git-hulk commented on code in PR #1799:
URL: https://github.com/apache/kvrocks/pull/1799#discussion_r1355953862
##########
src/types/redis_stream.cc:
##########
@@ -313,6 +334,59 @@ rocksdb::Status Stream::DestroyGroup(const Slice
&stream_name, const std::string
return storage_->Write(storage_->DefaultWriteOptions(),
batch->GetWriteBatch());
}
+rocksdb::Status Stream::CreateConsumer(const Slice &stream_name, const
std::string &group_name,
+ const std::string &consumer_name, int
*created_number) {
+ if (std::isdigit(consumer_name[0])) {
+ return rocksdb::Status::InvalidArgument("consumer name cannot start with
number");
+ }
+ std::string ns_key = AppendNamespacePrefix(stream_name);
+ LockGuard guard(storage_->GetLockManager(), ns_key);
+ StreamMetadata metadata;
+ rocksdb::Status s = GetMetadata(ns_key, &metadata);
+ if (!s.ok() && !s.IsNotFound()) {
+ return s;
+ }
+ if (s.IsNotFound()) {
+ return
rocksdb::Status::InvalidArgument(errXGroupSubcommandRequiresKeyExist);
+ }
+
+ std::string entry_key = internalKeyFromGroupName(ns_key, metadata,
group_name);
+ std::string get_entry_value;
+ s = storage_->Get(rocksdb::ReadOptions(), stream_cf_handle_, entry_key,
&get_entry_value);
+ if (!s.ok() && !s.IsNotFound()) {
+ return s;
+ }
+ if (s.IsNotFound()) {
+ return rocksdb::Status::InvalidArgument("NOGROUP No such consumer group" +
group_name + "for key name" +
Review Comment:
```suggestion
return rocksdb::Status::InvalidArgument("NOGROUP No such consumer group
" + group_name + " for key name " +
```
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