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Index ¶
Constants ¶
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Variables ¶
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Functions ¶
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Types ¶
type CloudWatch ¶
type CloudWatch struct {
// contains filtered or unexported fields
}
CloudWatch receives metrics observations and forwards them to CloudWatch. Create a CloudWatch object, use it to create metrics, and pass those metrics as dependencies to the components that will use them.
To regularly report metrics to CloudWatch, use the WriteLoop helper method.
func New ¶
func New(namespace string, svc cloudwatchiface.CloudWatchAPI, logger log.Logger) *CloudWatch
New returns a CloudWatch object that may be used to create metrics. Namespace is applied to all created metrics and maps to the CloudWatch namespace. Callers must ensure that regular calls to Send are performed, either manually or with one of the helper methods.
func (*CloudWatch) NewCounter ¶
func (cw *CloudWatch) NewCounter(name string) metrics.Counter
NewCounter returns a counter. Observations are aggregated and emitted once per write invocation.
func (*CloudWatch) NewGauge ¶
func (cw *CloudWatch) NewGauge(name string) metrics.Gauge
NewGauge returns a gauge. Observations are aggregated and emitted once per write invocation.
func (*CloudWatch) NewHistogram ¶
func (cw *CloudWatch) NewHistogram(name string, buckets int) metrics.Histogram
NewHistogram returns a histogram. Observations are aggregated and emitted as per-quantile gauges, once per write invocation. 50 is a good default value for buckets.
func (*CloudWatch) Send ¶
func (cw *CloudWatch) Send() error
Send will fire an API request to CloudWatch with the latest stats for all metrics. It is preferred that the WriteLoop method is used.
func (*CloudWatch) WriteLoop ¶
func (cw *CloudWatch) WriteLoop(c <-chan time.Time)
WriteLoop is a helper method that invokes Send every time the passed channel fires. This method blocks until the channel is closed, so clients probably want to run it in its own goroutine. For typical usage, create a time.Ticker and pass its C channel to this method.
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