/
publish_data.go
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/
publish_data.go
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// Copyright 2020 Google LLC
//
// 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
//
// https://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
package common
import (
"fmt"
"strconv"
"strings"
)
// PublishMetadata holds the results of a published message.
type PublishMetadata struct {
Partition int
Offset int64
}
func (pm *PublishMetadata) String() string {
return fmt.Sprintf("%d:%d", pm.Partition, pm.Offset)
}
// ParsePublishMetadata converts a string obtained from PublishMetadata.String()
// back to PublishMetadata.
func ParsePublishMetadata(input string) (*PublishMetadata, error) {
parts := strings.Split(input, ":")
if len(parts) != 2 {
return nil, fmt.Errorf("pubsublite: invalid encoded PublishMetadata %q", input)
}
partition, pErr := strconv.ParseInt(parts[0], 10, 64)
offset, oErr := strconv.ParseInt(parts[1], 10, 64)
if pErr != nil || oErr != nil {
return nil, fmt.Errorf("pubsublite: invalid encoded PublishMetadata %q", input)
}
return &PublishMetadata{Partition: int(partition), Offset: offset}, nil
}