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check for valid holder before using calculating stats metrics when serving http requests

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This commit is contained in:
Michael Baird 2017-05-30 16:21:01 -05:00
parent 81ce68817f
commit 8c4950bc75
1 changed files with 22 additions and 19 deletions
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41
handler.go
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@ -40,9 +40,10 @@ import (
"github.com/pilosa/pilosa/internal"
"github.com/pilosa/pilosa/pql"
"unicode"
_ "github.com/pilosa/pilosa/statik"
"github.com/rakyll/statik/fs"
"unicode"
)
// Handler represents an HTTP handler.
@ -141,26 +142,28 @@ func (h *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
h.Router.ServeHTTP(w, r)
dif := time.Since(t)
// Handle some stats tagging
statsTags := make([]string, 0, 3)
if h.Holder != nil {
// Handle some stats tagging
statsTags := make([]string, 0, 3)
if h.Cluster.LongQueryTime > 0 && dif > h.Cluster.LongQueryTime {
h.logger().Printf("%s %s %.03fs", r.Method, r.URL.String(), float64(dif))
statsTags = append(statsTags, "slow_query")
if h.Cluster.LongQueryTime > 0 && dif > h.Cluster.LongQueryTime {
h.logger().Printf("%s %s %.03fs", r.Method, r.URL.String(), float64(dif))
statsTags = append(statsTags, "slow_query")
}
pathParts := strings.Split(r.URL.Path, "/")
endpointName := strings.Join(pathParts, "_")
if externalPrefixFlag[pathParts[1]] {
statsTags = append(statsTags, "external")
}
// useragent tag identifies internal/external endpoints
statsTags = append(statsTags, "useragent:"+r.UserAgent())
stats := h.Holder.Stats.WithTags(statsTags...)
stats.Histogram("http."+endpointName, float64(dif), 0.1)
}
pathParts := strings.Split(r.URL.Path, "/")
endpointName := strings.Join(pathParts, "_")
if externalPrefixFlag[pathParts[1]] {
statsTags = append(statsTags, "external")
}
// useragent tag identifies internal/external endpoints
statsTags = append(statsTags, "useragent:"+r.UserAgent())
stats := h.Holder.Stats.WithTags(statsTags...)
stats.Histogram("http."+endpointName, float64(dif), 0.1)
}
func (h *Handler) handleWebUI(w http.ResponseWriter, r *http.Request) {