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Make maxForward configurable, save old name in meta in rename metrics and make the hostname tag key configurable

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This commit is contained in:
Thomas Roehl 2022-03-09 11:23:17 +01:00
parent e7f7e68095
commit 3cf2f69a07
1 changed files with 13 additions and 7 deletions
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20
internal/metricRouter/metricRouter.go
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@ -25,6 +25,7 @@ type metricRouterTagConfig struct {
// Metric router configuration
type metricRouterConfig struct {
HostnameTagName string `json:"hostname_tag"` // Key name used when adding the hostname to a metric (default 'hostname')
AddTags []metricRouterTagConfig `json:"add_tags"` // List of tags that are added when the condition is met
DelTags []metricRouterTagConfig `json:"delete_tags"` // List of tags that are removed when the condition is met
IntervalAgg []agg.MetricAggregatorIntervalConfig `json:"interval_aggregates"` // List of aggregation function processed at the end of an interval
@ -33,6 +34,7 @@ type metricRouterConfig struct {
RenameMetrics map[string]string `json:"rename_metrics"` // Map to rename metric name from key to value
IntervalStamp bool `json:"interval_timestamp"` // Update timestamp periodically by ticker each interval?
NumCacheIntervals int `json:"num_cache_intervals"` // Number of intervals of cached metrics for evaluation
MaxForward int `json:"max_forward"` // Number of maximal forwarded metrics at one select
dropMetrics map[string]bool // Internal map for O(1) lookup
}
@ -76,7 +78,8 @@ func (r *metricRouter) Init(ticker mct.MultiChanTicker, wg *sync.WaitGroup, rout
r.cache_input = make(chan lp.CCMetric)
r.wg = wg
r.ticker = ticker
r.maxForward = ROUTER_MAX_FORWARD
r.config.MaxForward = ROUTER_MAX_FORWARD
r.config.HostnameTagName = "hostname"
// Set hostname
hostname, err := os.Hostname()
@ -100,6 +103,7 @@ func (r *metricRouter) Init(ticker mct.MultiChanTicker, wg *sync.WaitGroup, rout
cclog.ComponentError("MetricRouter", err.Error())
return err
}
r.maxForward = r.config.MaxForward
if r.config.NumCacheIntervals > 0 {
r.cache, err = NewCache(r.cache_input, r.ticker, &r.cachewg, r.config.NumCacheIntervals)
if err != nil {
@ -244,8 +248,10 @@ func (r *metricRouter) Start() {
cclog.ComponentDebug("MetricRouter", "FORWARD", point)
r.DoAddTags(point)
r.DoDelTags(point)
if new, ok := r.config.RenameMetrics[point.Name()]; ok {
name := point.Name()
if new, ok := r.config.RenameMetrics[name]; ok {
point.SetName(new)
point.AddMeta("oldname", name)
}
r.DoAddTags(point)
r.DoDelTags(point)
@ -258,7 +264,7 @@ func (r *metricRouter) Start() {
// Foward message received from collector channel
coll_forward := func(p lp.CCMetric) {
// receive from metric collector
p.AddTag("hostname", r.hostname)
p.AddTag(r.config.HostnameTagName, r.hostname)
if r.config.IntervalStamp {
p.SetTime(r.timestamp)
}
@ -287,7 +293,7 @@ func (r *metricRouter) Start() {
cache_forward := func(p lp.CCMetric) {
// receive from metric collector
if !r.dropMetric(p) {
p.AddTag("hostname", r.hostname)
p.AddTag(r.config.HostnameTagName, r.hostname)
forward(p)
}
}
@ -309,19 +315,19 @@ func (r *metricRouter) Start() {
case p := <-r.coll_input:
coll_forward(p)
for i := 0; len(r.coll_input) > 0 && i < r.maxForward; i++ {
for i := 0; len(r.coll_input) > 0 && i < (r.maxForward-1); i++ {
coll_forward(<-r.coll_input)
}
case p := <-r.recv_input:
recv_forward(p)
for i := 0; len(r.recv_input) > 0 && i < r.maxForward; i++ {
for i := 0; len(r.recv_input) > 0 && i < (r.maxForward-1); i++ {
recv_forward(<-r.recv_input)
}
case p := <-r.cache_input:
cache_forward(p)
for i := 0; len(r.cache_input) > 0 && i < r.maxForward; i++ {
for i := 0; len(r.cache_input) > 0 && i < (r.maxForward-1); i++ {
cache_forward(<-r.cache_input)
}
}