Scalability overhaul of [inputs.vsphere]

plugins/inputs/vsphere/README.md

@@ -122,17 +122,17 @@ vm_metric_exclude = [ "*" ]
   ## Clusters 
   # cluster_metric_include = [] ## if omitted or empty, all metrics are collected
   # cluster_metric_exclude = [] ## Nothing excluded by default
-  # cluster_instances = true ## true by default
+  # cluster_instances = false ## false by default 
 
   ## Datastores 
   # datastore_metric_include = [] ## if omitted or empty, all metrics are collected
   # datastore_metric_exclude = [] ## Nothing excluded by default
-  # datastore_instances = false ## false by default for Datastores only
+  # datastore_instances = false ## false by default 
 
   ## Datacenters
   datacenter_metric_include = [] ## if omitted or empty, all metrics are collected
   datacenter_metric_exclude = [ "*" ] ## Datacenters are not collected by default.
-  # datacenter_instances = false ## false by default for Datastores only
+  # datacenter_instances = false ## false by default 
 
   ## Plugin Settings  
   ## separator character to use for measurement and field names (default: "_")

plugins/inputs/vsphere/client.go

@@ -10,6 +10,8 @@ import (
 	"sync"
 	"time"
 
+	"github.com/vmware/govmomi/vim25/types"
+
 	"github.com/vmware/govmomi"
 	"github.com/vmware/govmomi/object"
 	"github.com/vmware/govmomi/performance"
@@ -76,6 +78,7 @@ func (cf *ClientFactory) GetClient(ctx context.Context) (*Client, error) {
 		ctx2, cancel2 := context.WithTimeout(ctx, cf.parent.Timeout.Duration)
 		defer cancel2()
 		if cf.client.Client.SessionManager.Login(ctx2, url.UserPassword(cf.parent.Username, cf.parent.Password)) != nil {
+			log.Printf("W! [input.vsphere]: Client reauthentication failed.")
 			return nil, err
 		}
 	}
@@ -205,6 +208,8 @@ func (c *Client) close() {
 
 // GetServerTime returns the time at the vCenter server
 func (c *Client) GetServerTime(ctx context.Context) (time.Time, error) {
+	ctx, cancel := context.WithTimeout(ctx, c.Timeout)
+	defer cancel()
 	t, err := methods.GetCurrentTime(ctx, c.Client)
 	if err != nil {
 		return time.Time{}, err
@@ -235,7 +240,7 @@ func (c *Client) GetMaxQueryMetrics(ctx context.Context) (int, error) {
 			// Fall through version-based inference if value isn't usable
 		}
 	} else {
-		log.Println("I! [input.vsphere] Option query for maxQueryMetrics failed. Using default")
+		log.Println("D! [input.vsphere] Option query for maxQueryMetrics failed. Using default")
 	}
 
 	// No usable maxQueryMetrics setting. Infer based on version
@@ -255,3 +260,38 @@ func (c *Client) GetMaxQueryMetrics(ctx context.Context) (int, error) {
 	}
 	return 256, nil
 }
+
+// QueryMetrics wraps performance.Query to give it proper timeouts
+func (c *Client) QueryMetrics(ctx context.Context, pqs []types.PerfQuerySpec) ([]performance.EntityMetric, error) {
+	ctx1, cancel1 := context.WithTimeout(ctx, c.Timeout)
+	defer cancel1()
+	metrics, err := c.Perf.Query(ctx1, pqs)
+	if err != nil {
+		return nil, err
+	}
+
+	ctx2, cancel2 := context.WithTimeout(ctx, c.Timeout)
+	defer cancel2()
+	return c.Perf.ToMetricSeries(ctx2, metrics)
+}
+
+// CounterInfoByName wraps performance.CounterInfoByName to give it proper timeouts
+func (c *Client) CounterInfoByName(ctx context.Context) (map[string]*types.PerfCounterInfo, error) {
+	ctx1, cancel1 := context.WithTimeout(ctx, c.Timeout)
+	defer cancel1()
+	return c.Perf.CounterInfoByName(ctx1)
+}
+
+// CounterInfoByKey wraps performance.CounterInfoByKey to give it proper timeouts
+func (c *Client) CounterInfoByKey(ctx context.Context) (map[int32]*types.PerfCounterInfo, error) {
+	ctx1, cancel1 := context.WithTimeout(ctx, c.Timeout)
+	defer cancel1()
+	return c.Perf.CounterInfoByKey(ctx1)
+}
+
+// ListResources wraps property.Collector.Retrieve to give it proper timeouts
+func (c *Client) ListResources(ctx context.Context, root *view.ContainerView, kind []string, ps []string, dst interface{}) error {
+	ctx1, cancel1 := context.WithTimeout(ctx, c.Timeout)
+	defer cancel1()
+	return root.Retrieve(ctx1, kind, ps, dst)
+}