woodpecker/shared/utils/paginate.go

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// Copyright 2023 Woodpecker 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 utils
// Paginate iterates over a func call until it does not return new items and return it as list.
func Paginate[T any](get func(page int) ([]T, error)) ([]T, error) {
items := make([]T, 0, 10)
page := 1
lenFirstBatch := -1
for {
batch, err := get(page)
if err != nil {
return nil, err
}
items = append(items, batch...)
if page == 1 {
lenFirstBatch = len(batch)
} else if len(batch) < lenFirstBatch || len(batch) == 0 {
break
}
page++
}
return items, nil
}