/
time_series_fields.go
70 lines (65 loc) · 2.13 KB
/
time_series_fields.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
// Copyright 2019 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package snippets
// [START monitoring_read_timeseries_fields]
import (
"context"
"fmt"
"io"
"time"
monitoring "cloud.google.com/go/monitoring/apiv3"
"github.com/golang/protobuf/ptypes/timestamp"
"google.golang.org/api/iterator"
monitoringpb "google.golang.org/genproto/googleapis/monitoring/v3"
)
// readTimeSeriesFields reads the last 20 minutes of the given metric, aligns
// everything on 10 minute intervals, and combines values from different
// instances.
func readTimeSeriesFields(w io.Writer, projectID string) error {
ctx := context.Background()
client, err := monitoring.NewMetricClient(ctx)
if err != nil {
return fmt.Errorf("NewMetricClient: %v", err)
}
startTime := time.Now().UTC().Add(time.Minute * -20)
endTime := time.Now().UTC()
req := &monitoringpb.ListTimeSeriesRequest{
Name: "projects/" + projectID,
Filter: `metric.type="compute.googleapis.com/instance/cpu/utilization"`,
Interval: &monitoringpb.TimeInterval{
StartTime: ×tamp.Timestamp{
Seconds: startTime.Unix(),
},
EndTime: ×tamp.Timestamp{
Seconds: endTime.Unix(),
},
},
View: monitoringpb.ListTimeSeriesRequest_HEADERS,
}
fmt.Fprintln(w, "Found data points for the following instances:")
it := client.ListTimeSeries(ctx, req)
for {
resp, err := it.Next()
if err == iterator.Done {
break
}
if err != nil {
return fmt.Errorf("could not read time series value: %v", err)
}
fmt.Fprintf(w, "\t%v\n", resp.GetMetric().GetLabels()["instance_name"])
}
fmt.Fprintln(w, "Done")
return nil
}
// [END monitoring_read_timeseries_fields]