// Get statistics for specified metric
//
// If the arguments are invalid or the server returns an error, the error will
// be set and the other values undefined.
func (c *CloudWatch) GetMetricStatistics(req *GetMetricStatisticsRequest) (result *GetMetricStatisticsResponse, err error) {
statisticsSet := sets.SSet(req.Statistics...)
// Kick out argument errors
switch {
case req.EndTime.IsZero():
err = errors.New("No endTime specified")
case req.StartTime.IsZero():
err = errors.New("No startTime specified")
case req.MetricName == "":
err = errors.New("No metricName specified")
case req.Namespace == "":
err = errors.New("No Namespace specified")
case req.Period < 60 || req.Period%60 != 0:
err = errors.New("Period not 60 seconds or a multiple of 60 seconds")
case len(req.Statistics) < 1:
err = errors.New("No statistics supplied")
case validMetricStatistics.Union(statisticsSet).Len() != validMetricStatistics.Len():
err = errors.New("Invalid statistic values supplied")
case req.Unit != "" && !validUnits.Member(req.Unit):
err = errors.New("Unit is not a valid value")
}
if err != nil {
return
}
// Serialize all the params
params := aws.MakeParams("GetMetricStatistics")
params["EndTime"] = req.EndTime.UTC().Format(time.RFC3339)
params["StartTime"] = req.StartTime.UTC().Format(time.RFC3339)
params["MetricName"] = req.MetricName
params["Namespace"] = req.Namespace
params["Period"] = strconv.Itoa(req.Period)
if req.Unit != "" {
params["Unit"] = req.Unit
}
// Serialize the lists of data
for i, d := range req.Dimensions {
prefix := "Dimensions.member." + strconv.Itoa(i+1)
params[prefix+".Name"] = d.Name
params[prefix+".Value"] = d.Value
}
for i, d := range req.Statistics {
prefix := "Statistics.member." + strconv.Itoa(i+1)
params[prefix] = d
}
result = new(GetMetricStatisticsResponse)
err = c.query("GET", "/", params, result)
return
}
func (cwi *CloudwatchInput) Init(config interface{}) (err error) {
conf := config.(*CloudwatchInputConfig)
statisticsSet := sets.SSet(conf.Statistics...)
switch {
case conf.MetricName == "":
err = errors.New("No metric name supplied")
case conf.Period < 60 || conf.Period%60 != 0:
err = errors.New("Period must be divisible by 60")
case len(conf.Statistics) < 1:
err = errors.New("text·2")
case conf.Unit != "" && !validUnits.Member(conf.Unit):
err = errors.New("Unit is not a valid value")
case len(conf.Statistics) < 1:
err = errors.New("No statistics supplied")
case validMetricStatistics.Union(statisticsSet).Len() != validMetricStatistics.Len():
err = errors.New("Invalid statistic values supplied")
}
if err != nil {
return
}
dims := make([]cloudwatch.Dimension, 0)
for k, v := range conf.Dimensions {
dims = append(dims, cloudwatch.Dimension{k, v})
}
auth := aws.Auth{AccessKey: conf.AccessKey, SecretKey: conf.SecretKey}
cwi.req = &cloudwatch.GetMetricStatisticsRequest{
MetricName: conf.MetricName,
Period: conf.Period,
Unit: conf.Unit,
Statistics: conf.Statistics,
Dimensions: dims,
}
cwi.pollInterval, err = time.ParseDuration(conf.PollInterval)
if err != nil {
return
}
region, ok := aws.Regions[conf.Region]
if !ok {
err = errors.New("Region of that name not found.")
return
}
cwi.namespace = conf.Namespace
cwi.cw, err = cloudwatch.NewCloudWatch(auth, region.CloudWatchServicepoint,
conf.Namespace)
return
}
} var validUnits = sets.SSet( "Seconds", "Microseconds", "Milliseconds", "Bytes", "Kilobytes", "Megabytes", "Gigabytes", "Terabytes", "Bits", "Kilobits", "Megabits", "Gigabits", "Terabits", "Percent", "Count", "Bytes/Second", "Kilobytes/Second", "Megabytes/Second", "Gigabytes/Second", "Terabytes/Second", "Bits/Second", "Kilobits/Second", "Megabits/Second", "Gigabits/Second", "Terabits/Second", "Count/Second", ) var validMetricStatistics = sets.SSet(
var validUnits = sets.SSet( UnitSeconds, UnitMicroseconds, UnitMilliseconds, UnitBytes, UnitKilobytes, UnitMegabytes, UnitGigabytes, UnitTerabytes, UnitBits, UnitKilobits, UnitMegabits, UnitGigabits, UnitTerabits, UnitPercent, UnitCount, UnitBytesPerSecond, UnitKilobytesPerSecond, UnitMegabytesPerSecond, UnitGigabytesPerSecond, UnitTerabytesPerSecond, UnitBitsPerSecond, UnitKilobitsPerSecond, UnitMegabitsPerSecond, UnitGigabitsPerSecond, UnitTerabitsPerSecond, UnitCountPerSecond, UnitNone, )
} var validUnits = sets.SSet( "Seconds", "Microseconds", "Milliseconds", "Bytes", "Kilobytes", "Megabytes", "Gigabytes", "Terabytes", "Bits", "Kilobits", "Megabits", "Gigabits", "Terabits", "Percent", "Count", "Bytes/Second", "Kilobytes/Second", "Megabytes/Second", "Gigabytes/Second", "Terabytes/Second", "Bits/Second", "Kilobits/Second", "Megabits/Second", "Gigabits/Second", "Terabits/Second", "Count/Second", ) var validMetricStatistics = sets.SSet(
