, logger *slog.Lo
 		c.Logger.Warn("failed to register hourly snapshot", "error", err, "table", tableName)
 	}
 
+	metrics.RecordHourlySnapshot(startTime, rowCount, err)
 	if err := c.generateReport(ctx, tableName); err != nil {
 		c.Logger.Warn("failed to generate hourly report", "error", err, "table", tableName)
 	}
@@ -636,44 +638,6 @@ func snapshotFromInventory(inv queries.Inventory, snapshotTime time.Time) invent
 	}
 }
 
-func insertDailyInventoryRow(ctx context.Context, dbConn *sqlx.DB, tableName string, row inventorySnapshotRow) error {
-	query := fmt.Sprintf(`
-INSERT INTO %s (
-  "InventoryId", "Name", "Vcenter", "VmId", "EventKey", "CloudId", "CreationTime", "DeletionTime",
-  "ResourcePool", "Datacenter", "Cluster", "Folder", "ProvisionedDisk", "VcpuCount",
-  "RamGB", "IsTemplate", "PoweredOn", "SrmPlaceholder", "VmUuid", "SnapshotTime", "IsPresent"
-)
-VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?);
-`, tableName)
-
-	query = sqlx.Rebind(sqlx.BindType(dbConn.DriverName()), query)
-
-	_, err := dbConn.ExecContext(ctx, query,
-		row.InventoryId,
-		row.Name,
-		row.Vcenter,
-		row.VmId,
-		row.EventKey,
-		row.CloudId,
-		row.CreationTime,
-		row.DeletionTime,
-		row.ResourcePool,
-		row.Datacenter,
-		row.Cluster,
-		row.Folder,
-		row.ProvisionedDisk,
-		row.VcpuCount,
-		row.RamGB,
-		row.IsTemplate,
-		row.PoweredOn,
-		row.SrmPlaceholder,
-		row.VmUuid,
-		row.SnapshotTime,
-		row.IsPresent,
-	)
-	return err
-}
-
 func insertHourlyBatch(ctx context.Context, dbConn *sqlx.DB, tableName string, rows []inventorySnapshotRow) error {
 	if len(rows) == 0 {
 		return nil
@@ -727,9 +691,11 @@ INSERT INTO %s (
 }
 
 func (c *CronTask) captureHourlySnapshotForVcenter(ctx context.Context, startTime time.Time, tableName string, url string) error {
+	started := time.Now()
 	c.Logger.Debug("connecting to vcenter for hourly snapshot", "url", url)
 	vc := vcenter.New(c.Logger, c.VcCreds)
 	if err := vc.Login(url); err != nil {
+		metrics.RecordVcenterSnapshot(url, time.Since(started), 0, err)
 		return fmt.Errorf("unable to connect to vcenter: %w", err)
 	}
 	defer func() {
@@ -740,6 +706,7 @@ func (c *CronTask) captureHourlySnapshotForVcenter(ctx context.Context, startTim
 
 	vcVms, err := vc.GetAllVMsWithProps()
 	if err != nil {
+		metrics.RecordVcenterSnapshot(url, time.Since(started), 0, err)
 		return fmt.Errorf("unable to get VMs from vcenter: %w", err)
 	}
 	canDetectMissing := len(vcVms) > 0
@@ -856,6 +823,7 @@ func (c *CronTask) captureHourlySnapshotForVcenter(ctx context.Context, startTim
 	}
 
 	if err := insertHourlyBatch(ctx, dbConn, tableName, batch); err != nil {
+		metrics.RecordVcenterSnapshot(url, time.Since(started), totals.VmCount, err)
 		return err
 	}
 
@@ -866,6 +834,7 @@ func (c *CronTask) captureHourlySnapshotForVcenter(ctx context.Context, startTim
 		"ram_total_gb", totals.RamTotal,
 		"disk_total_gb", totals.DiskTotal,
 	)
+	metrics.RecordVcenterSnapshot(url, time.Since(started), totals.VmCount, nil)
 	return nil
 }