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Use a new hash object when calculating rollups #13

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Feb 3, 2015
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Use a new hash object when calculating rollups #13

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10 changes: 4 additions & 6 deletions haystack.go
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Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,6 @@ import (
"encoding/json"
"fmt"
"github.com/technoweenie/grohl"
"hash"
"io"
"net/http"
"net/url"
Expand All @@ -16,7 +15,6 @@ import (
type HaystackReporter struct {
Endpoint string
Hostname string
hash hash.Hash
}

func NewHaystackReporter(config *Configuration) (*HaystackReporter, error) {
Expand All @@ -26,7 +24,7 @@ func NewHaystackReporter(config *Configuration) (*HaystackReporter, error) {
}

endpoint.User = url.UserPassword(config.HaystackUser, config.HaystackPassword)
return &HaystackReporter{endpoint.String(), config.Hostname, md5.New()}, nil
return &HaystackReporter{Endpoint: endpoint.String(), Hostname: config.Hostname}, nil
}

func (r *HaystackReporter) Report(err error, data grohl.Data) error {
Expand Down Expand Up @@ -55,7 +53,7 @@ func (r *HaystackReporter) Report(err error, data grohl.Data) error {
}

func (r *HaystackReporter) rollup(data grohl.Data, firstline string) string {
r.hash.Reset()
io.WriteString(r.hash, fmt.Sprintf("%s:%s:%s", data["ns"], data["fn"], firstline))
return fmt.Sprintf("%x", r.hash.Sum(nil))
hash := md5.New()
io.WriteString(hash, fmt.Sprintf("%s:%s:%s", data["ns"], data["fn"], firstline))
return fmt.Sprintf("%x", hash.Sum(nil))
}