63 lines
1.6 KiB
Go
63 lines
1.6 KiB
Go
// Copyright 2013 Prometheus Team
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package manager
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import (
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"fmt"
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"hash/fnv"
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"sort"
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)
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const eventNameLabel = "name"
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type EventFingerprint uint64
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type EventLabels map[string]string
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type EventPayload map[string]string
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// Event models an action triggered by Prometheus.
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type Event struct {
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// Label value pairs for purpose of aggregation, matching, and disposition
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// dispatching. This must minimally include a "name" label.
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Labels EventLabels
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// Extra key/value information which is not used for aggregation.
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Payload EventPayload
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}
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func (e Event) Name() string {
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// BUG: ensure in a proper place that all events have a name?
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return e.Labels[eventNameLabel]
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}
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func (e Event) Fingerprint() EventFingerprint {
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keys := []string{}
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for k := range e.Labels {
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keys = append(keys, k)
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}
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sort.Strings(keys)
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summer := fnv.New64a()
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separator := string([]byte{0})
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for _, k := range keys {
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fmt.Fprintf(summer, "%s%s%s%s", k, separator, e.Labels[k], separator)
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}
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return EventFingerprint(summer.Sum64())
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}
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type Events []*Event
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