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topic_channel_args.go
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/
topic_channel_args.go
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package http_api
import (
"errors"
"github.com/absolute8511/nsq/internal/protocol"
"strconv"
)
type getter interface {
Get(key string) string
}
func GetTopicArg(rp getter) (string, error) {
topicName := rp.Get("topic")
if topicName == "" {
return "", errors.New("MISSING_ARG_TOPIC")
}
if !protocol.IsValidTopicName(topicName) {
return "", errors.New("INVALID_ARG_TOPIC")
}
return topicName, nil
}
func GetTopicChannelArgs(rp getter) (string, string, error) {
topicName, err := GetTopicArg(rp)
if err != nil {
return "", "", err
}
channelName := rp.Get("channel")
if channelName == "" {
return "", "", errors.New("MISSING_ARG_CHANNEL")
}
if !protocol.IsValidChannelName(channelName) {
return "", "", errors.New("INVALID_ARG_CHANNEL")
}
return topicName, channelName, nil
}
// partition can be missing, default as 0.
func GetTopicPartitionArgs(rp getter) (string, int, error) {
topicName, err := GetTopicArg(rp)
if err != nil {
return "", -1, err
}
topicPartStr := rp.Get("partition")
topicPart := -1
if topicPartStr == "" {
topicPart = -1
} else {
var err error
topicPart, err = strconv.Atoi(topicPartStr)
if err != nil {
return "", -1, err
}
}
return topicName, topicPart, nil
}
func GetTopicPartitionChannelArgs(rp getter) (string, int, string, error) {
topicName, topicPart, err := GetTopicPartitionArgs(rp)
if err != nil {
return "", -1, "", err
}
channelName := rp.Get("channel")
if channelName == "" {
return "", -1, "", errors.New("MISSING_ARG_CHANNEL")
}
if !protocol.IsValidChannelName(channelName) {
return "", -1, "", errors.New("INVALID_ARG_CHANNEL")
}
return topicName, topicPart, channelName, nil
}