[ADDED] JetStream: Direct Get Message #562
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This starts with a new boolean in a stream configuration:
```
// Allow higher performance, direct access to get individual messages. E.g. KeyValue
bool AllowDirect;
```
When a stream is created with that boolean, then it is possible
to use this API to get messages:
```
natsStatus
js_DirectGetMsg(natsMsg **msg, jsCtx *js, const char *stream, jsOptions *opts, jsDirectGetMsgOptions *dgOpts);
```
The possible options to get a message are:
```
typedef struct jsDirectGetMsgOptions
{
uint64_t Sequence; ///< Get the message at this sequence
const char *NextBySubject; ///< Get the next message (based on sequence) for that subject
const char *LastBySubject; ///< Get the last message on that subject
} jsDirectGetMsgOptions;
```
Signed-off-by: Ivan Kozlovic <ivan@synadia.com>
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This starts with a new boolean in a stream configuration:
When a stream is created with that boolean, then it is possible
to use this API to get messages:
The possible options to get a message are:
Signed-off-by: Ivan Kozlovic ivan@synadia.com