68 lines
1.9 KiB
Go
68 lines
1.9 KiB
Go
/*
|
|
Copyright 2021 The Dapr 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 kafka
|
|
|
|
import (
|
|
"encoding/base64"
|
|
"encoding/pem"
|
|
"fmt"
|
|
"strings"
|
|
|
|
"github.com/Shopify/sarama"
|
|
)
|
|
|
|
// asBase64String implements the `fmt.Stringer` interface in order to print
|
|
// `[]byte` as a base 64 encoded string.
|
|
// It is used above to log the message key. The call to `EncodeToString`
|
|
// only occurs for logs that are written based on the logging level.
|
|
type asBase64String []byte
|
|
|
|
func (s asBase64String) String() string {
|
|
return base64.StdEncoding.EncodeToString(s)
|
|
}
|
|
|
|
func parseInitialOffset(value string) (initialOffset int64, err error) {
|
|
initialOffset = sarama.OffsetNewest // Default
|
|
if strings.EqualFold(value, "oldest") {
|
|
initialOffset = sarama.OffsetOldest
|
|
} else if strings.EqualFold(value, "newest") {
|
|
initialOffset = sarama.OffsetNewest
|
|
} else if value != "" {
|
|
return 0, fmt.Errorf("kafka error: invalid initialOffset: %s", value)
|
|
}
|
|
|
|
return initialOffset, err
|
|
}
|
|
|
|
// isValidPEM validates the provided input has PEM formatted block.
|
|
func isValidPEM(val string) bool {
|
|
block, _ := pem.Decode([]byte(val))
|
|
|
|
return block != nil
|
|
}
|
|
|
|
// Map of topics and their handlers
|
|
type TopicHandlers map[string]EventHandler
|
|
|
|
// TopicList returns the list of topics
|
|
func (th TopicHandlers) TopicList() []string {
|
|
topics := make([]string, len(th))
|
|
i := 0
|
|
for topic := range th {
|
|
topics[i] = topic
|
|
i++
|
|
}
|
|
return topics
|
|
}
|