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// Copyright 2018, the Blazer authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package window_test
import (
"fmt"
"time"
"github.com/Backblaze/blazer/x/window"
)
type Accumulator struct {
w *window.Window
}
func (a Accumulator) Add(s string) {
a.w.Insert([]string{s})
}
func (a Accumulator) All() []string {
v := a.w.Reduce()
return v.([]string)
}
func NewAccum(size time.Duration) Accumulator {
r := func(i, j interface{}) interface{} {
a, ok := i.([]string)
if !ok {
a = nil
}
b, ok := j.([]string)
if !ok {
b = nil
}
for _, s := range b {
a = append(a, s)
}
return a
}
return Accumulator{w: window.New(size, time.Second, r)}
}
func Example_accumulator() {
a := NewAccum(time.Minute)
a.Add("this")
a.Add("is")
a.Add("that")
fmt.Printf("total: %v\n", a.All())
// Output:
// total: [this is that]
}
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