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Allow configuring cache_ttl for cloudwatch metrics.

This commit is contained in:
John Engelman 2016-05-04 12:01:19 -05:00
parent a2f66682df
commit eac7f23609
1 changed files with 9 additions and 2 deletions
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11
plugins/inputs/cloudwatch/cloudwatch.go
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@ -22,6 +22,7 @@ type (
Delay internal.Duration `toml:"delay"` Delay internal.Duration `toml:"delay"`
Namespace string `toml:"namespace"` Namespace string `toml:"namespace"`
Metrics []*Metric `toml:"metrics"` Metrics []*Metric `toml:"metrics"`
CacheTTL string `toml:"cache_ttl"`
client cloudwatchClient client cloudwatchClient
metricCache *MetricCache metricCache *MetricCache
} }
@ -74,6 +75,10 @@ func (c *CloudWatch) SampleConfig() string {
## gaps or overlap in pulled data ## gaps or overlap in pulled data
interval = '1m' interval = '1m'
## Configure the TTL for the internal cache of metrics.
## Defaults to 1 hr if not specified
#cache_ttl = '10m'
## Metric Statistic Namespace (required) ## Metric Statistic Namespace (required)
namespace = 'AWS/ELB' namespace = 'AWS/ELB'
@ -152,7 +157,9 @@ func (c *CloudWatch) Gather(acc telegraf.Accumulator) error {
func init() { func init() {
inputs.Add("cloudwatch", func() telegraf.Input { inputs.Add("cloudwatch", func() telegraf.Input {
return &CloudWatch{} return &CloudWatch{
CacheTTL: "1hr",
}
}) })
} }
@ -197,7 +204,7 @@ func (c *CloudWatch) fetchNamespaceMetrics() (metrics []*cloudwatch.Metric, err
more = token != nil more = token != nil
} }
cacheTTL, _ := time.ParseDuration("1hr") cacheTTL, _ := time.ParseDuration(c.CacheTTL)
c.metricCache = &MetricCache{ c.metricCache = &MetricCache{
Metrics: metrics, Metrics: metrics,
Fetched: time.Now(), Fetched: time.Now(),